WO2012070453A1 - ビンシステム及びチャー回収装置 - Google Patents
ビンシステム及びチャー回収装置 Download PDFInfo
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- WO2012070453A1 WO2012070453A1 PCT/JP2011/076429 JP2011076429W WO2012070453A1 WO 2012070453 A1 WO2012070453 A1 WO 2012070453A1 JP 2011076429 W JP2011076429 W JP 2011076429W WO 2012070453 A1 WO2012070453 A1 WO 2012070453A1
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- char
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
- B65G65/32—Filling devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/16—Gas pressure systems operating with fluidisation of the materials
- B65G53/18—Gas pressure systems operating with fluidisation of the materials through a porous wall
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
- B01J8/0015—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor
- B01J8/0025—Feeding of the particles in the reactor; Evacuation of the particles out of the reactor by an ascending fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
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- 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
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/02—Dust removal
- C10K1/026—Dust removal by centrifugal forces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
- F23K1/04—Heating fuel prior to delivery to combustion apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
- F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00008—Controlling the process
- B01J2208/00017—Controlling the temperature
- B01J2208/00106—Controlling the temperature by indirect heat exchange
- B01J2208/00265—Part of all of the reactants being heated or cooled outside the reactor while recycling
- B01J2208/00292—Part of all of the reactants being heated or cooled outside the reactor while recycling involving reactant solids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00743—Feeding or discharging of solids
- B01J2208/00752—Feeding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
- B01J2208/00743—Feeding or discharging of solids
- B01J2208/00761—Discharging
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- 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
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- 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
- C10J2300/094—Char
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- 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
- C10J2300/0953—Gasifying agents
- C10J2300/0956—Air or oxygen enriched air
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- 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
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/164—Integration of gasification processes with another plant or parts within the plant with conversion of synthesis gas
- C10J2300/1643—Conversion of synthesis gas to energy
- C10J2300/1653—Conversion of synthesis gas to energy integrated in a gasification combined cycle [IGCC]
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- 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
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1678—Integration of gasification processes with another plant or parts within the plant with air separation
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- 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
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1693—Integration of gasification processes with another plant or parts within the plant with storage facilities for intermediate, feed and/or product
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- 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
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- 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
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- 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
- C10J3/72—Other features
- C10J3/723—Controlling or regulating the gasification process
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/10—Supply line fittings
- F23K2203/103—Storage devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/10—Supply line fittings
- F23K2203/104—Metering devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2203/00—Feeding arrangements
- F23K2203/20—Feeding/conveying devices
- F23K2203/201—Feeding/conveying devices using pneumatic means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23K—FEEDING FUEL TO COMBUSTION APPARATUS
- F23K2900/00—Special features of, or arrangements for fuel supplies
- F23K2900/03001—Airlock sections in solid fuel supply lines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23R—GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
- F23R2900/00—Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor
- F23R2900/00002—Gas turbine combustors adapted for fuels having low heating value [LHV]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
- Y02E20/18—Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
Definitions
- the present invention relates to a bin system used for a char recovery device of a coal gasification combined power generation facility and the char recovery device.
- Coal gasification combined power generation facility is a power generation facility aiming at higher efficiency and higher environment than conventional coal-fired power generation by gasifying coal and combining it with combined cycle power generation.
- This coal gasification combined cycle power generation facility has a great merit that it can use coal with abundant resources, and it is known that the merit can be further increased by expanding the applicable coal types.
- coal gasification combined power generation facilities generally have a coal supply device, a coal gasification furnace, a char recovery device, a gas purification facility, a gas turbine facility, a steam turbine facility, and an exhaust heat recovery boiler. Therefore, coal (pulverized coal) is supplied to the coal gasifier by the coal feeder and gasifiers (air, oxygen-enriched air, oxygen, water vapor, etc.) are taken in, and this coal gasifier As a result, coal is combusted and gasified to produce product gas (combustible gas). And this product gas is gas refined after the unreacted part (char) of coal is removed by the char recovery device, and it is burned by being supplied to the gas turbine equipment to produce high temperature and high pressure combustion gas. And drive the turbine.
- the exhaust gas after driving the turbine recovers thermal energy by the exhaust heat recovery boiler, generates steam and supplies it to the steam turbine equipment, and drives the turbine. As a result, power generation is performed.
- the exhaust gas from which the thermal energy has been recovered is released to the atmosphere through the chimney.
- the char recovery device in the above-described coal gasification combined power generation facility removes the contained char from the generated gas generated in the coal gasification furnace using a plurality of stages of dust collectors.
- the recovered char is returned to the coal gasifier by a predetermined amount by the char supply device. That is, the bin system is applied here.
- a general bin system has one (or a plurality) bins, a plurality of char discharge lines for discharging char collected by each dust collector to the bin, and a plurality (or one) of chars collected in the bin. ) And a plurality of char supply lines for supplying to the hopper.
- the char discharge line and the char supply line are arranged with a predetermined inclination angle with respect to the vertical direction from the dust collector and the hopper toward the bottle.
- the char is transferred by dry conveyance, and the char transferred from the dust collector to the hopper through the bottle is a gravity drop. In this case, if the inclination angle of the char discharge line or the char supply line is set to be large, there is a possibility that the char in the pipe is accumulated.
- the inclination angle of the char discharge line and the char supply line cannot be reduced, and considering the interference between a plurality of dust collectors and a plurality of hoppers, the char discharge line and the char supply line become long. There is a problem that the bin system and the char recovery device are lengthened, that is, the size and cost of the device are increased.
- This invention solves the subject mentioned above, and aims at providing the bin system and char collection
- the bottle system of the present invention comprises a sealed container capable of collecting or storing powder, and a plurality of powders disposed at a predetermined inclination angle capable of discharging powder to the sealed container by gravity drop.
- a powder discharge line, a plurality of powder supply lines arranged at a predetermined inclination angle capable of supplying the powder stored in the sealed container by gravity drop, and a powder that gravity drops through the plurality of powder discharge lines And an assist device for assisting body flow.
