JP4658404B2 - Diesel engine exhaust gas soot fuel conversion method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a diesel engine exhaust gas recovery soot fueling method and apparatus.
[0002]
[Prior art]
Conventionally, there has not been a decisive hit as a dust collector applied to exhaust gas of a diesel engine, but at present, some electric dust collectors and ceramic filters are beginning to be adopted. Unlike the conventional cyclone type dust collector, these electric dust collectors and ceramic filters have a collection rate of 90% or more. For this reason, a large amount of soot is collected and collected by these electric dust collectors and ceramic filters. Since soot has a very low bulk specific gravity (actually about 0.02 g / ml), the volume is enormous.
[0003]
The collected soot is currently treated as industrial waste, or the material collected by the ceramic filter is heat-treated using a heater.
[0004]
[Problems to be solved by the invention]
However, since the collected soot is bulky, handling, transportation, and waste disposal are difficult, the processing cost is high, and the number of processors is limited. In other words, the problems are summarized as follows.
[0005]
(1) Soot is poorly handled and difficult to transport.
(2) Since soot may spontaneously ignite during storage, it is necessary to be careful not to ignite spontaneously.
(3) Since soot has a low bulk density, enormous storage space and transportation costs are required.
(4) When soot is dumped, it is not good for the environment, and when it is heat-treated, many costs are required.
[0006]
Therefore, in view of the above circumstances, the present invention effectively uses soot collected from the exhaust gas of a diesel engine to reduce processing costs, storage and transportation costs, and ensure safety during handling and storage. It is an object of the present invention to provide a method and apparatus for converting diesel engine exhaust gas to soot that can be used.
[0007]
[Means for Solving the Problems]
The diesel engine exhaust gas recovery soot fueling method according to the first aspect of the present invention that solves the above-mentioned problem is that the soot recovered by the dust collection means from the exhaust gas of the diesel engine is discharged from the dust collection means and granulated by the granulation means. Thus, a fuel granulated product is obtained.
[0008]
The diesel engine exhaust gas recovery soot fueling method of the second invention is the diesel engine exhaust gas recovery soot fueling method of the first invention,
A primary storage process for primarily storing the recovered soot discharged from the dust collecting means;
And a granulating step of granulating the collected soot collected by a granulating means to obtain a fuel granulated product.
[0009]
The diesel engine exhaust gas recovery soot fueling method of the third invention is the diesel engine exhaust gas recovery soot fueling method of the first or second invention,
There is a kneading step before the granulation step. In this kneading step, the recovered soot is kneaded with water or a chemical solution as a binder by a kneading means, and the kneaded recovered soot is granulated in the granulation step to produce fuel. It is characterized by obtaining granules.
[0010]
The diesel engine exhaust gas recovery soot fueling method of the fourth invention is a diesel engine exhaust gas recovery soot fueling method of the third invention,
As the chemical solution, a solution obtained by adding a surfactant to water is used.
[0011]
The diesel engine exhaust gas recovery soot fueling method of the fifth invention is a diesel engine exhaust gas recovery soot fueling method of the third invention,
A chemical solution is characterized by using a surfactant added to water and an organic binder added thereto.
[0012]
The diesel engine exhaust gas recovery soot fueling method of the sixth invention is the diesel engine exhaust gas recovery soot fueling method of the first, second, third, fourth or fifth invention,
There is a sieving process after the granulation process. In this sieving process, the fuel granulated material obtained in the granulation process is sieved to separate it into good and defective products, and the defective products are returned to the previous granulation process and recycled. It is characterized by granulation.
[0013]
According to a seventh aspect of the present invention, there is provided a fueling device for collecting diesel engine exhaust gas soot from a diesel engine by collecting dust from the exhaust gas of the diesel engine by discharging it from the dust collecting means and granulating it by the granulating means. It is characterized by being configured to obtain a granulated product.
[0014]
The diesel engine exhaust gas recovery soot fueling apparatus of the eighth invention is a diesel engine exhaust gas recovery soot fueling apparatus of the seventh invention,
Primary storage means for primarily storing the recovered soot discharged from the dust collection means;
And a granulating means for obtaining a fuel granulated material by granulating the collected soot collected in the primary storage mode.
[0015]
The diesel engine exhaust gas recovery soot fueling apparatus of the ninth invention is the diesel engine exhaust gas recovery soot fueling apparatus of the eighth invention,
The inside of the primary storage means is N ₂ Inert gas atmosphere or low O by replacing with inert gas such as gas ₂ It is characterized by having a concentration atmosphere.
[0016]
Further, the diesel engine exhaust gas recovery soot fueling apparatus of the tenth invention is the diesel engine exhaust gas recovery soot fueling apparatus of the eighth invention,
When a temperature detector is provided in the primary storage means, and it is detected by this temperature detector that the internal temperature of the primary storage means has abnormally increased to a predetermined value or more, the gas supply means ₂ An inert gas such as a gas is supplied to the inside of the primary storage means, and the inside of the primary storage means is inert gas atmosphere or low O ₂ It is characterized by having a concentration atmosphere.
[0017]
The diesel engine exhaust gas recovery soot fueling apparatus of the eleventh aspect of the invention is the diesel engine exhaust gas recovery soot fueling apparatus of the seventh, eighth, ninth or tenth invention,
A kneading means is provided in front of the granulating means, soot collected by the kneading means is kneaded using water or a chemical solution as a binder, and the kneaded recovered soot is granulated by the granulating means to obtain a fuel granulated product. It is configured as described above.
