CN106401749A - IGCC-based near zero emission coal-fired power generation system and method - Google Patents

IGCC-based near zero emission coal-fired power generation system and method Download PDF

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Publication number
CN106401749A
CN106401749A CN201610888933.8A CN201610888933A CN106401749A CN 106401749 A CN106401749 A CN 106401749A CN 201610888933 A CN201610888933 A CN 201610888933A CN 106401749 A CN106401749 A CN 106401749A
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gas
outlet
connects
steam
coal
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CN106401749B (en
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程健
许世森
王洪建
张瑞云
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Huaneng Clean Energy Research Institute
Huaneng Group Technology Innovation Center Co Ltd
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Huaneng Clean Energy Research Institute
Huaneng Group Technology Innovation Center Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • 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
    • B65G5/00—Storing fluids in natural or artificial cavities or chambers in the earth
    • 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
    • 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
    • C10J3/82—Gas withdrawal means
    • C10J3/84—Gas withdrawal means with means for removing dust or tar from the gas
    • 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
    • C10J3/86—Other features combined with waste-heat boilers
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/164—Injecting CO2 or carbonated water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K11/00—Plants characterised by the engines being structurally combined with boilers or condensers
    • F01K11/02—Plants characterised by the engines being structurally combined with boilers or condensers the engines being turbines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
    • F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
    • F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
    • F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/04—Gas-turbine plants characterised by the use of combustion products as the working fluid having a turbine driving a compressor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
    • F02C3/22—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products the fuel or oxidant being gaseous at standard temperature and pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
    • F02C3/20—Gas-turbine plants characterised by the use of combustion products as the working fluid using a special fuel, oxidant, or dilution fluid to generate the combustion products
    • F02C3/30—Adding water, steam or other fluids for influencing combustion, e.g. to obtain cleaner exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
    • F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
    • 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
    • C10J2300/16—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
    • C10J2300/165—Conversion of synthesis gas to energy integrated with a gas turbine or gas motor
    • 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
    • C10J2300/1671—Integration of gasification processes with another plant or parts within the plant with the production of electricity
    • C10J2300/1675—Integration of gasification processes with another plant or parts within the plant with the production of electricity making use of a steam turbine
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/40—Capture or disposal of greenhouse gases of CO2
    • 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]
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/30—Hydrogen technology
    • Y02E60/32—Hydrogen storage
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/10—Process efficiency
    • Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

Disclosed are IGCC-based near zero emission coal-fired power generation system and method. According to the system, CO2 capture before combustion can be realized, the captured CO2 is used for oil displacement, gas displacement and burying, heat generated by a gasifier is fully used, the comprehensive efficiency of the system can be greatly improved, and near-zero emissions of coal-fired power generation is realized. By applying the IGCC-based near zero emission coal-fired power generation system and method, the CO2 capture rate of the system is greater than 90%, the power generation efficiency is greater than 40%, the environmental characteristics of the integrated gasification combined cycle (IGCC) power generation system are greatly improved, and the storage and resource utilization of CO2 are realized.

Description

A kind of near-zero release coal generating system based on IGCC and method
Technical field
The invention belongs to technical field of power generation, more particularly, to a kind of near-zero release coal generating system based on IGCC and side Method.
Background technology
Global Environmental Problems with climate change as core are increasingly serious, have become as the master threatening human kind sustainable development Want one of factor, cut down greenhouse gas emission becomes the focus of current international community concern with mitigation of climate change.With the whole world Greenhouse gas emission is increasingly paid close attention to,《The Kyoto Protocol》、《Bali's route map》Hold, specify that the whole world further CO2Emission reduction targets and timetable, have promoted the development of global low-carbon economy.
Integral gasification combined circulation technology (Integrated Gasification Combined Cycle, IGCC it is) generation technology that the Coal Gasification Technology of cleaning is combined with efficient Gas-steam Combined Cycle, generating efficiency is high And room for promotion is big, achievable pollutant near-zero release, is one of important development direction of high-efficiency cleaning coal-fired power generator set.