- the assist device when the powder flows through each powder discharge line by gravity drop and is discharged into the closed container, and when each powder flows through this powder supply line by gravity drop from the closed container, the assist device has a plurality of powder discharge lines. Since it assists the flow of the powder that falls by gravity, the powder will flow properly through this powder discharge line, and deposition can be suppressed. As a result, the inclination angle of the plurality of powder discharge lines can be set large, the height of the apparatus can be suppressed, and the apparatus can be miniaturized.
- the bottle system of the present invention includes a sealed container capable of collecting or storing powder, a plurality of powder discharge lines arranged at a predetermined inclination angle capable of discharging powder to the sealed container by gravity drop, and the sealed A plurality of powder supply lines arranged at a predetermined inclination angle capable of supplying the powder stored in the container by gravity drop, and an assist device for assisting the flow of the powder that gravity falls through the plurality of powder supply lines These are provided.
- the assist device uses a plurality of powder supply lines. Since it assists the flow of the powder that falls by gravity, the powder will flow properly in this powder supply line, and deposition can be suppressed. As a result, the inclination angle of the plurality of powder supply lines can be set large, the height of the apparatus can be suppressed, and the apparatus can be miniaturized.
- the assist device has an assist gas supply device that supplies an inert gas (N 2 , CO 2, etc.) along the flow direction of the powder.
- an inert gas N 2 , CO 2, etc.
- an assist gas supply device that supplies an inert gas as an assist device, it is possible to simplify the device and to prevent the powder flowing through each line from being adversely affected and to be appropriate.
- a powder transport system can be constructed.
- the assist gas supply device supplies an inert gas along an inner peripheral lower surface of a pipe constituting the powder discharge line or the powder supply line.
- the powder moves along the inner peripheral lower surface in the pipe constituting the powder discharge line or the powder supply line.
- the powder By supplying an inert gas along the inner peripheral lower surface in this pipe, the powder The flow of the fluid becomes smooth, and the accumulation of powder in the pipe can be prevented.
- the assist gas supply device includes an assist gas chamber provided in a lower part of a pipe constituting the powder discharge line or the powder supply line, and the assist gas chamber is provided on an inner peripheral lower surface of the pipe. It is characterized by supplying an inert gas.
- the inert gas is supplied from the assist gas chamber provided in the lower part of the pipe constituting the powder discharge line or the powder supply line to the inner peripheral lower surface of the pipe, so that the powder flowing along the inner peripheral lower surface of the pipe The body can flow smoothly by this inert gas, and the accumulation of powder inside the pipe can be prevented.
- the assist gas supply device changes the supply amount of the inert gas according to the flow rate of the powder.
- the powder discharge line or the powder supply line has an inclination angle set to 60 degrees or less with respect to the horizontal direction, and the assist device is provided on the line set to the inclination angle. It is characterized by being able to.
- the inclination angle of the powder discharge line and the powder supply line can be set to 60 degrees or less, the height of the apparatus can be suppressed, and the apparatus can be miniaturized.
- the powder discharge line or the powder supply line has an inclination angle set to 60 degrees or less with respect to the horizontal direction, and the assist device is provided on the line set to the inclination angle. And an assist gas discharge part is provided.
- the inclination angle of the powder discharge line and the powder supply line can be set to 60 degrees or less, the height of the apparatus can be suppressed, and the assist device and the assist gas discharge unit are included in this line. By being provided, a further apparatus can be reduced in size.
- the char recovery device of the present invention is a char recovery device that recovers unburned coal from a product gas generated by gasifying coal, and is a first dust collector connected to a product gas generation line.
- a second dust collector connected to a first gas discharge line in the first dust collector, a first unburned component discharge line in the first dust collector and a second uncollected line in the second dust collector.
- a bin connected to the fuel discharge line, a plurality of unburned component supply lines that supply unburned component from the bin to the unburned component return line, and each unburned component discharge line or the unburned component supply line.
- an assist device that assists the flow of unburned matter that falls by gravity.
- the coarse unburned matter is separated from the product gas by the first dust collector, and the fine unburned matter is separated from the produced gas by the second dust collector.
- the unburned matter stored in the bin is supplied to the unburned component return line through each unburned component supply line.
- the assist device discharges each unburned component. Assists the flow of unburned components that fall by gravity through the line or each unburned component supply line, so unburned components will flow properly through the unburned component discharge line and unburned component supply line, thereby suppressing deposition. can do.
- the device can be miniaturized.
- FIG. 1 is a schematic configuration diagram of a coal gasification combined power generation facility to which a bin system according to Embodiment 1 of the present invention is applied.
- FIG. 2 is a schematic diagram illustrating a main part of the bin system according to the first embodiment.
- FIG. 3 is a schematic configuration diagram illustrating a main part of the bin system according to the second embodiment of the present invention.
- FIG. 4 is a schematic configuration diagram illustrating a main part of the bin system according to the third embodiment of the present invention.
- FIG. 5 is a schematic configuration diagram illustrating a main part of the bin system according to the fourth embodiment of the present invention.
- FIG. 1 is a schematic configuration diagram of a combined coal gasification combined power generation facility to which a bin system according to a first embodiment of the present invention is applied
- FIG. 2 is a schematic diagram illustrating a main part of the bin system according to the first embodiment.
- the coal gasification combined power generation facility (IGCC: Integrated Coal Gasification Combined Cycle) of Example 1 adopts an air blowing method in which coal gas is generated in a gasification furnace using air as a gasifying agent, and is purified by a gas purification facility The coal gas is supplied as fuel gas to the gas turbine equipment for power generation. That is, the coal gasification combined power generation facility of the present embodiment is an air blowing type power generation facility.
- the coal gasification combined power generation facility of Example 1 includes a coal supply device 11, a coal gasification furnace 12, a char recovery device 13, a gas purification facility 14, a gas turbine facility 15, a steam turbine facility 16, It has a generator 17 and a waste heat recovery boiler (HRSG) 18.
