WO2006082823A1 - 固体燃料ガス化装置およびガス化方法 - Google Patents
固体燃料ガス化装置およびガス化方法 Download PDFInfo
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- WO2006082823A1 WO2006082823A1 PCT/JP2006/301618 JP2006301618W WO2006082823A1 WO 2006082823 A1 WO2006082823 A1 WO 2006082823A1 JP 2006301618 W JP2006301618 W JP 2006301618W WO 2006082823 A1 WO2006082823 A1 WO 2006082823A1
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- solid fuel
- water
- gasification furnace
- gas
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/485—Entrained flow gasifiers
- C10J3/487—Swirling or cyclonic gasifiers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
- C10J3/506—Fuel charging devices for entrained flow gasifiers
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2200/00—Details of gasification apparatus
- C10J2200/15—Details of feeding means
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0903—Feed preparation
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0903—Feed preparation
- C10J2300/0909—Drying
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/18—Details of the gasification process, e.g. loops, autothermal operation
- C10J2300/1807—Recycle loops, e.g. gas, solids, heating medium, water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/30—Pyrolysing
- F23G2201/301—Treating pyrogases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/40—Gasification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2201/00—Pretreatment
- F23G2201/80—Shredding
Definitions
- the present invention relates to a gasification apparatus and a gasification method in which a solid fuel such as coal is conveyed in a gas stream using a carrier gas, is introduced into a gasification furnace, and is gasified by reacting with a gasifying agent.
- Gasification apparatuses that gasify solid fuels mainly composed of hydrocarbons, such as coal and plastic waste, use various gasification furnaces such as a fixed bed, a fluidized bed, or a gas flow bed. is there.
- the gasification furnace which is referred to as the gas-flow layer method, can be operated at high temperatures ranging from 1000 ° C to 1500 ° C, and has the advantage of high conversion efficiency from solid fuel to gas.
- solid fuel is suspended in the furnace and gasified in contact with the gasifying agent. For this reason, it may be called a spouted bed system.
- a solid fuel is usually entrained in a carrier gas, or a slurry of solid fuel and water is charged into the gasification furnace.
- the solid fuel is transported to the gasification furnace by airflow and has the advantage that the amount of heat generated from the generated gas is increased because moisture is not supplied to the gasification furnace.
- a gasification apparatus that transports solid fuel in an air stream and puts it into a gasification furnace of an airflow layer type, collects solid matter discharged from the gasification furnace with the generated gas, and supplies it again to the gasification furnace
- methods include the methods described below.
- One is a method of collecting solid matter using a cyclone or filter and returning it to the gasification furnace via a lock hopper (see, for example, Patent Document 1), and one is collecting solid matter using a gas scrubber.
- the slurry is directly supplied to the gasifier (see, for example, Patent Document 2).
- Patent Document 1 Japanese Patent Application Laid-Open No. 2000-328074 (paragraph number 0013)
- Patent Document 2 JP 2003-231888 (Claims)
- the method of recovering solid matter discharged to the outside of the gasification furnace and returning it to the gasification furnace via the lock hopper is a method of generating a calorific value of the generated gas as compared with a method of supplying it to the gasification furnace as a slurry.
- Higher power S Higher capacity Lock hopper is required.
- the method of supplying the gasification furnace with the slurry does not require a lock hopper, but the generated gas has a low calorific value because moisture is supplied to the gasification furnace.
- An object of the present invention is to provide a gasification apparatus for supplying a solid fuel transported in an air current to a gasification furnace of an air current layer system, without requiring a lock hopper and making a recovered solid matter without using a slurry.
- the purpose is to enable resupply to the gasifier.
- the first of the present invention is to bring the product gas discharged from the gas-flow-type gasification furnace out of the furnace directly into contact with water, and recover a solid substance such as a chia entrained in the product gas.
- the mixture of the collected solid material and water is dehydrated and then put into a solid fuel reservoir or solid fuel duster.
- the gasification device of the present invention includes at least water in the product gas. There is a solid material recovery device that directly contacts each other.
- the gasifier of the present invention is provided with a dehydrator. For this reason, it is desirable that the solid and water mixture dehydrated and gelled by the dehydrator is then dried and put into a force solid fuel reservoir or solid fuel crusher. It is desirable that the converter is equipped with a dryer.
- a dryer is not necessarily required when the collected solid material is put into a solid fuel pulverizer, but it is desirable that a dryer be provided and dried before being put into a solid fuel storage device. .