[0018]
Further, the diesel engine exhaust gas recovery soot fueling apparatus of the twelfth aspect of the invention is the diesel engine exhaust gas recovery soot fuel conversion apparatus of the eleventh aspect of the invention,
As a chemical solution, water added with a surfactant is used.
[0019]
The diesel engine exhaust gas recovery soot fueling apparatus of the thirteenth aspect of the invention is the diesel engine exhaust gas recovery soot fueling apparatus of the eleventh aspect of the invention,
The chemical solution is characterized in that a surfactant is added to water and an organic binder is added thereto.
[0020]
The diesel engine exhaust gas recovery soot fueling apparatus of the fourteenth aspect of the invention is the diesel engine exhaust gas recovery soot fuel conversion apparatus of the seventh, eighth, ninth, tenth, eleventh, twelfth or thirteenth aspect of the invention. In
A sieving means is provided after the granulating means, and the fuel granulated material obtained by the granulating means is screened by the sieving means to separate the non-defective product and the defective product, and the defective product is returned to the granulating means to be re-granulated It is characterized by comprising.
[0021]
The diesel engine exhaust gas recovery soot fueling device of the fifteenth aspect of the invention is the diesel engine exhaust gas recovery soot of the seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth or fourteenth aspect of the invention. In the fueling device,
A double opening / closing means is connected to the dust collecting means, and these opening / closing means are alternately opened / closed to discharge soot collected from the dust collecting means.
[0022]
Further, the diesel engine exhaust gas recovery soot fueling device of the sixteenth invention is the diesel engine exhaust gas of the seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth or fifteenth invention. In the soot fuel recovery system,
The conveying means for conveying the recovered soot discharged from the dust collecting means to the primary storage means, the kneading means or the granulating means is characterized in that it is covered and sealed.
[0023]
The diesel engine exhaust gas recovery soot fueling apparatus of the seventeenth aspect of the invention is the diesel engine exhaust gas recovery soot fueling apparatus of the sixteenth aspect of the invention,
N inside the sealed inside of the transport means ₂ Inert gas atmosphere or low O by replacing with inert gas such as gas ₂ It is characterized by having a concentration atmosphere.
[0024]
The diesel engine exhaust gas recovery soot fueling apparatus of the eighteenth invention is the diesel engine exhaust gas of the seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth or fifteenth invention. In the soot fuel recovery system,
The conveying means for conveying the recovered soot discharged from the dust collecting means to the primary storage means, kneading means or granulating means is an inert gas conveying device, and the inside is an inert gas atmosphere or low O ₂ As a closed circulation line configuration of a concentration atmosphere, the soot collected in the closed circulation line is transported.
[0025]
The diesel engine exhaust gas recovery soot fueling apparatus of the nineteenth aspect of the invention is the diesel engine exhaust gas recovery soot fueling apparatus of the sixteenth, seventeenth or eighteenth aspect of the invention,
The transporting means is provided with a cooling means, and the recovered soot transported by the transporting means is cooled by the cooling means.
[0026]
The diesel engine exhaust gas recovery soot fueling device of the twentieth invention is the seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth. In the fueling device for diesel engine exhaust gas recovery soot according to the eighteenth or nineteenth invention,
The fuel granulated material obtained by the granulating means is configured to be stored in a storage container, and after storing the fuel granulated material in the storage container, N is stored in the storage container. ₂ An inert gas such as gas is sealed and the inside of the storage container is filled with an inert gas atmosphere or low O ₂ It is characterized by having a configuration in which the storage container is hermetically sealed by covering with a concentration atmosphere.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0028]
FIG. 1 is a block diagram of a diesel engine exhaust gas recovery soot fueling device according to an embodiment of the present invention. As shown in the figure, the exhaust gas of the diesel engine 1 is discharged from the chimney 3 after the soot contained in the exhaust gas is collected and collected in the dust collector 2 as the dust collecting means. The diesel engine 1 is, for example, a stationary type with an output of 10 MW and an exhaust gas amount of 77000 m. ^Three N / h. As fuel for the diesel engine 1, A heavy oil or C heavy oil is generally used. As is well known, heavy oil is classified into 1, 2 and 3 types, and these are generally called A heavy oil, B heavy oil and C heavy oil.
[0029]
The dust collector 2 uses a ceramic filter. The amount of soot collected by the ceramic filter is, for example, 4.24 kg / h (212 liters / h) when A heavy oil is used as fuel for a diesel engine, and when C heavy oil is used as fuel for a diesel engine. For example, it becomes 7.70 kg / h (77.0 liter / h). The volume of generated soot differs between heavy fuel oil A and heavy fuel oil C because the amount of soot contained in the soot is small when heavy fuel oil A is used, soot bulk density is about 0.02 g / ml. On the other hand, when C heavy oil is used, soot contains a relatively large amount of impurities such as sulfur, so that the bulk density of soot becomes about 0.1 g / ml. Note that the dust collector 2 is not necessarily limited to a ceramic filter, and the fuelizer of the present embodiment is also used when soot collected by another type of dust collector such as an electric dust collector is used as fuel. Can be applied.
[0030]
And in the fueling apparatus of this Embodiment, the fuel conversion process of the collection | recovery of soot is performed in order of a primary storage process, a kneading | mixing process, a granulation process, a sieving process, and a fuel storage process.
