CN203048897U - IGCC (integrated gasification combined cycle) polygeneration device based on low metamorphic coal pyrolysis and gasification - Google Patents

IGCC (integrated gasification combined cycle) polygeneration device based on low metamorphic coal pyrolysis and gasification Download PDF

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Publication number
CN203048897U
CN203048897U CN2012206761337U CN201220676133U CN203048897U CN 203048897 U CN203048897 U CN 203048897U CN 2012206761337 U CN2012206761337 U CN 2012206761337U CN 201220676133 U CN201220676133 U CN 201220676133U CN 203048897 U CN203048897 U CN 203048897U
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coal
gasification
igcc
pyrolysis
polygeneration
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CN2012206761337U
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毛少祥
毕可军
柏林红
孔北方
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SHAANXI HUAXIANG ENERGY TECHNOLOGY GROUP Co Ltd
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SHAANXI HUAXIANG ENERGY TECHNOLOGY GROUP Co Ltd
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/14Combined heat and power generation [CHP]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/16Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
    • Y02E20/18Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/10Process efficiency
    • Y02P20/129Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines

Abstract

The utility model discloses an IGCC (integrated gasification combined cycle) polygeneration device based on low metamorphic coal pyrolysis and gasification. The IGCC polygeneration device comprises a pyrolysis/gasification system, a coal purification system, a circulating fluidized bed boiler, and a gas turbine/steam turbine system, wherein the low metamorphic coal is converted into gas, tar and semicoke after low-temperature pyrolysis and partial gasification of air; and then the IGCC polygeneration technology is developed by the semicoke with a higher calorific value and the gas in an extension manner. By adopting the IGCC polygeneration device, clean power generation and cogeneration of the tar, sulphur and other chemical products are carried out; the quality transformation product of the low metamorphic coal is fully utilized; integration of matter transformation and energy conversion is achieved; and the IGCC polygeneration device is high in resource utilization rate, high in heat energy efficiency, and suitable for low metamorphic coal such as peat, brown coal, long flame coal, non-sticky coal; the particle size range of the material is 0-8mm; the high-temperature gas generated by a fluidized bed gasifier contains a lot of hydrogen; hydropyrolysis of the pulverized coal is achieved; and the tar recovery rate can be up to over 12%.