Integrated gasification combined cycle plants technology (IGCC) is with CO before burning2The use in conjunction of trapping, is capable of the system that generates electricity The CO of system2Near-zero release is it is considered to be one of important path of reducing discharging of greenhouse gases depth.With respect to other carbon trapping technique roads Line, CO before burning2The required gas pressure processing of trapping is high, CO2Concentration is high, impurity is few, is conducive to absorption process or other separation side Method is to CO2Removing, also can accordingly reduce in the increment of investment, operating cost and energy consumption.CO before burning2Trapping technique is fully sharp With CO in producing synthesis gas from coal2High concentration and high pressure so that CO2Trapping energy consumption significantly decline, add IGCC and phase The hydrogen gas generation technology answered improves generating efficiency, realizes CO on the premise of the overall efficiency keeping power plant does not reduce2Catch Collect and seal up for safekeeping, be the important development direction of following green low-carbon generation technology.
Content of the invention
It is an object of the invention to provide a kind of near-zero release coal generating system based on IGCC and method, based on whole Body gasification combined-cycle system achieves CO before burning2Trapping, and take full advantage of the high-temperature nuclei producing in gasification furnace The heat of gas, realizes the cascade utilization of system thermal by waste heat boiler, enables to the CO of system2Capture rate be more than 90%, generating efficiency is more than 40%, substantially increases the environmental protection characteristic of integrated gasification combined cycle for power generation system, realizes simultaneously CO2Seal up for safekeeping and recycling.
In order to achieve the above object, the present invention adopts the following technical scheme that：
A kind of near-zero release coal generating system based on IGCC, including air separation unit 1, the entrance of air separation unit 1 is passed through Air, the oxygen outlet of air separation unit 1 connects the oxygen intake of gasification furnace 2, and the nitrogen outlet of air separation unit 1 connects nitrogen separation device 3； The coal entrance of gasification furnace 2 adds coal, and the steam inlet of gasification furnace 2 connects the steam (vapor) outlet of waste heat boiler 4, the synthesis gas of gasification furnace 2 Outlet connects the high-temperature gas entrance of high-temperature heat-exchanging 5；The one outlet of nitrogen separation device 3 connects the low temperature gas of high-temperature heat-exchanging 5 Body entrance, another outlet connects nitrogen gas recovering apparatus 6；The high-temperature gas outlet of high-temperature heat-exchanging 5 connects the entrance of dust arrester 7, The cryogenic gas outlet of high-temperature heat-exchanging 5 connects combustion chamber 13；The entrance of the outlet water receiving vapour converting means 8 of dust arrester 7；Steam The steam inlet of converting means 8 connects the steam (vapor) outlet of waste heat boiler 4, and the gas vent of water-gas shift device 8 connects desulfurization and decarburization dress Put 9 gas access；The H of desulfurization and decarburization device 92S outlet meets sulfur recovery unit 11, the CO of desulfurization and decarburization device 92Gas vent Connect and compress and liquefy device 10, the hydrogen-rich gas outlet of desulfurization and decarburization device 9 connects burning humidifier 12；The outlet of sulfur recovery unit 11 Output sulphur；The steam inlet of fuel humidifier 12 connects the steam (vapor) outlet of waste heat boiler 4, the hydrogen-rich gas outlet of fuel humidifier 12 Connect combustion chamber 13；The air intake of combustion chamber 13 connects the pressure-air outlet of compressor 14, and the gas outlet of combustion chamber 13 connects combustion The fuel gas inlet of gas turbine 15；The entrance of compressor 14 is passed through air；The outlet of combustion gas turbine 15 connects the High Temperature Gas of waste heat boiler 4 Body entrance, combustion gas turbine 15 is connected with the first generator 16, and the first generator 16 exports electric energy；The steam of waste heat boiler 4 goes out The steam inlet of mouth connection steam turbine 17, the feed-water intake of waste heat boiler 4 connects the feedwater outlet of steam turbine 17, waste heat pot It is passed through water in the water inlet of stove 4；Steam turbine 17 is connected with the second generator 18, the second generator 18 output electric energy；Compression Liquid CO of liquefying plant 102Outlet connects liquid CO2Conveying arrangement 19 liquid CO2Entrance, compresses and liquefies the liquid of device 10 generation State CO2It is input to liquid CO2In conveying arrangement 19, can be used for the displacement of reservoir oil and geological storage；Liquid CO2The outlet of conveying arrangement 19 is even Meet CO2Displacement petroleum installation 20, CO2Gas displacing coal-bed device 21 and CO2Geological storage device 22；CO2Displacement petroleum installation 20 Output oil, CO2Gas displacing coal-bed device 21 output coal bed gas.
