JP7580685B2 - Carbon Recycle Complex Management System - Google Patents

Description

The present invention relates to a carbon recycling complex operation system.

In a petrochemical complex, where a single collection of machinery and equipment is organically linked to one another, fractions obtained by distilling and refining crude oil, as well as imported fractions, such as naphtha fractions, are cracked to become the raw materials for petrochemical products such as ethylene and propylene. Also, in the petrochemical complex, ethylene and chlorine obtained by electrolyzing imported rock salt using electricity generated by boilers mainly fueled by coal are used to produce vinyl chloride.
In conventional petrochemical complexes, the raw materials for the manufactured petrochemical products are transported to other companies via pipelines in order to reduce logistics costs.
For example, Patent Document 1 describes a utility sharing management system in a petrochemical complex in which utilities other than the transportation of raw materials via pipelines and the transportation of produced semi-finished products, specifically nitrogen and oxygen, are shared and centrally managed to reduce inventory and make effective use of facilities, thereby reducing costs.

JP 2002-062929 A

In recent years, technology to recycle carbon dioxide generated at petrochemical complexes (carbon recycling technology) has been under investigation.
In conventional petrochemical complexes, the transportation of raw materials for petrochemical products (such as ethylene) and hydrogen via pipelines, as well as the transportation of produced semi-finished products, have been streamlined. However, the utilities necessary for carbon recycling are not shared, and each business entity independently procures the necessary utilities and carbon recycles the carbon dioxide generated within the entity.

Furthermore, not only will each company have to expend manpower to operate the same equipment and process related data, but each company will also need to maintain a certain amount of inventory. This means that each company will need to ensure they have sufficient capacity to capture and use this carbon dioxide, and so they will also need storage tanks. In particular, for gaseous carbon dioxide and hydrogen, each company will need to invest in automated systems to flexibly respond to real-time fluctuations in supply and demand.

Even if each company has its own facilities for carbon dioxide capture, hydrogen supply, low-temperature waste heat generation, and manufacturing of carbon recycled products such as methanol, these facilities will only be operated to manufacture the products for their own use, which will require the new installation of many small-scale supply facilities and facilities that are in short supply (for example, utility facilities, storage tanks, import/export facilities, etc.). Furthermore, this will only result in a reduction in the cost of carbon recycling for each company.

Furthermore, if the carbon credit system is established, each business entity will have to carry out complicated cost calculations. If there is an exchange of carbon dioxide and/or hydrogen with neighboring business entities, calculations for billing purposes and other tasks will become even more complicated.

The object of the present invention is to provide a carbon recycling complex operation system that can reduce the costs associated with carbon recycling.

According to one aspect of the present invention, there is provided a carbon recycle complex operation system for recycling carbon dioxide generated in a complex composed of a plurality of enterprises, the plurality of enterprises constituting the complex including at least one combination of a carbon dioxide supplying enterprise that supplies carbon dioxide and a carbon dioxide receiving enterprise that receives carbon dioxide, and a hydrogen supplying enterprise that supplies hydrogen and a hydrogen receiving enterprise that receives hydrogen, the carbon recycle complex operation system including an information network connected between the plurality of enterprises, a plurality of terminals and servers connected via the information network, a common carbon dioxide pipe connecting the carbon dioxide supplying enterprise and the carbon dioxide receiving enterprise, a common hydrogen pipe connecting the hydrogen supplying enterprise and the hydrogen receiving enterprise, a carbon dioxide supplying device installed in the carbon dioxide supplying enterprise and supplying carbon dioxide to the common carbon dioxide pipe, and a carbon dioxide receiving apparatus installed in the carbon dioxide receiving enterprise and receiving carbon dioxide from the common carbon dioxide pipe. a carbon dioxide receiving device that receives hydrogen from the hydrogen common pipe; a hydrogen supply device that is installed at the hydrogen receiving device and receives hydrogen from the hydrogen common pipe; and a carbon recycling device that is installed at at least one of the carbon dioxide receiving device and the hydrogen receiving device, and at a device that implements carbon recycling, for recycling carbon dioxide. The carbon dioxide supply device has a carbon dioxide recovery device that recovers carbon dioxide produced by the carbon dioxide supply device, and a carbon dioxide supply control means that is connected to a first supply port of the carbon dioxide common pipe and controls the supply of carbon dioxide. The carbon dioxide receiving device has a carbon dioxide recovery device that recovers carbon dioxide produced by the hydrogen supply device, and a carbon dioxide supply control means that is connected to a first supply port of the carbon dioxide common pipe and controls the acceptance of carbon dioxide. The hydrogen supply device has a hydrogen recovery device that recovers hydrogen produced by the hydrogen supply device, and a hydrogen supply control means that is connected to a second supply port of the hydrogen common pipe and controls the supply of hydrogen. the carbon recycling apparatus is connected to at least one of the carbon dioxide receiving apparatus and the hydrogen receiving apparatus, and is an apparatus for carrying out carbon recycling using at least one of the received carbon dioxide and hydrogen as a raw material; the terminal is installed in the plurality of enterprises constituting the industrial complex, and is connected to at least one of the carbon dioxide supply control means, the carbon dioxide receiving control means, the hydrogen supply control means, and the hydrogen receiving control means; the terminal has an input means for inputting planned use information of at least one of a planned amount of carbon dioxide to be used in carbon recycling and a planned amount of hydrogen to be used; and a terminal transmission means for transmitting to the server the planned use information, supply information received from at least one of the carbon dioxide supply control means and the hydrogen supply control means, and acceptance information transmitted from the carbon dioxide acceptance control means and the hydrogen acceptance control means; the server receives the planned use information transmitted by the terminal transmission means, A carbon recycle complex operation system is provided that includes a storage means for storing the supply information and the receiving information, a writing means for storing the planned use information, the supply information, and the receiving information in the storage means, respectively, a notification means for notifying the multiple business entities that constitute the complex of the planned use information, the supply information, and the receiving information stored in the storage means, a calculation means for generating carbon dioxide supply control information for controlling the supply of carbon dioxide by the carbon dioxide supply control means and hydrogen supply control information for controlling the supply of hydrogen by the hydrogen supply control means based on the receiving information, and a server transmission means for transmitting the carbon dioxide supply control information to the carbon dioxide supply control means and the hydrogen supply control information to the hydrogen supply control means, wherein the carbon dioxide supply control means controls the carbon dioxide supplied to the carbon dioxide common pipe based on the carbon dioxide supply control information, and the hydrogen supply control means controls the hydrogen supplied to the hydrogen common pipe based on the hydrogen supply control information.

In a carbon recycling complex operation system according to one aspect of the present invention, the complex includes the carbon dioxide supplying entity and the carbon dioxide receiving entity, the carbon dioxide supply control means has a carbon dioxide compressor that compresses carbon dioxide and sends it into the carbon dioxide common pipe, a first supply valve that controls the supply of carbon dioxide into the carbon dioxide common pipe, a first supply pressure gauge that detects the pressure of carbon dioxide supplied to the carbon dioxide common pipe, and a first supply flow meter that detects the flow rate of carbon dioxide supplied to the carbon dioxide common pipe, and it is preferable that the carbon dioxide receiving control means has a first receiving valve that controls the reception of carbon dioxide from the carbon dioxide common pipe, a first receiving pressure gauge that detects the pressure of carbon dioxide received from the carbon dioxide common pipe, and a first receiving flow meter that detects the flow rate of carbon dioxide received from the carbon dioxide common pipe.

In the carbon recycle complex operation system according to one aspect of the present invention, it is preferable that the carbon dioxide supply control means further has a first supply thermometer that detects the temperature of the carbon dioxide supplied to the carbon dioxide common pipe, and the carbon dioxide receiving control means further has a first receiving thermometer that detects the temperature of the carbon dioxide received from the carbon dioxide common pipe.

In a carbon recycle complex operation system according to one aspect of the present invention, it is preferable that the carbon dioxide supply control means controls the air supply pressure of the carbon dioxide compressor so as to maintain a constant pressure in the carbon dioxide common pipe based on the carbon dioxide supply control information.

In the carbon recycle complex operation system according to one embodiment of the present invention, it is preferable that the terminal is also connected to the carbon dioxide capture device, the server transmission means also transmits the carbon dioxide supply control information to the carbon dioxide capture device, and the carbon dioxide capture device constantly controls the operating state of the carbon dioxide capture device based on the carbon dioxide supply control information.

In a carbon recycle complex operation system according to one embodiment of the present invention, it is preferable that the carbon dioxide capture device controls the operating state of the carbon dioxide capture device so as to maintain a constant pressure in the carbon dioxide common pipe based on the carbon dioxide supply control information.

In a carbon recycle complex operation system according to one aspect of the present invention, the complex includes the hydrogen supplying company and the hydrogen receiving company, the hydrogen supply control means includes a hydrogen compressor that compresses hydrogen and sends it into the hydrogen common pipe, a second supply valve that controls the supply of hydrogen into the hydrogen common pipe, a second supply pressure gauge that detects the pressure of hydrogen supplied to the hydrogen common pipe, and a second supply flow meter that detects the flow rate of hydrogen supplied to the hydrogen common pipe, and it is preferable that the hydrogen receiving control means includes a second receiving valve that controls the reception of hydrogen from the hydrogen common pipe, a second receiving pressure gauge that detects the pressure of hydrogen received from the hydrogen common pipe, and a second receiving flow meter that detects the flow rate of hydrogen received from the hydrogen common pipe.

In the carbon recycle complex operation system according to one embodiment of the present invention, it is preferable that the hydrogen supply control means further has a second supply thermometer that detects the temperature of hydrogen supplied to the common hydrogen pipe, and the hydrogen receiving control means further has a second receiving thermometer that detects the temperature of hydrogen received from the common hydrogen pipe.

In a carbon recycle complex operation system according to one embodiment of the present invention, it is preferable that the hydrogen supply control means constantly controls the air supply pressure of the hydrogen compressor so as to maintain a constant pressure in the hydrogen common pipe based on the hydrogen supply control information.

In a carbon recycle combinat operation system according to one aspect of the present invention, it is preferable that the hydrogen receiving control means constantly transmits the pressure detected by the second receiving pressure meter and the flow rate detected by the second receiving flow meter to the hydrogen recovery device.

In the carbon recycling complex operation system according to one embodiment of the present invention, it is preferable that the terminal is also connected to the hydrogen recovery device, the server transmission means also transmits the hydrogen supply control information to the hydrogen recovery device, and the hydrogen recovery device constantly controls the operating state of the hydrogen recovery device based on the hydrogen supply control information.

In the carbon recycling complex operation system according to one embodiment of the present invention, it is preferable that at least one of the hydrogen supplying entities has a hydrogen import base for importing hydrogen, the hydrogen import base is connected to the hydrogen recovery device, and the terminal transmission means of the terminal transmits information regarding the amount of imported hydrogen that was supplied to the common hydrogen pipe out of the amount of imported hydrogen imported by the hydrogen import base to the server as the supply information.

In a carbon recycle complex operation system according to one embodiment of the present invention, it is preferable that the hydrogen recovery device controls the operating state of the hydrogen recovery device based on the hydrogen supply control information so as to maintain a constant pressure in the hydrogen common pipe.

In a carbon recycling complex operation system according to one embodiment of the present invention, it is preferable that at least one of the multiple corporations constituting the complex is a hydrogen supplying corporation capable of supplying hydrogen and a hydrogen receiving corporation capable of receiving hydrogen.

In a carbon recycle complex operation system according to one embodiment of the present invention, it is preferable that at least one of the hydrogen receiving entities has a plurality of carbon recycle devices, and that the hydrogen receiving entity has a plurality of branch pipes for branching and supplying hydrogen received from the common hydrogen pipe to the plurality of carbon recycle devices.

In one embodiment of the carbon recycling complex operation system of the present invention, it is preferable to have multiple carbon recycling devices.

In the carbon recycle complex operation system according to one embodiment of the present invention, the carbon recycle device preferably includes a device for producing at least one of methanol, methane, paraxylene, and dimethyl ether using carbon dioxide and hydrogen as raw materials.

In the carbon recycle complex operation system according to one embodiment of the present invention, it is preferable that the carbon recycle device includes at least one of a device that directly produces methanol using carbon dioxide and hydrogen as raw materials and a device that directly produces paraxylene.

In the carbon recycling complex operation system according to one embodiment of the present invention, the carbon recycling device preferably includes at least one of a device for producing C1 chemical products using at least one of methanol and dimethyl ether produced by carbon recycling as a raw material, and a device for directly producing paraxylene.

In the carbon recycle combinat operation system according to one aspect of the present invention, the carbon recycle device uses methanol produced by carbon recycling as a raw material,
It is preferable that the system includes at least one of a formaldehyde producing unit and an acetic acid producing unit.

In the carbon recycling complex operation system according to one embodiment of the present invention, the carbon recycling device preferably includes a device for producing olefins using methanol produced by carbon recycling as a raw material.

In the carbon recycling complex operation system according to one embodiment of the present invention, the carbon recycling device preferably includes a device for producing ethylene using dimethyl ether produced by carbon recycling as a raw material.

In the carbon recycle combinat operation system according to one embodiment of the present invention, the carbon recycle device includes at least one type of device that produces an oxygen-containing compound using carbon dioxide as a raw material, and the oxygen-containing compound is preferably at least one compound selected from the group consisting of polycarbonate, urea, salicylic acid, potassium parahydroxybenzoate, acetic acid, sodium carbonate, and methionine.

In the carbon recycle complex operation system according to one embodiment of the present invention, it is preferable that the carbon recycle device includes at least one of a device for liquefying carbon dioxide and a device for producing reinforced concrete using carbon dioxide as a raw material.

In the carbon recycling complex operation system according to one embodiment of the present invention, the carbon recycling device preferably includes a device for producing a superabsorbent resin using carbon dioxide and ethylene as raw materials.

In one embodiment of the carbon recycle combinat operation system of the present invention, it is preferable that the hydrogen supply device further includes at least one of a green hydrogen production device that produces green hydrogen and a carbon-free hydrogen import base, and that the hydrogen supply device supplies at least one of the manufactured green hydrogen produced by the green hydrogen production device and the imported carbon-free hydrogen imported by the carbon-free hydrogen import base to the common hydrogen piping.

In a carbon recycling complex operation system according to one embodiment of the present invention, the terminal transmission means transmits to the server at least one of the manufactured green hydrogen supply information of the manufactured green hydrogen supplied to the common hydrogen pipe and the imported carbon-free hydrogen supply information of the imported carbon-free hydrogen supplied to the common hydrogen pipe, the storage means of the server stores the manufactured green hydrogen supply information and the imported carbon-free hydrogen supply information, and the notification means preferably notifies the multiple business entities constituting the complex of at least one of the manufactured green hydrogen supply information and the imported carbon-free hydrogen supply information stored in the storage means.

In the carbon recycle combinat operation system according to one embodiment of the present invention, the hydrogen receiving device preferably causes the hydrogen receiving control means to detect a total amount of carbon-free hydrogen, including at least one of the amount of produced green hydrogen and the amount of imported carbon-free hydrogen received from the common hydrogen piping and supplied to the carbon recycle device, and transmits the total amount of carbon-free hydrogen to the server, the storage means stores the total amount of carbon-free hydrogen, and the calculation means calculates the mass proportion of the total amount of carbon-free hydrogen in the carbon recycled product obtained by recycling carbon dioxide in the carbon recycle device.

In the carbon recycling combinat operation system according to one embodiment of the present invention, the carbon recycling device preferably includes at least one of a device for producing carbon-free methanol, a device for producing carbon-free dimethyl ether, and a device for directly producing paraxylene using at least one of the produced green hydrogen and the imported carbon-free hydrogen and carbon dioxide as raw materials.

In the carbon recycle combinat operation system according to one embodiment of the present invention, it is preferable that the carbon recycle device includes an apparatus for producing C1 chemical products using at least one of the carbon-free methanol and the carbon-free dimethyl ether as a raw material.

In the carbon recycle combinat operation system according to one embodiment of the present invention, it is preferable that the carbon recycle device includes at least one of a device for producing formaldehyde or a device for producing acetic acid using the carbon-free methanol as a raw material.

In the carbon recycle complex operation system according to one embodiment of the present invention, the carbon recycle device preferably includes a device for producing olefins using the carbon-free methanol as a raw material.

In the carbon recycle complex operation system according to one embodiment of the present invention, the carbon recycle device preferably includes a device for producing ethylene using the carbon-free dimethyl ether as a raw material.

In a carbon recycling complex operation system according to one embodiment of the present invention, the carbon recycling device preferably includes a device for producing e-fuel using at least one of the produced green hydrogen and the imported carbon-free hydrogen, and carbon dioxide as raw materials.

In the carbon recycling combinat operation system according to one embodiment of the present invention, it is preferable that the carbon recycling device includes a device for producing green methane using at least one of the produced green hydrogen and the imported carbon-free hydrogen and carbon dioxide as raw materials.

In the carbon recycle combinat operation system according to one aspect of the present invention, it is preferable that the carbon dioxide receiving device detects the amount of carbon dioxide received from the carbon dioxide common pipe and supplied to the carbon recycle device using the carbon dioxide receiving control means and transmits the amount of carbon dioxide to the server, the storage means stores the amount of carbon dioxide, and the calculation means calculates the mass ratio of the amount of carbon dioxide in the carbon recycled product produced by the carbon recycle device using the recovered carbon dioxide.

In the carbon recycle complex operation system according to one embodiment of the present invention, it is preferable that the calculation means of the server has a cost calculation means for calculating at least one of the costs incurred by using the carbon dioxide received from the common carbon dioxide pipe and the costs incurred by using the hydrogen received from the common hydrogen pipe.

In the carbon recycle complex operation system according to one embodiment of the present invention, it is preferable that the carbon dioxide receiving device transmits the amount of carbon dioxide received and used from the common carbon dioxide pipe to the server as the receiving information, the hydrogen receiving device transmits the amount of hydrogen received and used from the common hydrogen pipe to the server as the receiving information, the storage means stores the amount of carbon dioxide used and the amount of hydrogen used, and the cost calculation means calculates the cost based on the amount of carbon dioxide used and the amount of hydrogen used.

In the carbon recycle complex operation system according to one aspect of the present invention, the input means inputs at least one of production cost information, which is information used by the carbon dioxide supplying company to calculate the production cost of the carbon dioxide supplied to the carbon dioxide common pipe and information used by the hydrogen supplying company to calculate the production cost of the hydrogen supplied to the hydrogen common pipe, the terminal transmission means transmits the production cost information to the server, the calculation means of the server has at least one of a carbon dioxide production cost calculation means for calculating the production cost of the carbon dioxide and a hydrogen production cost calculation means for calculating information on the production cost of the hydrogen, the carbon dioxide production cost calculation means is available only to the carbon dioxide supplying company, the hydrogen production cost calculation means is available only to the hydrogen supplying company, and the cost calculation means preferably performs at least one of the calculation of the cost of the carbon dioxide used by the carbon dioxide receiving company based on the amount of carbon dioxide used and the production cost of the carbon dioxide, and the calculation of the cost of the hydrogen used by the hydrogen receiving company based on the amount of hydrogen used and the production cost of the hydrogen.

In a carbon recycle complex operation system according to one embodiment of the present invention, the carbon recycle complex operation system preferably has an exhaust heat utilization means for recovering and consolidating exhaust heat generated by multiple enterprises other than the carbon dioxide supply enterprise and exhaust heat generated within the carbon dioxide supply enterprise, and supplying the recovered heat to the carbon dioxide recovery device.

In a carbon recycle complex operation system according to one embodiment of the present invention, it is preferable that the exhaust heat utilization means recovers exhaust heat generated in at least one of the carbon recycle devices.

In a carbon recycling complex operation system according to one embodiment of the present invention, it is preferable that the carbon dioxide common piping has an external receiving port for receiving carbon dioxide from a business entity outside the complex, and an external supply port for supplying carbon dioxide to a business entity outside the complex.