- the water is discharged by dehydrating the mixture of the solid and water with a dehydrator. It is desirable to return to the water contact recovery device and reuse it. In this case, it is desirable to install a water treatment device and remove the salt and chia contained in the separated water before returning it to the water contact type recovery device. By returning the water separated by the dehydrator to the water contact recovery device and reusing it, it can be reused in the gasification system, and the amount of water used and the amount of discharged wastewater can be reduced. .
- a solid fuel finely pulverized in a gasification furnace is reacted with oxygen or air to generate a gas mainly composed of hydrogen and carbon monoxide, and then moved out of the gasification furnace.
- the particulate matter in the discharged product gas is collected by the collector using the collected liquid, and the slurry of the collected liquid and the particulate matter is extracted from the bottom of the collector and placed in the gasifier. It is to supply.
- the collector is a container into which the product gas is introduced, a collection means for bringing the product gas and the liquid into contact with each other in the container, and collecting particulate matter in the product gas, and stays at the bottom of the container. It is preferable to include a stirrer that stirs the collected liquid.
- the granular material in the product gas is captured by the liquid, falls to the bottom of the collector, and stays as the collected liquid.
- a slurry in which the granular material is dispersed in the liquid is generated.
- the granular material trapped in the liquid falls to the bottom of the container and is dispersed in the liquid by stirring, aggregation of the granular material can be suppressed.
- the particles can be efficiently gasified and the carbon conversion rate can be improved.
- a means for collecting the granular material there are a method in which a liquid is sprayed on the generated gas, a method in which the generated gas is applied to a wet wall, a method in which the generated gas is allowed to flow in the liquid, and the like.
- the gasification furnace may be a two-stage gasification furnace in which the upper and lower stages are arranged with a panner, and the burner may be arranged in a tangential direction of the gasification furnace so that the generated gas forms a swirling flow.
- FIG. 1 is a block diagram showing a first embodiment of a gasifier according to the present invention.
- FIG. 2 is a block diagram showing a second embodiment of the gasifier according to the present invention.
- FIG. 3 is a block diagram showing a third embodiment of the gasifier according to the present invention.
- FIG. 4 is a block diagram showing a fourth embodiment of the gasifier according to the present invention.
- FIG. 5 is a block diagram showing a fifth embodiment of the gasifier according to the present invention.
- FIG. 6 is a block diagram showing a sixth embodiment of the gasifier according to the present invention.
- FIG. 7 is a block diagram showing a seventh embodiment of the gasifier according to the present invention.
- FIG. 8 is a block diagram showing an eighth embodiment of the gasifier according to the present invention.
- FIG. 9 is a conceptual diagram showing an example of a solid grinding mill used in the gasifier of the present invention.
- FIG. 10 A graph showing the relationship between the concentration of the chia in the slurry and the pressure loss during pipe transportation.
- FIG. 11 is a graph showing the relationship between the concentration of chia in the mixture of water and chia supplied to the solid fuel crushing mill and the cold gas efficiency representing the gas conversion efficiency of the gas furnace.
- FIG. 12 is a schematic view of a coal gasifier showing another embodiment of the present invention.
- FIG. 1 is a block diagram showing a schematic configuration of the gasifier according to the present embodiment.
- the lower part of the gasifier 8 is supplied with coal, which is a solid fuel.
- a supply port and a supply port for air as a gasifying agent are provided, and a discharge port for product gas generated in the furnace is provided at the top of the gasification furnace.
- Coal input to the gasifier is in the form of bulk raw coal 51 and is accepted by raw coal bun force 1 which is a solid fuel reservoir.
- the raw coal 51 stored in the raw coal bunker 1 is supplied to the mill 2 which is a solid fuel pulverizer at a desired speed.
- Mill 2 is charged with a mixture of solid matter such as chia and water in a gel state. The introduction of a mixture of solid matter such as chia and water will be explained separately.
- the gel-like mixture is hereinafter referred to as a gel-like mixture.
- the raw coal 51 is pulverized to an average size of about 40 ⁇ m to become pulverized coal, which is mixed with the gel-like chew 57 sent through the feeder.
- Dry air 61 is introduced into the mill 2, and the moisture of the gel cheer 57 is further removed by this dry air.
- the pulverized coal and coal obtained by pulverizing the raw coal in the mill 2 are transported to the bag filters 4 and 4a by the transport pipe 52 using a gas flow such as air as a transport gas.