The oxygen of in the air and nitrogen are carried out separating by described air separation unit 1 by Deep Cooling Method, and oxygen is transported to gasification In stove 2, nitrogen is fed in nitrogen separation device 3.
Reaction in described gasification furnace 2 generates synthesis gas, and it is H that synthesis gas mainly becomes2、H2O、CO、CO2、CH4、H2S、COS Deng.
The nitrogen being passed through can be worth and carries out separating by described nitrogen separation device 3 according to set proportion, and a road nitrogen is passed through To in combustion chamber 13, in addition a road nitrogen is passed in nitrogen gas recovering apparatus 6.
Described waste heat boiler 4, can recycle the heat of the high-temperature tail gas of combustion gas turbine 15, produce the steaming of HTHP Vapour.
Described high-temperature heat-exchanging 5, the cryogenic nitrogen that the high-temperature synthesis gas that gasification furnace 2 produces can be produced with air separation unit 1 Gas carries out heat exchange, improves the temperature of nitrogen, recycles the heat of synthesis gas.
Described nitrogen gas recovering apparatus 6, are made up of air accumulator, can store the nitrogen of air separation unit 1 generation.
Described dust arrester 7 adopts sack cleaner or electric cleaner or ceramic filter, the particle in removing synthesis gas Thing is so that mine dust content is less than 100mg/Nm3.
Described water-gas shift device 8, using resistant to sulfur water-gas shift technique, by water gas shift reation CO+H2O=H2+CO2 CO in synthesis gas is transformed to H2So that CO ratio is less than 0.5% in exit gas, wherein steam comes from waste heat boiler 4.
Described desulfurization and decarburization device 9 washes method or MDEA method, prepared hydrogen-rich gas, H in hydrogen-rich gas using low-temp methanol2S、 COS content is less than 1ppm.
Described compress and liquefy device 10, can be by gaseous CO2It is converted into the CO of liquid2, CO2Concentration be higher than 99%.
Described sulfur recovery unit 11, can be by H2S is decomposed into sulphur, reclaims sulphur component therein.
Described fuel humidifier 12, using steam method, by hydrogen-rich gas and some vapor produced by waste heat boiler 4 Mixed, improved H2Fuel wherein H2The content of O is so that H2The molar content of O>5%.
Described combustion chamber 13, hydrogen-rich gas, high temperature nitrogen and pressure-air are burnt wherein, produce high temperature combustion Gas.
Described compressor 14, combustion gas turbine 15 and the first generator 16, are installed on same axis, combustion gas turbine 15 exists Under the impact of high pressure-temperature combustion gas, rotational band dynamic pressure mechanism of qi 14 and the first generator 16 rotate, and compressor 14 makes the pressure of air More than 4Mpa is increased to by normal pressure, the first generator 16 then produces AC energy.
Described steam turbine 17 and the second generator 18, are installed on same axis, the HTHP that waste heat boiler 4 produces Steam impringement steam turbine 17 rotates, and steam turbine 17 drives the second generator 18 to rotate and produces electric energy.
Described liquid CO2Conveying arrangement 19, for loading liquid CO2The transport vehicle of storage tank or cargo ship.
Described CO2Displacement petroleum installation 20, can be by CO2It is injected into raising oil recovery in oil field.
Described CO2Gas displacing coal-bed device 21, can be by CO2It is injected in coal bed gas field, improve coal bed gas recovery ratio.
Described CO2Geological storage device 22, by CO2It is injected in the oil field of waste gas, by CO2Permanently sealed up for safekeeping.