According to one aspect of the present invention, a carbon recycling complex operation system can be provided that can reduce the costs associated with carbon recycling.

FIG. 1 is a schematic diagram showing an operation system of a carbon recycle combinat according to one embodiment of the present invention. FIG. 2 is a schematic diagram showing common piping connecting each business entity in the carbon recycle complex. (A) is a schematic diagram showing the configuration of the carbon dioxide supply control means, (B) is a schematic diagram showing the configuration of the carbon dioxide acceptance control means, (C) is a schematic diagram showing the configuration of the hydrogen supply control means, and (D) is a schematic diagram showing the configuration of the hydrogen acceptance control means. FIG. 1A is a schematic diagram showing the configuration of a hydrogen supply device when liquid hydrogen is received at a hydrogen import terminal, and FIG. 1B is a schematic diagram showing the configuration of a hydrogen supply device when methylcyclohexane is received as a hydrogen carrier at a hydrogen import terminal. FIG. 2 is a schematic diagram showing the configuration of a server in the carbon recycle complex. (A) is a diagram showing the contents of the receiving information storage means in the embodiment, (B) is a diagram showing the contents of the planned use information storage means in the embodiment, and (C) is a diagram showing the contents of the supply information storage means in the embodiment. FIG. 11 is a schematic diagram for explaining the configuration of receiving and discharging carbon dioxide in a carbon recycle combinat according to a second embodiment. FIG. 11 is a schematic diagram for explaining another configuration for receiving and discharging carbon dioxide in a carbon recycle combinat according to a second embodiment. FIG. 11 is a schematic diagram showing a part of the operation system of the carbon recycle complex according to the second embodiment.

First Embodiment
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
In this embodiment, a carbon recycle complex operation system for recycling carbon dioxide generated in a complex made up of multiple business entities is described.
Fig. 1 is a schematic diagram showing a carbon recycle complex operation system according to the present embodiment. Fig. 2 is a schematic diagram showing a common piping system connecting the supply device and the receiving device of each business entity in the carbon recycle complex operation system according to the present embodiment.

This embodiment is an example of an integrated operation of a carbon recycling complex that can produce carbon recycled products such as methane, methanol, DME (dimethyl ether), SAP (superabsorbent polymer), and paraxylene using carbon dioxide and hydrogen or ethylene as raw materials, utilizing low-temperature exhaust heat steam, and sharing and managing utilities. The present invention is not limited to the example of the carbon recycling complex according to this embodiment.

Carbon dioxide is chemically inert and is used as an antioxidant, explosion prevention agent, and for storing food, etc. Furthermore, liquid carbon dioxide is used as a refrigerant for quick freezing, storage, and low-temperature grinding of food.
Carbon dioxide is recovered from exhaust gas from coal boilers in the petrochemical complex, and from exhaust gas from cement manufacturing or oil refining, and hydrogen is obtained as a by-product of electrolyzing sodium chloride-hydrogen to obtain hydrogen chloride. Furthermore, hydrogen is also produced in large quantities as a by-product when decomposing naphtha and LPG, and when producing paraxylene and gasoline base stocks. The hydrogen used in the petrochemical complex may be, for example, surplus hydrogen from the hydrogen production equipment, imported hydrogen, or hydrogen transported from another petrochemical complex.

・Company entities A to G
The carbon recycle complex according to this embodiment is composed of multiple enterprises A, B, C, D, E, F, and G that are collectively located in a specific area. In this specification, the enterprises A, B, C, D, E, F, and G may be collectively referred to as "enterprises A to G."

The multiple enterprises constituting the carbon recycling complex in this embodiment include both a combination of a carbon dioxide supply enterprise that supplies carbon dioxide and a carbon dioxide receiving enterprise that receives carbon dioxide, and a combination of a hydrogen supply enterprise that supplies hydrogen and a hydrogen receiving enterprise that receives hydrogen. In this embodiment, the carbon dioxide supply enterprises are enterprises A and B, the carbon dioxide receiving enterprises are enterprises C, D, and E, the hydrogen supply enterprises are enterprises A, B, and G, and the hydrogen receiving enterprises are enterprises C and F.
In this embodiment, the corporate entities that carry out carbon recycling are corporate entity C, corporate entity D, corporate entity E, and corporate entity F.
The enterprises A to G may each have a plant (not shown).

As shown in Figures 1 and 2, the carbon recycling complex operation system according to this embodiment includes an information network NW connected between multiple business entities A to G, multiple terminals 10A, 10B, 10C, 10D, 10E, 10F, 10G and a server 20 connected via the information network NW, a carbon dioxide common pipe 100 connecting a carbon dioxide supplying business entity and a carbon dioxide receiving business entity, a hydrogen common pipe 200 connecting a hydrogen supplying business entity and a hydrogen receiving business entity, carbon dioxide supply devices 300A, 300B installed in the carbon dioxide supplying business entity and supplying carbon dioxide to the carbon dioxide common pipe 100, and a carbon dioxide receiving unit 200. The system includes carbon dioxide receiving devices 400C, 400D, and 400E that are installed in the receiving company and receive carbon dioxide from the carbon dioxide common pipe 100, hydrogen supply devices 500A, 500B, and 500G that are installed in the hydrogen supply company and supply hydrogen to the hydrogen common pipe 200, hydrogen receiving devices 600C and 600F that are installed in the hydrogen receiving company and receive hydrogen from the hydrogen common pipe 200, and carbon recycling devices 700C, 700D, 700E, and 700F that are installed in at least one of the carbon dioxide receiving company and the hydrogen receiving company, and in a company that implements carbon recycling, for recycling carbon dioxide.

(Information Network)
The information network NW is a means of communication for mutual exchange of information between different business entities A to G within the petrochemical complex. As a means of communication, a wireless Internet cloud system is used to transmit factory information within the petrochemical complex. For example, a vendor cloud service within a cloud environment in a closed network is used to ensure security.
The remote station server (RTDB: Real Time Data Base) is used to store and analyze operational data and to create documents for mutual exchange. Operational data can be stored for more than 10 years, and the processing speed is such that up to one minute of data can be processed in real time without any problems, so there is no need to spend time on storing data periodically.
For unmanned automatic operation of carbon dioxide capture equipment of multiple companies, by utilizing the integrated gateway system function, DCS (Distributed Control System) and PLC (Programmable Logic Controller) of different vendors can be monitored and operated on a unified vendor's operator console. For additional installation of various sensors required by each company, an industrial wireless LAN environment can be utilized, and by installing wireless sensors, cable laying is unnecessary, so it is expected that the cost reduction and labor saving for maintenance and improvement of the entire system can be expected compared to performing it by each company.

(Common piping for carbon dioxide)
The carbon dioxide common pipe 100 is a pipe connecting the companies A and B as carbon dioxide supply companies and the companies C, D, and E as carbon dioxide receiving companies. The carbon dioxide common pipe 100 has first supply ports 320A and 320B and first receiving ports 420C, 420D, and 420E. The first supply ports 320A and 320B are connected to supply pipes for supplying carbon dioxide from the carbon dioxide supply devices 300A and 300B of the companies A and B to the carbon dioxide common pipe 100. The first receiving ports 420C, 420D, and 420E are connected to receiving pipes for guiding the carbon dioxide received from the carbon dioxide common pipe 100 to the carbon dioxide receiving devices 400C, 400D, and 400E of the companies C, D, and E, respectively.

(Common hydrogen piping)
The hydrogen common pipe 200 is a pipe that connects the hydrogen supplying companies A, B, and G to the hydrogen receiving companies C and F. The hydrogen common pipe 200 has second supply ports 520A, 520B, and 520G and second receiving ports 620C and 620F. The second supply ports 520A, 520B, and 520G are connected to supply pipes for supplying hydrogen from hydrogen supply devices 500A, 500B, and 500G of the companies A and B to the hydrogen common pipe 200. The second receiving ports 620C and 620F are connected to receiving pipes for guiding the hydrogen received from the hydrogen common pipe 200 to the hydrogen receiving devices 600C and 600F of the companies C and F, respectively.

(Carbon dioxide supply device)
The carbon dioxide supplying apparatus is an apparatus for recovering and supplying carbon dioxide. In this embodiment, the corporations A and B own the carbon dioxide supplying apparatuses 300A and 300B, respectively, and the corporations A and B manage the recovery and supply of carbon dioxide.
The carbon dioxide supplying devices 300A, 300B include carbon dioxide recovery devices 310A, 310B that recover carbon dioxide generated by the carbon dioxide supplying enterprise, and carbon dioxide supply control means 330A, 330B that are connected to first supply ports 320A, 320B of the carbon dioxide common pipe and control the supply of carbon dioxide. The carbon dioxide supply control means 330A, 330B and the carbon dioxide common pipe 100 are connected by a supply pipe.

The carbon dioxide capture devices 310A and 310B are not particularly limited as long as they are capable of capturing carbon dioxide generated in the carbon recycle complex, but examples include devices that desorb carbon dioxide from a solution that has captured carbon dioxide (e.g., an amine solution), and the main utility used to capture carbon dioxide in this device is low-temperature, low-pressure steam (low-temperature exhaust heat).

Companies A and B each use electricity generated by, for example, a coal boiler. Carbon dioxide generated from the coal boilers of companies A and B is captured by carbon dioxide capture devices 310A and 310B of companies A and B, respectively, and supplied to the carbon dioxide common pipe 100 by carbon dioxide supply control means 330A and 330B. For example, company B has a coal boiler 901B as shown in FIG. 2. This coal boiler 901B is connected to a carbon dioxide capture device 310B and an electrolysis device 900B. Carbon dioxide generated from the coal boiler 901B is captured by the carbon dioxide capture device 310B.

3A, each of the carbon dioxide supply control means 330A and 330B has a carbon dioxide compressor 331 such as a compressor that compresses carbon dioxide and sends it into the carbon dioxide common pipe 100, a first supply valve 332 that controls the supply of carbon dioxide into the carbon dioxide common pipe 100, a first supply pressure meter 333 that detects the supply pressure of carbon dioxide supplied to the carbon dioxide common pipe 100, a first supply flow meter 334 that detects the flow rate (supply amount) of carbon dioxide supplied to the carbon dioxide common pipe 100, and a first supply thermometer 335 that detects the temperature of carbon dioxide supplied to the carbon dioxide common pipe 100. The pressure of the carbon dioxide common pipe 100 can be controlled to a constant value by at least one of the carbon dioxide supply control means 330A and 330B.

The carbon dioxide capture devices 310A, 310B and the carbon dioxide supply control means 330A, 330B are connected to the terminals 10A, 10B, respectively, as shown in FIG. 1. The carbon dioxide supply control means 330A, 330B transmit the detected values (supply information) to the server 20 via the terminals 10A, 10B.

(Carbon dioxide receiving device)
The carbon dioxide receiving apparatus is an apparatus that receives carbon dioxide from a carbon dioxide common pipe and supplies the carbon dioxide to the carbon recycle apparatus. In this embodiment, the enterprises C, D, and E own carbon dioxide receiving apparatuses 400C, 400D, and 400E, respectively.
The carbon dioxide receiving devices 400C, 400D, and 400E have carbon dioxide receiving control means 430C, 430D, and 430E, respectively. The carbon dioxide receiving control means 430C, 430D, and 430E are connected to first receiving ports 420C, 420D, and 420E of the carbon dioxide common pipe 100. The carbon dioxide receiving devices 400C, 400D, and 400E are connected to the carbon dioxide common pipe 100 by receiving pipes.
As shown in Figure 3 (B), the carbon dioxide receiving control means 430C, 430D, 430E have a first receiving valve 432 that controls the receiving of carbon dioxide from the carbon dioxide common piping 100, a first receiving pressure meter 433 that detects the receiving pressure of the carbon dioxide received from the carbon dioxide common piping 100, a first receiving flow meter 434 that detects the flow rate (received amount) of carbon dioxide received from the carbon dioxide common piping, and a first receiving thermometer 435 that detects the temperature of the carbon dioxide received from the carbon dioxide common piping 100.

As shown in FIG. 1, the carbon dioxide receiving control means 430C, 430D, 430E are connected to terminals 10C, 10D, 10E, respectively, and the values (receiving information) detected by the carbon dioxide receiving control means 430C, 430D, 430E are transmitted from the terminals 10C, 10D, 10E via the server 20 to the terminals 10A, 10B of the business entities A, B acting as carbon dioxide supply companies.

(Hydrogen supply device)
The hydrogen supply device is a device that collects and supplies hydrogen. In this embodiment, the corporations A, B, and G own hydrogen supply devices 500A, 500B, and 500G, respectively, and the corporations A, B, and G manage the collection and supply of hydrogen.
The hydrogen supply devices 500A, 500B, and 500G each have a hydrogen recovery device 510A, 510B, and 510G that recovers hydrogen generated by a hydrogen supplying company, and a hydrogen supply control means 530A, 530B, and 530G that is connected to a second supply port 520A, 520B, and 520G of the hydrogen common pipe 200 and controls the supply of hydrogen. The hydrogen supply control means 530A, 530B, and 530G are connected to the hydrogen common pipe 200 by a supply pipe. The carbon recycling complex according to this embodiment preferably has a base that can import not only green hydrogen (manufactured green hydrogen) produced in the complex, but also blue hydrogen produced by underground burying carbon dioxide in carbon capture and storage (CCS), and carbon-free hydrogen such as brown hydrogen made from lignite. Carbon-free hydrogen imported at the import base may be referred to as imported carbon-free hydrogen. The hydrogen supply device may be a device that supplies at least one of manufactured green hydrogen produced by a green hydrogen production device and imported carbon-free hydrogen imported at a carbon-free hydrogen import base to the common hydrogen pipe. In this specification, imported carbon-free hydrogen that is blue hydrogen may be referred to as imported blue hydrogen, green hydrogen may be referred to as imported green hydrogen, and brown hydrogen may be referred to as imported brown hydrogen.

The hydrogen recovery devices 510A, 510B, and 510G are not particularly limited as long as they can recover hydrogen generated in the carbon recycle complex, but are, for example, pressure swing adsorption (PSA) type devices or hydrogen separation and recovery type devices. The carbon recycle complex operation system according to this embodiment can also utilize the hydrogen generated in large quantities from the surplus hydrogen production device in the oil refinery, natural gas from nearby electric power and gas companies, and methane and ethane in the company's own fuel for carbon recycling. It is even more preferable if the carbon recycle complex has a dry reforming device that generates hydrogen from methane and carbon dioxide as raw materials, or a newly installed dry reforming device, which is a hydrogen production device (SMR) from the surplus hydrogen production device in the oil refinery. The carbon recycling complex operating system of this embodiment can also utilize the large amounts of hydrogen generated by dry reforming using natural gas from nearby electric power and gas companies, as well as methane and ethane in the company's own fuel, for carbon recycling. Methanol can also be produced in the methanol production equipment using the hydrogen and carbon monoxide (synthetic gas) by-products from the dry reforming.

Enterprise A has an ethylene production unit 900A and a heavy naphtha catalytic reforming unit 901A. As shown in Fig. 2, the ethylene production unit 900A is connected to the hydrogen recovery unit 510A of the hydrogen supply unit 500A and the carbon recycle unit 700C of enterprise C. As shown in Fig. 2, the heavy naphtha catalytic reforming unit 901A is connected to the hydrogen recovery unit 510A of the hydrogen supply unit 500A.
A portion of the ethylene produced in ethylene production unit 900A of enterprise A can be supplied to carbon recycle unit 700C of enterprise C.
Hydrogen produced as a by-product during the production of ethylene in the ethylene production unit 900A, and hydrogen produced as a by-product during the catalytic reforming of heavy naphtha in the heavy naphtha catalytic reforming unit 901A are recovered by the hydrogen recovery unit 510A and supplied to the common hydrogen piping 200 by the hydrogen supply unit 500A.

The enterprise B has an electrolysis device 900B for sodium chloride (table salt). As shown in FIG. 2, the electrolysis device 900B is connected to the hydrogen recovery device 510B of the hydrogen supply device 500B and the coal boiler 901B. The electrolysis device 900B electrolyzes table salt to produce chlorine (Cl ₂ ) using the power generated by the coal boiler 901B. The hydrogen generated as a by-product when the electrolysis device 900B electrolyzes table salt to produce chlorine (Cl ₂ ) is recovered by the hydrogen recovery device 510B and supplied to the hydrogen common pipe 200 by the hydrogen supply control means 530B. The enterprise B also electrolyzes table salt in the electrolysis device 900B using the power generated by the coal boiler, for example. The carbon dioxide generated from the coal boiler of the enterprise B is recovered by the carbon dioxide recovery device 310B as described above, and supplied to the carbon dioxide common pipe 100 by the carbon dioxide supply control means 330B.

The hydrogen supply device 500G of the enterprise G has a green hydrogen production device 550G that produces green hydrogen. The green hydrogen produced by the green hydrogen production device 550G is recovered by a hydrogen recovery device 510G and supplied to the hydrogen common pipe 200 by a hydrogen supply control means 530G. The green hydrogen production device 550G is a water electrolysis device that can produce hydrogen by electrolyzing water using electricity generated, for example, from renewable energy, bio, etc.

In addition, the hydrogen supply device 500G of the enterprise G has a hydrogen import base 560G that can import carbon-free hydrogen. The hydrogen import base 560G is connected to the hydrogen recovery device 510G. The hydrogen recovery device 510G has a means for selectively switching the hydrogen to be recovered. For example, the hydrogen recovery device 510G may recover only the green hydrogen produced by the green hydrogen production device 550G, may recover only the imported hydrogen imported by the hydrogen import base 560G, or may recover both the green hydrogen and the imported hydrogen at the same time. The carbon-free hydrogen imported by the hydrogen import base 560G is supplied to the hydrogen common pipe 200 together with the green hydrogen produced by the green hydrogen production device 550G.
The terminal transmission means 141 of the terminal 10G of the enterprise G receives from the hydrogen supply control means 530G manufactured green hydrogen supply information of the manufactured green hydrogen supplied to the hydrogen common pipe 200, and imported carbon-free hydrogen supply information of the imported carbon-free hydrogen supplied to the hydrogen common pipe 200, and transmits these supply information to the server 20. The manufactured green hydrogen supply information includes information on the amount of green hydrogen manufactured by the green hydrogen manufacturing device 550G and supplied to the hydrogen common pipe 200, and the imported carbon-free hydrogen supply information includes information on the amount of imported carbon-free hydrogen supplied to the hydrogen common pipe 200 out of the amount of imported hydrogen imported by the hydrogen import base 560G.
In the carbon recycling complex according to this embodiment, it is preferable that hydrogen generated or produced within the complex is used preferentially as the hydrogen used for carbon recycling, and when there is a shortage, the hydrogen recovery device 510G recovers imported hydrogen from the hydrogen import terminal 560G and supplies it to the common hydrogen piping 200 via the hydrogen supply control means 530G.

When three types of liquid hydrogen are received in the same tank for each lot at the hydrogen import terminal 560G, the hydrogen supply device 500G of the corporate entity G has the configuration shown in FIG. 4(A). In this case, the hydrogen import terminal 560G has a receiving tank 561G for storing the received liquid hydrogen, a dedicated loading arm 562G for unloading liquid hydrogen from a liquid hydrogen carrier, and a liquid hydrogen vaporizer 563G.

When methylcyclohexane (sometimes abbreviated as MCH) is received as a hydrogen carrier in a receiving tank 564G at a hydrogen import terminal 560G, the hydrogen supply device 500G of the corporate entity G has the configuration shown in FIG. 4(B). In this case, the hydrogen import terminal 560G has a receiving tank 564G for storing the received hydrogen carrier methylcyclohexane, a loading arm 565G for unloading liquid methylcyclohexane, and a hydrogen desorption device 566G for desorbing hydrogen from the methylcyclohexane.