- a gas flow such as air as a transport gas.
- the pulverized coal is separated from the carrier gas by the bag filters 4 and 4a and collected in the atmospheric pressure hoppers 5 and 5a.
- the valve below the normal pressure hoppers 5 and 5a opens and the pulverized coal falls to the pressure hoppers 6 and 6a.
- the valves below the normal pressure hoppers 5 and 5a are closed, and the pressure hoppers 6 and 6a are filled with a gas such as nitrogen. Is supplied, and the pressure hopper is pressurized above the operating pressure of the gasifier 8.
- the valve below the pressure hoppers 6 and 6a opens, and the pulverized coal falls to the supply hoppers 7 and 7a. To do.
- the valves below the pressure hoppers 6 and 6a are closed.
- the pulverized coal in the supply hoppers 7 and 7a is supplied to the gasifier 8 as pulverized coals 59 and 60 along with the gas flow by the carrier gas such as nitrogen supplied to the part near the lower part of the supply hopper.
- the The chisel supplied to the mill 2 is also introduced into the gasifier along with the carrier gas flow.
- the gasifier 8 is also supplied with a gasifying agent 58 such as oxygen or air. Since pulverized coal is supplied into the gasification furnace in two upper and lower stages, the gasifying agent is also divided into two stages. Supplied to the gasifier.
- the pulverized coal is partially combusted by oxygen, and generates combustible gas such as carbon monoxide and hydrogen and heat. At this time, the ash contained in the pulverized coal is melted by the generated heat and discharged as slag to the outside of the gasifier 8.
- the product gas 53 which is a combustible gas, is normally discharged from the gasifier 8 at about 1000 ° C.
- the product gas discharged from the gasifier is introduced into a gas cooler 9 which is a water contact type solid material recovery device, and is cooled by direct contact with water.
- the generated gas 53 is accompanied by dust such as chia containing carbon that has not been gasified in the gasification furnace 8, and the generated gas and water are in direct contact with the gas cooler 9 in the gas cooler 9. As a result, it is separated from the product gas.
- the crude gas 54 cooled and dedusted by the gas cooler 9 is discharged out of the system.
- the mixture of the first solid and the like separated from the product gas by the gas cooler 9 and water is discharged from the gas cooler 9 by the slurry and transported toward the mill 2 by the transport pipe 56.
- cleaning water 55 is circulated and supplied to the gas cooler 9, and the generated gas is cleaned and cooled by this cleaning water.
- the chia concentration in the slurry is 30% by weight or more, the pressure loss of the pipe is very large, that is, the fluid in the pipe is poor in fluidity. It turns out that it is not suitable for transportation. On the other hand, if the concentration of the chia slurry is low, the transport efficiency of the chia will deteriorate. Taking these into consideration, it is desirable that the chia concentration of the chia slurry is as high as possible within a range that does not impair the fluidity. Specifically, the chia concentration is preferably 20 to 30% by weight. From the operating conditions of the gasifier, the generation amount of cheer can be estimated empirically. 30% by weight of a slurry can be obtained. If the cheer concentration in the gas slurry obtained by the gas cooler 9 is 30% by weight or less, the gas slurry can be handled as a liquid. In addition, it can be pumped and pressurized.
- the slurry is put into the mill 2, if the moisture in the slurry is too much, the mill slips and the raw coal cannot be crushed well. Therefore, before putting into the mill, the slurry is introduced into the dewatering machine 10 for dehydration. It is desirable to install the dehydrator 10 as close to the mill 2 as possible so as to shorten the transport distance from the dehydrator to the mill. In the dehydrator 10, a portion of the water and the water in the slurry is separated, and the slurry is concentrated to a gel-like 5 7. As the dehydrator, various types such as a press method, a filtration method or a centrifugal separation method can be used.
- the chia concentration in the gel-like chia is 70% by weight or more.
- the reason for this will be described with reference to FIG. Figure 11 shows the relationship between the concentration of water in the mixture of water and water supplied to the solid fuel grinding mill and the cold gas efficiency representing the gas conversion efficiency of the gasifier when the present invention is applied to a plant. It is a graph which shows.
- the cold gas efficiency is the calorific value of the product gas relative to the calorific value of the fuel input to the gasifier, as shown by the following equation, and represents the gas conversion efficiency of the gasifier.