A kind of method of work of near-zero release coal generating system based on IGCC described above, coal, steam and oxygen lead to Enter gasification furnace 2 and produce synthesis gas, the temperature of synthesis gas is 1000 DEG C, and group is divided into CO ≈ 60%, H2≈ 30%, CO2≈ 7%, remaining Group is divided into N2、H2S、COS、CH4Impurity gas；Synthesis gas first passes around high-temperature heat-exchanging 5 heat exchange, and temperature is reduced to less than 200 DEG C, Then pass to dust arrester 7 so that particulate matter component is less than 50mg/Nm3；It is passed in water-gas shift device 8 so that synthesizing again CO in gas<0.5%, H2>60%；Then it is passed into desulfurization and decarburization device 9 so that H2S and COS concentration is less than 1ppm, capture H2S reclaims sulphur therein by sulfur recovery unit 11；CO in removing synthesis gas in desulfurization and decarburization device 9 simultaneously2So that CO2 Purity be more than 90%, then pass to compress and liquefy in device 10, by compress and liquefy obtain liquid CO2, can be used for The displacement of reservoir oil and sealing up for safekeeping；H in the hydrogen-rich gas that desulfurization and decarburization device 9 produces2Content is more than 90%, and hydrogen-rich gas is through fuel humidifier 12 so that H in gas2O molar content>5%, then pass in combustion chamber 13；The nitrogen that air separation unit 1 produces is through nitrogen Separator 3,70% nitrogen is passed in nitrogen gas recovering apparatus 6, and remaining 30% is passed in high-temperature heat-exchanging 5 and is warming up to 500 DEG C, then it is passed in combustion chamber 13；Compressor 14 rotates under the drive of combustion gas turbine 15, by the air boosting of normal pressure To 5MPa, then pass in combustion chamber 13；In combustion chamber 13, hydrogen-rich gas is mixed with high temperature nitrogen and then and pressure-air Burnt, produce high-temperature fuel gas, be then passed in combustion gas turbine 15, promote combustion gas turbine 15 to rotate, and drive first Motor 16 rotates and produces electric energy；The tail gas that combustion gas turbine 15 discharges 700 DEG C is passed in waste heat boiler 4, reclaims heat therein, And make the temperature of tail gas be less than 200 DEG C；The vapor (steam) temperature that waste heat boiler 4 produces HTHP is 600 DEG C, and pressure is 1.0MPa, in gasification furnace 2, water-gas shift device 8, fuel humidifier 12 and steam turbine 17；In steam turbine 17, High temperature and high pressure steam promotes steam turbine 17 to rotate, and drives the second generator 18 to rotate generation electric energy；Through steam turbine 17 Condensed water feeds in waste heat boiler 4 again afterwards；Compress and liquefy liquid CO of device 10 generation2It is input to liquid CO2Conveying arrangement 19 In；Liquid CO2Conveying arrangement 19 is by liquid CO2Transport at oil field, coal bed gas field and waste gas oil well；By CO2Displacement oil Device 20 is by CO2It is injected in oil field so that oil recovery improves 10%；By CO2Gas displacing coal-bed device 21 is by CO2Note Enter in coal bed gas field so that coal bed gas recovery ratio improves 10%；By CO2Geological storage device 22 is by CO2It is injected into discarded In oil well, by CO2Permanently sealed up for safekeeping.
Compared to the prior art relatively, the present invention possesses following advantage：
(1) part nitrogen that air separation unit 1 produces has reclaimed the heat of high-temperature synthesis gas through high-temperature heat-exchanging 5, can The comprehensive electric generating efficiency of raising system.
(2) it is passed into after high temperature nitrogen is mixed with hydrogen-rich gas in combustion chamber 13, it is possible to increase hydrogen is in combustion chamber 13 Combustion stability.
(3) liquid CO that system produces2, can be directly used for burying, displacement of reservoir oil purging.
Present invention CO before burning is achieved based on Integrated Gasification Combined Cycle System2Trapping, and take full advantage of In gasification furnace produce high-temperature synthesis gas heat, realize the cascade utilization of system thermal by waste heat boiler, enable to be The CO of system2Capture rate be more than 90%, generating efficiency be more than 40%, substantially increase integrated gasification combined cycle for power generation system Environmental protection characteristic, be simultaneously achieved CO2Seal up for safekeeping and recycling.
Brief description
Fig. 1 is a kind of schematic diagram of the near-zero release coal generating system based on IGCC of the present invention.
Specific embodiment
The present invention will be further described below in conjunction with the accompanying drawings.
