JP4084045B2 - Gas generator safety device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a safety device for a gas generating furnace that uses fine or granular fuel such as sawdust, chips, pellets, etc. as a raw material, and particularly relates to a safety device suitable for a biomass gasification power generation fixed bed type gas generating furnace. It is.
[0002]
[Prior art]
In general, woody waste such as sawdust (sawdust) that is generated in large quantities at sawmills, “okara” in the process of tofu production, and coffee bean residue were discarded with little use. However, with the progress of technology for effective utilization of industrial waste, various methods for treating such waste have been developed. Among these, waste gas is pyrolyzed in a gas generating furnace to obtain a combustible gas whose main combustible components are carbon monoxide and hydrogen, and a gas generator that is used as a fuel gas for an internal combustion engine for driving a private generator is proposed. (See Japanese Utility Model Publication No. 6-84109).
[0003]
The schematic configuration of the gas generator described in this publication will be briefly described with reference to the drawings. FIG. 4 is a longitudinal sectional view of the gas generator.
In the figure, 101 is a gas generating furnace, 102 is a furnace shell, 103 is a rooster, 104 is an air inlet, and 105 is a cooling cylinder. A gas generating furnace 101 includes a furnace shell 102 inside, a rooster 103 is disposed at a lower portion of the furnace shell 102, and a cooling cylinder having a cooling water flow passage inside a cylindrical wall at the top of the cylindrical furnace shell 102. 105 are connected to each other. A furnace lid 106 is attached to the upper part of the cooling cylinder 105, and a fuel supply device 107 having an injection cylinder that passes through the furnace lid and opens into the furnace shell is disposed. Is provided with a gas inlet 104 and a gas outlet 108 is provided at the upper part of the cooling cylinder. Further, the gas generator is provided with a water seal type explosion-proof device 111.
[0004]
In the gas generator, the generated gas generated in the furnace shell 101 is cooled while rising in the cooling cylinder 105 at a low flow rate, the gas temperature is lowered, and this temperature drop increases the humidity of the gas, The dust in the gas absorbs moisture and becomes heavy, and the relatively large-sized dust settles in the gas flow into the furnace shell and falls onto the fuel layer, and the generated gas with low dust content flows out from the gas outlet 108. To do. Further, the gas flowing out from the take-out port 108 flows out to the gas supply pipe via the cooling tower 109 and the dust removing tower 110.
[0005]
[Problems to be solved by the invention]
However, in the above apparatus, a water-sealed explosion-proof device 111 is provided as an explosion-proof device due to excessive gas pressure in the gas generating furnace, but this water-sealed explosion-proof device has a pressure distribution display device and a furnace for combustion adjustment. There is a problem that the system is not equipped with a system for constantly monitoring the abnormal reaction in the furnace, and the abnormal state in the furnace cannot be detected.
[0006]
Therefore, the present invention can display the pressure distribution for explosion prevention and combustion adjustment due to excessive gas pressure in the gas generating furnace, and also measure the abnormal reaction in the furnace by measuring the temperature of the gas pressure release duct connected to the furnace and the upper part of the furnace. An object of the present invention is to provide a highly safe safety device for a gas generating furnace equipped with a detection device that can detect the above-described problems and to solve the above-mentioned conventional problems.
[0007]
[Means for Solving the Problems]
For this reason, the technical solution means adopted by the present invention is:
A water-sealed liquid column meter is provided in a gas generating furnace that generates gas using sawdust supplied on a rooster disposed in the lower part of the gas generating furnace , and when the gas pressure in the gas generating furnace becomes excessive, the water In the gas generator safety device capable of releasing the generated gas in the furnace from the sealed liquid column meter, the water sealed liquid column meter has a communication pipe in which one end communicates with the furnace and the other end is inserted into the water container. And at least three water-sealed liquid column meters are installed in the gas generating furnace, and the three sealed pipes of the water-sealed liquid column meter are installed in the gas generating furnace. The openings are arranged at different heights in the furnace, the upper space of the furnace, the vicinity of the upper part of sawdust, and the vicinity of the center of the furnace, and the communication pipe is provided with a pressure monitor for detecting the pressure in the communication pipe. This is a gas generator safety device.
The pressure monitor is a gas generator safety device characterized in that the pressure in the communication pipe can be measured by a liquid column.
The communication pipe is provided with a temperature sensor that detects a gas temperature in the communication pipe.
The gas generator is a wood biomass gasification power generation fixed bed type gas generator, which is a gas generator safety device.
[0008]
Embodiment
An embodiment of a gas generator safety device according to the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of the safety device for a biomass gasification fixed bed gas generator according to the present invention, and FIG. FIG. 3 is a configuration diagram of a state in which a water-sealed liquid column meter is installed in a gas generation furnace. In addition, since this invention has the characteristics in the safety device added to a gas generator, detailed description of a gas generator is abbreviate | omitted.
In the figure, reference numeral 1 denotes an upper cylinder of a gas generating furnace, and a lid 2 is disposed on the upper surface of the upper cylinder 1. The upper cylinder 1 may be configured as a cooling cylinder as in the above-described example, but may not be a cooling cylinder. The lid 2 is provided with a known product gas take-out port 3 and sawdust input part S, and dust is removed on the upper surface of the lid 2 in order to remove dust in the gas taken out from the take-out port by the suction blower 5. A cyclone 4 as an apparatus is also arranged. Further, a plurality (three in the figure) of water-sealed liquid column meters 10 for detecting the pressure in the gas generating furnace are arranged on the lid.
[0009]