- the gel-like chip 57 obtained by the dehydrator 10 is supplied to the mill 2 by a chuck feeder 12 that does not store the gel-like chip 57.
- a screw feeder or a pusher can be used as the chief feeder.
- FIG. 9 shows an example of a solid fuel pulverization mill used in this example.
- Fig. 9 shows the schematic configuration of the solid fuel grinding mill.
- the mill is entirely covered with a housing 17, and a rotating table 21, a grinding roller 19, a rotating classifier 16, a roller bracket 18 and the like are installed inside.
- the raw coal 51 introduced into the housing 17 through the solid fuel supply pipe 15 falls on the turntable 21.
- a crushing ring 20 is installed on the rotary table 21, and the raw coal 51 eventually moves onto the crushing ring 20.
- a crushing roller 19 is installed on the crushing ring 20, and the raw coal is placed between the crushing roller 19 and the crushing ring 20 by rotating the rotary table 21. 51 enters and is crushed by grinding.
- a pipe in which the cheer feeder 12 is inserted is installed on the side wall of the housing 17, a pipe in which the cheer feeder 12 is inserted is installed. Via this tube, a gel-like cheat 57 is fed into the mill.
- the tube in which the cheer feeder 12 is inserted is arranged so that the gel chew 57 is supplied onto the powder ring 20.
- the number of the above-mentioned tubes is set as many as the number of crushing rollers 19, and the gel-like fibers 57 are distributed to the number in advance and then supplied to the mill.
- the distribution of chiers and raw coals in the mixture 62 of raw coal and chier supplied into the mill can be made uniform. it can. Further, idling of the pulverizing roller can be prevented. Since there is no uneven distribution in the mill, the friction between the crushing roller 19 and the crushing ring 20 becomes uniform, so that vibration can be suppressed.
- dust such as chia that accompanies the gas generated in the gasifier is recovered by the water contact type recovery device, so that the generated gas can be cooled without using a large boiler gas cooler. Can do.
- the chia is supplied to the gasification furnace as a mixture with the solid fuel without containing water
- a lock hopper or feeder for supplying the solid fuel can be used. And feeders can be eliminated.
- the chia is supplied to the gasification furnace after dehydration or further drying, a large amount of moisture is not supplied into the gasification furnace, so that the temperature of the gasification furnace is prevented from lowering, and the generated gas calorific value is reduced. improves.
- coarse particles of several hundred ⁇ ⁇ to several mm may be included in the chi- ter, and the pipes that are put into the gasifier may be blocked. Since one is put into the mill for pulverizing the raw material, it is possible to avoid troubles such as clogging of the coarse particles and clogging of the piping.
- FIG. 2 is a block diagram showing a schematic configuration of the gasifier according to the present embodiment. Configurations and features that differ from Example 1. Explain the characteristics.
- FIG. 2 is different from FIG. 1 in that the gel-like cheer 57 obtained by the dehydrator 10 is introduced into the dryer 14 through the cheer feeder 12 and dried. Is put into the raw coal bunker 1 instead of the mill 2.
- the water separated by the dehydrator 10 is returned to the gas cooler 9 by the water transport pipe 63 and reused.
- a block diagram of the gasifier according to the present example is shown in FIG. The differences from Fig. 1 are explained.
- a water transport pipe 63 is provided between the dehydrator 10 and the gas cooler 9.
- the dehydrator 10 water is separated and discharged when the slurry is dehydrated. This water is returned to the gas cooler 9 through the water transport pipe 63 and reused. Thereby, the water separated by the dehydrator 10 can be reused in the gasification system, and the amount of water used and the amount of discharged wastewater can be suppressed.
- a water transport pipe 63 is provided between the dehydrator 10 and the gas cooler 9 as in the case of FIG. Fig. 4 shows a block diagram of the gasifier of this example.
- the water separated by the dehydrator can be reused in the gasification system, and the amount of water used and the amount of discharged waste water can be suppressed.
- a water treatment device was provided in the middle of the water transport pipe 63 connecting the dehydrator 10 and the gas cooler 9.
- the block diagram of the gasifier of this example Figure 5 shows.
- the present embodiment is extremely effective in a gasification system in which water separated by the dehydrator 10 is returned to the gas cooler 9 and circulated and reused.
- FIG. 5 A block diagram of the gasifier of this example is shown in FIG.
- the gasifier shown in Fig. 1 includes both a gas cooler and a dry dedusting device as a solid material recovery device, and after mixing solid materials such as chia recovered from both. It is designed to be fed into Mill 2 through a dewatering machine.