[0031]
More specifically, the soot collected by the dust collector 2 is discharged to a transport device 5 as a transport means through a double gate valve 4a, 4b which is one of open / close means connected to the dust collector 2. The transport device 5 transports the primary storage tank 6 as a primary storage means. Then, the soot collected once is stored in the primary storage tank 6. At this time, by alternately opening and closing the double gate valves 4a and 4b, the exhaust gas is completely sealed to reliably prevent the exhaust gas from leaking to the fuelizer side. That is, first, the gate valve 4a is opened with the gate valve 4b closed, and the collected soot is discharged from the dust collector 2. Subsequently, after the gate valve 4 a is closed, the gate valve 4 b is opened and the collected soot is discharged to the transfer device 5. Thereafter, the same operation is repeated. The opening / closing means may be a rotary valve or the like without being limited to the gate valve.
[0032]
As the transport device 5, a flight conveyor is used. For example, the transport distance is 100 m and the transport speed is 5 m / min. As is well known, a flight conveyor is a mechanical transport device in which a plurality of plates are attached to a circulation drive means such as a chain, and transports while pushing collected soot by these plates. The flight conveyor should be covered and sealed completely. Thus, by making the flight conveyor completely sealed, it is possible to prevent the dust collected during the transportation from coming into contact with the air and the occurrence of a dust explosion or a fire due to spontaneous oxidation (spontaneous ignition). In order to more reliably prevent this dust explosion and spontaneous combustion, the sealed interior of the flight conveyor must be ₂ Inert gas atmosphere or low O by replacing with inert gas such as gas ₂ A concentration atmosphere is desirable.
[0033]
Further, by making the vicinity of the collected soot discharge part (upstream part of the flight conveyor) of the flight conveyor a water jacket type, for example, 300 to 400 at the time when the water is discharged from the dust collector 2 by the cooling water flowing through the water jacket. The recovered soot having a high temperature of about 0 ° C. is cooled to a temperature at which no spontaneous oxidation exotherm occurs, preferably 60 ° C. or less. Thus, the soot dust explosion and spontaneous ignition are prevented by lowering the temperature of soot. In addition, as a cooling means, it is not necessarily limited to a water jacket, Other things may be used. For example, a cooling fin may be attached to the outside of the flight conveyor to dissipate heat (air cooling). In some cases, natural heat dissipation may be used.
[0034]
Further, as the transport device 5, an air transport device that sucks and transports the collected soot with a blower may be used. In this case, the conveyance speed is, for example, about 20 m / sec. Also in this case, preferably in order to more reliably prevent soot dust explosion and spontaneous ignition, N is used instead of air as the carrier gas. ₂ An inert gas such as a gas is used. That is, it is desirable to use an inert gas transfer device instead of an air transfer device. Moreover, a closed circulation line configuration is used, and the inside of this circulation line is an inert gas atmosphere or low O. ₂ Concentration atmosphere. Then, the recovered soot is transported in this closed circulation line. In this case also, cooling means such as a water jacket and cooling fins may be provided to cool the collected soot.
[0035]
The storage capacity of the recovered soot in the primary storage tank 6 is 5.1 m, for example. ^Three And The primary storage tank 6 is installed in order to stably supply the recovered soot to a subsequent process such as the kneader 9. In order to prevent the soot dust explosion and spontaneous ignition in the primary storage tank 6 reliably, the inside of the primary storage tank 6 is N ₂ Inert gas atmosphere or low O by replacing with inert gas such as gas ₂ A concentration atmosphere is desirable. Further, the primary storage tank 6 may be provided with a bag filter for gas-solid separation. Also in this case, the inside of the primary storage tank 6 is N ₂ Inert gas atmosphere or low O by replacing with inert gas such as gas ₂ It is desirable to prevent soot dust explosion and spontaneous ignition by using a concentration atmosphere.
[0036]
Further, when a temperature detector is provided in the primary storage tank 6 and it is detected by the temperature detector that the internal temperature of the primary storage tank 6 has abnormally increased to a predetermined value or more, the gas supply device ₂ An inert gas such as a gas is supplied to the inside of the primary storage tank 6, and the inside of the primary storage tank 6 is filled with an inert gas atmosphere or low O ₂ A concentration atmosphere may be used. This also prevents the soot dust explosion and spontaneous ignition from occurring.
[0037]
The collected soot stored in the primary storage tank 6 is cut out in a predetermined volume (for example, 375 liters (one batch)) by the cutting device 7, and is transported by the transport device 8 as necessary, and the kneading device 9 as a kneading means. To supply.
[0038]
A table feeder is used as the cutting device 7. As is well known, a table feeder is a kind of a quantitative supply device that is provided under a storage tank and cuts out a predetermined amount while rotating. The cutting speed of the collected soot by the cutting apparatus 7 is set to 0.75 kg / min, for example. Further, the cutting by the cutting device 7 is performed after confirming that a predetermined amount or more of collected soot is stored in the primary storage tank 6 by a level detector. As the level detector, a paddle type (blade type) switch or a vibration type switch is used. Further, the cutting device 7 is not limited to a table feeder, and a screw feeder or a rotary feeder may be used. When cutting out the collected soot, it may be cut out while measuring with an impact flow meter.