As shown in FIG. 2, the water-sealed liquid column meter 10 has one end 6a opened in the gas generating furnace 1 and the other end 6b inserted into the water container 7, and a water container 7 for storing water. And the water 8 stored in the water container, and the communication pipe 6 is sealed with the water 8 stored in the water container 7. The communication pipe 6 is provided with a thermometer (temperature sensor) 9 for detecting the gas temperature and temperature distribution in the communication pipe, and a pressure monitor 11 comprising a manometer, and the water container 7 detects the water level in the water container. A water level gauge 12 is arranged. The thermometer 9 can be a thermocouple, a rod-shaped thermometer, another simple thermometer, or the like, and the pressure monitor 11 can be a conventionally known pressure gauge.
[0010]
As shown in FIG. 3, a plurality of water-sealed liquid column meters 10 installed in the gas generation furnace are arranged in the gas generation furnace 1 by changing the heights of the respective openings 6 a. The pressure distribution in the height direction can be monitored. In FIG. 3, the three openings 6 a are set at a height near the furnace upper space, sawdust upper part, and the furnace center.
[0011]
As shown in FIG. 2, the water-sealed liquid column meter 10 is normally sealed with water 8 in the water container 7, but when the gas pressure in the furnace rises and exceeds a predetermined pressure (excessive gas pressure). At that time, the water in the communication pipe 6 is discharged into the water container 7 by the gas pressure in the furnace, the gas is injected into the water container, and the gas pressure can be released. Thus, the gas pressure in the furnace is prevented from becoming excessive. Further, the pressure in the height direction in the gas generating furnace and the gas temperature distribution in the furnace can be easily monitored by monitoring a plurality of water-sealed liquid column meters 10 and thermometers (temperature sensors) 9 attached to the gas generating furnace. Can be detected. That is, the manometer 11 provided in the communication pipe 6 can detect the gas pressure for each communication pipe, and the thermometer 9 provided in the communication pipe 6 can detect the gas temperature and temperature distribution in the communication pipe 6. it can.
[0012]
Further, the outputs from the thermometer 9 and the pressure monitor 11 arranged in the communication pipe 6 are appropriately inputted by a control device such as a computer, and a valve (not shown) is automatically controlled to generate stable gas. To be able to do. The valve control can also be manually performed as necessary.
[0013]
Although the above embodiment demonstrated the safety device attached to the biomass gasification power generation fixed bed type gas generating furnace, the safety device according to the present invention is not limited to the biomass gasification power generation fixed bed type gas generation furnace. Of course, the present invention can be applied to other gas generating apparatuses that need to detect the gas pressure, temperature, etc. in the generating furnace. In addition, the pressure gauge in the gas generating furnace and the thermometer in the communication pipe can be used in various forms suitable for the purpose, and if the installation location is also in the communication pipe, the appropriate position (the pressure and temperature to be detected) can be used. The number can be appropriately provided at a position where measurement can be performed accurately.
In addition, the present invention can be implemented in any other form without departing from the spirit or main features thereof. Therefore, the above-described embodiment is merely an example in all respects and should not be interpreted in a limited manner.
[0014]
【The invention's effect】
As is apparent from the above description, according to the present invention, there is provided a highly safe gas generator capable of displaying a pressure distribution for preventing explosion due to excessive gas pressure in the gas generating furnace and adjusting combustion. Can do. In addition, an excellent effect is obtained such that an abnormal reaction in the furnace can be detected by measuring the temperature of the gas pressure release duct connected to the inside of the furnace and the upper part of the furnace.
[Brief description of the drawings]
FIG. 1 is a perspective view of a safety device for a biomass gasification power generation fixed-bed gas generator according to the present invention.
FIG. 2 is a configuration diagram of one water seal liquid column meter.
FIG. 3 is a configuration diagram in a state where a water-sealed liquid column meter is installed in a gas generating furnace.
FIG. 4 is a longitudinal sectional view of a conventional biomass gasification power generation fixed-bed gas generating furnace.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Upper cylinder 2 of a gas generating furnace 2 Lid 3 Gas extraction port 4 Cyclone 5 Suction blower 6 Communication pipe 7 Water container 8 Water 9 Thermometer (temperature sensor)
10 Water-sealed liquid column meter 11 Pressure monitor 12 Water level meter

Claims (4)

A water-sealed liquid column meter is provided in a gas generating furnace that generates gas using sawdust supplied on a rooster disposed in the lower part of the gas generating furnace , and when the gas pressure in the gas generating furnace becomes excessive, the water In the gas generator safety device capable of releasing the generated gas in the furnace from the sealed liquid column meter, the water sealed liquid column meter has a communication pipe in which one end communicates with the furnace and the other end is inserted into the water container. And at least three water-sealed liquid column meters are installed in the gas generating furnace, and the three sealed pipes of the water-sealed liquid column meter are installed in the gas generating furnace. The openings are arranged at different heights in the furnace, the upper space of the furnace, the vicinity of the upper part of sawdust, and the vicinity of the center of the furnace, and the communication pipe is provided with a pressure monitor for detecting the pressure in the communication pipe. A gas generating furnace safety device characterized by comprising: The gas generator safety device according to claim 1, wherein the pressure monitor can measure the pressure in the communication pipe by a liquid column. The gas communication furnace safety device according to claim 1 or 2, wherein the communication pipe is provided with a temperature sensor that detects a gas temperature in the communication pipe. The gas generator safety device according to any one of claims 1 to 3, wherein the gas generator is a woody biomass gasification power generation fixed bed type gas generator.

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