Case study on implementation
As shown in figure 1, coal, steam and oxygen are passed through gasification furnace 2 produces synthesis gas, the temperature of synthesis gas is 1000 DEG C, group It is divided into CO ≈ 60%, H2≈ 30%, CO2≈ 7%, remaining group is divided into N2、H2S、COS、CH4In impurity gas.Synthesis gas first passes around High-temperature heat-exchanging 5 heat exchange, temperature is reduced to less than 200 DEG C, then passes to dust arrester 7 so that particulate matter component is less than 50mg/ Nm3；It is passed in water-gas shift device 8 so that CO in synthesis gas again<0.1%, H2>60%；Then it is passed into desulfurization and decarburization dress Put 9 so that H2S and COS concentration is less than 1ppm, the H of capture2S reclaims sulphur therein by sulfur recovery unit 11.Simultaneously in desulfurization CO in removing synthesis gas in decarbonization device 92So that CO2Purity be more than 90%, then pass to compress and liquefy in device 10, Obtain the CO of liquid by compressing and liquefying2, can be used for the displacement of reservoir oil and seal up for safekeeping.H in the hydrogen-rich gas that desulfurization and decarburization device 9 produces2Contain Amount is more than 90%, and hydrogen-rich gas is through fuel humidifier 12 so that H in gas2O molar content>5%, then pass to burning In room 13.The nitrogen that air separation unit 1 produces, through separator 3,70% nitrogen is passed in nitrogen gas recovering apparatus 6, remaining 30% is passed in high-temperature heat-exchanging 5 and is warming up to 500 DEG C, is then passed in combustion chamber 13.Compressor 14 is in combustion gas turbine 15 Drive under rotate, the air of normal pressure is boosted to 5MPa, then passes in combustion chamber 13.In combustion chamber 13, hydrogen rich gas Body is mixed with high temperature nitrogen and then is burnt with pressure-air, produces high-temperature fuel gas, is then passed in combustion gas turbine 15, pushes away Dynamic combustion gas turbine 15 rotates, and drives the first generator 16 to rotate generation electric energy.The tail gas that combustion gas turbine 15 discharges 700 DEG C is passed through To in waste heat boiler 4, reclaim heat therein, and make the temperature of tail gas be less than 200 DEG C.Waste heat boiler 4 produces HTHP Vapor (steam) temperature be 600 DEG C, pressure be 1.0MPa, can be used for gasification furnace 2, water-gas shift device 8, fuel humidifier 12 and steam In steam turbine 17.In steam turbine 17, high temperature and high pressure steam promotes steam turbine 17 to rotate, and drives 18 turns of the second generator Electric energy given birth to by movable property.After steam turbine 17, condensed water feeds in waste heat boiler 4 again.Compress and liquefy the liquid of device 10 generation CO2It is input to liquid CO2In conveying arrangement 19.Liquid CO2Conveying arrangement 19 is by liquid CO2Transport oil field, coal bed gas field and At waste gas oil well.By CO2Displacement petroleum installation 20 is by CO2It is injected in oil field so that oil recovery improves 10%.Pass through CO2Gas displacing coal-bed device 21 is by CO2It is injected in coal bed gas field so that coal bed gas recovery ratio improves 10%.By CO2Geology Mothballed plant 22 is by CO2It is injected in discarded oil well, by CO2Permanently sealed up for safekeeping.