As shown in FIG. 3C, each of the hydrogen supply control means 530A, 530B, and 530G includes a hydrogen compressor 531 such as a compressor that compresses hydrogen and sends it into the hydrogen common pipe 200, a second supply valve 532 that controls the supply of hydrogen into the hydrogen common pipe 200, a second supply pressure gauge 533 that detects the supply pressure of hydrogen supplied to the hydrogen common pipe 200, a second supply flow meter 534 that detects the flow rate (supply amount) of hydrogen supplied to the hydrogen common pipe 200, and a second supply thermometer 535 that detects the temperature of hydrogen supplied to the hydrogen common pipe 200. The pressure of the hydrogen common pipe 200 can be controlled to a constant value by at least one of the hydrogen supply control means 530A, 530B, and 530G.

As shown in FIG. 1, the hydrogen recovery devices 510A, 510B, 510G and the hydrogen supply control means 530A, 530B, 530G are connected to the terminals 10A, 10B, 10G, respectively. The hydrogen supply control means 530A, 530B, 530G transmit the detected values (supply information) to the server 20 via the terminals 10A, 10B, 10G.

(Hydrogen receiving device)
The hydrogen receiving device is a device that receives hydrogen from the common hydrogen piping and supplies hydrogen to the carbon recycle device. In this embodiment, the enterprises C and F each own a hydrogen receiving device 600C, 600F.
The hydrogen receiving devices 600C, 600F have hydrogen receiving control means 630C, 630F, respectively. The hydrogen receiving control means 630C, 630F are connected to second receiving ports 620C, 620F of the hydrogen common pipe 200. The hydrogen receiving control means 630C, 630F and the hydrogen common pipe 200 are connected by a receiving pipe.

As shown in FIG. 3(D), the hydrogen receiving control means 630C, 630F of the companies C, F each have a second receiving valve 632 that controls the receiving of hydrogen from the hydrogen common pipe 200, a second receiving pressure gauge 633 that detects the receiving pressure of hydrogen received from the hydrogen common pipe 200, a second receiving flow meter 634 that detects the flow rate (received amount) of hydrogen received from the hydrogen common pipe 200, and a second receiving thermometer 635 that detects the temperature of hydrogen received from the hydrogen common pipe 200.

As shown in FIG. 1, the hydrogen receiving control means 630C, 630F are connected to terminals 10C, 10F, respectively, and the values (receiving information) detected by the hydrogen receiving control means 630C, 630F are transmitted from the terminals 10C, 10F via the server 20 to the terminals 10A, 10B, 10G of the companies A, B, G, which act as hydrogen supply companies.

The hydrogen receiving devices 600C, 600F respectively detect the total amount of carbon-free hydrogen, including at least one of the amount of produced green hydrogen and the amount of imported carbon-free hydrogen, received from the common hydrogen piping 200 and supplied to the carbon recycling devices 700C, 700F, using the hydrogen receiving control means 630C, 630F, and transmit the total amount of carbon-free hydrogen to the server 20.

(Carbon recycling equipment)
The carbon recycling device according to the present embodiment is not particularly limited as long as it is a device that performs carbon recycling using at least carbon dioxide as a raw material. Furthermore, each business entity that performs carbon recycling may independently have only one type of device as a carbon recycling device, or may have multiple types of devices, and the carbon recycling device is, for example, at least one device selected from the group consisting of the devices shown below.

The carbon recycling apparatus preferably includes an apparatus for producing at least one of methanol, methane, paraxylene, and dimethyl ether using carbon dioxide and hydrogen as raw materials, and more preferably includes at least one of an apparatus for directly producing methanol and an apparatus for directly producing paraxylene using carbon dioxide and hydrogen as raw materials.
In addition, it is preferable that the carbon recycling device includes at least one of a device for producing carbon-free methanol, a device for producing carbon-free dimethyl ether, and a device for directly producing paraxylene using at least one of produced green hydrogen and imported carbon-free hydrogen and carbon dioxide as raw materials.
In addition, it is preferable that the carbon recycling device includes a device that produces green methane using at least one of the produced green hydrogen and the imported carbon-free hydrogen and carbon dioxide as raw materials.

In addition, the carbon recycling device preferably includes a device for producing other chemical products such as formaldehyde and acetic acid through C1 chemical development using methanol as a base substance, and preferably includes a device for producing ethylene and propylene through MTO (methanol to olefin).
It is also preferable that the carbon recycling unit includes at least one of a unit for producing C1 chemical products using at least one of methanol and dimethyl ether produced by carbon recycling as a raw material, and a unit for directly producing paraxylene.
In addition, it is preferable that the carbon recycle device includes a device for producing a C1 chemical product using at least one of the carbon-free methanol and the carbon-free dimethyl ether as a raw material.

It is also preferable that the carbon recycling device includes at least one of a device for producing formaldehyde or a device for producing acetic acid using methanol produced by carbon recycling as a raw material.
In addition, it is preferable that the carbon recycle device includes at least one of a device for producing formaldehyde or a device for producing acetic acid using carbon-free methanol as a raw material.

In addition, the carbon recycling unit preferably includes a unit for producing olefins using methanol produced by carbon recycling as a raw material.
In addition, the carbon recycling device preferably includes a device for producing olefins using carbon-free methanol as a raw material.

In addition, it is also preferable that the carbon recycling device includes a device for producing ethylene using dimethyl ether produced by carbon recycling as a raw material.
In addition, the carbon recycle unit preferably includes a unit for producing ethylene using carbon-free dimethyl ether as a raw material.

The carbon recycle device preferably includes at least one device for producing an oxygen-containing compound using carbon dioxide as a raw material. The oxygen-containing compound is preferably at least one compound selected from the group consisting of polycarbonate, urea, salicylic acid, potassium parahydroxybenzoate, acetic acid, sodium carbonate, and methionine.
If a company can produce ammonia using carbon dioxide as a raw material, it can also produce oxygen-containing compounds such as urea. Similarly, oxygen-containing compounds such as polycarbonate can be produced using carbon dioxide and compounds such as ethylene oxide produced by chemical companies inside or outside the petrochemical complex as raw materials. In this case, it is also preferable that the carbon recycling device includes at least one of a device for producing polycarbonate and a device for producing urea using carbon dioxide as a raw material.

The carbon recycling device also preferably includes a device for producing a highly water-absorbent resin using carbon dioxide and ethylene as raw materials.
It is also preferable that the carbon recycling device includes at least one of a device for liquefying carbon dioxide and a device for producing reinforced concrete using carbon dioxide as a raw material.

It is also preferable that the carbon recycling device includes a device for producing e-fuel (green jet fuel, green diesel, etc.) using at least one of the produced green hydrogen and imported carbon-free hydrogen and carbon dioxide as raw materials.

The petrochemical complex could be used as a carbon dioxide supply hub to supply carbon dioxide via pipeline to local greenhouses, improving the efficiency of agricultural production of vegetables and other crops. A similar approach could be used for chlorella production, etc.

In this embodiment, business entities C, D, E, and F own carbon recycling devices 700C, 700D, 700E, and 700F, respectively.

The carbon recycle device 700C of the enterprise C is connected to the carbon dioxide receiving device 400C and the hydrogen receiving device 600C. The carbon recycle device 700C is composed of multiple carbon recycle devices 701, 702, and 703. The carbon recycle devices 701 and 702 are devices that perform carbon recycling using hydrogen received from the common hydrogen pipe 200 as a raw material. Therefore, as shown in FIG. 2, the hydrogen receiving device 600C of the enterprise C has multiple branch pipes 640C for branching and supplying the hydrogen received from the common hydrogen pipe 200 to the multiple carbon recycle devices 701 and 702.

The carbon recycling device 701 is a device that produces methane using carbon dioxide received from the carbon dioxide common pipe 100 and hydrogen received from the hydrogen common pipe 200 as raw materials. The methane produced by the methanation (methane production device) may be used, for example, as a methanol raw material, or may be mixed with LPG or the like and calorie-adjusted (city gas heat value adjusted) to city gas specifications and supplied to a gas supply pipeline of a gas company close to the business entity C.

The carbon recycle device 702 is a device that produces methanol using carbon dioxide received from the carbon dioxide common pipe 100 and hydrogen received from the hydrogen common pipe 200 as raw materials. Alternatively, the carbon recycle device 701 (methane production device) and the carbon recycle device 702 (methanol production device) may be connected, and the carbon recycle device 702 may be configured to produce methanol using methane produced in the methane production device and oxygen.

The carbon recycling device 702 may be configured to further produce dimethyl ether using the produced methanol, or a dimethyl ether production device (not shown) may be installed separately as a carbon recycling device. The produced dimethyl ether may be supplied to each enterprise, or may be used as a gas turbine fuel for the enterprise, or may be used as a raw material for an ethylene production cracking furnace of the enterprise A, or may be used to improve the cetane number of diesel fuel of the enterprise A. Since the supply and demand of methanol, which is the core material of carbon recycling, fluctuates greatly in conjunction with crude oil prices, etc., it is preferable that the industrial complex according to this embodiment has a large methanol import/export base, and the enterprise C in which the methanol production device is installed has an import/export base (methanol import/export base 920C) that can import and export methanol. The methanol import/export base 920C can be shipped not only to overseas but also to domestic destinations.
The methanol import/export terminal 920C is connected to the carbon recycle unit 702 (methanol production unit). Methanol produced in the carbon recycle unit 702 (methanol production unit) is transported to the methanol import/export terminal 920C, which can ship the methanol. The methanol import/export terminal 920C can also export the imported and produced methanol together.
The methanol imported at the methanol import/export terminal 920C may be utilized to continue a stable supply to users while the carbon recycle unit 702 (methanol production unit) is stopped for repairs or the like, or the methanol imported from around the world may be combined with the methanol produced in the carbon recycle unit 702 (methanol production unit) and supplied (exported or shipped) in bulk to methanol users.

The carbon recycle device 703 is a device that produces superabsorbent resin using carbon dioxide received from the carbon dioxide common pipe 100 and ethylene received from corporate entity A as raw materials.

The carbon recycling device 700D of the enterprise D is connected to the carbon dioxide receiving device 400D. The carbon recycling device 700D of the enterprise D is preferably an apparatus (e.g., an apparatus for producing paraxylene) that produces a type of carbon recycling product different from that of the other carbon recycling devices 701, 702, 703, using carbon dioxide received from the carbon dioxide common pipe 100 and hydrogen generated in the hydrogen generating device 900D in the enterprise D as raw materials. This apparatus for producing paraxylene is preferably an apparatus for producing carbon-free paraxylene using carbon-free hydrogen. In this case, the enterprise D has a paraxylene export shipping base that can export or ship paraxylene (preferably carbon-free paraxylene), thereby enabling stable operation and supply of the paraxylene production apparatus.

The carbon recycling device 700E of the enterprise E is connected to the carbon dioxide receiving device 400E. The carbon recycling device 700E of the enterprise E is an apparatus that liquefies carbon dioxide using the carbon dioxide received from the carbon dioxide common pipe 100 as a raw material. It is preferable that the enterprise E has a facility (such as a tanker) for shipping liquefied carbon dioxide (liquefied CO ₂ ). Examples of uses for liquefied CO ₂ include dry ice and a raw material for carbonated drinks.

Carbon recycle device 700F of enterprise F is connected to hydrogen receiving device 600F. Carbon recycle device 700F is preferably an apparatus that uses hydrogen received from common hydrogen piping 200 and carbon dioxide generated in carbon dioxide generation device 900F in enterprise F as raw materials to manufacture a type of carbon recycle product different from that of the other carbon recycle devices 701, 702, and 703.
It is also preferable that at least one of the enterprises A to G has an apparatus for producing C1 chemical products using methanol and dimethyl ether as carbon recycling products as raw materials, and an apparatus for directly producing paraxylene.

(Terminal)
The terminals are installed in a plurality of business entities A to G that constitute the industrial complex according to this embodiment. The terminals exchange information between the business entities A to G and with the server 20 through the information network NW. Terminals 10A, 10B, 10C, 10D, 10E, 10F, and 10G are installed in each of the business entities A to G. In this specification, terminals 10A, 10B, 10C, 10D, 10E, 10F, and 10G may be collectively referred to as "terminals 10A to 10G."

The terminals 10A to 10G are connected to at least one of a carbon dioxide supply device, a hydrogen supply device, a carbon dioxide receiving device, and a hydrogen receiving device owned by the business entity in which the terminals are installed.The terminals 10A to 10G are connected to at least one of a carbon dioxide capture device, a carbon dioxide supply control means, a carbon dioxide receiving control means, a hydrogen capture device, a hydrogen supply control means, and a hydrogen receiving control means owned by the business entity in which the terminals are installed.

As shown in FIG. 1, the terminals 10A and 10B are connected to carbon dioxide recovery units 310A and 310B, carbon dioxide supply control means 330A and 330B, hydrogen recovery units 510A and 510B, and hydrogen supply control means 530A and 530B, respectively.
As shown in FIG. 1, the terminal 10C is connected to the carbon dioxide receiving control means 430C and the hydrogen receiving control means 630C.
As shown in FIG. 1, the terminals 10D and 10E are connected to carbon dioxide receiving control means 430D and 430E, respectively.
As shown in FIG. 1, the terminal 10F is connected to a hydrogen receiving control means 630F.
As shown in FIG. 1, the terminal 10G is connected to a hydrogen recovery device 510G and a hydrogen supply control means 530G.

The terminals 10A to 10G each independently include a display means 11, an input means 12, a storage means 13, and a control means 14 consisting of a CPU, etc.

In this embodiment, the information exchanged between terminals 10A-10G and server 20 when performing carbon recycling includes planned use information, supply information, and receipt information, but the present invention is not limited to these pieces of information.

Planned use information is information about the planned future use amounts and planned use pressures of carbon dioxide and hydrogen of the corporate entity implementing carbon recycling. In this embodiment, the planned use information also includes the planned use amount of ethylene that corporate entity C plans to use for carbon recycling.

Supply information The supply information is information on the supply amount and supply pressure of carbon dioxide supplied by the carbon dioxide supplying company to the carbon dioxide common pipe 100, and information on the supply amount and supply pressure of hydrogen supplied by the hydrogen supplying company to the hydrogen common pipe 200. The supply information is a value detected by the first supply flow meter 334 and the first supply pressure meter 333 of the carbon dioxide supply control means 330A, 330B, and the second supply flow meter 534 and the second supply pressure meter 533 of the hydrogen supply control means 530A, 530B, 530G. In this embodiment, the supply information also includes information on the supply amount and supply pressure of ethylene supplied from the company A to the company C for use in carbon recycling. The supply information also includes the above-mentioned manufactured green hydrogen supply information and imported carbon-free hydrogen supply information regarding hydrogen supplied by the company G to the hydrogen common pipe 200.

Receiving information The receiving information is information on the amount and pressure of carbon dioxide received by the carbon dioxide receiving company from the carbon dioxide common pipe 100, and information on the amount and pressure of hydrogen received by the hydrogen receiving company from the hydrogen common pipe 200. The receiving information is a value detected by the first receiving flow meter 434 and the first receiving pressure meter 433 of the carbon dioxide receiving control means 430C, 430D, 430E, and the second receiving flow meter 634 and the second receiving pressure meter 633 of the hydrogen receiving control means 630C, 630F. In this embodiment, the receiving information also includes information on the amount and pressure of ethylene received by the company C for use in carbon recycling. The receiving information also includes the total amount of carbon-free hydrogen mentioned above.

The planned use information, supply information, and receipt information are input by the input means 12, but other information (such as the unit price of utilities) can also be input by the input means 12.
The input means 12 may be a key input means provided in a terminal. When inputting receiving information, the input means 12 may be the first supply flowmeter 334, the first receiving flowmeter 434, the second supply flowmeter 534, and the second receiving flowmeter 634. By using the first receiving flowmeter 434 and the second receiving flowmeter 634, information on the received amounts of carbon dioxide and hydrogen can be automatically input. In addition, a third receiving flowmeter (not shown) is also attached as the input means 12 to the supply pipe that supplies ethylene from the ethylene production apparatus 900A to the carbon recycling apparatus 700C, and information on the received amount of ethylene (receiving information) can be automatically input by using the third receiving flowmeter.

The storage means 13 can store information such as planned use information, supply information, and receipt information.

The control means 14 includes a terminal transmission means 141 and a display control means 142 .
The terminal transmission means 141 transmits information such as planned usage information, supply information received from at least one of the carbon dioxide supply control means and the hydrogen supply control means, and acceptance information transmitted from the carbon dioxide acceptance control means and the hydrogen acceptance control means to the server 20.
The terminal transmission means 141 can also transmit other information inputted from the input means 12 to the server 20 .
The display control means 142 causes the display means 11 to display the content received from the server 20 .

(server)
The server 20 exchanges information with the terminals 10A to 10G installed in the business entities A to G, and collectively manages raw materials such as carbon dioxide and hydrogen, as well as utilities, relating to carbon recycling.
5, the server 20 includes a display means 21, an input means 22, a storage means 23, a control means 24 consisting of a CPU etc. connected to the information network NW via an input/output control unit 25, a valve control unit 26 connected to the control means 24 and controlling the opening of the first supply valve 332, the second supply valve 532, the first receiving valve 432 and the second receiving valve 632, and a server transmission means 27. In FIG. 5, "carbon dioxide" is represented as "CO ₂ " and "hydrogen" is represented as "H ₂ ".
Server 20 may be installed in at least one of corporate entities A to G, but from the standpoint of ensuring cybersecurity, it is preferable for it to be centrally managed via the cloud.

The storage means 23 (memory device) stores information such as the usage schedule information, supply information, and receipt information transmitted by the terminal transmission means 141. The storage means 23 of the server 20 also stores the total amount of carbon-free hydrogen as receipt information.
The storage means 23 includes a program storage unit 231 which is a recording medium storing a program for controlling the server 20, an acceptance information storage means 232 which stores acceptance information of the carbon dioxide accepting company and the hydrogen accepting company, a usage plan information storage means 233 which stores usage plan information of the carbon dioxide accepting company and the hydrogen accepting company, a supply information storage means 234 which stores supply information of the carbon dioxide supplying company and the hydrogen supplying company, and a business information storage means 235 which stores business information such as the prices of carbon dioxide and hydrogen.

As shown in FIG. 6A, the receiving information storage means 232 stores, for each of the corporations A to G, performance data on the amounts and pressures of carbon dioxide and hydrogen received by that corporation.
As shown in FIG. 6B, the planned use information storage means 233 stores, for each of the corporations A to G, the planned amounts and planned pressures of carbon dioxide and hydrogen that the corporations plan to use in the future.
As shown in FIG. 6C, the supply information storage means 234 stores, for each of the companies A to G, performance data on the supply amounts and supply pressures of carbon dioxide and hydrogen for that company.

As shown in FIG. 5, the control means 24 includes a writing means 241, a notification means 242, a publishing means 243, a calculation means 244, and a power steam balance optimization means 245.

The writing means 241 stores the planned use information, supply information, and receipt information in the planned use information storage means 233, the supply information storage means 234, and the receipt information storage means 232 of the storage means 23, respectively.

The notification means 242 notifies the business entities A to G of the planned use information, supply information, and receipt information stored in the planned use information storage means 233, the supply information storage means 234, and the receipt information storage means 232 of the storage means 23.

The publishing means 243 publishes the business information stored in the business information storage means 235 to each of the terminals 10A to 10G.

The calculation means 244 (optimum securing amount calculation means) calculates the optimal securing amount of carbon dioxide and hydrogen, etc., based on the information stored in the receipt information storage means 232 and the usage schedule information storage means 233. The calculation means 244 is a calculation algorithm.

The calculation means 244 has carbon dioxide supply control information generation means 2441, hydrogen supply control information generation means 2442, expense calculation means 2443, carbon dioxide production cost calculation means 2444, hydrogen production cost calculation means 2445, carbon-free rate calculation means 2446, and carbon recycle rate calculation means 2447. In the drawing, "methanol" may be written as CH ₃ OH.