Description

A kind of IGCC multi-joint-production apparatus based on low rotten pulverized coal pyrolysis gasification
Technical field
The utility model relates to a kind of IGCC multi-production process device, is specifically related to a kind of IGCC multi-joint-production apparatus based on low rotten pulverized coal pyrolysis gasification.
Background technology
Integrated gasification combined cycle for power generation system (IGCC) compares with traditional coal fired power generation device; have that unit heat consumption is low, water is economized, it is few to take up an area of; sulphur, oxynitride and discharge quantity of particulate matter are low, the byproduct of gasification can be realized advantages such as Coal Chemical Industry comprehensive utilization; can solve a series of significant problems of energy field preferably; as energy supply and demand and consumption structure, ecological environmental protection and efficient, low consumption power station etc., will become the competitive generation mode of China.But IGCC investment cost height can't be competed with conventional coal power station economically, and the operation underaction generally can only be used as the base load power station.Coal-based polygenerations systeme can be realized the integrated of material conversion and energy transformation with coal chemical technology and IGCC coupling, eliminates conventional coal burning pollution thing discharging, solves the coal burning pollution problem more economically.Therefore, the IGCC multi-production process is the important channel that promotes China IGCC development.
The IGCC multi-production process is with the leading coal-based chemical system of gasification, and adopting raw material mainly is bituminous coal, hard coal.Yet, for low-disintegration coal, as mud coal, brown coal, long-flame coal etc., better development IGCC multi-production process how, how especially low rotten fine coal develops the problem of IGCC multi-production process, needs further further investigation.
China's low-disintegration coal aboundresources.Low-disintegration coal has characteristics such as chemically reactive is good, high volatile, golf calorific value, no adhesion, is the desirable feedstock of low temperature pyrogenation.Utilizing low-disintegration coal for raw material carries out low temperature pyrogenation, obtain products such as semicoke, coal tar and coal gas, is the main technique of present low-disintegration coal development Coal Chemical Industry.How to optimize technology, prolong industrial chain, it is the main research topic of current coal chemical industry enterprises that the low rotten fine coal comprehensive high-efficiency of raising utilizes level.Developing a kind of IGCC multi-production process that gasifies based on low rotten pulverized coal pyrolysis can contribute for the low rotten fine coal branch matter of Chinese large-sized transforms the Poly-generation recycling economy, and the low comprehensive utilization of going bad fine coal of China is had very important realistic meaning.
The utility model content
The purpose of this utility model is to provide a kind of device that can take full advantage of the product that low rotten fine coal branch matter transforms, realize the low rotten comprehensive clean utilization of fine coal based on the IGCC multi-joint-production apparatus of low rotten pulverized coal pyrolysis gasification, material conversion and energy transformation integrated, the resource utilization height, the heat energy efficiency height.
For achieving the above object, device of the present utility model comprises: comprise pyrolysis/gasification system, gas cleaning system, circular fluid bed, internal combustion turbine/steam turbine system;
Described pyrolysis/gasification system comprises dryer, moving bed pyrolysis stove, the fluidized-bed gasification furnace that links to each other successively;
Described gas cleaning system comprises tornado dust collector, high temperature degree of depth fly-ash separator, quenching column and the thionizer that links to each other successively, and wherein tornado dust collector are connected with the moving bed pyrolysis stove;
The entrance of described circular fluid bed is connected with fluidized-bed gasification furnace, and the exhanst gas outlet of circular fluid bed is connected with dryer by the road;
Described internal combustion turbine/steam turbine system is made up of internal combustion turbine, waste heat boiler, 1# steam turbine, 2# steam turbine, wherein the entrance of internal combustion turbine is connected with the outlet of thionizer, the exhanst gas outlet of internal combustion turbine is connected with waste heat boiler, the vapour outlet of waste heat boiler is connected with the 1# steam turbine, the exhanst gas outlet of waste heat boiler is connected with the cylinder dryer, and described 2# steam turbine links to each other with the vapour outlet of circular fluid bed.
The shell material of described hot precipitator is high-temperature alloy steel, is made up of air-purifying chamber, sintering metal solarium and ash bucket.
At first will hang down rotten fine coal by the cylinder drying machine drying, the stack gas that the oven dry medium adopts circular fluid bed and waste heat boiler to eject; Dried fine coal is delivered to the moving bed pyrolysis stove, and fine coal is through array overlapped material spreading cone, sliding material basin, evenly landing repeatedly, and the constantly heating gas that produces with the fluidisation bed gasification furnace heat exchange of making a circulation repeatedly makes fine coal generation pyrolytic reaction; The semicoke that pyrolysis produces all enters fluidized-bed gasification furnace, carries out partial gasification by air and steam; Send into the circular fluid bed internal combustion by the hot semicoke that fluidized-bed gasification furnace air partial gasification produces, the steam of circular fluid bed production enters the 2# steam turbine power generation; Coal gas, the tarry vapours that the pyrolysis of moving bed pyrolysis stove produces and the coke breeze of carrying secretly are by the fly-ash separator dedusting; Pyrolysis coal gas and tarry vapours after dedusting enter Quench in the quenching column, and the tar that condensation is got off and water carry out the Separation and Recovery tar products; Coal gas after the Quench enters the interior desulfurization of thionizer and reclaims desulfurization product; Gas after the desulfurization enters gas turbine power generation, and the stack gas of discharge is produced steam by the waste heat boiler recovery waste heat, and steam is sent to the 1# steam turbine power generation.