- HRSG waste heat recovery boiler
- the coal feeder 11 includes a coal pulverizer (mill) 21 and a pulverized coal supply facility (bin system) 22 that pressurizes and supplies pulverized coal dried and pulverized by the coal pulverizer 21.
- the coal pulverizer 21 produces pulverized coal by pulverizing coal into fine particles while drying with dry gas. In this case, a part of the exhaust gas from the gas turbine equipment 15 and the exhaust heat recovery boiler 18 is used as the drying gas.
- a pulverized coal separation device for example, a dust collector
- a pulverized coal bottle 24 and a plurality of pulverized coal supply hoppers 25a, 25b, 25c are provided on the downstream side of the coal pulverizer 21.
- the coal gasification furnace 12 is connected to a coal supply line 31 from a pulverized coal supply facility and can supply pulverized coal.
- the coal gasification furnace 12 is connected to a char return line 32 from the char recovery device 13 so that char (unreacted coal, powder) recovered by the char recovery device 13 can be recycled. Yes.
- the coal gasification furnace 12 is connected to a compressed air supply line 33 from a gas turbine facility 15 (compressor 61), and a part of the air compressed by the gas turbine facility 15 is boosted by a bleed air booster. Can be supplied.
- the air separation device 34 separates and generates nitrogen and oxygen from air in the atmosphere.
- the first nitrogen supply line 35 is connected to the coal supply line 31 and the second nitrogen supply line 36 is a char return line 32.
- the oxygen supply line 37 is connected to the compressed air supply line 33. In this case, nitrogen is used as a transport gas for coal and char, and oxygen is used as a gasifying agent.
- the coal gasification furnace 12 is, for example, a spouted bed type gasification furnace, in which coal (pulverized coal) supplied therein is partially oxidized by a gasifying agent (air, oxygen-enriched air, oxygen, water vapor, etc.). -Generates combustible gas (product gas, coal gas) mainly composed of carbon dioxide and hydrogen by gasification.
- the coal gasification furnace 12 is not limited to a spouted bed gasification furnace, and may be a fluidized bed gasification furnace or a fixed bed gasification furnace.
- a product gas line 38 is provided downstream of the coal gasifier 12 and is connected to the char recovery device 13.
- the char recovery device 13 can separate the char contained in the product gas and the product gas.
- a combustible gas may be cooled to a predetermined temperature by providing a gas cooling device in the downstream of the gasification furnace, and then supplied to the char recovery device 13 through the product gas line 38.
- the char collection device 13 applies the bin system of the present invention, and includes a cyclone 41 as a first dust collector, a first filter 42a and a second filter 42b as a second dust collector, and each rotary valve 43a, 43b, a bin 44, and hoppers 45a, 45b, 45c, and 45d.
- the cyclone 41 performs primary separation (separation of coarse particles) of the char contained in the combustible gas generated in the coal gasification furnace 12, and discharges the combustible gas from which the coarse char is separated at the top.
- a gas discharge line 46 is connected, and a first char discharge line (first unreacted component discharge line) 47 for discharging coarse char separated from the combustible gas is connected to the lower part.
- the first and second filters 42a and 42b have a first gas discharge line 46 branched and connected to the sides, and a second gas discharge line 48 for discharging a combustible gas from which fine char has been separated is connected to the upper part.
- second char discharge lines 49a and 49b for discharging the fine char separated from the combustible gas are connected to the lower part.
- Rotary valves 43a and 43b are respectively provided at discharge portions to the second char discharge lines 49a and 49b in the filters 42a and 42b.
- the filters 42a and 42b are porous filters, and have, for example, a ceramic filter medium. When the combustible gas passes through the filter medium, the char in the combustible gas can be removed. .
- the char collected by the filters 42a and 42b is dropped by a back washing process or the like, discharged from the filter container by the rotary valves 43a and 43b, and discharged to the bin 44 through the second char discharge lines 49a and 49b.
- the 1st pressure equalization line 50 which equalizes both pressure is provided.
- the bin 44 is connected to the downstream ends of the first char discharge line 47 and the second char discharge lines 49a and 49b, and is separated from the combustible gas by the cyclone 41 and the first and second filters 42a and 42b. Grain char and fine grain char are gathered and distributed to each hopper.
- Each hopper 45a, 45b, 45c, 45d is connected to the bin 44 via a switching line 51a, 51b, 51c, 51d.
- the switching line 51a, 51b, 51c, 51d is connected to the hopper 45a, 45b, 45c, 45d.
- the first switching valves 52a, 52b, 52c, and 52d are mounted on the upstream side, and the second switching valves 53a, 53b, 53c, and 53d are mounted on the downstream side.
- the hoppers 45a, 45b, 45c, and 45d are alternately used by switching the switching lines 51a, 51b, 51c, and 51d used by the switching valves 52a, 52b, 52c, 52d, 53a, 53b, 53c, and 53d. Continuous operation is possible.
- the switching lines 51 a, 51 b, 51 c, 51 d merge at the downstream side of the hoppers 45 a, 45 b, 45 c, 45 d and are connected to the char return line 32.
- the bin 44 is arranged on the upstream side for the four switching lines 51a, 51b, 51c, 51d (four hoppers 45a, 45b, 45c, 45d), and the char is assembled.
- a bin 44 is provided for distribution and temporary storage to each hopper.
- a state where char is supplied to the gasifier between the first gas discharge line 46 of the cyclone and the hoppers 45a, 45b, 45c, 45d (for example, in the case of the hopper 45a, the switching valve 52a is closed).
- the switching valve 53a is in an open state and the pressure of the hopper 45a is higher than that of the bin 44), and the pressure in the hopper 45a is reduced and discharged to equalize the pressure in order to receive the char of the bin 44.
- Lines 81a (81b, 81c, 81d) are provided.