- a block diagram of the gasifier of this example is shown in FIG.
- the gas 53 generated in the gasifier enters the gas cooler 9, where the chisel is removed and cooled, and the crude gas 54 is introduced into the dry dedusting device 22.
- the In the dry dedusting device 22, the chisel etc. are further separated and discharged as high quality crude gas 67.
- a cyclone and / or a filter can be used for the dry dedusting device 22.
- the crude gas 54 discharged from the gas cooler 9 is rich in moisture. Therefore, it is desirable that the transport pipe for transporting the crude gas 54 to the dry dedusting device 22 is heated so that moisture does not condense.
- the chair 66 recovered by the dry dedusting device 22 falls into the stirring tank 23 by gravity.
- the mixture of water and water mixed in the agitation tank 23 is transported toward the mill 2 through a tire transport pipe 56 as a slurry.
- a heater having a size of 10 zm or less that is difficult to be removed by the gas cooler 9 can be almost completely removed from the crude gas.
- the efficiency of gas conversion will be improved because the recovery rate of the chain is increased.
- the dry dedusting device 22 can also be provided for a gasifier configured as shown in FIG. In FIG. 7, the dry dedusting device 22 is provided on the downstream side of the gas cooler 9, but the dry dedusting device 22 may be provided on the upstream side and the gas cooler 9 may be provided on the downstream side. However, in this case, it is desirable to cool the product gas 53 of the gasifier and introduce it into the dry dedusting device.
- the slurry discharged from the gas cooler 9 is concentrated by a concentrator, and then directed to the mill 2 by the carrier transport pipe 56.
- An example of transportation will be described.
- a block diagram of the gasifier of this example is shown in FIG.
- the slurry discharged from the gas cooler 9 is increased in concentration by the concentrator 24 and then transported through the transport channel 56.
- FIG. 2 An example of an embodiment according to the second invention will be described.
- the gasifier of this embodiment is shown in FIG.
- the feed hopper 31, the gasification furnace 99, the wet collector 80, the pump 90, and the flow rate regulator 35 are configured.
- the lower part of the vertical container has an inverted conical shape, and a feeder 36 is connected to the discharge port formed in the center of the lower part of the container.
- the feeder 36 is connected via a pipe 37 to a paner (not shown) disposed on the lower side wall of the gasification furnace 99.
- the oxidant flow controller 35 is disposed in the middle of the pipe 38, and the pipe 38 is connected to the pipe 37.
- the gasification furnace 99 is, for example, a cylindrical container, and a slag discharge pipe 39 is connected to the center of the bottom.
- a pipe 71 is connected to the upper side wall of the gasification furnace 99, and is connected to the wet collector 80 through the pipe 71.
- the wet collector 80 includes a cylindrical container 82 having a dome-shaped upper portion, a nozzle 81 disposed in the container 82, a stirrer 83, and a guide 84.
- a pipe 87 for discharging the gas in the container 82 out of the system is connected to the top of the container 82.
- a plurality of nozzles 81 for spraying water downward are arranged at the top of the container 82, and the nozzle 81 is connected to a pipe 85 for supplying water.
- a connection port with the pipe 71 is formed on the side surface of the container 82 below the nose 81.
- a conical guide 84 is formed below the connection port, for example, protruding from the inner wall of the container 82 toward the center and having a substantially circular opening at the center.
- the guide 84 is inclined downward toward the opening, and is configured such that, for example, a water droplet flows down toward the opening.
- a screw-type stirrer 83 is horizontally disposed below the guide 84, that is, at the bottom of the container 82.
- the rotating shaft of the stirrer 83 is connected to the drive shaft of a motor 86 provided outside the container 82.
- a pipe 88 is connected to the bottom side wall of the container 82, and the pipe 88 is connected to the suction port of the pump 90.
- the discharge port of the pump 90 is connected to the lower side wall of the gasification furnace 99 through a pipe 89.
- the raw material hopper 31 stores, for example, finely pulverized coal (hereinafter, abbreviated as pulverized coal).
- pulverized coal finely pulverized coal
- the feeder 36 When the feeder 36 is operated, the required amount of pulverized coal is discharged and the inside of the pipe 37 is air-flowed, for example. Then, it is put into the gasifier 99 from Nozure. At this time, an oxidizing agent (for example, oxygen) whose flow rate is adjusted by the flow rate regulator 35 is supplied into the pipe 37 via the pipe 38.