The carbon dioxide supply control information generating means 2441 generates carbon dioxide supply control information for controlling the supply of carbon dioxide by the carbon dioxide supply control means 330A, 330B based on the receiving information.
The hydrogen supply control information generating means 2442 generates hydrogen supply control information for controlling the supply of hydrogen by the hydrogen supply control means 530A, 530B, 530G based on the reception information.

The cost calculation means 2443 calculates at least one of the cost incurred due to the use of carbon dioxide received from the carbon dioxide common pipe 100 and used, and the cost incurred due to the use of hydrogen received from the hydrogen common pipe 200 and used.
In this embodiment, the cost calculation means 2443 automatically calculates the costs incurred by the use of carbon dioxide, hydrogen, ethylene, etc., so that the burden of billing work related to the costs can be reduced on the enterprises. Here, the costs incurred by the use of carbon dioxide, hydrogen, ethylene, etc. refer to the fees for the use of carbon dioxide, hydrogen, ethylene, etc., and are amounts paid to the enterprises that produce and supply carbon dioxide, hydrogen, ethylene, etc. When enterprises use each other's services, the cost calculation means 2443 can also calculate the costs by offsetting them, including other services, when making payments.
Even if a carbon credit system is introduced, the cost calculation means 2443 can automatically calculate the cost by automatically taking into account the credit fee. The calculation can also take into account the buying and selling of carbon dioxide credits between industrial complex enterprises, and although the calculation of the mutual transfer fee becomes very complicated when at least one of carbon dioxide and green electrolytic hydrogen is used as the raw material, the carbon recycle industrial complex operation system according to this embodiment can automatically calculate and output such a calculation.
Therefore, according to the carbon recycling complex operation system of this embodiment, it is possible to perform accurate and labor-saving fee calculations, reduce the actual exchange of cash, and simplify procedures.
Furthermore, if the server 20 has the means to directly contact the bank regarding the expense information, the procedure can be further simplified by automatically transferring the funds to a bank account.

The cost calculation means 2443 preferably calculates, for example, the transaction prices of carbon dioxide and hydrogen. Therefore, the carbon dioxide receiving company is charged a cost calculated by multiplying the accumulated amount of carbon dioxide received from the carbon dioxide common pipe 100 and used by the price of carbon dioxide per unit amount, and the hydrogen receiving company is charged a cost calculated by multiplying the accumulated amount of hydrogen received from the hydrogen common pipe 200 and used by the price of hydrogen per unit amount.
In addition, it is also preferable that the cost calculation means 2443 has a calculation function for, for example, when carbon recycling is carried out to produce a carbon recycled product, allowing each consumer corporate entity to calculate the green hydrogen ratio and carbon dioxide consumption ratio in the carbon recycled product and use this as advertising or credit when selling the carbon recycled product.

The carbon dioxide production cost calculation means 2444 calculates the production cost of the carbon dioxide supplied by the carbon dioxide supplying company to the carbon dioxide common pipe 100. It is preferable that the carbon dioxide production cost calculation means 2444 is available (placed in an accessible state) only to the carbon dioxide supplying company.
For example, companies A and B input supply information (accumulated carbon dioxide supply data) of carbon dioxide supplied from carbon dioxide supply devices 300A and 300B to the common carbon dioxide pipe 100 and unit prices of utilities necessary for carbon dioxide production into terminals 10A and 10B, respectively, and the carbon dioxide production cost calculation means 2444 calculates the carbon dioxide production costs for each of companies A and B. The information input by company A is not disclosed to other companies, and the information input by company B is not disclosed to other companies. The accumulated carbon dioxide supply data includes, for example, the flow rate, temperature, and pressure for converting gaseous carbon dioxide to a standard condition of 15°C.

The hydrogen production cost calculation means 2445 calculates the production cost of hydrogen supplied by the hydrogen supply company to the common hydrogen pipe 200. It is preferable that the hydrogen production cost calculation means 2445 is available (placed in an accessible state) only to the hydrogen supply company.
For example, companies A, B, and G input supply information (accumulated hydrogen supply data) of hydrogen supplied from hydrogen supply devices 500A, 500B, and 500G to common hydrogen pipe 200 and unit prices of utilities necessary for hydrogen production into terminals 10A, 10B, and 10G, respectively, and hydrogen production cost calculation means 2445 calculates the hydrogen production cost for each of companies A, B, and G. The information input by company A is not disclosed to other companies, the information input by company B is not disclosed to other companies, and the information input by company G is not disclosed to other companies. The accumulated hydrogen supply data includes, for example, the flow rate, temperature, and pressure for converting gaseous hydrogen to a standard condition of 15° C.

For example, in the case of carbon dioxide recovery, the manufacturing cost information includes utilities (each company's electricity cost, low-temperature exhaust heat price, power cost, compressor cost that sends carbon dioxide into the common piping), auxiliary materials (solvent cost for carbon dioxide recovery, solvent degradation inhibitor), maintenance costs, labor costs, etc.
In the case of electrolytic hydrogen production, the production cost information includes, for example, utilities (unit price of green electricity, electrolytic solution, cost of compressor that sends hydrogen to the piping, etc.), maintenance costs, labor costs, and equipment depreciation costs.

The carbon free rate calculation means 2446 is a means for calculating the carbon free rate in the carbon recycled product.
The carbon-free rate calculation means 2446 calculates the ratio of conventional methanol and green methanol in methanol when methanol is exported from the methanol import/export terminal 920C. The carbon-free rate calculation means 2446 can also display the calculation result on the display means 21. The carbon-free rate calculation means 2446 calculates the ratio of green methanol when methanol is shipped domestically from the methanol import/export terminal 920C by land or sea, in the same way as when it is exported.

In addition, the carbon-free rate calculation means 2446 calculates the composition, etc. of the carbon-free hydrogen supplied from corporate entity G from the supply information stored in the supply information storage means 234 as follows.
When the hydrogen import terminal 560G receives three types of liquid hydrogen in the same tank for each lot, the hydrogen supply device 500G of the enterprise G has the configuration shown in FIG. 4(A).
When liquid brown hydrogen is received at the hydrogen import terminal 560G and supplied to the receiving tank 561G of the hydrogen import terminal 560G, the composition _{K WX} [mass %] of the liquid brown hydrogen, the composition _{B WX} [mass %] of the liquid blue hydrogen, and the composition _{G WX} [mass %] of the liquid green hydrogen in the receiving tank 561G are calculated according to the following formulas (Equation 1) to (Equation 3).

_{K W ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
B W ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
G W ​ ​ ​ ​ ​ ​ ​ ​ ​ ​}

The symbols in the formulas are explained as follows:
_K W ₁ : Mass [kg] of liquid Brownian hydrogen imported and supplied to the receiving tank 561G
_K W ₀ : The mass [kg] of liquid brown hydrogen stored in the receiving tank 561G before supplying the above-mentioned imported liquid brown hydrogen.
_B W ₀ : The mass [kg] of liquid brown hydrogen previously stored in the receiving tank 561G before supplying the above-mentioned imported liquid brown hydrogen
_G W ₀ : Mass [kg] of liquid green hydrogen previously stored in the receiving tank 561G before supplying the above-mentioned imported liquid brown hydrogen

In addition, when liquid blue hydrogen is received at the hydrogen import terminal 560G, _and when liquid green hydrogen is received, _the compositions _KWX , _BWX , and _GWX of the carbon-free hydrogen supplied to the second supply port _520G are calculated in the same manner as in the case of liquid brown hydrogen.

The mixed liquid hydrogen in the receiving tank 561G and the hydrogen at the outlet of the vaporizer 563G are gaseous, but the hydrogen mass ratio is the same as that in the liquid hydrogen receiving tank 561G when converted to standard conditions (15°C).

When the green hydrogen produced by the green hydrogen production apparatus 550G and the mixed liquid hydrogen in the receiving tank 561G are supplied to the second supply port 520G, the brown hydrogen composition _K V _X [volume %], blue hydrogen composition _B V _X [volume %], and green hydrogen composition _G V _X [volume %] in the supplied carbon-free hydrogen are calculated according to the following formulas (4) to (6).

_{G V ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
B V ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
KV ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​}

The symbols in the formulas are explained as follows:
_G V ₁ ′: the volume [m ³ ] of the green hydrogen produced in the green hydrogen production apparatus 550G and supplied to the second supply port 520G
_G V ₀ : The volume [m ³ ] of imported green hydrogen that was stored in advance in the receiving tank 561G and supplied to the second supply port 520G
_B V ₀ : The volume [m ³ ] of imported blue hydrogen that was stored in advance in the receiving tank 561G and supplied to the second supply port 520G
_K V ₀ : The volume [m ³ ] of imported brown hydrogen that was stored in advance in the receiving tank 561G and supplied to the second supply port 520G
_K V ₁ : The volume [m ³ ] of imported brown hydrogen additionally supplied into the receiving tank 561G and supplied to the second supply port 520G

In addition, when liquid blue hydrogen is received at the hydrogen import terminal 560G, and when liquid green hydrogen is received, the compositions _{K VX} , _{B VX} , and _{G VX} of the carbon-free hydrogen supplied to the second supply port 520G are calculated in the same manner as in the case of liquid brown hydrogen.

When methylcyclohexane (sometimes abbreviated as MCH) is received as a carrier in a receiving tank 564G at a hydrogen import terminal 560G, a hydrogen supply device 500G of the enterprise G has a configuration shown in FIG. 4(B).
When an MCH that holds brown hydrogen (MCH-K that holds brown hydrogen) is received at the hydrogen import terminal 560G and the MCH-K that holds brown hydrogen is supplied to a receiving tank 564G possessed by the hydrogen import terminal 560G, the composition _K M _X [mass %] of the MCH-K that holds brown hydrogen, the composition _B M _X [mass %] of the MCH that holds blue hydrogen (MCH-B that holds blue hydrogen), and the composition _G M _X [mass %] of the MCH that holds green hydrogen (MCH-G that holds green hydrogen) in the receiving tank 564G are calculated according to the following formulas (7) to (9).

_{KM ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
B M ​ ​ ​ ​ ​ ​ ​ ​ ​ ​
G M ​ ​ ​ ​ ​ ​ ​ ​ ​ ​}

The symbols in the formulas are explained as follows:
_K M ₁ : Mass [kg] of Brown hydrogen-holding MCH-K imported and supplied to the receiving tank 564G
_K M ₀ : the mass [kg] of the Brown hydrogen-retaining MCH-K that was stored in the receiving tank 564G before the above-mentioned imported Brown hydrogen-retaining MCH-K was supplied
_B M ₀ : Mass [kg] of blue hydrogen-holding MCH-B stored in the receiving tank 564G before supplying the imported brown hydrogen-holding MCH-K described above.
_G M ₀ : Mass [kg] of the green hydrogen-holding MCH-G that was stored in the receiving tank 564G before supplying the above-mentioned imported brown hydrogen-holding MCH-K

In the above formulas (7) to (9), the Brownian hydrogen retention MCH-K may be replaced with volume instead of mass to calculate the composition of each of the three types of carbon-free hydrogen.

In addition, when hydrogen import terminal 560G receives MCH-B holding blue hydrogen, and when it receives MCH-G holding green hydrogen, the calculation is the same as for liquid brown hydrogen.

The mixed hydrogen holding MCH in the receiving tank 564G has a gaseous composition of hydrogen at the outlet of the hydrogen desorption device 566G, but the hydrogen mass ratio is the same as that in the receiving tank 564G of the MCH when converted to standard conditions (15°C). In addition, toluene (sometimes abbreviated as TL) refined after hydrogen desorption is returned to the importer.

When the green hydrogen produced by the green hydrogen production apparatus 550G and the mixed hydrogen held MCH in the receiving tank 564G are supplied to the second supply port 520G, the brown hydrogen composition _K V _X [vol %], blue hydrogen composition _B V _X [vol %], and green hydrogen composition _G V _X [vol %] in the supplied carbon-free hydrogen are calculated in the same manner as in the above formulas (4) to (6).

The carbon recycling rate calculation means 2447 calculates the mass ratio of carbon dioxide in the carbon recycled products produced by the carbon recycling devices 700C and 700F using the recovered carbon dioxide.

The power steam balance optimization means 245 aims to effectively utilize the exhaust heat in the exhaust heat utilization means 800 described below.

Server transmission means 27 transmits carbon dioxide supply control information to carbon dioxide supply control means 330A, 330B, and transmits hydrogen supply control information to hydrogen supply control means 530A, 530B, 530G.
The server transmitting means 27 also transmits the carbon dioxide supply control information to the carbon dioxide recovery units 310A and 310B, and also transmits the hydrogen supply control information to the hydrogen recovery units 510A, 510B and 510G.

The server 20 is preferably a so-called cloud-type server, since it is inexpensive and safe against cyber attacks. This cloud-type server preferably stores data on the complex's carbon recycling management information, accounting algorithms, and optimal control algorithms.

(Waste heat utilization means)
The carbon recycle complex operation system according to this embodiment has exhaust heat utilization means 800 for recovering and consolidating exhaust heat generated by a plurality of enterprises that are not carbon dioxide supply enterprises and exhaust heat generated within the carbon dioxide supply enterprises, and supplying the exhaust heat to the carbon dioxide recovery devices 310A, 310B. The exhaust heat utilization means 800 is preferably installed in at least one of the enterprises A to G, and more preferably installed in all of the enterprises A to G. The exhaust heat recovered and consolidated by the exhaust heat utilization means 800 is preferably used as a carbon dioxide recovery heat source by the carbon dioxide recovery devices 310A, 310B.
The waste heat generated by a plurality of companies that are not carbon dioxide supplying companies is, for example, waste heat generated by at least one of companies C, D, E, F, and G that are not carbon dioxide supplying companies. The waste heat generated within a carbon dioxide supplying company is, for example, waste heat generated by at least one of companies A and B that are carbon dioxide supplying companies.
By collecting and consolidating the waste heat generated by each company in such a carbon recycling complex and using it effectively as a carbon dioxide recovery heat source, the electricity-steam balance of the complex is improved and heat loss is reduced. As a result, for example, boiler fuel (the amount of the most expensive fuel used as boiler fuel within the company, or the amount of coal used) is reduced, and carbon dioxide emissions are also reduced.
Therefore, it is more preferable that the carbon recycle complex operation system of this embodiment incorporates low-temperature waste heat and medium-temperature waste heat into the complex's heat recovery system in order to optimize the power and steam balance of the entire carbon recycle complex in real time.

The exhaust heat utilization means 800 recovers and aggregates exhaust heat in at least one of the following temperature ranges: low-temperature exhaust heat (e.g., exhaust heat of about 120°C to about 130°C) and medium-temperature exhaust heat (e.g., exhaust heat of about 270°C to about 500°C). Low-temperature exhaust heat is, for example, low-temperature low-pressure steam or low-temperature flue exhaust heat.

It is also preferable that the exhaust heat utilization means 800 recovers at least one of the exhaust heat generated by the carbon recycling devices 700C, 700D, 700E, and 700F.

If the low-temperature exhaust heat generated in the carbon recycling complex of this embodiment is recovered and collected as low-temperature, low-pressure steam by exhaust heat utilization means 800, it is possible to recover large amounts of exhaust heat widely and efficiently from more companies that generate low-temperature exhaust heat and use it as a heat source for carbon dioxide recovery devices 310A, 310B, compared to the case where carbon dioxide supplying companies collect and collect the exhaust heat individually (stand-alone).
For example, when using a carbon dioxide capture device that desorbs carbon dioxide from a solution that has captured carbon dioxide, not only the low-temperature exhaust heat generated by the business entity that owns the device but also low-temperature exhaust heat from nearby areas can be recovered and consolidated by the exhaust heat utilization means 800, thereby reducing the cost of capturing carbon dioxide and reducing carbon dioxide emissions through energy savings.

In addition, by recovering and consolidating the medium-temperature exhaust heat (e.g., exhaust heat generated during methanation) generated in the carbon recycling complex according to this embodiment as by-product medium-temperature and medium-pressure steam using the exhaust heat utilization means 800, it is possible to recover large amounts of exhaust heat efficiently and widely from many more companies, just as in the case of low-temperature exhaust heat, and use it as a heat source for the carbon dioxide recovery devices 310A and 310B.

In the carbon dioxide recovery units 310A and 310B, the heat source for desorbing carbon dioxide from the solution that absorbed carbon dioxide is mainly supplied from the low-temperature, low-pressure steam header and the by-product medium-temperature, medium-pressure steam header. In some cases, high-temperature, high-pressure steam must be injected from the high-temperature, high-pressure steam header to adjust the temperature to a level suitable for carbon dioxide recovery.
For this purpose, a mixing holder is installed before the reboilers (heat exchangers for carbon dioxide desorption) of the carbon dioxide capture units 310A and 310B. Thermometers, flow meters, and flow control valves are installed on the branch pipes that branch off from the low-temperature low-pressure, medium-temperature medium-pressure, and high-temperature high-pressure steam headers and connect to the reboilers of the carbon dioxide capture units 310A and 310B.
The system for real-time control of steam temperature in the mixing holder enables the amount of low-temperature and low-pressure steam, medium-temperature and medium-pressure steam, and high-temperature and high-pressure steam to be controlled in real time via an algorithm through the opening of the control valve within the overall management system of the petrochemical complex or within each company that recovers carbon dioxide.

In this way, by collecting the medium-temperature, medium-pressure steam generated in the carbon recycling device and the low-temperature, low-pressure steam generated by each business entity through pipes and using them to capture carbon dioxide, the power steam balance of each business entity (the business entity that captures carbon dioxide and the business entity that has had surplus low-temperature, low-pressure steam captured) can be optimized and improved, and energy savings can also be achieved.
From the viewpoint of further optimizing the use of exhaust heat, it is preferable that the control means 24 of the server 20 has an electric power steam balance optimization means 245 (optimization algorithm), and it is also preferable that such a server 20 and the exhaust heat utilization means 800 are connected via an information network NW. In this case, the electric power steam balance optimization means 245 aggregates information on the exhaust heat generated by each business entity in real time, and controls the steam recovered and aggregated by the exhaust heat utilization means 800 to be supplied to the carbon dioxide capture devices 310A, 310B according to the operation schedule and operation status of the carbon dioxide capture devices 310A, 310B. For example, the electric power steam balance optimization means 245 collects and accumulates the amount of exhaust heat collected from neighboring companies in real time.
In this case, the power steam balance optimization means 245 first calculates the required amount of heat recovery in real time according to the amount of carbon dioxide recovery required by the carbon dioxide recovery devices 310A, 310B. Next, the power steam balance optimization means 245 requests each enterprise to provide the amount of low-temperature exhaust heat (amount of low-temperature, low-pressure steam) to be recovered and supplied to the exhaust heat utilization means 800. After each enterprise supplies the amount of low-temperature exhaust heat (low-temperature, low-pressure steam) to the exhaust heat utilization means 800, the enterprise performs optimized load operation of utility equipment (boilers, generators, etc.) in real time using the power steam balance optimization system unique to each enterprise.
To perform this series of controls in real time, each of the carbon dioxide capture devices 310A, 310B calculates the amount of heat required for carbon dioxide desorption and transmits it to the server 20, and the control means 24 requests each business entity for the amount of low-temperature, low-pressure steam to be supplied to the exhaust heat utilization means 800. The amount of heat required for carbon dioxide desorption is the amount of low-temperature, low-pressure steam from the exhaust heat utilization means 800, and the amount of low-temperature, low-pressure steam, the amount of medium-temperature, medium-pressure steam, and the amount of high-temperature, high-pressure steam for adjusting the amount of heat from each of the carbon dioxide capture devices 310A, 310B.

(Carbon recycling complex operation method)
An operation method using the carbon recycle complex operation system according to this embodiment will be described below.