The utility model will hang down rotten fine coal through low temperature pyrogenation and air partial gasification, and branch matter is converted into coal gas, tar, semicoke, again with semicoke and the coal gas infiltration and development IGCC multi-production process of high heating value.
Characteristics of the present utility model and advantage are embodied in:
1) but clean electric power generation and coproduction tar, sulphur and other Chemicals, the product that low rotten fine coal branch matter is transformed takes full advantage of, and realizes the integrated of material conversion and energy transformation, resource utilization height, heat energy efficiency height.
2) be suitable for low rotten fine coal such as mud coal, brown coal, long-flame coal, non caking coal, raw material granularity scope 0-8mm.
3) coal gas of high temperature of fluidized-bed gasification furnace output is rich in a large amount of hydrogen, realizes the fine coal hydropyrolysis, and the tar rate of recovery can reach more than 12%.
4) possesses the ability of working pressure being brought up to middle and high voltage levels.
5) the production process water loss is little.
6) capital investment and working cost are simplified, are reduced in technical process.
Description of drawings
Fig. 1 is one-piece construction block diagram of the present utility model.
Wherein, 1, the cylinder dryer, 2, the moving bed pyrolysis stove, 3, fluidized-bed gasification furnace, 4, circular fluid bed, 5, tornado dust collector, 6, high temperature degree of depth fly-ash separator, 7, quenching column, 8, thionizer, 9, internal combustion turbine, 10, waste heat boiler, 11, the 1# steam turbine, 12, the 2# steam turbine.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further detail.
Referring to Fig. 1, device of the present utility model comprises pyrolysis/gasification system, gas cleaning system, circular fluid bed, internal combustion turbine/steam turbine system;
Described pyrolysis/gasification system comprises cylinder dryer 1, moving bed pyrolysis stove 2, the fluidized-bed gasification furnace 3 that links to each other successively;
Described gas cleaning system comprises tornado dust collector 5, high temperature degree of depth fly-ash separator 6, quenching column 7 and the thionizer 8 that links to each other successively, and wherein tornado dust collector 5 are connected with moving bed pyrolysis stove 2;
The entrance of described circular fluid bed 4 is connected with fluidized-bed gasification furnace 3, and the exhanst gas outlet of circular fluid bed is connected with cylinder dryer 1 by the road;
Described internal combustion turbine/steam turbine system is made up of internal combustion turbine 9, waste heat boiler 10,1# steam turbine 11,2# steam turbine 12, wherein the entrance of internal combustion turbine 9 is connected with the outlet of thionizer 8, the exhanst gas outlet of internal combustion turbine 9 is connected with waste heat boiler 10, the waste heat boiler vapour outlet connects 1# steam turbine 11, the exhanst gas outlet of waste heat boiler 10 is connected with cylinder dryer 1, and described 2# steam turbine 12 links to each other with the vapour outlet of circular fluid bed 4.
Coal gas and tarry vapours high-effective dust-removing under hot conditions in the utility model.High temperature degree of depth fly-ash separator 6 apparatus casing materials are high-temperature alloy steel, mainly are made up of air-purifying chamber, sintering metal solarium, ash bucket.The coal gas of Jing Huaing does not enter fly-ash separator from ash bucket, enters sintered metal net by ash bucket and purifies, and flows out fly-ash separator from the outlet of air-purifying chamber.The sintering metal solarium adopts round shape so that air-flow flows with piston-like in equipment, avoid causing the dead angle, improve device security, and internal surface is smooth, not dust stratification.Ash bucket is conical, and the inclination angle is greater than 60 °.The fly-ash separator of design one side like this can bear higher pressure, guarantees not dust stratification on the one hand.
High temperature degree of depth fly-ash separator 6 is a kind of high-efficiency dust removers, and efficiency of dust collection is more than 98%.Through high temperature degree of depth fly-ash separator 6, the dustiness of coal tar is less than 0.1%, and the dust content in the coal gas is by original 5g/Nm 3Drop to 5.0mg/Nm 3, enter Quench in the quenching column 7 then, avoid occurring the greasy filth that is difficult to handle.
At first with granularity less than the low rotten fine coal of 8mm by roller dryer 1 dry to free moisture less than 5%, the stack gas that the oven dry medium adopts follow-up circular fluid bed 4 and waste heat boiler 10 to eject; Dried fine coal is delivered to moving bed pyrolysis stove 2, fine coal is through overlapped material spreading cone, the sliding material basin of array, evenly landing repeatedly, the constantly heating gas that produces with fluidisation bed gasification furnace 3 heat exchange of making a circulation repeatedly makes fine coal at 500-600 ℃ pyrolytic reaction take place; The semicoke that pyrolysis produces all enters fluidized-bed gasification furnace 3, carries out partial gasification by air and steam; Send into circular fluid bed 4 burnings by the hot semicoke that fluidized-bed gasification furnace air partial gasification produces, the steam that circular fluid bed 4 produces enters 11 generatings of 2# steam turbine, and the lime-ash that burning produces is for the production of material of construction such as non-burning brick, cement; Coal gas, the tarry vapours that pyrolysis produces and the coke breeze of carrying secretly are undertaken elementary and degree of depth dedusting by tornado dust collector 5, high temperature degree of depth fly-ash separator 6 respectively, make finally that dust content reaches 5mg/Nm in the coal gas 3Below; Pyrolysis coal gas and tarry vapours after dedusting enter Quench in the quenching column 7, and the tar that condensation is got off and water carry out the Separation and Recovery tar products; Cooled coal gas enters thionizer 8 interior desulfurization and reclaims desulfurization product; Gas after the desulfurization (can be made with extra care synthetic gas according to producing a needs part, as the synthetic raw gas of Chemicals, as synthetic ammonia, methyl alcohol etc.) enter internal combustion turbine 9 generatings, to discharge stack gas and produce steam by waste heat boiler 10 recovery waste heats, steam is sent to 11 generatings of 1# steam turbine, and flue gas is sent into cylinder dryer 1.