- the pressure equalization line 81a (81b, 81c, 81d) is connected to the first gas discharge line 46, and third switching valves 82a, 82b, 82c, 82 are mounted.
- the char collection device 13 of this embodiment includes the cyclone 41, the first filter 42a and the second filter 42b, the rotary valves 43a and 43b, the bin 44, the hoppers 45a, 45b, 45c, and 45d.
- the bin system according to the present invention includes a bin 44 as a container capable of collecting and distributing char to each hopper, and a plurality of powders arranged at a predetermined inclination angle capable of discharging the char into the bin 44 by gravity drop.
- Char discharge lines 47, 49a, 49b as body discharge lines and chars collected in the bin 44 or stored char are arranged with a predetermined inclination angle that can be supplied to the hoppers 45a, 45b, 45c, 45d by gravity drop.
- each char discharge line 47, 49a, 49b and each switching line 51a, 51b, 51c, 51d are not aligned along the char flow direction as an assist device that assists the flow of the char that drops by gravity.
- An assist gas supply device that supplies active gas is provided.
- the assist gas supply devices attached to the char discharge lines 47, 49a, 49b have assist gas supply units 54, 55a, 55b and assist gas discharge units 56, 57a, 57b, respectively.
- the assist gas supply devices attached to the switching lines 51a, 51b, 51c, 51d have assist gas supply units 58a, 58b, 58c, 58d and assist gas discharge units 59a, 59b, 59c, 59d, respectively. ing.
- the assist gas supply units 58a, 58b, 58c, and 58d and the assist gas discharge units 59a, 59b, 59c, and 59d as the assist gas supply device have substantially the same configuration. Therefore, hereinafter, only the assist gas supply unit 54 and the assist gas discharge unit 56 as the assist gas supply device of the first char discharge line 47 will be described.
- the first char discharge line 47 includes a first straight portion 101 arranged vertically from the cyclone 41 (see FIG. 1) and a bin 44 (FIG. 1).
- the second straight line portion 102 is arranged to hang down in the vertical direction, and an inclined portion 103 that connects the lower end portion of the first straight portion 101 and the upper end portion of the second straight portion 102.
- the inclined portion 103 is arranged to be inclined by a predetermined angle ⁇ (for example, 60 degrees or less) with respect to the horizontal direction.
- the inclined portion 103 of the char discharge line 47 has an assist gas supply portion 54 attached to the base end portion (upper end portion) and an assist gas discharge portion 56 attached to the distal end portion (lower end portion).
- the assist gas supply unit 54 includes a gas supply pipe 111 for supplying an inert gas and a gas injection nozzle 112, and the gas injection nozzle 112 supplies an inert gas to the inside from the base end portion of the inclined portion 103. can do.
- the assist gas discharge unit 56 includes a gas discharge pipe 113 that discharges a replacement gas and an inert gas corresponding to the volume due to the movement of the char, and a gas recovery unit 114. Internal gas can be discharged from the end.
- the gas recovery unit 114 has a function of separating char and gas. Specifically, the gas recovery unit 114 opens in a direction opposite to the char discharge direction (above the second straight portion 102), and separates char and gas by gravity or inertia. It is a structure.
- the inert gas is preferably nitrogen gas or carbon dioxide gas, but an inert gas (inert gas) with an oxygen concentration of 3% or less or a flammable gas (char recovery unit outlet or gas purification equipment outlet gas is recycled under pressure. And the combustion of the gas flowing through the first char discharge line 47 can be prevented.
- the inert gas is desirably a gas having a temperature equal to or higher than the dew point of the gas flowing through the first char discharge line 47.
- the assist gas supply unit 54 supplies the inert gas continuously or intermittently.
- the coarse char separated from the combustible gas by the cyclone 41 flows down to the first char discharge line 47 due to gravity drop, passes through the first straight portion 101, the inclined portion 103, and the second straight portion 102 to the bin 44. Collected and distributed or stored to each hopper.
- the assist gas supply unit 54 supplies the inert gas from the gas injection nozzle 112 into the inclined portion 103 in the direction of the flow of the coarse char, so that the inside of the pipe constituting the first char discharge line 47 The flow of the coarse char moving along the lower surface is promoted, and deposition can be suppressed.
- the assist gas discharge part 56 can collect
- the gas purification facility 14 performs gas purification by removing impurities such as sulfur compounds, nitrogen compounds, and halides from the combustible gas from which the char has been separated by the char recovery device 13.
- the gas purification equipment 14 then removes impurities from the combustible gas to produce fuel gas, and supplies this to the gas turbine equipment 15.
- the gas turbine equipment 15 includes a compressor 61, a combustor 62, and a turbine 63, and the compressor 61 and the turbine 63 are connected by a rotating shaft 64.
- the combustor 62 is supplied with compressed air 65 from the compressor 61, is supplied with fuel gas 66 from the gas purification facility 14, and supplies combustion gas 67 to the turbine 63.
- the gas turbine equipment 15 is provided with a compressed air supply line 33 extending from the compressor 61 to the coal gasification furnace 12, and a booster 68 is provided in the middle. Therefore, in the combustor 62, the compressed air supplied from the compressor 61 and the fuel gas supplied from the gas purification facility 14 are mixed and burned, and the rotating shaft 64 is rotated by the generated combustion gas in the turbine 63. By doing so, the generator 17 can be driven.
- the steam turbine facility 16 has a turbine 69 connected to the rotating shaft 64 in the gas turbine facility 15, and the generator 17 is connected to the base end portion of the rotating shaft 64.
- the exhaust heat recovery boiler 18 is provided in the exhaust gas line 70 from the gas turbine equipment 15 (the turbine 63), and generates steam by exchanging heat with the high temperature exhaust gas. The exhaust gas whose heat has been recovered by the exhaust heat recovery boiler 18 is released from the chimney 74 to the atmosphere.
- coal is dried and pulverized by a coal pulverizer 22 to produce pulverized coal in a coal feeder 11.