(Optimal reserve amount calculation process)
The enterprises C, D, E, and F that carry out carbon recycling input at least any of planned usage information of the planned amount and planned pressure of carbon dioxide and hydrogen to be used for carbon recycling, via the input means 12 of each of the terminals 10C, 10D, 10E, and 10F. The planned amount and planned pressure of use via the input means 12 may be input by an operator or the like periodically (e.g., daily or weekly) using the input means 12, or the planned amount and planned pressure of use calculated by a production planning system may be automatically input into the input means 12.
Next, the terminal transmission means 141 of each of the terminals 10C, 10D, 10E, 10F transmits the input planned use information to the server 20 via the information network NW. Since the corporate entity C uses ethylene in carbon recycling, the corporate entity C also inputs the planned amount and planned pressure of ethylene to the input means 12 of the terminal 10C as planned use information. Then, the terminal transmission means 141 transmits the planned ethylene use information to the server 20.
The writing means 241 of the server 20 stores the use schedule information transmitted by the terminal transmission means 141 in the use schedule information storage means 233 of the storage means 23 .

In addition, the carbon dioxide acceptance control means 430C, 430D, 430E of the corporations C, D, E, which are carbon dioxide accepting corporations, each transmits acceptance information of the carbon dioxide accepted and used from the carbon dioxide common piping 100 to each terminal 10C, 10D, 10E, and the terminal transmission means 141 transmits the carbon dioxide acceptance information to the server 20.
In addition, the hydrogen receiving control means 630C, 630F of the companies C, F, which are hydrogen receiving companies, each transmit information about the hydrogen received and used from the common hydrogen piping 200 to each terminal 10C, 10F, and the terminal transmission means 141 transmits the hydrogen receiving information to the server 20.
The receiving information (receiving amount and receiving pressure) is automatically input by the input means 12 in real time from the first receiving flow meter 434, the second receiving flow meter 634, the first receiving pressure meter 433 and the second receiving pressure meter 633.
The writing means 241 of the server 20 stores the acceptance information transmitted by the terminal transmission means 141 in the acceptance information storage means 232 of the storage means 23 .

The notification means 242 of the server 20 notifies at least one of the carbon dioxide supplying companies and the hydrogen supplying companies of the information stored in the storage means 23. Specifically, the notification means 242 transmits the information stored in the receiving information storage means 232 and the usage schedule information storage means 233 in response to a request from each of the terminals 10A to 10G.

As a result, the carbon recycling complex management system of this embodiment calculates the required amounts of carbon dioxide, hydrogen, and ethylene for the entire complex from the amounts and pressures of carbon dioxide, hydrogen, and ethylene received by each corporate entity, as well as the planned amounts and pressures of use, and manages the entire system in real time so that the required amounts can be supplied from the supply equipment.
At this time, when a command is given in the server 20 or in each of the terminals 10A-10G to calculate the optimal amount of carbon dioxide and hydrogen to be secured for the entire complex, the calculation means 244 of the server 20 calculates the optimal amount of carbon dioxide and hydrogen to be secured based on the amounts and pressures of carbon dioxide and hydrogen received by the enterprises A-G and the future planned amounts and pressures of carbon dioxide and hydrogen to be used, which are stored respectively in the reception information storage means 232 and the usage plan information storage means 233. In other words, the server 20 calculates the optimal amounts of carbon dioxide and hydrogen to be secured so as to produce the maximum effect at the minimum cost for the entire complex. The server transmission means 27 of the server 20 transmits information regarding the optimal amount of carbon dioxide to be secured to the carbon dioxide supplying enterprise, and transmits information regarding the optimal amount of hydrogen to be secured to the hydrogen supplying enterprise.
Therefore, corporations A and B that own carbon dioxide supplying equipment make a production plan for carbon dioxide recovery so as to ensure the optimum amount of carbon dioxide required, and operate the carbon dioxide supplying equipment according to that plan. Carbon dioxide produced by the operation of the carbon dioxide supplying equipment is supplied to corporations C, D, and E through a common carbon dioxide pipe 100. For example, if the carbon dioxide supplying equipment of one of corporations A and B is stopped due to a problem or maintenance, the amount of carbon dioxide supplied by the carbon dioxide supplying equipment of the other corporation is increased.
Furthermore, the corporations A, B, and G that own the hydrogen supply devices make production plans for hydrogen recovery so as to ensure the optimum amount of hydrogen required, and operate the hydrogen supply devices according to the plans. The hydrogen produced by the operation of the hydrogen supply devices is supplied to corporations C and F through common hydrogen piping 200. For example, if the hydrogen supply device of one of the corporations A, B, and G is stopped due to a problem or maintenance, the amount of hydrogen supplied by the hydrogen supply device of the other corporation is increased.
In this way, on each of terminals 10A to 10G, corporate entities C to F can input their own amounts of carbon dioxide and hydrogen usage and planned future amounts of carbon dioxide and hydrogen usage, and can also check the amounts of carbon dioxide and hydrogen usage (including direct and indirect converted amounts of carbon dioxide and hydrogen usage) already used by corporate entities C to F and the planned future amounts of carbon dioxide and hydrogen usage (including direct and indirect converted amounts of carbon dioxide and hydrogen usage).As a result, corporate entities A, B, and G, which own at least one of a carbon dioxide recovery device and a hydrogen recovery device, can grasp the amount of carbon dioxide and hydrogen supply required for the entire complex, and can thereby make production plans for the amounts of carbon dioxide and hydrogen recovered.
Furthermore, the calculation means 244 of the server 20 can automatically calculate the optimal amounts of carbon dioxide and hydrogen to be secured based on the amounts of carbon dioxide and hydrogen received and the planned amounts to be used by all of the enterprises C to F, and can easily and quickly determine these optimal amounts to be secured. Even if the supply of carbon dioxide and hydrogen falls below the demand, the calculation means 244 determines the operation data information of the plants of each of the enterprises A to G via the information network NW, and determines which of the enterprises' plants should provide an amount of at least one of carbon dioxide and hydrogen that is optimal for the entire industrial complex.

(Supply control process)
The hydrogen receiving control means 630C, 630F constantly transmit the pressure detected by the second receiving pressure meter 633 and the flow rate detected by the second receiving flow meter 634 to the hydrogen recovery devices 510A, 510B, 510G. In this embodiment, the hydrogen receiving control means 630C, 630F constantly transmits hydrogen receiving information to the hydrogen recovery devices 510A, 510B, 510G via the terminals 10C, 10F and the server 20, respectively.
Based on the receiving information, calculation means 244 of server 20 generates carbon dioxide supply control information for controlling the supply of carbon dioxide by carbon dioxide supply control means 330A, 330B, and hydrogen supply control information for controlling the supply of hydrogen by hydrogen supply control means 530A, 530B, 530G. Server transmission means 27 transmits the carbon dioxide supply control information to terminals 10A, 10B of enterprises A and B, and transmits hydrogen supply control information to terminals 10A, 10B, 10G of enterprises A, B, and G.

The carbon dioxide capture devices 310A, 310B constantly control the operation states of the carbon dioxide capture devices 310A, 310B based on the carbon dioxide supply control information transmitted from the server transmission means 27. In addition, the carbon dioxide capture devices 310A, 310B may constantly control the operation states of the carbon dioxide capture devices 310A, 310B based on the use schedule information notified by the notification means 242.
Based on the carbon dioxide supply control information, the carbon dioxide supply control means controls the carbon dioxide supplied to the carbon dioxide common pipe 100. Specifically, the carbon dioxide supply control means 330A, 330B control the air supply pressure of the carbon dioxide compressor 331 so as to maintain the pressure in the carbon dioxide common pipe 100 constant based on the carbon dioxide supply control information received via the terminals 10A, 10B.
Alternatively, the carbon dioxide capture devices 310A, 310B control the operating state of the carbon dioxide capture devices 310A, 310B so as to maintain the pressure in the carbon dioxide common pipe 100 constant, based on the carbon dioxide supply control information received via the terminals 10A, 10B.

The hydrogen recovery devices 510A, 510B, 510G constantly control the operation state of the hydrogen recovery devices 510A, 510B, 510G based on the hydrogen supply control information transmitted from the server transmission means 27. For example, the hydrogen recovery devices 510A, 510B, 510G control the operation state (e.g., vary the operation amount) so as to maintain a constant pressure in the hydrogen common pipe 200 based on the hydrogen supply control information. By controlling the operation state in this way, large disturbances in the amount of hydrogen used can be absorbed. The hydrogen recovery devices 510A, 510B, 510G may also constantly control the operation state of the hydrogen recovery devices 510A, 510B, 510G based on the usage schedule information notified by the notification means 242.
Based on the hydrogen supply control information, the hydrogen supply control means controls the hydrogen supplied to the common hydrogen pipe 200. Specifically, the hydrogen supply control means 530A, 530B, 530G constantly control the air supply pressure of the hydrogen compressor 531 so as to maintain the pressure in the common hydrogen pipe 200 constant based on the hydrogen supply control information received via the terminals 10A, 10B, 10G.

In real-time management, the carbon dioxide compressors 331 of enterprises A and B are constantly controlled to the consumption pressure requested by each carbon dioxide receiving enterprise or the agreed minimum pressure of each carbon dioxide receiving enterprise, and the hydrogen compressors 531 of enterprises A, B, and G are constantly controlled to the consumption pressure requested by each hydrocarbon receiving enterprise or the agreed minimum pressure of each hydrogen receiving enterprise.
The valve control unit 26 of the server 20 controls the opening degree of the first supply valve 332 of the companies A and B and the second supply valve 532 of the companies A, B, and G based on the carbon dioxide supply control information and hydrogen supply control information generated by the calculation means 244, and sets the pumping pressure of the carbon dioxide supply devices 300A, 300B and the hydrogen supply devices 500A, 500B, 500G to the minimum required pressure of the common piping.
In other words, according to the system of this embodiment, the pumping pressure of carbon dioxide supplying devices 300A, 300B and hydrogen supplying devices 500A, 500B, 500G does not need to be set to match the company requiring the maximum pressure (carbon dioxide receiving company or hydrogen receiving company). By narrowing the opening of first receiving valve 432 and second receiving valve 632 of the other companies, it is possible to increase the pressure to the company requiring the maximum pressure without changing the pumping pressure.

(Cost calculation process)
The carbon dioxide receiving devices 400C, 400D, 400E transmit the amount of carbon dioxide received and used from the carbon dioxide common piping 100 to the server 20 as receiving information, and the hydrogen receiving devices 600C, 600F transmit the amount of hydrogen received and used from the hydrogen common piping 200 to the server 20 as receiving information. The storage means 23 stores the amount of carbon dioxide and the amount of hydrogen used, and the cost calculation means 2443 calculates costs based on the amount of carbon dioxide and the amount of hydrogen used.
The input means 12 inputs production cost information used to calculate the production cost of carbon dioxide supplied by the companies A and B as carbon dioxide supplying companies to the carbon dioxide common pipe 100, and information used to calculate the production cost of hydrogen supplied by the companies A, B and G as hydrogen supplying companies to the hydrogen common pipe 200. The terminal transmission means 141 transmits the production cost information to the server 20.
The cost calculation means 2443 calculates the cost of carbon dioxide used by the carbon dioxide receiving company based on the amount of carbon dioxide used (reception information) and the production cost of carbon dioxide (production cost information), and calculates the cost of hydrogen used by the hydrogen receiving company based on the amount of hydrogen used (reception information) and the production cost of hydrogen (production cost information).

The calculation means 244 of the server 20 automatically calculates the expenses incurred by the use of carbon dioxide, hydrogen, exhaust heat, etc., as well as the actual carbon dioxide reduction amount, carbon credit calculation, mutual transfer calculation, etc. When billing for expenses, if the business entities use carbon dioxide, hydrogen, exhaust heat, etc. from each other, the calculation means 244 offsets the expenses when calculating. Furthermore, if the business entities use other services in addition to these expenses, the server 20 offsets the expenses when calculating. By offsetting the expenses in this way and calculating, the actual exchange of cash between the business entities is reduced, and the procedures can be simplified. The server transmission means 27 may have a means for directly contacting the bank regarding the expense information, and the procedures can be further simplified by automatically transferring the information to a bank account.

The server 20 constantly distributes the real-time control of the pressure and flow rate of the carbon dioxide common pipe 100 and the hydrogen common pipe 200 and the accounting results to the terminals 10A-10G of the business entities A-G, and displays them on the display means 11 of the terminals 10A-10G.

(Carbon-free rate calculation process)
The terminal transmission means 141 of the terminal 10G of corporate entity G transmits to the server 20 the produced green hydrogen supply information (produced green hydrogen supply amount and supply pressure) of the produced green hydrogen supplied to the hydrogen common pipe 200 and the imported carbon-free hydrogen supply information (imported carbon-free hydrogen supply amount and supply pressure) of the imported carbon-free hydrogen supplied to the hydrogen common pipe 200. The storage means 23 of the server 20 stores the produced green hydrogen supply information and the imported carbon-free hydrogen supply information. Specifically, the supply information storage means 234 stores the produced green hydrogen supply information and the imported carbon-free hydrogen supply information. The notification means 242 notifies the multiple corporate entities that make up the industrial complex of the produced green hydrogen supply information and the imported carbon-free hydrogen supply information stored in the storage means 23.

In addition, when a mixed fuel containing 20% by mass of biofuel (renewable) such as coconut shell or forest waste is used as fuel for the coal boiler 901B of the enterprise B, 20% of the electricity generated by the steam corresponds to green electricity. Hydrogen produced using green electricity also corresponds to green hydrogen (produced green hydrogen). When electricity is generated by mixing biofuel (renewable fuel) with coal, the calorific value ratio of the renewable fuel is converted into green hydrogen, so when such green hydrogen is received, it is also taken into account as the ratio of green hydrogen in the carbon recycling product. Of the hydrogen produced using 20% by mass of biofuel (renewable fuel), 20% by mass is green hydrogen. The ratio of biofuel (renewable fuel) in the fuel used in the coal boiler is not limited to 20% by mass.
The terminal transmitting means 141 of the terminal 10B of corporate entity B, like the terminal 10G, also transmits to the server 20 produced green hydrogen supply information (produced green hydrogen supply amount and supply pressure) of the produced green hydrogen supplied to the hydrogen common pipe 200.

The hydrogen receiving devices 600C, 600F respectively detect the total amount of carbon-free hydrogen, including at least one of the amount of produced green hydrogen and the amount of imported carbon-free hydrogen, received from the common hydrogen piping 200 and supplied to the carbon recycle devices 700C, 700F, using the hydrogen receiving control means 630C, 630F, and transmit the total amount of carbon-free hydrogen to the server 20. The storage means 23 of the server 20 stores the total amount of carbon-free hydrogen. Specifically, the receiving information storage means 232 stores the total amount of carbon-free hydrogen. The calculation means 244 (specifically, the carbon-free rate calculation means 2446) calculates the mass ratio of the total amount of carbon-free hydrogen in the carbon recycled product obtained by recycling carbon dioxide in the carbon recycle devices 700C, 700F.

(Carbon recycling rate calculation process)
The calculation means 244 (specifically, the carbon recycling rate calculation means 2447) calculates the mass ratio of the amount of carbon dioxide in the carbon recycled products produced in the carbon recycling devices 700C, 700F using the recovered carbon dioxide.
The carbon dioxide receiving devices 400C, 400D, 400E have the carbon dioxide receiving control means 430C, 430D, 430E detect the amount of carbon dioxide received from the carbon dioxide common piping 100 and supplied to the carbon recycle device, and transmit the amount of carbon dioxide to the server 20. The storage means 23 stores the amount of carbon dioxide. Specifically, the reception information storage means 232 stores the amount of carbon dioxide.

The carbon recycling rate calculation means 2447 calculates the mass ratio of the amount of carbon dioxide in the carbon recycled product based on the amount of carbon dioxide stored in the receipt information storage means 232 (the amount of carbon dioxide supplied to the carbon recycling device) and the amount of carbon recycled product produced by the carbon recycling device that received the carbon dioxide supply.

The calculation of the mass ratio of carbon-free hydrogen and the mass ratio of carbon dioxide in the carbon recycled product by the carbon-free rate calculation means 2446 and the carbon recycling rate calculation means 2447 is performed, for example, as follows. A method for calculating the mass ratio of green hydrogen and the mass ratio of carbon dioxide in the carbon recycled product, for example, in methanol produced by a carbon recycling device, is as follows. The direct synthesis reaction formula of methanol is as follows.
CO ₂ + 3H ₂ → CH ₃ OH + H ₂ O
In the above reaction formula, " _3H2 " on the left side corresponds to the amount of green hydrogen accepted, " _CO2 " on the left side corresponds to the amount of carbon dioxide accepted, the four H in the methanol " _CH3OH " on the right side corresponds to the amount of green hydrogen, and the one C in the methanol " _CH3OH " on the right side corresponds to the amount of carbon dioxide. In this way, the amount of green hydrogen and the amount of carbon dioxide in methanol as a carbon recycling product are specified, and the mass ratio of the amount of green hydrogen and the mass ratio of carbon dioxide in methanol are calculated. However, these are theoretical calculation values, and the ratios are calculated from an empirical formula including the amount of loss and the amount of unreacted based on the theoretical formula.

(Business information disclosure process)
The disclosure means 243 of the server 20 discloses the business information (e.g., prices of carbon dioxide, hydrogen, low-temperature exhaust heat, and carbon credits) stored in the business information storage means 235 to the terminals 10A-10G. Each consumer (carbon dioxide receiving company and hydrogen receiving company) makes a production plan for the production volume of various carbon recycled products based on this business information. Then, when each consumer inputs the production plan from each of the terminals 10A-10G, the supply side (carbon dioxide supplying company and hydrogen supplying company) makes a production plan for carbon dioxide recovery and hydrogen recovery while checking the production plan of each consumer.

(Control process for waste heat utilization)
The server 20 also collectively manages the exhaust heat (low-temperature exhaust heat, methanation recovery heat, etc.) recovered and aggregated by the exhaust heat utilization means 800. The server 20 calculates the exhaust heat recovered and aggregated from each company. Each company calculates using its own optimal power-steam system and presents optimal operation guidelines.

(Effects of this embodiment)
The carbon recycle complex operation system according to this embodiment recovers a large amount of carbon dioxide generated in the complex, and allows the production volume of carbon recycled products, in addition to the recovered amounts of carbon dioxide and hydrogen, planned amounts for use, and received amounts, as well as the consumption amounts of ethylene and related utilities, to be shared among corporate entities, and can be centrally controlled and managed in real time.
In addition, the carbon recycling complex operation system according to this embodiment can share and effectively utilize carbon recycling products such as carbon dioxide, hydrogen, ethylene, exhaust heat, existing equipment (e.g., supply equipment, etc.), utilities, and methanol.
As a result, the carbon recycling industrial complex operation system according to this embodiment can simultaneously achieve reduced running costs related to carbon recycling, reduced inventory, reduced new investments, reduced maintenance costs, and labor savings. Moreover, it is possible to increase the size of the manufacturing equipment (carbon recycling equipment) for carbon recycled products such as methanol, and the utility supply equipment, storage tanks, and loading/unloading equipment can be effectively shared, thereby suppressing new investments and maintenance costs, and realizing cost reductions for the entire industrial complex.
Furthermore, if the carbon recycle complex operation system according to this embodiment is not provided, the carbon dioxide capture equipment must be operated at a higher capacity at all times, and the compressor must be operated at the maximum pressure required by the requesting company to constantly set the carbon dioxide and hydrogen supply pressure.