Claims (2)

1. the IGCC multi-joint-production apparatus based on low rotten pulverized coal pyrolysis gasification is characterized in that: comprise pyrolysis/gasification system, gas cleaning system, circular fluid bed, internal combustion turbine/steam turbine system;
Described pyrolysis/gasification system comprises dryer (1), moving bed pyrolysis stove (2), the fluidized-bed gasification furnace (3) that links to each other successively;
Described gas cleaning system comprises tornado dust collector (5), high temperature degree of depth fly-ash separator (6), quenching column (7) and the thionizer (8) that links to each other successively, and wherein tornado dust collector (5) are connected with moving bed pyrolysis stove (2);
The entrance of described circular fluid bed (4) is connected with fluidized-bed gasification furnace (3), and the exhanst gas outlet of circular fluid bed is connected with dryer (1) by the road;
Described internal combustion turbine/steam turbine system is made up of internal combustion turbine (9), waste heat boiler (10), 1# steam turbine (11), 2# steam turbine (12), wherein the entrance of internal combustion turbine (9) is connected with the outlet of thionizer (8), the exhanst gas outlet of internal combustion turbine (9) is connected with waste heat boiler (10), the vapour outlet of waste heat boiler (10) is connected with 1# steam turbine (11), the exhanst gas outlet of waste heat boiler (10) is connected with cylinder dryer (1), and described 2# steam turbine (12) links to each other with the vapour outlet of circular fluid bed (4).
2. according to claim 1 based on the IGCC multi-joint-production apparatus that hangs down rotten pulverized coal pyrolysis gasification, it is characterized in that: the shell material of described high temperature degree of depth fly-ash separator (6) is high-temperature alloy steel, is made up of air-purifying chamber, sintering metal solarium and ash bucket.
CN2012206761337U 2012-12-10 2012-12-10 IGCC (integrated gasification combined cycle) polygeneration device based on low metamorphic coal pyrolysis and gasification Expired - Lifetime CN203048897U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103013576A (en) * 2012-12-10 2013-04-03 陕西华祥能源科技集团有限公司 IGCC (Integrated Gasification Combined Cycle) poly-generation device and method based on pyrolysis and gasification of low metamorphic powdered coal
CN105509059A (en) * 2015-12-22 2016-04-20 北京神雾环境能源科技集团股份有限公司 Power generation system and power generation method
CN105505475A (en) * 2016-01-30 2016-04-20 农业部规划设计研究院 Biomass gasification-dry distillation coupling carbon gas-oil co-production technology
CN108410509A (en) * 2018-05-14 2018-08-17 上海谊快能源技术有限公司 The coke powder and coal gas environment-protection production method to be gasified based on coal powder pure oxygen half
CN109628151A (en) * 2018-11-02 2019-04-16 中国石油大学(华东) Coke powder Y type air flow bed clean and effective Gasification Polygeneration System technique

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103013576A (en) * 2012-12-10 2013-04-03 陕西华祥能源科技集团有限公司 IGCC (Integrated Gasification Combined Cycle) poly-generation device and method based on pyrolysis and gasification of low metamorphic powdered coal
CN105509059A (en) * 2015-12-22 2016-04-20 北京神雾环境能源科技集团股份有限公司 Power generation system and power generation method
CN105505475A (en) * 2016-01-30 2016-04-20 农业部规划设计研究院 Biomass gasification-dry distillation coupling carbon gas-oil co-production technology
CN108410509A (en) * 2018-05-14 2018-08-17 上海谊快能源技术有限公司 The coke powder and coal gas environment-protection production method to be gasified based on coal powder pure oxygen half
CN108410509B (en) * 2018-05-14 2024-01-23 浙江大学 Coke powder and coal gas environment-friendly production method based on pulverized coal pure oxygen semi-gasification
CN109628151A (en) * 2018-11-02 2019-04-16 中国石油大学(华东) Coke powder Y type air flow bed clean and effective Gasification Polygeneration System technique

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Denomination of utility model: IGCC (Integrated Gasification Combined Cycle) poly-generation device and method based on pyrolysis and gasification of low metamorphic powdered coal

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