[0039]
When there is a distance between the primary storage tank 6 and the kneading device 9, a transfer device 8 is provided between the two, and the recovered soot cut out from the primary storage tank 8 is provided to the kneading device 9 by the transfer device 8. Transport. In this case, a flight conveyor or the like is used as the transport device 8. When the primary storage tank 6 and the kneading apparatus 9 are close to each other, the recovered soot cut out from the primary storage tank 6 may be directly supplied to the kneading apparatus 9.
[0040]
As the kneading device 9, a muller wheel type kneading device is used. In this kneading apparatus 9, the recovered soot supplied from the primary storage tank 6 for each batch is kneaded for a certain period of time using the chemical solution supplied from the chemical solution supply tank 10. The soot amount per batch processed by the kneading apparatus 9 is, for example, 7.5 kg, and the soot supply speed to the kneading apparatus 9 is, for example, 0.75 kg / min. The kneading time is, for example, about 20 minutes.
[0041]
Water is used as the chemical solution. The addition amount of the chemical solution is set so that the weight ratio of the chemical solution becomes soot: chemical solution = 100: 50 when soot is added. Moreover, you may use as a chemical | medical solution which added surfactant to water. In this case, for example, 1% by weight of surfactant is added to the weight of water. By adding the surfactant, the mixing of moisture and soot is accelerated, so that the kneading time can be shortened. The kneading time in this case is about 15 minutes, for example. For this reason, running cost can be reduced, and the speed of wear of the kneading apparatus 9 caused by kneading can also be reduced. Moreover, you may use what added the organic binder to what added surfactant to this water as a chemical | medical solution. In this case, for example, 1% by weight of a surfactant is added to the weight of water, and for example, 3% by weight of lignin is added to the weight of soot kneaded therein. In this case, the surfactant can reduce the kneading time to about 15 minutes, and in addition to adding lignin, fuel pellets obtained by granulating soot recovered in the subsequent granulation step (fuel granulated product) ) Is improved, so that damage or the like during transportation of the fuel pellets can be suppressed.
[0042]
Further, as the kneading device 9, a biaxial kneader may be used. In this case, the recovered soot and the chemical solution are continuously supplied to the biaxial kneader and continuously kneaded. The supply rate of the collected soot at this time is set to 100 kg / h, for example.
[0043]
The recovered soot kneaded by the kneading device 9 is conveyed to a granulating device 12 as a granulating means by a conveying device 11 such as a belt conveyor. As the granulator 12, a briquetting roll (compression molding machine) is used. This granulator 12 operates in response to the discharge of the soot collected after kneading from the kneader 9 and starts granulating it immediately after the recovered soot after kneading is supplied. As a result, a briquette fuel pellet having a vertical and horizontal dimension of 17 mm × 27 mm and a thickness of 9 mm is obtained as a granulated product of the collected soot. Moreover, the granulation speed at this time shall be 100 kg / h, for example.
[0044]
Moreover, as the granulator 12, you may use a screw type extrusion molding machine. In this case, rod-shaped fuel pellets having a diameter and a length of φ20 mm × 50 mm are obtained as the granulated material of the collected soot. Further, a screw type extruder is used as the granulating device 12 and a biaxial kneader is used as the kneading device 9, and the biaxial kneader and the screw type extruder are integrated to perform kneading and granulation continuously. You may do it. In this case, rod-shaped fuel pellets having a diameter and a length of φ20 mm × 50 mm are obtained as the granulated material of the collected soot. Further, the soot cutting speed in the cutting device 7, the soot supply speed in the screw-type extrusion molding machine, and the soot granulation speed in the biaxial kneader are, for example, 10 kg / h.
[0045]
The fuel pellets granulated by the granulating device 12 are conveyed by the conveying device 13 to the sieving device 14 as sieving means. A bucket conveyor or the like is used as the transport device 13. Further, a vibrating screen is used as the sieving device 14. In the sieving device 14, the fuel pellets supplied from the granulating device 12 are sieved and separated into good and defective products. The defective fuel pellets are returned to the previous granulating device 12 by the conveying device 13 such as a belt conveyor and re-granulated, and only the non-defective fuel pellets are supplied to the subsequent fuel storage device 16.
[0046]
The fuel storage device 16 stores fuel pellets in a storage container. When it is desired to reduce the moisture contained in the fuel pellets, hot air is supplied from the side surface of the storage container with a blower or the like to dry the fuel pellets. On the other hand, if it is not necessary to reduce the amount of water, the fuel pellets may be left in the storage container and allowed to dry naturally. In addition, after storing fuel pellets in the storage container, if necessary, put N in the storage container. ₂ An inert gas such as gas is enclosed and the inside of the storage container is filled with an inert gas atmosphere or low O ₂ The storage container may be hermetically sealed in a concentration atmosphere. This can prevent the fuel pellet from spontaneously igniting in the storage container. The storage container has a shape that can be conveyed by a forklift. Then, for example, the fuel pellets are transported together with the storage container to the container with a forklift, packed in the container, and then transported.
[0047]
The above apparatus configuration is the case where A heavy oil is used as the fuel of the diesel engine. The physical property value of the fuel pellet produced by this fueling apparatus is, for example, a true calorific value of 6588 kcal / kg when hot air drying is performed. The ash content (dry) is 6.3%, the bulk density is 0.61 g / ml, the moisture content is 1%, the crushing strength is 5 kg / unit. In the case of natural drying, for example, the true calorific value is 3996 kcal / kg, the ash content is 6.3%, bulk density 0.61 g / ml, moisture 36.7%, crushing strength 5 kg / piece. Further, when lignin is added to the chemical solution, the crushing strength is improved to, for example, 7 kg / piece.