In the carbon recycle complex operation system according to this embodiment, the server 20 can control the opening of the supply valves of each supply control means and the receiving valves of each receiving control means based on signals from the receiving flow meters of the carbon dioxide receiving control means 430C, 430D, 430E and the hydrogen receiving control means 630C, 630F. This allows the recovery amount and pumping pressure of the carbon dioxide supply devices 300A, 300B and the recovery amount and pumping pressure of the hydrogen supply devices 500A, 500B, 500G to be set to the minimum required as raw material for the carbon recycled finished product volume of each business entity, and energy saving effects can also be expected.

The carbon recycle complex operation system according to this embodiment can automatically calculate the costs incurred by the use of carbon dioxide, hydrogen, etc., and reduce the workload of billing and other operations.
Furthermore, even if a carbon credit system is introduced, the carbon recycle complex management system of this embodiment can automatically take credit fees into account in its calculations, as described above, thereby enabling accurate fee calculations while saving labor.

The carbon recycling complex operation system of this embodiment recovers surplus low-temperature, low-pressure steam at the complex and can effectively utilize the low-temperature, low-pressure steam as the heat required to recover carbon dioxide, making it possible to effectively utilize surplus heat, particularly in the summer, and in some cases, making it possible to effectively utilize medium-temperature, medium-pressure steam that is difficult to use. Increasing the number of uses for such low-temperature, medium-temperature waste heat improves the electricity-steam balance at each business location and increases the utility efficiency of the entire enterprise.

Second Embodiment
A second embodiment of the present invention will now be described.
The carbon recycle complex operation system according to this embodiment differs from the first embodiment in that, in addition to the carbon recycle complex operation system according to the first embodiment, the carbon recycle complex operation system further includes at least one of a configuration capable of receiving carbon dioxide not only from the enterprises of the complex but also from at least one of the enterprises related to steel, electricity, and CCS (carbon dioxide capture and storage) in the vicinity of the complex, and a configuration capable of receiving carbon dioxide discharged from the carbon recycle complex. In the following explanation, the differences from the first embodiment will be mainly explained, and overlapping explanations will be omitted or simplified.

In this embodiment, in addition to corporations A and B (see Figure 2), corporations H (see Figure 7) and J (see Figure 8) also own carbon dioxide supply devices 300H and 300J, respectively, and corporations A, B, H, and J manage the collection and supply of carbon dioxide.
In this embodiment, terminals 10H and 10J are also installed in the enterprises H and J, respectively (see FIG. 9). The terminals 10H and 10J exchange information with the enterprises A to G, H, and J, and with the server 20, respectively, through the information network NW. The specific aspects of the terminals 10H and 10J are similar to the terminals 10A to 10G described in the first embodiment, respectively, and therefore the description will be omitted or simplified.

(Acceptance of carbon dioxide from outside the carbon recycling complex)
7 is a schematic diagram showing a connection between enterprises in a carbon recycle complex and a carbon dioxide common pipe according to an embodiment of the present invention. In this embodiment, the carbon dioxide common pipe 100 has an external receiving port for receiving a supply of carbon dioxide from an enterprise outside the carbon recycle complex, and an external supply port for supplying carbon dioxide to an enterprise outside the carbon recycle complex.
7 shows a company H (carbon dioxide supplying company) which is at least one of a steel-related, electric power-related and CCS-related company connected to each other by a carbon dioxide supply pipe, and a carbon dioxide common pipe 100. The connection between the company H and the carbon dioxide common pipe 100 in this embodiment is assumed to be connected to any of the locations of the carbon dioxide common pipe 100 described in the first embodiment.
A supply pipe laid from the enterprise H to the carbon dioxide common pipe 100 is connected to the external receiving port 320H. In addition, as shown in Fig. 7, in one aspect of this embodiment, the carbon dioxide common pipe 100 has an external supply port 350H. A discharge pipe 350P for discharging carbon dioxide from the carbon dioxide common pipe 100 is connected to the external supply port 350H.

The carbon dioxide supplying device 300H has a carbon dioxide capture device 310H that captures carbon dioxide generated by the business entity H, and a carbon dioxide supply control means 330H that controls the supply of carbon dioxide. The carbon dioxide supply control means 330H is connected to the external receiving port 320H of the carbon dioxide common pipe 100 by a supply pipe. The specific aspects of the carbon dioxide supplying device 300H, the carbon dioxide capture device 310H, and the carbon dioxide supply control means 330H are similar to the carbon dioxide supplying devices 300A and 300B, the carbon dioxide capture devices 310A and 310B, and the carbon dioxide supply control means 330A and 330B described in the first embodiment, respectively, and therefore the description will be omitted or simplified.

In this embodiment, the business entity H has a power generation device 900H as a device for generating carbon dioxide, as shown in FIG. 7. Examples of the power generation device 900H include power generation devices (boiler power generation and gas turbine power generation devices, etc.) and boilers (coal boilers, etc.). The exhaust gas generated by the power generation device 900H is desulfurized and denitrified by a desulfurization device and a denitrification device (not shown). The carbon dioxide capture device 310H captures carbon dioxide from the exhaust gas after desulfurization and denitrification. The carbon dioxide captured by the carbon dioxide capture device 310H is supplied to the carbon dioxide common pipe 100 via the carbon dioxide supply device 300H, in the same manner as in the first embodiment.

The carbon dioxide capture device 310H and the carbon dioxide supply control means 330H are connected to a terminal 10H as shown in Fig. 9. The carbon dioxide supply control means 330H transmits supply information (information on the supply amount and supply pressure of carbon dioxide supplied by the enterprise H to the carbon dioxide common pipe 100) to the server 20 via the terminal 10H.
Furthermore, the supply information transmitted from terminal 10H to server 20 may include information on the quality, such as the purity of carbon dioxide (quality information). The carbon dioxide quality information can be input to terminal 10H, for example, using input means 12 of terminal 10H. The carbon dioxide quality information can also be stored in storage means 13 of terminal 10H.

In this embodiment, the discharge pipe 350P connected to the external supply port 350H is connected to at least one of the enterprises related to CCS (carbon dioxide capture and storage) and the enterprises to which carbon dioxide is sold via pipeline. By connecting the discharge pipe 350P to the carbon dioxide common pipe 100, carbon dioxide generated in the carbon recycle complex can be discharged to CCS-related enterprises outside the complex. It is preferable that a flowmeter, a pressure gauge, a thermometer, and a purity meter are connected to the discharge pipe 350P. It is preferable that discharge information of the carbon dioxide discharged outside the carbon recycle complex detected by the flowmeter, pressure gauge, thermometer, and purity meter is also transmitted to the server 20.

(Sea and land shipments of carbon dioxide)
Fig. 8 shows a schematic diagram for explaining the configuration of carbon dioxide reception and delivery. Specifically, Fig. 8 shows a schematic diagram of facilities and devices for marine reception (marine arrival) and marine delivery (marine delivery) of carbon dioxide, and land reception (land arrival) and land delivery (land delivery) of carbon dioxide. Note that in this specification, reception and delivery may be collectively referred to as inbound and outbound.
Marine shipments of carbon dioxide include, for example, receipt and delivery of liquefied carbon dioxide (liquefied CO ₂ ) from overseas, and delivery to CCS-related enterprises.
In the case of land-based transport, the amount (lot) of carbon dioxide transported is small, so land-based imports and shipments of carbon dioxide include receiving carbon dioxide from a CCS base and discharging it to a CCS base, and selling and shipping liquefied carbon dioxide.

In this embodiment, an example is given of a case where corporate entity J has facilities and devices for receiving and unloading carbon dioxide at sea (sea import/export) and for receiving and unloading carbon dioxide on land (land import/export). Corporate entity J is both a carbon dioxide receiving entity and a carbon dioxide supplying entity. Note that the present invention is not limited to the example of this embodiment, and other corporate entities within the carbon recycle complex may have facilities and devices for receiving and unloading carbon dioxide.

In this embodiment, the connection between the business entity J and the carbon dioxide common pipe 100 is assumed to be connected to any of the locations of the carbon dioxide common pipe 100 described in the first embodiment.

In this embodiment, business entity J has a carbon dioxide supply device 300J, a carbon dioxide receiving device 400J, and a carbon dioxide import/export base 460J that can receive and dispense (ship) carbon dioxide.

The carbon dioxide receiving device 400J is a device that receives carbon dioxide from the carbon dioxide common piping 100 and supplies the carbon dioxide to the carbon dioxide import/export terminal 460J.
The carbon dioxide receiving device 400J has a carbon dioxide receiving control means 430J. The carbon dioxide receiving control means 430J is connected to an external supply port 420J to the carbon dioxide common pipe 100. The carbon dioxide receiving device 400J and the carbon dioxide common pipe 100 are connected by a receiving pipe. Specific aspects of the carbon dioxide receiving control means 430J are similar to the carbon dioxide receiving control means 430C, 430D, and 430E described in the first embodiment, respectively, and therefore description thereof will be omitted or simplified.

The carbon dioxide receiving control means 430J is connected to a terminal 10J as shown in Fig. 9. The terminal 10J transmits values detected by the carbon dioxide receiving control means 430J (receiving information: information on the amount and pressure of carbon dioxide received by the corporate entity J from the carbon dioxide common pipe 100) to the server 20. The server 20 transmits the receiving information transmitted from the corporate entity J to the terminals 10A and 10B of the corporate entities A and B as carbon dioxide supplying companies. By transmitting the receiving information of the corporate entity J to the corporate entities A and B, it becomes easier to manage the balance between carbon dioxide generation and consumption in the carbon recycle complex.
Furthermore, planned acceptance information regarding the planned amount and planned acceptance pressure of carbon dioxide that corporate entity J plans to accept may also be inputted into the input means 12 of terminal 10J and stored in storage means 13. The planned acceptance information of corporate entity J may also be transmitted from terminal 10J to server 20, and server 20 may transmit the planned acceptance information transmitted from corporate entity J to terminals 10A and 10B of corporate entities A and B as carbon dioxide supplying companies. By transmitting the planned acceptance information of corporate entity J to corporate entities A and B, it becomes easier to manage the balance between the generation and consumption of carbon dioxide in the carbon recycle complex. For example, the planned acceptance information includes information regarding the monthly usage schedule, the weekly usage schedule, and the daily usage schedule.

The carbon dioxide supplying device 300J is a device that compresses the gaseous CO ₂ obtained by vaporizing the liquefied CO ₂ at the carbon dioxide import/export base 460J and supplies it to the carbon dioxide common pipe 100 (the carbon dioxide supplying device 300J may also be referred to as a "liquefied CO ₂ -derived gaseous CO ₂ supplying device"). The carbon dioxide supplying device 300J has a carbon dioxide supply control means 330J that controls the supply of carbon dioxide. The carbon dioxide supply control means 330J of the carbon dioxide supplying device 300J is connected to the carbon dioxide import/export base 460J. The carbon dioxide supply control means 330J is connected to the external receiving port 320J of the carbon dioxide common pipe 100 by a supply pipe. The specific aspects of the carbon dioxide supply control means 330J are the same as the carbon dioxide supply control means 330A and 330B described in the first embodiment, and therefore the description will be omitted or simplified.

The carbon dioxide supply control means 330J is connected to the terminal 10J as shown in Fig. 9. The carbon dioxide supply control means 330J transmits supply information (information on the supply amount and supply pressure of carbon dioxide supplied by the enterprise J to the carbon dioxide common pipe 100) to the server 20 via the terminal 10J.
Furthermore, the supply information transmitted from terminal 10J to server 20 may include information on the quality, such as the purity of carbon dioxide (quality information). The carbon dioxide quality information can be input to terminal 10J, for example, using input means 12 of terminal 10J. The carbon dioxide quality information can also be stored in storage means 13 of terminal 10J.

The carbon dioxide import/export terminal 460J has a liquefied carbon dioxide storage tank 461J for storing liquefied _CO2 , a dedicated loading arm 462J for unloading liquefied _CO2 from a liquefied carbon dioxide carrier 463J, a dedicated loading arm 465J for unloading liquefied _CO2 from a tanker 464J as a means of transporting liquefied carbon dioxide, a liquefied _CO2 vaporizer 466J, and a carbon dioxide liquefaction device 467J for liquefying gaseous carbon dioxide (gaseous _CO2 ).

The carbon dioxide import/export base 460J is connected to the carbon dioxide supply control means 330J and the carbon dioxide receiving control means 430J.

The liquefied carbon dioxide storage tank 461J has a carbon dioxide purity measuring device 4611J. The carbon dioxide purity measuring device 4611J automatically measures and records the purity inside the tank online at all times.

The carbon dioxide liquefaction device 467J is a device that liquefies carbon dioxide using carbon dioxide received from the carbon dioxide common pipe 100 as a raw material. The carbon dioxide liquefaction device 467J is connected to the first receiving valve 432 of the carbon dioxide receiving control means 430J and the liquefied carbon dioxide storage tank 461J. The carbon dioxide received by the enterprise J from the carbon dioxide common pipe 100 is supplied to the carbon dioxide liquefaction device 467J via the carbon dioxide receiving control means 430J, the supplied carbon dioxide is compressed to produce liquefied _CO2 , and the produced liquefied _CO2 is supplied to the liquefied carbon dioxide storage tank 461J and stored.

As described in the first embodiment, the carbon recycle device 700E of the enterprise E is a device that liquefies carbon dioxide. The liquefied _CO2 produced by the enterprise E may not be shipped by the enterprise E itself, but may be, for example, configured to connect the carbon recycle device 700E of the enterprise E to the liquefied carbon dioxide storage tank 461J of the enterprise J by a pipe, and the liquefied _CO2 produced by the carbon recycle device 700E may be supplied to the liquefied carbon dioxide storage tank 461J and stored therein.

The loading arms 462J, 465J are each connected to the liquefied carbon dioxide storage tank 461J via a liquefied _CO2 supply pipe 4601J. The liquefied _CO2 unloaded by the loading arms 462J, 465J is supplied to the liquefied carbon dioxide storage tank 461J and stored therein.
In addition, in this embodiment, the liquefied _CO2 stored in the liquefied carbon dioxide storage tank 461J can also be supplied to the loading arms 462J, 465J via a liquefied _CO2 supply pipe 4601J.
The loading arm 462J can also transfer the liquefied _CO2 stored in the liquefied carbon dioxide storage tank 461J to a liquefied carbon dioxide carrier 463J for shipping by sea.
The loading arm 465J can also transfer the liquefied _CO2 stored in the liquefied carbon dioxide storage tank 461J to a tanker truck 464J for land shipment.
That is, the liquefied _CO2 supply pipe 4601J can also supply liquefied _CO2 in both directions between the liquefied carbon dioxide storage tank 461J and the loading arms 462J, 465J.

The liquefied _CO2 vaporizer 466J is connected to the liquefied carbon dioxide storage tank 461J and the carbon dioxide compressor 331 of the carbon dioxide supply control means 330J. The vaporizer 466J vaporizes the liquefied _CO2 supplied from the liquefied carbon dioxide storage tank 461J, and supplies the gaseous _CO2 to the carbon dioxide compressor 331. The carbon dioxide supply device 300J supplies the gaseous _CO2 compressed by the carbon dioxide compressor 331 to the carbon dioxide common pipe 100.

(server)
In this embodiment, the server 20 exchanges information with terminals 10A to 10G, 10H, and 10J installed in the business entities A to G, H, and J, and collectively manages raw materials such as carbon dioxide and hydrogen, as well as utilities, related to carbon recycling. Specific aspects of the server 20 are similar to those of the server 20 described in the first embodiment, and therefore descriptions thereof will be omitted or simplified.

In this embodiment, the server 20 has a payment system for calculating and paying the cost to the supplier enterprises H and J when the enterprises H and J supply carbon dioxide to the carbon dioxide common pipe 100. As an example of this payment system, for example, the carbon dioxide production cost calculation means 2444 of the server 20 calculates the carbon dioxide production cost of the enterprises H and J, similar to the first embodiment, based on the supply information transmitted to the server 20 from the terminals 10H and 10J of the enterprises H and J. Note that the server 20 does not have to have this payment system, and in this case, the cost is paid according to the price offered by the enterprises H and J (periodic pre-agreed price).

(Carbon recycling complex operation method)
The operation method using the carbon recycle complex operation system according to this embodiment includes the following points in addition to the contents described in the first embodiment.

When companies H and J supply carbon dioxide to the carbon dioxide common pipe 100, or when company J receives carbon dioxide from the carbon dioxide common pipe 100, the purity of carbon dioxide in the carbon dioxide common pipe 100 is controlled to a predetermined value or higher.

In this embodiment, the liquefied CO ₂ stored in the same liquefied carbon dioxide storage tank 461J is used for the receipt and delivery of carbon dioxide by the enterprise J. Therefore, the purity of the liquefied CO ₂ stored in the liquefied carbon dioxide storage tank 461J is maintained at a purity level that can be used by each enterprise in the petrochemical complex and at a purity level that is higher than the purity required by the shipping destination of the liquefied CO ₂ of the enterprise J. The carbon dioxide purity measuring device 4611J automatically measures and records the purity in the liquefied carbon dioxide storage tank 461J online at all times, making it easy for the enterprise J to manage that the purity of the liquefied CO ₂ is higher than the required purity. In addition, for example, the enterprise J checks whether the liquefied CO ₂ transported to the carbon dioxide import/export base 460J by the liquefied carbon dioxide carrier 463J or the lorry 464J meets the quality standards, such as the purity, required for the liquefied CO ₂ stored in the liquefied carbon dioxide storage tank 461J. By preventing liquefied _CO2 that does not meet the quality standard from being accepted into the liquefied carbon dioxide storage tank 461J, it becomes easier to manage the quality standard of the liquefied _CO2 in the liquefied carbon dioxide storage tank 461J.

When companies H and J supply carbon dioxide to the carbon dioxide common pipe 100, or when company J receives carbon dioxide from the carbon dioxide common pipe 100 into the company, the pressure of carbon dioxide (gaseous CO ₂ ) in the carbon dioxide common pipe 100 is controlled to be above a predetermined pressure.
In this embodiment, the pressure in the carbon dioxide common pipe 100 can be controlled to a constant value by at least one of the carbon dioxide supply control means 330A, 330B, 330H, 330J.
In the present embodiment, the calculation means 244 of the server 20 generates carbon dioxide supply control information for controlling the supply of carbon dioxide in the same manner as in the first embodiment. The server transmission means 27 transmits the carbon dioxide supply control information to the terminals 10A, 10B, 10H, and 10J of the enterprises A, B, H, and J.
Similar to the carbon dioxide capture devices 310A and 310B, the carbon dioxide capture device 310H and the carbon dioxide supply device 300J constantly control their operation states based on the carbon dioxide supply control information transmitted from the server transmission means 27. In addition, the carbon dioxide capture device 310H and the carbon dioxide supply device 300J may constantly control their operation states based on the usage schedule information notified by the notification means 242.
Similar to the carbon dioxide supply control means 330A, 330B, the carbon dioxide supply control means 330H, 330J controls the air supply pressure of the carbon dioxide compressor 331 so as to maintain the pressure in the carbon dioxide common piping 100 constant based on the carbon dioxide supply control information received via the terminals 10H, 10J.
Alternatively, the carbon dioxide capture device 310H and the carbon dioxide supply device 300J control the operating states of the carbon dioxide capture device 310H and the carbon dioxide supply device 300J so as to maintain the pressure in the carbon dioxide common pipe 100 constant based on carbon dioxide supply control information received via the terminals 10H and 10J.

The server 20 controls in real time the production amount of gaseous _CO2 at the external sites (business entities H and J) and the supply flow rate and supply pressure to the carbon dioxide common pipe 100. The real-time control is performed in the same manner as the "supply control process" described in the first embodiment.