Claims (9)

1. a kind of near-zero release coal generating system based on IGCC it is characterised in that：Including air separation unit (1), air separation unit (1) entrance is passed through air, and the oxygen outlet of air separation unit (1) connects the oxygen intake of gasification furnace (2), the nitrogen of air separation unit (1) Gas outlet connects nitrogen separation device (3)；The coal entrance of gasification furnace (2) adds coal, and the steam inlet of gasification furnace (2) connects waste heat boiler (4) steam (vapor) outlet, the syngas outlet of gasification furnace (2) connects the high-temperature gas entrance of high-temperature heat-exchanging (5)；Nitrogen separation device (3) one outlet connects the cryogenic gas entrance of high-temperature heat-exchanging (5), and another outlet connects nitrogen gas recovering apparatus (6)；High temperature changes The high-temperature gas outlet of hot device (5) connects the entrance of dust arrester (7), and the cryogenic gas outlet of high-temperature heat-exchanging (5) connects combustion chamber (13)；The entrance of outlet water receiving vapour converting means (8) of dust arrester (7)；The steam inlet of water-gas shift device (8) connects waste heat The steam (vapor) outlet of boiler (4), the gas vent of water-gas shift device (8) connects the gas access of desulfurization and decarburization device (9)；Desulfurization takes off The H of carbon device (9)2S outlet meets sulfur recovery unit (11), the CO of desulfurization and decarburization device (9)2Gas vent connects and compresses and liquefies device (10), the hydrogen-rich gas outlet of desulfurization and decarburization device (9) connects burning humidifier (12)；The outlet output of sulfur recovery unit (11) Sulphur；The steam inlet of fuel humidifier (12) connects the steam (vapor) outlet of waste heat boiler (4), and the hydrogen-rich gas of fuel humidifier (12) goes out Mouth connects combustion chamber (13)；The air intake of combustion chamber (13) connects the pressure-air outlet of compressor (14), the combustion of combustion chamber (13) Gas outlet connects the fuel gas inlet of combustion gas turbine (15)；The entrance of compressor (14) is passed through air；The outlet of combustion gas turbine (15) connects The high-temperature gas entrance of waste heat boiler (4), combustion gas turbine (15) is connected with the first generator (16), and the first generator (16) is defeated Go out electric energy；The steam (vapor) outlet of waste heat boiler (4) connects the steam inlet of steam turbine (17), the feed-water intake of waste heat boiler (4) Connect the feedwater outlet of steam turbine (17), in the water inlet of waste heat boiler (4), be passed through water；Steam turbine (17) and the second generating Machine (18) is connected, the second generator (18) output electric energy；Compress and liquefy liquid CO of device (10)2Outlet connects liquid CO2Fortune Defeated device (19) liquid CO2Entrance, compresses and liquefies liquid CO that device (10) produces2It is input to liquid CO2Conveying arrangement (19) In, can be used for the displacement of reservoir oil and geological storage；Liquid CO2The outlet of conveying arrangement (19) connects CO2Displacement petroleum installation (20), CO2Drive For coal seam device of air (21) and CO2Geological storage device (22)；CO2Displacement petroleum installation (20) output oil, CO2Displacement coal Layer device of air (21) output coal bed gas.
2. a kind of near-zero release coal generating system based on IGCC according to claim 1 it is characterised in that：Described remove Dirt device (7) adopts sack cleaner or electric cleaner or ceramic filter, and the particulate matter in removing synthesis gas is so that mine dust contains Amount is less than 100mg/Nm3.
3. a kind of near-zero release coal generating system based on IGCC according to claim 1 it is characterised in that：Described water Vapour converting means (8), using resistant to sulfur water-gas shift technique, by water gas shift reation CO+H2O=H2+CO2By in synthesis gas CO is transformed to H2So that CO ratio is less than 0.5% in exit gas, wherein steam comes from waste heat boiler (4).
4. a kind of near-zero release coal generating system based on IGCC according to claim 1 it is characterised in that：Described de- Sulphur decarbonization device (9) washes method or MDEA method, prepared hydrogen-rich gas, H in hydrogen-rich gas using low-temp methanol2S, COS content is less than 1ppm.
5. a kind of near-zero release coal generating system based on IGCC according to claim 1 it is characterised in that：Described pressure Contracting liquefying plant (10), can be by gaseous CO2It is converted into the CO of liquid2, CO2Concentration be higher than 99%.
6. a kind of near-zero release coal generating system based on IGCC according to claim 1 it is characterised in that：Described combustion Material humidifier (12), using steam method, hydrogen-rich gas is mixed with some vapor produced by waste heat boiler (4), Improve H2Fuel wherein H2The content of O is so that H2The molar content of O>5%.
7. a kind of near-zero release coal generating system based on IGCC according to claim 1 it is characterised in that：Described pressure Mechanism of qi (14), combustion gas turbine (15) and the first generator (16), are installed on same axis, and combustion gas turbine (15) is high in high pressure Rotational band dynamic pressure mechanism of qi under the impact of warm combustion gas (14 and first generator (16) rotate, compressor (14) makes the pressure of air More than 4Mpa is increased to by normal pressure, the first generator (16) then produces AC energy.