- an oxidizing agent for example, oxygen
- the pulverized coal and oxidizer supplied into the gasification furnace 99 are subjected to simultaneous partial combustion and gasification of the pulverized coal.
- the pulverized coal reacts with the oxidant at high temperature (for example, about 1500 ° C) and high pressure, and a combustible gas (hereinafter abbreviated as product gas) mainly composed of hydrogen and carbon monoxide is generated.
- product gas a combustible gas mainly composed of hydrogen and carbon monoxide is generated.
- product gas mainly composed of hydrogen and carbon monoxide
- This generated gas contains unburned chia, and the chia is accompanied by the produced gas and ascends while turning in the gasification furnace, for example.
- the produced gas containing the chia is discharged to the outside from the discharge port of the gasification furnace 99 and introduced into the wet collector 80 through the pipe 71.
- inorganic substances such as ash, sand or glass contained in the raw material become slag (molten ash), flow down to the lower region in the gasification furnace 99, and are discharged out of the system through the slag discharge pipe 39.
- the chia in the product gas introduced into the container 82 of the wet collector 80 is captured by fine water droplets sprayed from a plurality of nozzles 81 and falls downward.
- the product gas reaches the top of the container 82 through the periphery of the nozzle 81 and is discharged out of the system through the pipe 87.
- the water droplets containing the chia fall on the guide 84, flow down at the opening force in the center, and stay in the stirring section formed at the bottom of the container 82.
- the collected liquid that has flowed down to the stirring section is stirred by a stirrer 83, and the mixture and water are mixed to form a slurry.
- This slurry is sucked into the pump 90 through the pipe 88 and is re-supplied into the gasification furnace 99 through the pipe 89, whereby the cheer contained in the slurry is gasified.
- the size of the water droplet that captures the chewy is such that the smaller the water droplet diameter, the larger the contact area and the easier it is to capture J, but if it is too large, it may evaporate before falling on the guide 84 It is preferable to adjust the size in consideration of these.
- the chia particles that are difficult to mix with water having high hydrophobicity are wet-collected in water droplets, dropped to the bottom of the container 82, and then stirred, whereby the chia is It is dispersed in water and can suppress aggregation. Thereby, for example, blockage in the vicinity of the outlet of the wet collector 80 can be prevented, and stable recycling of the cheer can be performed.
- the wet collector 80 of the present embodiment has an integrated structure of means for wet collection of the chew and means for slurrying, so that the wet collection is performed.
- the system can be reduced in cost due to the simplification of equipment.
- the slurry in which the chia is dispersed is sucked by the pump, for example, blockage of a rising portion in the supply pipe can be prevented.
- such a slurry is re-supplied into the furnace, so that the gasification can be efficiently performed, the carbon conversion rate is improved, and high-concentration hydrogen can be produced.
- the force of applying a method of spraying water onto the product gas as the chief collecting means is not limited to this.
- a method of applying the product gas to a wet wall Alternatively, a method of passing the generated gas through water may be used.
- the gasification furnace 99 of the present embodiment is a one-chamber, two-stage gasification furnace in which the upper and lower stages of the gasification furnace 99 are arranged, and the gas generator is configured so that the generated gas forms a swirling flow. It may be arranged in the direction of 99 tangents.
- the lock discharged from the gasification furnace is used as a lock hopper. Without being made into a slurry, the gasification furnace can be re-supplied.