[0048]
On the other hand, when C heavy oil is used as a diesel engine fuel, the recovered soot contains some impurities such as sulfur, so the recovered soot can be granulated without adding a chemical as a binder and kneading. Can do. For this reason, when C heavy oil is used, the kneading step may be omitted. That is, the recovered soot cut out from the primary storage tank 6 by the cutting device 7 is granulated by the granulating device 12 as it is. In this case, for example, the granulator 12 is granulated at a granulation speed of 10 kg / h using a biaxial roll type extrusion molding machine to produce a rectangular plate-like fuel pellet having a side dimension of 10 mm to 30 mm. . The physical properties of the fuel pellets at this time are, for example, a true calorific value of 4880 kcal / kg, an ash content of 25.1%, a bulk density of 0.61 g / ml, a moisture content of 1%, and a crushing strength of 5 kg / piece. Moreover, you may add the kneading | mixing process which adds water or a chemical | medical solution for crushing strength improvement.
[0049]
And according to this Embodiment, since the collected soot is made into fuel, the following effects are acquired.
(1) Recovered soot that has been treated as industrial waste or heat-treated with a heater can be effectively used as fuel. The fuel pellets can be applied to a) burning in a coal-fired boiler (injecting into a coal mill), b) burning in a cement manufacturing or metal refining revolving kiln (in this case, large fuel pellets are used) ), Etc.
(2) The processing cost of collecting soot can be reduced.
(3) Storage and transportation costs can be reduced by reducing the volume of collected soot.
(4) Safety during handling and storage of collected soot can be ensured.
[0050]
【The invention's effect】
As described above in detail with reference to the embodiments of the invention, the method of converting the soot collected from diesel engine exhaust gas according to the first invention to soot collected by the dust collecting means from the exhaust gas of the diesel engine It is characterized in that a fuel granulated product is obtained by discharging from the gas and granulating with a granulating means.
[0051]
Therefore, according to the diesel engine exhaust gas recovery soot fueling method of the first invention, since the recovered soot is converted into fuel, the following effects can be obtained.
(1) Recovered soot that has been treated as industrial waste or heat-treated with a heater can be effectively used as fuel.
(2) The processing cost of collecting soot can be reduced.
(3) Storage and transportation costs can be reduced by reducing the volume of collected soot.
(4) Safety during handling and storage of collected soot can be ensured.
[0052]
The diesel engine exhaust gas recovery soot fueling method of the second invention is the diesel engine exhaust gas recovery soot fueling method of the first invention,
A primary storage process for primarily storing the recovered soot discharged from the dust collecting means;
And a granulating step of granulating the collected soot collected by a granulating means to obtain a fuel granulated product.
[0053]
Therefore, according to the diesel engine exhaust gas recovery soot fueling method of the second aspect of the present invention, the recovered soot can be supplied to the subsequent process by stably storing the recovered soot.
[0054]
The diesel engine exhaust gas recovery soot fueling method of the third invention is the diesel engine exhaust gas recovery soot fueling method of the first or second invention,
There is a kneading step before the granulation step. In this kneading step, the recovered soot is kneaded with water or a chemical solution as a binder by a kneading means, and the kneaded recovered soot is granulated in the granulation step to produce fuel. It is characterized by obtaining granules.
[0055]
Therefore, according to the diesel engine exhaust gas recovery soot fueling method of the third aspect of the invention, since the recovery soot is kneaded using water or chemicals, the recovery is performed even when A heavy oil is used as the fuel for the diesel engine. Can be fueled.
[0056]
The diesel engine exhaust gas recovery soot fueling method of the fourth invention is a diesel engine exhaust gas recovery soot fueling method of the third invention,
As the chemical solution, a solution obtained by adding a surfactant to water is used.
[0057]
Therefore, according to the diesel engine exhaust gas recovery soot fueling method of the fourth aspect of the invention, since the soot is mixed with water quickly by kneading the recovered soot using the chemical solution to which the surfactant is added, Time can be shortened. For this reason, running cost can be reduced and the speed of wear of the kneading means caused by kneading can also be reduced.
[0058]
The diesel engine exhaust gas recovery soot fueling method of the fifth invention is a diesel engine exhaust gas recovery soot fueling method of the third invention,
A chemical solution is characterized by using a surfactant added to water and an organic binder added thereto.
[0059]
Therefore, according to the diesel engine exhaust gas recovery soot fueling method of the fifth aspect of the present invention, the fuel granulation obtained in the subsequent granulation step by kneading the recovered soot using a chemical solution to which an organic binder has been added. Since the strength of the product is improved, it is possible to suppress damage or the like during transportation of the fuel granulated product.
[0060]
The diesel engine exhaust gas recovery soot fueling method of the sixth invention is the diesel engine exhaust gas recovery soot fueling method of the first, second, third, fourth or fifth invention,
There is a sieving process after the granulation process. In this sieving process, the fuel granulated material obtained in the granulation process is sieved to separate it into good and defective products, and the defective products are returned to the previous granulation process and recycled. It is characterized by granulation.
[0061]
Therefore, according to the diesel engine exhaust gas recovery soot fueling method of the sixth aspect of the present invention, the fuel granulated material is sieved to separate the non-defective product from the non-defective product, and the defective product is returned to the previous granulation step and regenerated. Therefore, a good fuel granulated product can be obtained reliably and efficiently.