When company J receives carbon dioxide from the carbon dioxide common pipe 100, companies A, B, and J constantly monitor the pressure of the received carbon dioxide (gaseous CO ₂ ) using the first supply pressure gauge 333 of companies A and B, and the first receiving pressure gauge 433 of company J.
If the pressure of the gaseous _CO2 received by company J from the carbon dioxide common pipe 100 is equal to or higher than a predetermined pressure, the emergency relief is activated and the operation of the carbon dioxide compressors 331 of companies A and B is controlled to be reduced (the supply air pressure is reduced).
When the pressure of the gaseous _CO2 received by enterprise J from the carbon dioxide common pipe 100 is lower than a predetermined pressure, the carbon dioxide compressors 331 of enterprises A and B are operated (the supply pressure is increased).

When the enterprises H and J supply carbon dioxide to the carbon dioxide common pipe 100 or receive carbon dioxide from the carbon dioxide common pipe 100, they manage the supply and reception amounts. The supply and reception amounts are managed normally, during scheduled maintenance work (SDM; Shut Down Maintenance), or in an emergency.

Under normal circumstances, the server 20 manages fixed quantities for each month, week, and day.
In this embodiment, the server transmission means 27 of the server 20 transmits information on the optimal amount of carbon dioxide to be secured to the carbon dioxide supplying companies (company A, B, H, J) in the same manner as in the first embodiment.
The server 20 creates an operation plan for the carbon dioxide recovery equipment 310A, 310B within the petrochemical complex, taking into account the amount of carbon dioxide supply (supply information) supplied from external sites (business entities H, J) and the amount of carbon dioxide required for the carbon recycling equipment.
The corporations A, B, H, and J that own the carbon dioxide supplying equipment make plans for carbon dioxide recovery or production so as to ensure the optimum amount of carbon dioxide required, and operate the carbon dioxide supplying equipment etc. in accordance with the plans.

In the event that the carbon dioxide supply device of the carbon recycle complex is stopped due to an emergency due to a problem or the like, the server 20 generates carbon dioxide supply control information to increase the supply to the carbon dioxide common pipe 100 from the carbon dioxide supply devices among the enterprises A, B, H, and J that are not stopped, and transmits the information to the enterprise that wishes to increase the supply amount, thereby controlling the supply state of carbon dioxide. For example, carbon dioxide can be received into the carbon dioxide common pipe 100 from the enterprise H outside the complex to make up for the carbon dioxide shortage caused by the stoppage. In addition, the liquefied _CO2 stored in the liquefied carbon dioxide storage tank 461J of the enterprise J can be vaporized, and the gaseous _CO2 can be received into the carbon dioxide common pipe 100 to make up for the carbon dioxide shortage caused by the stoppage.

When the carbon recycling equipment is shut down in an emergency, for example, a CCS-related enterprise outside the petrochemical complex can receive carbon dioxide from the external supply port 350H of the carbon dioxide common pipe 100 through the discharge pipe 350P, or enterprise J can receive carbon dioxide from the external supply port 420J of the carbon dioxide common pipe 100, liquefy the received carbon dioxide, and store it in the liquefied carbon dioxide storage tank 461J.

In addition, when the carbon dioxide capture equipment or carbon recycling equipment of the carbon recycle complex is stopped for regular maintenance work, the server 20 also manages the planned amount of carbon dioxide supplied from the enterprises H and J to the carbon dioxide common pipe 100, or the planned amount of carbon dioxide received from the carbon dioxide common pipe 100 to the enterprises H and J.

It is preferable that the server 20 has a system for paying fees to the supplier enterprises H and J when the enterprises H and J supply carbon dioxide to the carbon dioxide common pipe 100 .
The server 20 can also transfer the amount of carbon dioxide between the carbon dioxide received from the enterprises H and J (carbon dioxide supplied from the enterprises H and J to the carbon dioxide common pipe 100) and the carbon dioxide delivery amount of carbon dioxide supplied from the carbon dioxide supply enterprises (enterprises A and B) in the carbon recycle complex to the carbon dioxide common pipe 100 and delivered to enterprises outside the carbon recycle complex (for example, enterprise J or CCS-related enterprises). For example, if the unit price of carbon dioxide is the same in the enterprises inside and outside the carbon recycle complex, the server 20 can multiply the difference between the amount of carbon dioxide received and the amount of carbon dioxide delivered by the unit price of carbon dioxide to cause the cost calculation means 2443 to calculate the cost related to the transfer of carbon dioxide. The calculation of the cost related to the transfer of carbon dioxide can also be performed on a monthly basis.

When a corporate entity of a carbon recycle complex commissions the recovery of carbon dioxide to an external site outside the complex (e.g., corporate entity J), the carbon dioxide recovery costs and the like are paid to the external site by the corporate entity that commissioned the recovery. For example, when corporate entity J is a participant of the carbon recycle complex management system, the cost calculation means 2443 of the server 20 calculates the carbon dioxide recovery costs based on the amount of carbon dioxide received by corporate entity J from the carbon dioxide common pipe 100 (receiving information) and the production cost of liquefied carbon dioxide (production cost information). In addition, when the corporate entity commissioned to recover carbon dioxide is simply a carbon dioxide pipeline sales company, the costs are paid according to the cost presented by the sales company (by prior contract).
When corporate entity J receives carbon dioxide from a corporate entity in a carbon recycle complex, the amount of carbon dioxide generated by corporate entity J is calculated by subtracting the amount of carbon dioxide received by corporate entity J from the carbon dioxide common pipe 100.
It is preferable that the server 20 also calculates the cost when the corporate entity J participates in the carbon recycle complex management system and supplies vaporized carbon dioxide from the corporate entity J to the carbon dioxide common pipe 100 .
In addition, when a CCS-related corporate entity receives carbon dioxide from the carbon dioxide common pipe 100, the costs of capturing and storing the carbon dioxide are paid to the CCS-related corporate entity by the corporate entity that supplied the carbon dioxide to the carbon dioxide common pipe 100, based on the price offered by the CCS-related corporate entity.

In the carbon recycling complex according to this embodiment, it is preferable to use carbon dioxide generated or produced within the complex as the carbon dioxide used for carbon recycling, and when there is a shortage, to supply carbon dioxide from enterprises H and J to the common carbon dioxide piping 100.

When shipping carbon dioxide, a similar system is prepared as described above, except that the equipment and control methods are the same as when receiving carbon dioxide.

[Modifications of the embodiment]
The present invention is not limited to the above-described embodiment, and any modifications and improvements that can achieve the object of the present invention are included in the present invention.

The number of corporate entities constituting the carbon recycle complex according to the present invention is not limited to the example of the above embodiment, and the carbon recycle complex according to the present invention may be composed of at least two corporate entities.

The multiple enterprises constituting the carbon recycling complex according to the present invention may include a combination of a carbon dioxide supplying enterprise and a carbon dioxide receiving enterprise, and may not include a hydrogen supplying enterprise and a hydrogen receiving enterprise. In this case, a carbon recycled product may be manufactured using hydrogen generated within the carbon dioxide receiving enterprise and carbon dioxide supplied from the carbon dioxide supplying enterprise, or liquefied carbon dioxide or carbon dioxide reinforced concrete may be manufactured using only carbon dioxide supplied from the carbon dioxide supplying enterprise, or SAP may be manufactured using carbon dioxide supplied from the carbon dioxide supplying enterprise and ethylene manufactured within the carbon dioxide receiving enterprise or supplied from another enterprise.

The corporate entity implementing carbon recycling may not only use hydrogen received from the common hydrogen piping for carbon recycling, but may also use imported hydrogen or hydrogen received from other industrial complexes for carbon recycling. In the case of imported hydrogen, it is preferable to set up a hydrogen import base common to the industrial complex or at least one of the corporate entities that use hydrogen (for example, the corporate entity that uses the most hydrogen). The hydrogen import base may also be a base for importing hydrogen that is not carbon-free hydrogen. In the above embodiment, the corporate entity G has both a green hydrogen production device that produces green hydrogen and a carbon-free hydrogen import base as hydrogen supply devices, but the present invention is not limited to such an embodiment. For example, the green hydrogen production device and the carbon-free hydrogen import base may each be installed in a different corporate entity.

The multiple enterprises constituting the carbon recycling complex according to the present invention may include a combination of a hydrogen supplying enterprise and a hydrogen receiving enterprise, but may not include a combination of a carbon dioxide supplying enterprise and a carbon dioxide receiving enterprise. In this case, carbon dioxide generated within the hydrogen receiving enterprise and hydrogen supplied from the hydrogen supplying enterprise may be used to manufacture carbon recycled products.

In the carbon recycling complex according to the present invention, the roles played by each of the enterprises are not limited to the roles of the carbon dioxide supply enterprise, the carbon dioxide receiving enterprise, the hydrogen supply enterprise, and the hydrogen receiving enterprise shown in the above embodiment.

In a carbon recycling complex operation system, at least one of the multiple corporate entities constituting the complex may be a hydrogen supplying corporate entity capable of supplying hydrogen and a hydrogen receiving corporate entity capable of receiving hydrogen.

In a carbon recycling complex operation system, at least one of the multiple corporate entities constituting the complex may be a carbon dioxide supplying corporate entity capable of supplying carbon dioxide, and may also be a carbon dioxide receiving corporate entity capable of receiving carbon dioxide.

The carbon recycle complex according to the present invention may also include an integrated corporation consisting of a plurality of corporations. In this case, the integrated corporation is composed of two, three, or four types of corporations selected from the group consisting of a carbon dioxide supplying corporation, a carbon dioxide receiving corporation, a hydrogen supplying corporation, and a hydrogen receiving corporation. For example, the corporations constituting the carbon recycle complex may include an integrated corporation having corporation A and corporation C in the above embodiment.

When one company acting as a hydrogen receiving company has multiple carbon recycling devices, the number of carbon recycling devices is not limited to three as in company C in the above embodiment, but may be two or more, or may be four or more. Furthermore, the multiple carbon recycling devices owned by one company may be devices that perform different carbon recycling processes, or may be devices that perform the same carbon recycling process. Furthermore, among the companies that make up the carbon recycling complex, multiple companies may each have multiple carbon recycling devices.

The enterprises constituting the carbon recycling complex according to the present invention may be a joint venture enterprise established by a plurality of enterprises jointly investing. For example, in the case of the above embodiment, the enterprise G may be a joint venture enterprise established by a joint investment of the enterprises A and B. The enterprise G as a joint venture enterprise has a green hydrogen production device 550G as a hydrogen supply device 500G, and supplies green hydrogen to the hydrogen common pipe 200. In this case, the unit price algorithm reflecting the production cost of green hydrogen is disclosed and made accessible only to the enterprises (hydrogen supply enterprises and hydrogen receiving enterprises, etc.) that have invested in the joint venture. The unit price algorithm is generally obtained by dividing the total production cost by the integrated flow rate.
The hydrogen production cost calculation means 2445 calculates the production cost of green hydrogen by inputting the hydrogen supply cumulative data supplied from the green hydrogen production device to the common hydrogen pipe by the joint investment enterprises to the terminals 10A, 10B, 10G and the unit price of the input of the utilities necessary for the production of green hydrogen. The information input by the joint investment enterprises is not disclosed to any enterprises other than the enterprises that have invested in the joint investment enterprise.

The terminal is not limited to the configuration exemplified in the above embodiment, but may have at least an input means 12 and a terminal transmission means 141.

The server is not limited to the configuration exemplified in the above embodiment, but may have at least a storage unit 23 , a writing unit 241 , a notification unit 242 , a calculation unit 244 , and a server transmission unit 27 .
The server does not have to have a carbon dioxide production cost calculation means and a hydrogen production cost calculation means. For example, the terminals of the carbon dioxide supplying companies may each calculate the production cost of carbon dioxide individually and transmit it to the server, and the terminals of the hydrogen supplying companies may each calculate the production cost of hydrogen individually and transmit it to the server.

The server 20 may store in the storage means 23 the amount of carbon recycled product production in the companies C, D, E, and F, and the planned amount of carbon recycled product production to be used in the future in the companies A to G. The server 20 may also be configured to centrally manage the amount of carbon recycled production.

The server 20 may also have a utility management means for centrally managing utilities other than those described in the above embodiment (low-temperature steam volume (low-temperature exhaust heat)).

The carbon dioxide capture equipment does not have to be owned by each business entity, but rather multiple business entities may jointly invest in and share an integrated carbon dioxide capture equipment. In this case, the carbon dioxide receiving business entity may receive a share of the cost of the carbon dioxide used according to the amount of carbon dioxide supplied from each business entity to the shared carbon dioxide capture equipment. Similarly, the hydrogen capture equipment does not have to be owned by each business entity, but rather multiple business entities may jointly invest in and share an integrated hydrogen capture equipment.

In the carbon recycling complex according to the present invention, the carbon dioxide recovery unit may recover carbon dioxide not only from the coal boiler exhaust gas but also from exhaust gas having a lower carbon dioxide concentration than the coal boiler exhaust gas (for example, exhaust gas from an (R)FCC catalyst regeneration CO boiler, or exhaust gas from a coker unit, etc.). The carbon dioxide recovery unit may further recover carbon dioxide from a flue gas having a lower carbon dioxide concentration.
At least one of the multiple enterprises constituting the carbon recycle combinat may have a cement manufacturing apparatus. In the carbon recycle combinat according to the present invention, the carbon dioxide capture device may capture carbon dioxide generated from at least one of the coal boiler and the cement manufacturing apparatus. For example, the enterprise B in the above embodiment may have not only a coal boiler but also a cement manufacturing apparatus. When the enterprise B in the above embodiment has a coal boiler and a cement manufacturing apparatus, the carbon dioxide generated from the coal boiler and the cement manufacturing apparatus may be captured by the carbon dioxide capture device. The carbon dioxide generated from the cement manufacturing apparatus is also captured by the carbon dioxide capture device and supplied to the carbon dioxide common pipe by the carbon dioxide supply control means. Moreover, the enterprise B in the above embodiment may be an enterprise having a cement manufacturing apparatus instead of a coal boiler. In this case, the carbon dioxide capture device of the enterprise B captures the carbon dioxide generated from the cement manufacturing apparatus.

The carbon dioxide supply control means and hydrogen supply control means are not limited to the configurations described in the above embodiment.

The hydrogen supplying company may not have the ethylene production device or the electrolysis device described in the above embodiment, and may have other hydrogen generating devices. For example, the hydrogen supplying company may have a heavy naphtha catalytic reforming device that produces mixed xylene and a volatile oil fraction, such as a CCR (Continuous Catalyst Regeneration) using heavy naphtha as a raw material. In this case, the heavy naphtha catalytic reforming device is connected to a hydrogen recovery device, and hydrogen produced as a by-product during the production of mixed xylene and a volatile oil fraction is supplied to a common hydrogen piping by a hydrogen supplying device, so that the by-product hydrogen can be effectively used for carbon recycling.
Furthermore, if a hydrogen supplying company has a hydrogen import base, the hydrogen import base is not limited to a carbon-free hydrogen import base such as the company G described in the above embodiment, but may be any other base that is capable of importing and accepting hydrogen.

The carbon recycling equipment possessed by the carbon recycling complex according to the present invention is not limited to the example described in the above embodiment. The carbon recycling complex according to the present invention may also have an equipment for producing another carbon recycling product using a carbon recycling product produced by the carbon recycling equipment and at least one of carbon dioxide received from the carbon dioxide common pipe and hydrogen received from the hydrogen common pipe. In addition, the above embodiment has been described as an example in which corporate entity C has multiple carbon recycling equipment, but the present invention is not limited to such an embodiment, and multiple corporate entities may each have multiple carbon recycling equipment.

The carbon recycling complex according to the present invention may include a business entity having an apparatus (carbon recycling apparatus) for producing reinforced concrete using carbon dioxide received from a common carbon dioxide pipe as a raw material.

It is also preferable that a business entity that manufactures recycled carbon products has facilities for shipping recycled carbon products, for example, not only an import/export terminal for methanol, but also domestic land and sea import/export facilities.

The carbon recycling complex operation system of the present invention does not need to have a means for utilizing exhaust heat.

In the carbon recycling complex operation system, assuming an emergency shutdown of both _CO2 systems, each corporate entity will prepare a holder, as necessary, that can hold the time during which the downstream system can be stopped in an emergency.

The carbon recycling complex operation system of the present invention may be combined with a utility sharing management system for nitrogen and oxygen, for example, as described in Patent Document 1.

The carbon recycle complex operation system according to the present invention may supply carbon dioxide generated or produced within the carbon recycle complex to equipment or facilities outside the complex via a common carbon dioxide pipe. For example, by connecting the common carbon dioxide pipe to a pipeline outside the complex, carbon dioxide can be supplied to equipment or facilities outside the complex through the pipeline. Equipment or facilities outside the complex include facilities (houses) for producing agricultural products, etc., and carbon dioxide can be supplied to increase the carbon dioxide concentration in the facilities (houses) to increase carbon dioxide assimilation, thereby improving agricultural production efficiency of vegetables, etc. Another example of equipment or facilities outside the complex is an algae production device (e.g., a chlorella pool). For example, carbon dioxide can be blown into a chlorella pool using fine bubbles to increase carbon dioxide assimilation. In this way, it is possible to increase algae production.

The present invention is not limited to the aspect in which corporate entity J has a carbon dioxide import/export terminal as described in the second embodiment, but rather, a corporate entity within the carbon recycle complex (e.g., a carbon dioxide receiving corporate entity) may have a carbon dioxide import/export terminal, or a corporate entity having a carbon dioxide liquefaction device (e.g., corporate entity E having carbon recycle device 700E) may have a carbon dioxide import/export terminal.

The carbon recycling complex operation system of the present invention can also be deduced to carbon recycling through industrial collaboration with companies in other industries, such as steel and electric power companies.

In the second embodiment, an example has been given of a configuration in which the supply and withdrawal of carbon dioxide, etc. is managed by the carbon recycle complex operation system through information exchange between terminals 10H, 10J, etc. of corporate entities H and J and the information network NW and terminals 10A to 10G. However, other configurations include, for example, a configuration in which corporate entities H and J are not incorporated into the carbon recycle complex operation system.
In this embodiment, the server 20 does not exchange information with the terminals 10H, 10J, etc. of the enterprises H, J. The carbon recycle complex constantly and stably controls the contract quantity and receives carbon dioxide from the enterprises H, J into the carbon dioxide common pipe 100.
Furthermore, in this embodiment, it is preferable that information about carbon dioxide planned to be supplied from the corporations H, J to the carbon dioxide common pipe 100 (carbon dioxide supply schedule information) is stored in advance in the storage means 23 by the writing means 241 of the server 20. Based on the carbon dioxide supply schedule information provided by the corporations H, J, it is possible to constantly receive a fixed amount of carbon dioxide from the corporations H, J into the carbon dioxide common pipe 100, control the flow rate to a constant value with the first supply valves of the corporations H, J, and maintain the pressure in the carbon dioxide common pipe 100 constant.
In this embodiment, the calculation means of the server 20 calculates the optimum amount of carbon dioxide to be secured based on not only the carbon dioxide receiving information and the carbon dioxide usage schedule information but also the carbon dioxide supply schedule information provided by the corporations H and J. In other words, the server 20 calculates the optimum amount of carbon dioxide to be secured so as to produce the maximum effect at the minimum cost for the entire complex. The server transmission means 27 of the server 20 transmits information regarding the optimum amount of carbon dioxide to be secured to the carbon dioxide supplying corporations.
The carbon recycle complex management system controls the operation of the carbon dioxide capture devices 310A, 310B of the enterprises A, B so as to maintain a balance between the generation and consumption of carbon dioxide. That is, in order to prevent the carbon dioxide capture devices 310A, 310B of the enterprises A, B in the carbon recycle complex from being affected by fluctuations in the operation of the carbon dioxide supply devices 300H, 300J of the enterprises H, J outside the carbon recycle complex, the enterprises H, J perform daily management so as to achieve the planned quantity based on the prior sales contract, and also maintain the supply at a constant flow rate. On the other hand, when the enterprises H, J are incorporated into the carbon recycle complex, the complex site (for example, the valve control unit 26 of the server 20) controls the first supply flow meter 334 of the enterprises H, J so as to achieve the planned quantity.