- the pulverized coal is pressurized by a pulverized coal separator and a pulverized coal supply facility (bin system) composed of a pulverized coal bottle and a pulverized coal bottle, and is gasified into coal through a coal supply line 31 by nitrogen supplied from an air separator 34. It is supplied to the furnace 12. Further, the char recovered by the char recovery device 13 to be described later is supplied to the coal gasification furnace 12 through the char return line 32 by nitrogen supplied from the air separation device 34. Further, the compressed air extracted from the gas turbine equipment 15 to be described later is boosted by the booster 68 and then supplied to the coal gasification furnace 12 through the compressed air supply line 33 together with the oxygen supplied from the air separation device 34.
- the supplied pulverized coal is partially oxidized and gasified by a gasifying agent (compressed air, oxygen, etc.), so that a combustible gas (generated gas, coal) containing carbon dioxide or hydrogen as a main component is used. Gas).
- a gasifying agent compressed air, oxygen, etc.
- the combustible gas is discharged from the coal gasifier 12 through the product gas line 38 and sent to the char recovery device 13.
- the combustible gas is first supplied to the cyclone 41, whereby the char contained in the gas is primarily separated from the combustible gas (coarse particles are separated).
- the combustible gas from which the char is primarily separated is discharged to the first gas discharge line 46, while the coarse char separated from the combustible gas is discharged to the bin 44 through the first char discharge line 47.
- the combustible gas that is primarily separated by the cyclone 41 and discharged to the first gas discharge line 46 is then supplied to the filters 42a and 42b, and the char remaining in the combustible gas is secondarily separated.
- the combustible gas from which the residual char is separated is discharged to the second gas discharge line 48, while the char separated from the combustible gas is discharged from the filter container by the rotary valves 43a and 43b, and the second char discharge It is paid out to the bin 44 through the lines 49a and 49b.
- the bin 44 collects the primary separation char paid out to the bin 44 through the first char discharge line 47 and the secondary separation char paid out to the bin 44 through the second char discharge lines 49a and 49b to each hopper. Can be supplied separately or stored.
- the pressure P 4 of the pressure P 2 and the bins 44 of the first gas discharge line 46 is substantially the same
- the pressure relationship is P 1 > P4 ⁇ P 2 > P 3 . Therefore, the primary separation char separated by the cyclone 41 is discharged from the first char discharge line 47 to the bin 44, and the backflow of the gas including the coarse char in the first char discharge line 47 is prevented, and the cyclone 41 High dust collection efficiency is maintained.
- the gas substituted for the volume of the primary separation char flows back through the first char discharge line 47, and when the discharge amount of the primary separation char increases, the discharge part ( The phenomenon that the primary separation char blows up in the throat portion), and the dust collection efficiency in the cyclone 41 is lowered.
- the pressure P 4 of the pressure P 2 and the bins 44 of the first gas discharge line 46 is adjusted to approximately the same pressure by the first pressure equalization line 50, cyclone 41 and the filter 42a, the char from 42b each char Since the gas is discharged to the bin 44 through the discharge lines 47, 49a, and 49b, the gas containing the char in the bin 44 may be discharged to the first gas discharge line 46 through the first pressure equalizing line 50.
- the gas discharged from the pressure equalizing line 50 is supplied to the filters 42a and 42b, whereby char is separated from the combustible gas.
- the primary separation char separated from the combustible gas by the cyclone 41 is discharged to the bin 44 through the first char discharge line 47, and the secondary separation char separated from the combustible gas by the respective filters 42a and 42b is: It is paid out to the bin 44 through the second char discharge lines 49a, 49b.
- the assist gas supply units 54, 55a, and 55b of the assist gas supply device supply the inert gas to the inclined portions 103 of the char discharge lines 47, 49a, and 49b.
- the char collected or stored in the bin 44 sequentially includes the first switching valves 52a, 52b, 52c, 52d, the second switching valves 53a, 53b, 53c, 53d, and the third switching valves 90a, 90b, 90c, 90d.
- the switching line 51a and the hopper 45a, the switching line 51b and the hopper 45b, the switching line 51c and the hopper 45c, the switching line 51d and the hopper 45d are sequentially used.
- the third switching valve 90a of the second pressure equalizing line 60a and the switching valve 52a of the switching line 51a are opened, and the switching valve 53a is closed to close the bin 44 and the hopper 45a.
- the third switching valve 90c of the second pressure equalizing line 60c and the switching valve 52c of the switching line 51c are closed, the switching valve 53c is opened, and the gasification furnace is opened. You can return the char.
- the other switching valves 90b and 90d are opened, and 52b, 52d, 53b and 53d are closed, whereby the char of the bin 44 can be supplied to the hopper 45a through the switching line 51a.
- the third switching valve 90b of the second pressure equalizing line 60b and the switching valve 52b of the switching line 51b are opened and the switching valve 53b is closed, so that the bin 44 and the hopper 45b are pressure equalized.
- Can supply char As a result, the recovered char can be continuously discharged and supplied from the bin to the hopper, and the char recovery device 13 can be continuously operated.
- the char supplied to the hoppers 45a, 45b, 45c, and 45d is returned to the coal gasification furnace 12 through the char return line 32 and gasified.
- the assist gas supply units 58a, 58b, 58c, and 58d of the assist gas supply device supply the inert gas to the inclined portions during the char supply of the switching lines 51a, 51b, 51c, and 51d, and the switching lines 51a.
- 51b, 51c, 51d assists the flow of the char that moves along the lower surface in the pipe, and the flow is promoted, and the accumulation of char in the pipe can be suppressed.
- the assist gas discharge portions 59a, 59b, 59c, 59d discharge the replacement gas and the inert gas corresponding to the volume due to the movement of the char.
- the combustible gas from which the char has been separated by the char recovery device 13 is freed of impurities such as sulfur compounds, nitrogen compounds, and halides in the gas purification facility 14 to produce fuel gas.