[0062]
According to a seventh aspect of the present invention, there is provided a fueling device for collecting diesel engine exhaust gas soot from a diesel engine by collecting dust from the exhaust gas of the diesel engine by discharging it from the dust collecting means and granulating it by the granulating means. It is characterized by being configured to obtain a granulated product.
[0063]
Therefore, according to the seventh aspect of the present invention, the diesel engine exhaust gas recovery soot fueling apparatus converts the recovered soot into fuel, so that the following effects can be obtained.
(1) Recovered soot that has been treated as industrial waste or heat-treated with a heater can be effectively used as fuel.
(2) The processing cost of collecting soot can be reduced.
(3) Storage and transportation costs can be reduced by reducing the volume of collected soot.
(4) Safety during handling and storage of collected soot can be ensured.
[0064]
The diesel engine exhaust gas recovery soot fueling apparatus of the eighth invention is a diesel engine exhaust gas recovery soot fueling apparatus of the seventh invention,
Primary storage means for primarily storing the recovered soot discharged from the dust collection means;
And a granulating means for obtaining a fuel granulated material by granulating the collected soot collected in the primary storage mode.
[0065]
Therefore, according to the diesel engine exhaust gas recovery soot fueling apparatus of the eighth aspect of the invention, the recovered soot can be supplied to the subsequent stage by stably storing the recovered soot.
[0066]
The diesel engine exhaust gas recovery soot fueling apparatus of the ninth invention is the diesel engine exhaust gas recovery soot fueling apparatus of the eighth invention,
The inside of the primary storage means is N ₂ Inert gas atmosphere or low O by replacing with inert gas such as gas ₂ It is characterized by having a concentration atmosphere.
[0067]
Therefore, according to the diesel engine exhaust gas recovery soot fueling apparatus of the ninth aspect of the present invention, dust explosion and spontaneous ignition of recovered soot in the primary storage means can be prevented.
[0068]
Further, the diesel engine exhaust gas recovery soot fueling apparatus of the tenth invention is the diesel engine exhaust gas recovery soot fueling apparatus of the eighth invention,
When a temperature detector is provided in the primary storage means, and it is detected by this temperature detector that the internal temperature of the primary storage means has abnormally increased to a predetermined value or more, the gas supply means ₂ An inert gas such as a gas is supplied to the inside of the primary storage means, and the inside of the primary storage means is inert gas atmosphere or low O ₂ It is characterized by having a concentration atmosphere.
[0069]
Therefore, according to the diesel engine exhaust gas recovery soot fueling device of the tenth aspect of the present invention, dust explosion and spontaneous ignition of recovered soot in the primary storage means can be prevented.
[0070]
The diesel engine exhaust gas recovery soot fueling apparatus of the eleventh aspect of the invention is the diesel engine exhaust gas recovery soot fueling apparatus of the seventh, eighth, ninth or tenth invention,
A kneading means is provided in front of the granulating means, soot collected by the kneading means is kneaded using water or a chemical solution as a binder, and the kneaded recovered soot is granulated by the granulating means to obtain a fuel granulated product. It is configured as described above.
[0071]
Therefore, according to the diesel engine exhaust gas recovery soot fueling device of the eleventh aspect of the invention, since the recovered soot is kneaded using water or chemicals, the recovery is performed even when A heavy oil is used as the fuel for the diesel engine. Can be fueled.
[0072]
Further, the diesel engine exhaust gas recovery soot fueling apparatus of the twelfth aspect of the invention is the diesel engine exhaust gas recovery soot fuel conversion apparatus of the eleventh aspect of the invention,
As a chemical solution, water added with a surfactant is used.
[0073]
Therefore, according to the diesel engine exhaust gas recovery soot fueling device of the twelfth aspect of the present invention, kneading of the recovered soot using the chemical solution to which the surfactant has been added speeds up the mixing of water with the soot. Time can be shortened. For this reason, running cost can be reduced and the speed of wear of the kneading means caused by kneading can also be reduced.
[0074]
The diesel engine exhaust gas recovery soot fueling apparatus of the thirteenth aspect of the invention is the diesel engine exhaust gas recovery soot fueling apparatus of the eleventh aspect of the invention,
The chemical solution is characterized in that a surfactant is added to water and an organic binder is added thereto.
[0075]
Therefore, according to the diesel engine exhaust gas recovery soot fueling apparatus of the thirteenth aspect of the invention, the fuel granulation obtained in the subsequent granulation step by kneading the recovered soot using the chemical solution to which the organic binder has been added. Since the strength of the product is improved, it is possible to suppress damage or the like during transportation of the fuel granulated product.
[0076]
The diesel engine exhaust gas recovery soot fueling apparatus of the fourteenth aspect of the invention is the diesel engine exhaust gas recovery soot fuel conversion apparatus of the seventh, eighth, ninth, tenth, eleventh, twelfth or thirteenth aspect of the invention. In
A sieving means is provided after the granulating means, and the fuel granulated material obtained by the granulating means is screened by the sieving means to separate the non-defective product and the defective product, and the defective product is returned to the granulating means to be re-granulated It is characterized by comprising.
[0077]
Therefore, according to the diesel engine exhaust gas recovery soot fueling apparatus of the fourteenth aspect of the present invention, the fuel granulated material is sieved to separate the non-defective product from the non-defective product, and the defective product is returned to the previous granulation step and regenerated. Therefore, a good fuel granulated product can be obtained reliably and efficiently.