100...carbon dioxide common pipe, 10A...terminal, 10B...terminal, 10C...terminal, 10D...terminal, 10E...terminal, 10F...terminal, 10G...terminal, 11...display means, 12...input means, 13...storage means, 14...control means, 141...terminal transmission means, 142...display control means, 20...server, 200...hydrogen common pipe, 21...display means, 22...input means, 23...storage means, 231...program storage unit, 232...receiving information storage means, 233...usage schedule information storage means, 234...supply information storage means, 235...business information storage means, 24...control means, 241...writing means, 242...notification means, 243...publication means, 2 44...calculation means, 2441...carbon dioxide supply control information generation means, 2442...hydrogen supply control information generation means, 2443...cost calculation means, 2444...carbon dioxide production cost calculation means, 2445...hydrogen production cost calculation means, 2446...carbon-free rate calculation means, 2447...carbon recycle rate calculation means, 245...power steam balance optimization means, 25...input/output control unit, 26...valve control unit, 27...server transmission means, 300A...carbon dioxide supply device, 300B...carbon dioxide supply device, 300H...carbon dioxide supply device, 300J...carbon dioxide supply device, 310A...carbon dioxide recovery device, 310 B...carbon dioxide capture device, 310H...carbon dioxide capture device, 320A...first supply port, 320B...first supply port, 320H...external receiving port, 320J...external receiving port, 330A...carbon dioxide supply control means, 330B...carbon dioxide supply control means, 330H...carbon dioxide supply control means, 330J...carbon dioxide supply control means, 331...carbon dioxide compressor, 332...first supply valve, 333...first supply pressure gauge, 334...first supply flow meter, 335...first supply thermometer, 350H...external supply port, 400C...carbon dioxide receiving device, 400D...carbon dioxide receiving device, 400E...carbon dioxide receiving device, 400J...second Carbon dioxide receiving device, 420C...first receiving port, 420J...external supply port, 430C...carbon dioxide receiving control means, 430D...carbon dioxide receiving control means, 430J...carbon dioxide receiving control means, 432...first receiving valve, 433...first receiving pressure gauge, 434...first receiving flow meter, 435...first receiving thermometer, 460J...carbon dioxide import/export base, 461J...liquefied carbon dioxide storage tank, 462J...loading arm, 463J...liquefied carbon dioxide carrier, 464J...lorry, 465J...loading arm, 466J...vaporizer, 467J...carbon dioxide liquefaction device, 4601J...liquefied CO ₂ supply pipe, 4611J... carbon dioxide purity measuring device, 500A... hydrogen supply device, 500B... hydrogen supply device, 500G... hydrogen supply device, 510A... hydrogen recovery device, 510B... hydrogen recovery device, 510G... hydrogen recovery device, 520A... second supply port, 520G... second supply port, 530A... hydrogen supply control means, 530B... hydrogen supply control means, 530G... hydrogen supply control means, 531... hydrogen compressor, 532... second supply valve, 533... Second supply pressure gauge, 534...second supply flow meter, 535...second supply thermometer, 550G...green hydrogen production apparatus, 560G...hydrogen import terminal, 561G...receiving tank, 562G...loading arm, 563G...vaporizer, 564G...receiving tank, 565G...loading arm, 566G...hydrogen desorption apparatus, 600C...hydrogen receiving apparatus, 600F...hydrogen receiving apparatus, 620C...second receiving port, 630C...hydrogen receiving control means, 630F...hydrogen receiving control means, 632...second receiving valve, 633...second receiving pressure gauge, 634...second receiving flow meter, 635...second receiving thermometer, 640C...branching pipe, 700C...carbon recycle device, 700D...carbon recycle device, 700E...carbon recycle device, 700F...carbon recycle device, 701...carbon recycle device, 702...carbon recycle device, 703...carbon recycle device , 800...exhaust heat utilization means, 900A...ethylene production apparatus, 900B...electrolysis apparatus, 900D...hydrogen generation apparatus, 900F...carbon dioxide generation apparatus, 900H...power generation apparatus, etc., 901A...heavy naphtha catalytic reforming apparatus, 901B...coal boiler, 920C...methanol import/export terminal, A...business entity, B...business entity, C...business entity, D...business entity, E...business entity, F...business entity, G...business entity, H...business entity, J...business entity, NW...information network.

Claims (42)

A carbon recycling complex operation system for recycling carbon dioxide generated in a complex composed of multiple business entities,
The plurality of enterprises constituting the industrial complex include at least one combination of a carbon dioxide supply enterprise that supplies carbon dioxide and a carbon dioxide receiving enterprise that receives carbon dioxide, and a hydrogen supply enterprise that supplies hydrogen and a hydrogen receiving enterprise that receives hydrogen,
The carbon recycling complex operation system comprises:
an information network connected between the plurality of business entities;
A plurality of terminals and a server connected via the information network;
A carbon dioxide common pipe connecting the carbon dioxide supplying entity and the carbon dioxide receiving entity;
A common hydrogen pipeline connecting the hydrogen supplying company and the hydrogen receiving company;
A carbon dioxide supplying device that is installed in the carbon dioxide supplying enterprise and supplies carbon dioxide to the carbon dioxide common pipe;
A carbon dioxide receiving device that is installed in the carbon dioxide receiving enterprise and receives carbon dioxide from the carbon dioxide common pipe;
A hydrogen supply device that is installed in the hydrogen supply company and supplies hydrogen to the hydrogen common pipe;
A hydrogen receiving device installed in the hydrogen receiving enterprise and receiving hydrogen from the hydrogen common pipe;
a carbon recycling device for recycling carbon dioxide, the carbon dioxide receiving company and/or the hydrogen receiving company being installed in the company implementing carbon recycling;
The carbon dioxide supply device is
A carbon dioxide capture device that captures carbon dioxide generated by the carbon dioxide supplying company;
a carbon dioxide supply control means connected to a first supply port of the carbon dioxide common pipe and controlling the supply of carbon dioxide;
The carbon dioxide receiving device comprises:
A carbon dioxide receiving control means is connected to a first receiving port of the carbon dioxide common pipe and controls the receiving of carbon dioxide,
The hydrogen supply device is
A hydrogen recovery device that recovers hydrogen generated by the hydrogen supply company and a hydrogen supply control means that is connected to a second supply port of the hydrogen common pipe and controls the supply of hydrogen,
The hydrogen receiving device comprises:
a hydrogen receiving control means connected to a second receiving port of the hydrogen common pipe for controlling the receiving of hydrogen;
The carbon recycling device includes:
an apparatus that is connected to at least one of the carbon dioxide receiving apparatus and the hydrogen receiving apparatus, and performs carbon recycling using at least one of the received carbon dioxide and hydrogen as a raw material;
The terminal is installed in the plurality of enterprises constituting the petrochemical complex, and is connected to at least one of the carbon dioxide supply control means, the carbon dioxide acceptance control means, the hydrogen supply control means, and the hydrogen acceptance control means;
The terminal includes:
An input means for inputting information on at least one of a planned amount of carbon dioxide to be used for carbon recycling and a planned amount of hydrogen to be used;
a terminal transmission means for transmitting the use schedule information, supply information received from at least one of the carbon dioxide supply control means and the hydrogen supply control means, and reception information transmitted from the carbon dioxide reception control means and the hydrogen reception control means to the server,
The server,
a storage means for storing the use schedule information, the supply information, and the acceptance information transmitted by the terminal transmission means;
a writing means for storing the scheduled use information, the supply information, and the acceptance information in the storage means;
a notification means for notifying the plurality of enterprises constituting the petrochemical complex of the planned use information, the supply information, and the receiving information stored in the storage means;
a calculation means for generating carbon dioxide supply control information for controlling the supply of carbon dioxide by the carbon dioxide supply control means and hydrogen supply control information for controlling the supply of hydrogen by the hydrogen supply control means based on the reception information;
a server transmission means for transmitting the carbon dioxide supply control information to the carbon dioxide supply control means and for transmitting the hydrogen supply control information to the hydrogen supply control means,
The carbon dioxide supply control means controls the carbon dioxide to be supplied to the carbon dioxide common pipe based on the carbon dioxide supply control information,
The hydrogen supply control means controls hydrogen to be supplied to the common hydrogen pipe based on the hydrogen supply control information.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to claim 1,
The complex includes the carbon dioxide supplying entity and the carbon dioxide receiving entity,
The carbon dioxide supply control means is
a carbon dioxide compressor that compresses carbon dioxide and sends it into the carbon dioxide common pipe;
a first supply valve for controlling the supply of carbon dioxide into the carbon dioxide common pipe;
a first supply pressure meter that detects the pressure of carbon dioxide supplied to the carbon dioxide common pipe, and a first supply flow meter that detects the flow rate of carbon dioxide supplied to the carbon dioxide common pipe,
The carbon dioxide intake control means includes:
a first receiving valve for controlling the receiving of carbon dioxide from the carbon dioxide common pipe;
a first receiving pressure meter that detects the pressure of the carbon dioxide received from the carbon dioxide common pipe; and a first receiving flow meter that detects the flow rate of the carbon dioxide received from the carbon dioxide common pipe.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to claim 2,
the carbon dioxide supply control means further includes a first supply thermometer that detects the temperature of the carbon dioxide supplied to the carbon dioxide common pipe,
The carbon dioxide receiving control means further includes a first receiving thermometer for detecting a temperature of the carbon dioxide received from the carbon dioxide common pipe.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to claim 2 or 3,
The carbon dioxide supply control means controls the air supply pressure of the carbon dioxide compressor so as to maintain the pressure in the carbon dioxide common pipe constant based on the carbon dioxide supply control information.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 4,
The terminal is also connected to the carbon dioxide capture device;
The server transmission means also transmits the carbon dioxide supply control information to the carbon dioxide capture device,
The carbon dioxide capture device constantly controls the operation state of the carbon dioxide capture device based on the carbon dioxide supply control information.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to claim 5,
The carbon dioxide capture device controls an operating state of the carbon dioxide capture device based on the carbon dioxide supply control information so as to maintain a constant pressure in the carbon dioxide common pipe.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 6,
the complex includes the hydrogen supplying enterprise and the hydrogen receiving enterprise;
The hydrogen supply control means includes:
a hydrogen compressor that compresses hydrogen and sends it into the hydrogen common pipe;
a second supply valve for controlling the supply of hydrogen into the hydrogen common pipe;
a second supply pressure gauge that detects the pressure of hydrogen supplied to the hydrogen common pipe; and a second supply flow meter that detects the flow rate of hydrogen supplied to the hydrogen common pipe,
The hydrogen intake control means comprises:
a second receiving valve for controlling the receiving of hydrogen from the hydrogen common pipe;
a second receiving pressure gauge for detecting the pressure of hydrogen received from the hydrogen common pipe; and a second receiving flow rate meter for detecting the flow rate of hydrogen received from the hydrogen common pipe.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to claim 7,
the hydrogen supply control means further includes a second supply thermometer for detecting a temperature of hydrogen supplied to the common hydrogen pipe;
the hydrogen receiving control means further includes a second receiving thermometer for detecting the temperature of hydrogen received from the common hydrogen pipe;
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to claim 7 or 8,
the hydrogen supply control means constantly controls the air supply pressure of the hydrogen compressor so as to maintain the pressure in the hydrogen common pipe constant based on the hydrogen supply control information;
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 7 to 9,
the hydrogen receiving control means constantly transmits the pressure detected by the second receiving pressure meter and the flow rate detected by the second receiving flow rate meter to the hydrogen recovery device;
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 10,
The terminal is also connected to the hydrogen recovery device;
The server transmission means also transmits the hydrogen supply control information to the hydrogen recovery device,
The hydrogen recovery device constantly controls the operating state of the hydrogen recovery device based on the hydrogen supply control information.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to claim 11,
At least one of the hydrogen supply companies has a hydrogen import terminal for importing hydrogen,
The hydrogen import station is connected to the hydrogen recovery device;
The terminal transmission means of the terminal transmits information regarding the amount of imported hydrogen supplied to the hydrogen common pipe out of the amount of imported hydrogen imported by the hydrogen import terminal to the server as the supply information.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to claim 11 or 12,
the hydrogen recovery device controls an operating state of the hydrogen recovery device based on the hydrogen supply control information so as to maintain a constant pressure in the hydrogen common pipe.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 13,
At least one of the multiple enterprises constituting the industrial complex is the hydrogen supply enterprise capable of supplying hydrogen and is also the hydrogen receiving enterprise capable of receiving hydrogen;
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 14,
At least one of the hydrogen receiving entities has a plurality of carbon recycle units;
The hydrogen receiving device has a plurality of branch pipes for branching and supplying hydrogen received from the common hydrogen pipe to the plurality of carbon recycle devices.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 15,
A carbon recycling apparatus having a plurality of the carbon recycling apparatuses.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 16,
The carbon recycling device includes a device for producing at least one of methanol, methane, paraxylene, and dimethyl ether using carbon dioxide and hydrogen as raw materials.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 17,
The carbon recycling device includes at least one of a device for directly producing methanol and a device for directly producing paraxylene using carbon dioxide and hydrogen as raw materials.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 18,
The carbon recycling device includes at least one of a device for producing C1 chemical products using at least one of methanol and dimethyl ether produced by carbon recycling as a raw material, and a device for directly producing paraxylene;
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 19,
The carbon recycling device includes at least one of a device for producing formaldehyde or a device for producing acetic acid using methanol produced by carbon recycling as a raw material.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 20,
The carbon recycling device includes a device for producing olefins using methanol produced by carbon recycling as a raw material.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 21,
The carbon recycling device includes a device for producing ethylene using dimethyl ether produced by carbon recycling as a raw material.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 22,
The carbon recycling device includes at least one type of device for producing an oxygen-containing compound using carbon dioxide as a raw material,
The oxygen-containing compound is at least one compound selected from the group consisting of polycarbonate, urea, salicylic acid, potassium parahydroxybenzoate, acetic acid, sodium carbonate, and methionine.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 23,
The carbon recycling device includes at least one of a device for liquefying carbon dioxide and a device for producing reinforced concrete using carbon dioxide as a raw material.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 24,
The carbon recycling apparatus includes an apparatus for producing a superabsorbent resin using carbon dioxide and ethylene as raw materials.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 25,
The hydrogen supply device further includes at least one of a green hydrogen production device for producing green hydrogen and a carbon-free hydrogen import station;
The hydrogen supply device supplies at least one of the green hydrogen produced by the green hydrogen production device and the imported carbon-free hydrogen imported at the carbon-free hydrogen import base to the hydrogen common pipe.
A carbon recycling complex operation system characterized by: The carbon recycle complex operation system according to claim 26,
the terminal transmission means transmits to the server at least one of production green hydrogen supply information of the produced green hydrogen supplied to the hydrogen common pipe and import carbon-free hydrogen supply information of the imported carbon-free hydrogen supplied to the hydrogen common pipe;
The storage means of the server stores the produced green hydrogen supply information and the imported carbon-free hydrogen supply information;
The notification means notifies at least one of the produced green hydrogen supply information and the imported carbon-free hydrogen supply information stored in the storage means to the multiple corporate entities constituting the petrochemical complex.
A carbon recycling complex operation system characterized by: The carbon recycle complex operation system according to claim 27,
the hydrogen receiving device detects a total amount of carbon-free hydrogen, including at least one of the amount of produced green hydrogen and the amount of imported carbon-free hydrogen, received from the hydrogen common pipe and supplied to the carbon recycle device, using the hydrogen receiving control means, and transmits the total amount of carbon-free hydrogen to the server;
The storage means stores the total amount of carbon-free hydrogen,
The calculation means calculates a mass ratio of the total carbon-free hydrogen amount in a carbon recycled product obtained by recycling carbon dioxide in the carbon recycling device.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 26 to 28,
The carbon recycling device uses at least one of the produced green hydrogen and the imported carbon-free hydrogen and carbon dioxide as raw materials,
Equipment for producing carbon-free methanol,
At least one of an apparatus for producing carbon-free dimethyl ether, and an apparatus for directly producing paraxylene,
A carbon recycling complex operation system characterized by: In the carbon recycling complex operation system according to claim 29,
The carbon recycling device includes an apparatus for producing a C1 chemical product using at least one of the carbon-free methanol and the carbon-free dimethyl ether as a raw material,
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to claim 29 or 30,
The carbon recycling device includes at least one of a device for producing formaldehyde or a device for producing acetic acid using the carbon-free methanol as a raw material.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 29 to 31,
The carbon recycling device includes a device for producing olefins using the carbon-free methanol as a raw material.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 29 to 32,
The carbon recycling device includes a device for producing ethylene using the carbon-free dimethyl ether as a raw material.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 26 to 33,
The carbon recycling device includes a device for producing e-fuel using at least one of the produced green hydrogen and the imported carbon-free hydrogen and carbon dioxide as raw materials;
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 26 to 34,
The carbon recycling device includes a device for producing green methane using at least one of the produced green hydrogen and the imported carbon-free hydrogen and carbon dioxide as raw materials;
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 35,
the carbon dioxide receiving device detects the amount of carbon dioxide received from the carbon dioxide common pipe and supplied to the carbon recycle device using the carbon dioxide receiving control means, and transmits the amount of carbon dioxide to the server;
The storage means stores the amount of carbon dioxide,
The calculation means calculates a mass ratio of the amount of carbon dioxide in a carbon recycled product produced by the carbon recycling device using the recovered carbon dioxide.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 36,
The calculation means of the server has a cost calculation means for calculating at least one of a cost incurred by using the carbon dioxide received from the carbon dioxide common pipe and a cost incurred by using the hydrogen received from the hydrogen common pipe.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to claim 37,
The carbon dioxide receiving device transmits, as the receiving information, an amount of carbon dioxide received from the carbon dioxide common pipe and used to the server,
the hydrogen receiving device transmits to the server, as the receiving information, an amount of hydrogen received from the common hydrogen pipe and used;
The storage means stores the amount of carbon dioxide used and the amount of hydrogen used,
The cost calculation means calculates the cost based on the amount of carbon dioxide used and the amount of hydrogen used.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to claim 37 or 38,
The input means inputs at least one of production cost information used by the carbon dioxide supplying company to calculate the production cost of the carbon dioxide supplied to the carbon dioxide common pipe and information used by the hydrogen supplying company to calculate the production cost of the hydrogen supplied to the hydrogen common pipe,
The terminal transmitting means transmits the manufacturing cost information to the server,
The calculation means of the server has at least one of a carbon dioxide production cost calculation means for calculating a production cost of the carbon dioxide and a hydrogen production cost calculation means for calculating information regarding a production cost of the hydrogen,
The carbon dioxide production cost calculation means is available only to the carbon dioxide supplying enterprise,
The hydrogen production cost calculation means is available only to the hydrogen supply company;
The cost calculation means calculates at least one of the cost of carbon dioxide used by the carbon dioxide receiving company based on the amount of carbon dioxide used and the production cost of the carbon dioxide, and the cost of hydrogen used by the hydrogen receiving company based on the amount of hydrogen used and the production cost of the hydrogen.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 39,
The carbon recycling complex operation system comprises:
Waste heat generated by a plurality of enterprises other than the carbon dioxide supply enterprise;
and a means for utilizing exhaust heat generated within the carbon dioxide supplying company to recover and collect the exhaust heat and supply it to the carbon dioxide recovery device.
A carbon recycling complex operation system characterized by: In the carbon recycling complex operation system according to claim 40,
The exhaust heat utilization means recovers exhaust heat generated in at least one of the carbon recycling devices.
A carbon recycling complex operation system characterized by: In the carbon recycle complex operation system according to any one of claims 1 to 41,
The carbon dioxide common piping has an external receiving port for receiving a supply of carbon dioxide from a business entity outside the petrochemical complex, and an external supply port for supplying carbon dioxide to a business entity outside the petrochemical complex.
Carbon recycling complex operation system.

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