- the compressor 61 compresses the air, supplies the air to the combustor 62, the compressed air supplied from the compressor 61 in the combustor 62, and the fuel gas supplied from the gas purification equipment 14.
- Combustion generates combustion gas, and the turbine 63 is driven by this combustion gas, so that the generator 17 can be driven via the rotating shaft 64 to generate power.
- the exhaust gas discharged from the turbine 63 in the gas turbine equipment 15 generates steam by performing heat exchange in the exhaust heat recovery boiler 18, and supplies the generated steam to the steam turbine equipment 16.
- the turbine 69 is driven by the steam supplied from the exhaust heat recovery boiler 18, so that the generator 17 can be driven via the rotating shaft 64 to generate power.
- the bin 44 that can collect and distribute char and the three char discharge units disposed at a predetermined inclination angle ⁇ that can discharge the char to the bin 44 by gravity drop.
- Lines 47, 49 a, 49 b, four switching lines 51 a, 51 b, 51 c, 51 d arranged with a predetermined inclination angle ⁇ that can supply the char collected or stored in the bin 44 by gravity drop, and the char discharge line 47 , 49a and 49b are provided with assist gas supply units 54, 55a, 55b, 58a, 58b, 58c, and 58d as assist devices for assisting the flow of the char that drops by gravity.
- the assist gas supply units 54, 55a, 55b drop through the char discharge lines 47, 49a, 49b. Since the char flow assists the char, the char appropriately flows through the char discharge lines 47, 49a, and 49b, and suppresses the accumulation on the pipes constituting the char discharge lines 47, 49a, and 49b. be able to. As a result, the inclination angle of each char discharge line 47, 49a, 49b can be set large, the height of the apparatus can be suppressed, and the apparatus can be miniaturized.
- assist gas supply units 58a, 58b, 58c, and 58d are provided as assist devices that assist the flow of the char that drops by gravity through the switching lines 51a, 51b, 51c, and 51d. ing. Accordingly, since the assist gas supply units 58a, 58b, 58c, and 58d assist the flow of the char that drops by gravity through the char supply lines 51a, 51b, 51c, and 51d, the char is supplied to the char supply lines 51a, 51b, 51c and 51d will flow appropriately, and deposition on the pipes constituting the char supply lines 51a, 51b, 51c and 51d can be suppressed. As a result, the inclination angle of each char supply line 51a, 51b, 51c, 51d can be set large, the height of the apparatus can be suppressed, and the apparatus can be miniaturized.
- the assist gas supply device is an assist gas supply unit 54, 55a, 55b, 58a, 58b, 58c, 58d that supplies an inert gas along the flow direction of the char. Therefore, by applying the assist gas supply units 54, 55a, 55b, 58a, 58b, 58c, and 58d for supplying an inert gas as the assist device, the device can be simplified and each line 47 can be simplified. , 49a, 49b, 51a, 51b, 51c, 51d without adversely affecting the char flowing therethrough, it is possible to construct an appropriate char transport system.
- the char discharge lines 47, 49a, 49b and the switching lines 51a, 51b, 51c, 51d are set to an inclination angle ⁇ of 60 degrees or less with respect to the horizontal direction.
- Assist gas supply units 54, 55a, 55b, 58a, 58b, 58c, and 58d are provided in the char discharge lines 47, 49a, and 49b and the switching lines 51a, 51b, 51c, and 51d set to the angle ⁇ . Therefore, the inclination angle of each char discharge line 47, 49a, 49b and each switching line 51a, 51b, 51c, 51d can be set to 60 degrees or less, the height of the apparatus can be suppressed, and the apparatus can be reduced in size.
- the cyclone 41 is connected to the gas generation line 38 for discharging the combustible gas from the coal gasification furnace 12, and the filter 42 a is connected to the first gas discharge line 46 in the cyclone 41.
- a bin 44 is connected to the first char discharge line 47 in the cyclone 41 and the second char discharge lines 49a, 49b in the filters 42a, 42b, and four switching lines 51a, 51b, 51c are connected to the bin 44.
- 51d are connected to the hoppers 45a, 45b, 45c, 45d, and the hoppers 45a, 45b, 45c, 45d are connected to the char return line 32 to supply assist gas to the char discharge lines 47, 49a, 49b.
- Portions 54, 55a, and 55b are provided, and switching lines 51a, 51b, and 51c are provided.
- Assist gas supply unit 58a to 51d, 58b, 58c, are provided 58d.
- the coarse char is separated from the produced gas by the cyclone 41, and the fine char is separated from the produced gas by the filters 42a and 42b.
- the char is stored in the bin 44 through the char discharge lines 47, 49a and 49b.
- the char stored in the bin 44 is supplied to the char return line 32 through the switching lines 51a, 51b, 51c, 51d.
- the inclination angles of the char discharge lines 47, 49a, 49b and the switching lines 51a, 51b, 51c, 51d can be set large, the height of the apparatus can be suppressed, and the apparatus can be downsized. be able to.
- FIG. 3 is a schematic configuration diagram showing the main part of the bin system according to the second embodiment of the present invention.
- symbol is attached
- the first char discharge line 47 includes a first straight portion 101 and a second straight portion 102, and an inclined portion 103 that connects the straight portions 101 and 102.
- the inclined portion 103 is arranged to be inclined by a predetermined angle ⁇ with respect to the horizontal direction.
- the assist gas supply apparatus according to the present embodiment supplies an inert gas along the lower surface of the inner periphery of the pipe constituting the first char discharge line 47.
- the inclined part 103 of the first char discharge line 47 has an assist gas supply part 121 attached to the lower part and an assist gas discharge part 56 attached to the tip part (lower end part).
- the assist gas supply unit 121 includes a gas supply pipe 122 that supplies an inert gas, and a plurality (three in the present embodiment) of gas injection formed at predetermined intervals in the longitudinal direction of the gas supply pipe 122.