[0078]
The diesel engine exhaust gas recovery soot fueling device of the fifteenth aspect of the invention is the diesel engine exhaust gas recovery soot of the seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth or fourteenth aspect of the invention. In the fueling device,
A double opening / closing means is connected to the dust collecting means, and these opening / closing means are alternately opened / closed to discharge soot collected from the dust collecting means.
[0079]
Therefore, according to the diesel engine exhaust gas recovery soot fueling apparatus of the fifteenth aspect of the invention, the exhaust gas can be sealed to prevent the exhaust gas from leaking to the fueling apparatus side.
[0080]
Further, the diesel engine exhaust gas recovery soot fueling device of the sixteenth invention is the diesel engine exhaust gas of the seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth or fifteenth invention. In the soot fuel recovery system,
The conveying means for conveying the recovered soot discharged from the dust collecting means to the primary storage means, the kneading means or the granulating means is characterized in that it is covered and sealed.
[0081]
Therefore, according to the diesel engine exhaust gas recovery soot fueling device of the sixteenth aspect of the present invention, it is possible to prevent dust explosion and spontaneous ignition from occurring due to contact with the soot recovered during transportation.
[0082]
The diesel engine exhaust gas recovery soot fueling apparatus of the seventeenth aspect of the invention is the diesel engine exhaust gas recovery soot fueling apparatus of the sixteenth aspect of the invention,
N inside the sealed inside of the transport means ₂ Inert gas atmosphere or low O by replacing with inert gas such as gas ₂ It is characterized by having a concentration atmosphere.
[0083]
Therefore, according to the diesel engine exhaust gas recovery soot fueling device of the seventeenth aspect of the present invention, dust explosion and spontaneous ignition of recovered soot during transportation can be more reliably prevented.
[0084]
The diesel engine exhaust gas recovery soot fueling apparatus of the eighteenth invention is the diesel engine exhaust gas of the seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth or fifteenth invention. In the soot fuel recovery system,
The conveying means for conveying the recovered soot discharged from the dust collecting means to the primary storage means, kneading means or granulating means is an inert gas conveying device, and the inside is an inert gas atmosphere or low O ₂ As a closed circulation line configuration of a concentration atmosphere, the soot collected in the closed circulation line is transported.
[0085]
Therefore, according to the diesel engine exhaust gas recovery soot fueling device of the eighteenth aspect of the present invention, dust explosion and spontaneous ignition of recovered soot during transportation can be reliably prevented.
[0086]
The diesel engine exhaust gas recovery soot fueling apparatus of the nineteenth aspect of the invention is the diesel engine exhaust gas recovery soot fueling apparatus of the sixteenth, seventeenth or eighteenth aspect of the invention,
The transporting means is provided with a cooling means, and the recovered soot transported by the transporting means is cooled by the cooling means.
[0087]
Therefore, according to the diesel engine exhaust gas recovery soot fueling apparatus of the nineteenth aspect of the present invention, by reducing the temperature of the recovered soot, dust explosion and spontaneous ignition of the recovered soot can be prevented.
[0088]
The diesel engine exhaust gas recovery soot fueling device of the twentieth invention is the seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth. In the fueling device for diesel engine exhaust gas recovery soot according to the eighteenth or nineteenth invention,
The fuel granulated material obtained by the granulating means is configured to be stored in a storage container, and after storing the fuel granulated material in the storage container, N is stored in the storage container. ₂ An inert gas such as gas is sealed and the inside of the storage container is filled with an inert gas atmosphere or low O ₂ It is characterized by having a configuration in which the storage container is hermetically sealed by covering with a concentration atmosphere.
[0089]
Therefore, according to the diesel engine exhaust gas recovery soot fueling apparatus of the twentieth aspect of the present invention, it is possible to prevent spontaneous combustion of the fuel granulated material in the storage container.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a diesel engine exhaust gas recovery soot fueling device according to an embodiment of the present invention.