- the gasifier of the present invention has a very simple structure, it is a synthetic liquefied fuel from various plants that use fuel gas, for example, power generation equipment such as internal combustion engines and gas turbines, carbon monoxide and hydrogen in the fuel gas, etc. It can be expected to be applied to plants that produce methane, ammonia synthesis plants, and nitrogen fertilizer synthesis plants.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processing Of Solid Wastes (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200680003973.4A CN101115822B (zh) | 2005-02-04 | 2006-02-01 | 固体燃料气化装置与气化方法 |
AU2006211317A AU2006211317B2 (en) | 2005-02-04 | 2006-02-01 | Apparatus and method for gasifying solid fuel |
US11/883,442 US20090249691A1 (en) | 2005-02-04 | 2006-02-01 | Apparatus and Method for Gasifying Solid Fuel |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005029131A JP4490300B2 (ja) | 2005-02-04 | 2005-02-04 | 固体燃料ガス化装置およびガス化方法 |
JP2005-029131 | 2005-02-04 |
Publications (1)
Publication Number | Publication Date |
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WO2006082823A1 true WO2006082823A1 (ja) | 2006-08-10 |
Family
ID=36777207
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PCT/JP2006/301618 WO2006082823A1 (ja) | 2005-02-04 | 2006-02-01 | 固体燃料ガス化装置およびガス化方法 |
Country Status (5)
Country | Link |
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US (1) | US20090249691A1 (ja) |
JP (1) | JP4490300B2 (ja) |
CN (1) | CN101115822B (ja) |
AU (1) | AU2006211317B2 (ja) |
WO (1) | WO2006082823A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN102002398B (zh) * | 2010-07-07 | 2014-03-05 | 孔祥清 | 一种煤炭、木枝、植物杆茎与氧制造无氮煤燃气的反应装置 |
CN103089421B (zh) * | 2013-01-18 | 2015-04-15 | 王少林 | 三态燃料内燃发动机 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58138790A (ja) * | 1982-02-10 | 1983-08-17 | Hitachi Ltd | 石炭ガス化方法 |
JPS60260689A (ja) * | 1984-06-08 | 1985-12-23 | Mitsubishi Heavy Ind Ltd | ガス化炉における生成チヤ−の供給方法 |
JP2000192062A (ja) * | 1998-12-24 | 2000-07-11 | Nkk Corp | スラリー状未燃カーボンの再資源化方法 |
JP2000239671A (ja) * | 1999-02-19 | 2000-09-05 | Nippon Steel Corp | 石炭の急速熱分解方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3950147A (en) * | 1974-08-08 | 1976-04-13 | Kamyr, Inc. | Process for feeding coal to a fluidized bed or suspended particle pressurized processing chamber and apparatus for carrying out the same |
JPS62260689A (ja) * | 1986-03-24 | 1987-11-12 | 坂田 ▲じ▼朗 | 保冷車用組み込みコンテナ |
US5386647A (en) * | 1991-04-01 | 1995-02-07 | Amax Coal West, Inc. | Thin, self-cleaning gas distribution deck in fluidized bed dryer |
FR2722436B1 (fr) * | 1994-07-13 | 1996-09-20 | Inst Francais Du Petrole | Procede et installation de thermolyse de dechets |
US5560550A (en) * | 1994-12-22 | 1996-10-01 | Combustion Engineering, Inc. | Dry solids pump system for feeding a high pressure combustor |
US6004379A (en) * | 1997-06-06 | 1999-12-21 | Texaco Inc. | System for quenching and scrubbing hot partial oxidation gas |
JP2000210650A (ja) * | 1999-01-26 | 2000-08-02 | Ebara Corp | 電子機器廃棄物の処理方法 |
JP4085239B2 (ja) * | 2002-02-12 | 2008-05-14 | 株式会社日立製作所 | ガス化方法、及びガス化装置 |
-
2005
- 2005-02-04 JP JP2005029131A patent/JP4490300B2/ja active Active
-
2006
- 2006-02-01 WO PCT/JP2006/301618 patent/WO2006082823A1/ja active Application Filing
- 2006-02-01 US US11/883,442 patent/US20090249691A1/en not_active Abandoned
- 2006-02-01 CN CN200680003973.4A patent/CN101115822B/zh active Active
- 2006-02-01 AU AU2006211317A patent/AU2006211317B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58138790A (ja) * | 1982-02-10 | 1983-08-17 | Hitachi Ltd | 石炭ガス化方法 |
JPS60260689A (ja) * | 1984-06-08 | 1985-12-23 | Mitsubishi Heavy Ind Ltd | ガス化炉における生成チヤ−の供給方法 |
JP2000192062A (ja) * | 1998-12-24 | 2000-07-11 | Nkk Corp | スラリー状未燃カーボンの再資源化方法 |
JP2000239671A (ja) * | 1999-02-19 | 2000-09-05 | Nippon Steel Corp | 石炭の急速熱分解方法 |
Also Published As
Publication number | Publication date |
---|---|
JP2006213847A (ja) | 2006-08-17 |
AU2006211317A1 (en) | 2006-08-10 |
US20090249691A1 (en) | 2009-10-08 |
AU2006211317B2 (en) | 2010-07-08 |
JP4490300B2 (ja) | 2010-06-23 |
CN101115822A (zh) | 2008-01-30 |
CN101115822B (zh) | 2010-09-29 |
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