- Each of the gas injection nozzles 123 enters the inclined portion 103 and supplies an inert gas toward the tip end side along the inner peripheral lower surface of the pipe constituting the inclined portion 103. Can do.
- the char flows down to the first char discharge line 47 due to gravity drop, and is stored in the bin 44 through the first straight portion 101, the inclined portion 103, and the second straight portion 102.
- the assist gas supply unit 121 forms the first char discharge line 47 because the inert gas is supplied from each gas injection nozzle 123 along the lower surface in the inclined portion 103 toward the flow direction of the char.
- the flow of char that moves along the inner lower surface of the pipe is promoted, and deposition can be suppressed.
- the assist gas supply unit 121 serving as the assist gas supply device supplies the inert gas along the inner peripheral lower surface of the pipe constituting the first char discharge line 47. ing.
- the char moves along the inner peripheral lower surface of the pipe constituting the first char discharge line 47.
- the char is rubbed between the char and the pipe. The resistance is reduced, the char flow is made smooth, and the accumulation of char inside the pipe can be prevented.
- FIG. 4 is a schematic configuration diagram showing the main part of the bin system according to the third embodiment of the present invention.
- symbol is attached
- the first char discharge line 47 includes a first straight portion 101 and a second straight portion 102, and an inclined portion 103 that connects the straight portions 101 and 102.
- the inclined portion 103 is arranged to be inclined by a predetermined angle ⁇ with respect to the horizontal direction.
- the assist gas supply device of the present embodiment is provided with an assist gas chamber in the lower part of the pipe constituting the first char discharge line 47, and the inert gas is supplied from the assist gas chamber to the inner peripheral lower surface of the pipe. ing.
- the inclined gas 103 of the first char discharge line 47 is provided with an assist gas supply unit 131 at the bottom.
- the assist gas supply unit 131 includes a gas supply pipe 132 that supplies an inert gas, and an assist gas chamber 133 that is fixed to the lower portion of the inclined portion 103 and is connected to the tip of the gas supply pipe 132.
- the assist gas chamber 133 is in communication with the pipe constituting the inclined portion 103 of the first char discharge line 47.
- a porous plate 134 is laid along the longitudinal direction at the lower portion inside. Therefore, an inert gas can be supplied from the assist gas chamber 133 between the lower surface in the pipe of the inclined portion 103 and the porous plate 134.
- the porous plate 134 is preferably a porous medium (canvas, sintered metal, sintered wire mesh, etc.) that prevents the char flowing through the first char discharge line 47 from flowing into the assist gas chamber.
- the char flows down to the first char discharge line 47 due to gravity drop, and is stored in the bin 44 through the first straight portion 101, the inclined portion 103, and the second straight portion 102.
- the assist gas supply unit 131 is supplied with an inert gas from the assist gas chamber 133 between the lower surface in the inclined portion 103 and the porous plate 134. Then, this inert gas is supplied to the space between the lower surface in the inclined portion 103 and the porous plate 134 and flows out to the surface of the porous plate 134, and the piping of the first char discharge line 47 is formed.
- the assist gas chamber 133 is provided in the lower part of the pipe constituting the first char discharge line 47, and the inert gas is supplied from the assist gas chamber 133 to the inner peripheral lower surface of the pipe. Supply.
- the inert gas is supplied from the assist gas chamber 133 provided in the lower part of the pipe constituting the first char discharge line 47 to the inner peripheral lower surface of the pipe, so that the char flowing along the inner peripheral lower surface of the pipe is generated.
- This inert gas reduces the wall friction resistance and the friction in the char powder, and can flow smoothly and prevent accumulation of powder in the pipe.
- FIG. 5 is a schematic configuration diagram showing the main part of the bin system according to the fourth embodiment of the present invention.
- symbol is attached
- the first char discharge line 47 includes a first straight portion 101 and a second straight portion 102, and an inclined portion 103 that connects the straight portions 101 and 102.
- the inclined portion 103 is arranged to be inclined by a predetermined angle ⁇ with respect to the horizontal direction.
- the assist gas supply apparatus of a present Example is changing the supply amount of an inert gas according to the flow volume of char.
- the inclined gas 103 of the char discharge line 47 is provided with an assist gas supply unit 141 at the bottom.
- an assist gas chamber 142 is fixed below the inclined portion 103, and a plurality (three in this example) of gases in the char flow direction of the first char discharge line 47 are separated by the partition plate 143.
- Chambers 144a, 144b, and 144c are partitioned.
- the assist gas chamber 142 (gas chambers 144 a, 144 b, 144 c) communicates with the pipe constituting the inclined portion 103 of the first char discharge line 47.
- the pipe constituting the inclined portion 103 of the first char discharge line 47 is provided with a porous plate 134 along the longitudinal direction in the lower part of the inside, and is partitioned by the partition plate 143 of each assist gas chamber 144a, 144b, 144c. It has been. Therefore, the inert gas can be supplied to the lower surface of the inclined portion 103 in the pipe for each of the assist gas chambers 144a, 144b, and 144c through the porous plate 134.
- a gas supply pipe 145 that supplies an inert gas has a tip portion branched into three branch pipes 145a, 145b, and 145c, and is connected to gas chambers 144a, 144b, and 144c, respectively.
- flow control valves 146a, 146b, 146c are attached to the branch pipes 145a, 145b, 145c.
- the gas supply pipe 145 is equipped with a shut-off valve 147 and a check valve 148.
- the flow rate adjustment valves 146a, 146b, 146c and the shutoff valve 147 can be controlled to open and close by a control device (not shown).
- the char flows down to the first char discharge line 47 due to gravity drop, and is collected or stored in the bin 44 through the first straight portion 101, the inclined portion 103, and the second straight portion 102.