[Explanation of symbols]
1 Diesel engine
2 Dust collector
3 Chimney
4 Gate valve
5 Transport device
6 Primary storage tank
7 Cutting device
8 Transport device
9 Kneading equipment
10 Chemical tank
11 Transport device
12 Granulator
13 Transport device
14 Sieve device
15 Transport device
16 Fuel storage device

Claims (20)

Diesel engine exhaust gas recovery soot fuel characterized by obtaining soot collected from exhaust gas of diesel engine by dust collecting means and discharging from dust collection means and granulating by granulation means Method. In the method of fuelizing diesel engine exhaust gas recovery soot according to claim 1,
A primary storage process for primarily storing the recovered soot discharged from the dust collecting means;
A method for converting diesel engine exhaust gas recovered soot into a fuel, comprising: a granulating step of granulating the primary stored recovered soot by a granulating means to obtain a fuel granulated product. In the method of fuelizing diesel engine exhaust gas recovery soot according to claim 1 or 2,
There is a kneading step before the granulation step. In this kneading step, the recovered soot is kneaded with water or a chemical solution as a binder by a kneading means, and the kneaded recovered soot is granulated in the granulation step to produce fuel. A diesel engine exhaust gas recovery soot fueling method characterized by obtaining particulate matter. The diesel engine exhaust gas recovery soot fuelization method according to claim 3,
A diesel fuel exhaust method for recovering exhaust gas from a diesel engine, wherein a chemical solution obtained by adding a surfactant to water is used as the chemical solution. The diesel engine exhaust gas recovery soot fuelization method according to claim 3,
A diesel fuel exhaust method for recovering exhaust gas from a diesel engine, comprising using a surfactant added to water and an organic binder as a chemical solution. In the method of fuelizing diesel engine exhaust gas recovery soot according to claim 1, 2, 3, 4 or 5,
There is a sieving process after the granulation process. In this sieving process, the fuel granulated material obtained in the granulation process is sieved to separate it into good and defective products, and the defective products are returned to the previous granulation process and recycled. A diesel engine exhaust gas recovery soot fueling method characterized by granulating. Diesel engine exhaust gas characterized in that soot collected from the exhaust gas of the diesel engine by the dust collecting means is discharged from the dust collecting means and granulated by the granulating means to obtain a fuel granulated product Recovered soot fueling device. The diesel engine exhaust gas recovery soot fueling device according to claim 7,
Primary storage means for primarily storing the recovered soot discharged from the dust collection means;
A diesel engine exhaust gas recovery soot fueling apparatus, comprising: granulation means for granulating the primary stored recovered soot to obtain a fuel granulated product. The diesel engine exhaust gas recovery soot fueling device according to claim 8,
A diesel engine exhaust gas recovery soot fueling device characterized in that the interior of the primary storage means is replaced with an inert gas such as N ₂ gas to create an inert gas atmosphere or a low O ₂ concentration atmosphere. The diesel engine exhaust gas recovery soot fueling device according to claim 8,
A temperature detector is provided in the primary storage means, and when this temperature detector detects that the internal temperature of the primary storage means has abnormally increased to a predetermined value or higher, an inert gas such as N ₂ gas is supplied to the primary storage means by the gas supply means. A diesel engine exhaust gas recovery and soot fueling apparatus characterized in that the inside of the primary storage means is supplied to the inside of the storage means so as to have an inert gas atmosphere or a low O ₂ concentration atmosphere. In the diesel engine exhaust gas recovery soot fuelizing device according to claim 7, 8, 9, or 10,
A kneading means is provided in front of the granulating means, soot collected by the kneading means is kneaded using water or a chemical solution as a binder, and the kneaded recovered soot is granulated by the granulating means to obtain a fuel granulated product. A diesel engine exhaust gas recovery soot fueling device, characterized in that it is configured as described above. The diesel engine exhaust gas recovery soot fueling device according to claim 11,
A diesel engine exhaust gas recovery soot fueling device characterized in that a chemical solution obtained by adding a surfactant to water is used as a chemical solution. The diesel engine exhaust gas recovery soot fueling device according to claim 11,
A diesel engine exhaust gas recovery fueling device characterized in that a surfactant is added to water and an organic binder is added thereto as a chemical solution. The diesel engine exhaust gas recovery soot fuelizing device according to claim 7, 8, 9, 10, 11, 12, or 13,
A sieving means is provided after the granulating means, and the fuel granulated material obtained by the granulating means is screened by the sieving means to separate the non-defective product and the defective product, and the defective product is returned to the granulating means to be re-granulated. A diesel engine exhaust gas recovery soot fueling device characterized by comprising: The diesel engine exhaust gas recovery soot fuelizing apparatus according to claim 7, 8, 9, 10, 11, 12, 13 or 14,
Diesel engine exhaust gas recovered soot fuel characterized in that double open / close means are connected to the dust collecting means, and these open / close means are alternately opened and closed to discharge the soot collected from the dust collecting means. Device. The diesel engine exhaust gas recovery soot fuelizing apparatus according to claim 7, 8, 9, 10, 11, 12, 13, 14, or 15.
The transporting means for transporting the recovered soot discharged from the dust collecting means to the primary storage means, the kneading means or the granulating means is covered with a cover so as to be sealed and made into fuel for diesel engine exhaust gas recovery soot apparatus. The diesel engine exhaust gas recovery soot fueling device according to claim 16,
A diesel engine exhaust gas recovery soot fueling device characterized in that the inside of the conveying means is replaced with an inert gas such as N ₂ gas to form an inert gas atmosphere or a low O ₂ concentration atmosphere. The diesel engine exhaust gas recovery soot fuelizing apparatus according to claim 7, 8, 9, 10, 11, 12, 13, 14, or 15.
The conveying means for conveying the recovered soot discharged from the dust collecting means to the primary storage means, kneading means or granulating means is an inert gas conveying device, and the inside is sealed with an inert gas atmosphere or a low O ₂ concentration atmosphere. A diesel engine exhaust gas recovery soot fueling device characterized in that the recovery soot is transported in the closed circulation line as a circulation line configuration. The diesel engine exhaust gas recovery soot fuelizing apparatus according to claim 16, 17 or 18,
A diesel engine exhaust gas recovery soot fueling apparatus, characterized in that a cooling means is provided in the transport means, and the recovered soot transported by the transport means is cooled by the cooling means. The diesel engine exhaust gas recovery soot fuelizing apparatus according to claim 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, or 19.
The fuel granulated material obtained by the granulating means is configured to be stored in a storage container. After storing the fuel granulated material in the storage container, the storage container is filled with an inert gas such as N ₂ gas and stored. A diesel fuel exhaust gas recovery device comprising a container having an inert gas atmosphere or a low O ₂ concentration atmosphere, and a storage container sealed with a cover.

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