- the assist gas supply unit 141 supplies an inert gas from the gas chambers 144a, 144b, and 144c of the assist gas chamber 142 between the lower surface in the inclined portion 103 and the partition plate 143. Then, this inert gas flows out from the surface of the porous plate 134 on the upper surface of each assist gas chamber 144a, 144b, 144c into the inclined portion 103 and moves along the inner lower surface of the pipe constituting the first char discharge line 47.
- a sensor detects the flow rate of the char flowing through the first char discharge line 47 and outputs it to the control device, which controls the flow rate adjusting valves 146a, 146b, 146c according to the char flow rate. May be adjusted to adjust the amount of inert gas supplied to each gas chamber 144a, 144b, 144c. That is, it is assumed that the opening of the flow rate adjusting valves 146a, 146b, and 146c is changed according to the flow rate of the char flowing through the first char discharge line 47 so that the char can be discharged stably. The amount of inert gas supplied by changing the opening degree of the flow rate adjusting valves 146a, 146b, 146c depending on the discharge state of the char is set to the necessary minimum flow rate.
- the amount of inert gas supplied to each gas chamber 144a, 144b, 144c is made uniform.
- the gas chamber 144a The amount of the inert gas supplied to the gas chamber 144 may be increased, and the amount of the inert gas supplied to the gas chamber 144c may be reduced.
- the supply amount of the inert gas can be changed according to the flow rate of the char.
- the char transport speed can be maintained at an appropriate speed, and the amount of inert gas used can be reduced to reduce operating costs. be able to.
- the configuration and order of the assist gas supply device valve are shown, but the configuration and order are not limited thereto.
- the assist device is an assist gas supply device
- the present invention is not limited to this configuration, and may be a vibration device that vibrates a pipe, a porous plate, or the like.
- the bin system and the char recovery device according to the present invention can be downsized by tilting the powder conveyance line by providing an assist device that assists the flow of the powder that falls by gravity in the powder conveyance line.
- the bin system can be applied not only to a coal gasification combined power generation facility but also to facilities that handle powders such as pulverized coal, unburned coal (fly ash), cement, and food.
Abstract
Description
12 石炭ガス化炉
13 チャー回収装置
14 ガス精製設備
15 ガスタービン設備
16 蒸気タービン設備
17 発電機
18 排熱回収ボイラ
19 ガス浄化装置
41 サイクロン(第1集塵装置)
42a 第1フィルタ(第2集塵装置)
42b 第2フィルタ(第2集塵装置)
43a,43b ロータリバルブ
44 ビン(密閉容器)
45a,45b,45c,45d ホッパ
46 第1ガス排出ライン
47 第1チャー排出ライン(粉体排出ライン、第1未燃分排出ライン)
48 第2ガス排出ライン
49a,49b 第2チャー排出ライン(粉体排出ライン)
50 第1均圧ライン
51a,51b,51c,51d 切替ライン(粉体供給ライン)
54,55a,55b,58a,58b,58c,58d,121,131,141 アシストガス供給部(アシスト装置、アシストガス供給装置)
56,57a,57b,59a,59b,59c,59d アシストガス排出部
101,102 直線部
103 傾斜部
Claims (9)
- 粉体を集合または貯留可能な容器と、
粉体を重力落下により前記容器に排出可能な所定の傾斜角度をもって配置される複数の粉体排出ラインと、
前記容器に集合または貯留された粉体を重力落下により供給可能な所定の傾斜角度をもって配置される複数の粉体供給ラインと、
前記複数の粉体排出ラインを重力落下する粉体の流動をアシストするアシスト装置と、
を備えることを特徴とするビンシステム。 - 粉体を集合または貯留可能な容器と、
粉体を重力落下により前記容器に排出可能な所定の傾斜角度をもって配置される複数の粉体排出ラインと、
前記容器に集合または貯留された粉体を重力落下により供給可能な所定の傾斜角度をもって配置される複数の粉体供給ラインと、
前記複数の粉体供給ラインを重力落下する粉体の流動をアシストするアシスト装置と、
を備えることを特徴とするビンシステム。 - 前記アシスト装置は、粉体の流動方向に沿って不活性ガスを供給するアシストガス供給装置を有することを特徴とする請求項1または2に記載のビンシステム。
- 前記アシストガス供給装置は、前記粉体排出ラインまたは前記粉体供給ラインを構成する配管における内周下面に沿って不活性ガスを供給することを特徴とする請求項3に記載のビンシステム。
- 前記アシストガス供給装置は、前記粉体排出ラインまたは前記粉体供給ラインを構成する配管の下部にアシストガス室を設け、該アシストガス室から前記配管における内周下面に不活性ガスを供給することを特徴とする請求項3に記載のビンシステム。
- 前記アシストガス供給装置は、粉体の流量に応じて不活性ガスの供給量を変更することを特徴とする請求項3から5のいずれか一つに記載のビンシステム。
- 前記粉体排出ラインまたは前記粉体供給ラインは、傾斜角度が水平方向に対して60度以下に設定され、この傾斜角度に設定された前記ラインに前記アシスト装置が設けられることを特徴とする請求項1から6のいずれか一つに記載のビンシステム。
- 前記粉体排出ラインまたは前記粉体供給ラインは、傾斜角度が水平方向に対して60度以下に設定され、この傾斜角度に設定された前記ラインに前記アシスト装置が設けられると共にアシストガス排出部が設けられることを特徴とする請求項1から7のいずれか一つに記載のビンシステム。
- 石炭をガス化して生成された生成ガスから石炭の未燃分を回収するチャー回収装置であって、
生成ガスの生成ラインに連結される第1集塵装置と、
該第1集塵装置における第1ガス排出ラインに連結される第2集塵装置と、
前記第1集塵装置における第1未燃分排出ライン及び前記第2集塵装置における第2未反応分排出ラインに連結されるビンと、
該ビンから未反応分を未反応分戻しラインに供給する複数の未反応分供給ラインと、
前記各未反応分排出ラインまたは前記未反応分供給ラインを重力落下する未反応分の流動をアシストするアシスト装置と、
を備えることを特徴とするチャー回収装置。
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