8. a kind of near-zero release coal generating system based on IGCC according to claim 1 it is characterised in that：Described steaming Steam turbine (17) and the second generator (18), are installed on same axis, the high temperature and high pressure steam impact that waste heat boiler (4) produces Steam turbine (17) rotates, and steam turbine (17) drives the second generator (18) to rotate and produces electric energy.
9. a kind of method of work of the near-zero release coal generating system based on IGCC described in claim 1 it is characterised in that： Coal, steam and oxygen are passed through gasification furnace (2) and produce synthesis gas, and the temperature of synthesis gas is 1000 DEG C, and group is divided into CO ≈ 60%, H2≈ 30%, CO2≈ 7%, remaining group is divided into N2、H2S、COS、CH4Impurity gas；Synthesis gas first passes around high-temperature heat-exchanging (5) heat exchange, Temperature is reduced to less than 200 DEG C, then passes to dust arrester (7) so that particulate matter component is less than 50mg/Nm3；It is passed into water again So that CO in synthesis gas in vapour converting means (8)<0.5%, H2>60%；Then it is passed into desulfurization and decarburization device (9) so that H2S It is less than 1ppm, the H of capture with COS concentration2S reclaims sulphur therein by sulfur recovery unit (11)；Simultaneously in desulfurization and decarburization device (9) CO in removing synthesis gas in2So that CO2Purity be more than 90%, then pass to compress and liquefy in device (10), pass through Compression and the CO of liquefaction acquisition liquid2, can be used for the displacement of reservoir oil and seal up for safekeeping；H in the hydrogen-rich gas that desulfurization and decarburization device (9) produces2Content More than 90%, hydrogen-rich gas is through fuel humidifier (12) so that H in gas2O molar content>5%, then pass to burning In room (13)；The nitrogen that air separation unit (1) produces, through nitrogen separation device (3), 70% nitrogen is passed into nitrogen recycling dress Put in (6), remaining 30% is passed in high-temperature heat-exchanging (5) and is warming up to 500 DEG C, is then passed in combustion chamber (13)；Calm the anger Machine (14) rotates under the drive of combustion gas turbine (15), and the air of normal pressure is boosted to 5MPa, then passes to combustion chamber (13) In；In combustion chamber (13), hydrogen-rich gas is mixed with high temperature nitrogen and then is burnt with pressure-air, produces high-temperature fuel gas, Then it is passed in combustion gas turbine (15), promotes combustion gas turbine (15) to rotate, and drive the first generator (16) to rotate and produce electricity Energy；The tail gas that combustion gas turbine (15) discharges 700 DEG C is passed in waste heat boiler (4), reclaims heat therein, and makes tail gas Temperature is less than 200 DEG C；The vapor (steam) temperature that waste heat boiler (4) produces HTHP is 600 DEG C, and pressure is 1.0MPa, for gasifying In stove (2), water-gas shift device (8), fuel humidifier (12) and steam turbine (17)；In steam turbine (17), high temperature High steam promotes steam turbine (17) to rotate, and drives the second generator (18) to rotate generation electric energy；Through steam turbine (17) condensed water feeds in waste heat boiler (4) again afterwards；Compress and liquefy liquid CO that device (10) produces2It is input to liquid CO2Transport In device (19)；Liquid CO2Conveying arrangement (19) is by liquid CO2Transport at oil field, coal bed gas field and waste gas oil well；Pass through CO2Displacement petroleum installation (20) is by CO2It is injected in oil field so that oil recovery improves 10%；By CO2Gas displacing coal-bed Device (21) is by CO2It is injected in coal bed gas field so that coal bed gas recovery ratio improves 10%；By CO2Geological storage device (22) By CO2It is injected in discarded oil well, by CO2Permanently sealed up for safekeeping.
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CN109489071A (en) * 2018-11-28 2019-03-19 中国华能集团有限公司 A kind of low NOxCombustion chamber, gas turbine engine systems, the starting method of gas turbine engine systems and the load adjusting method of discharge
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CN109611171A (en) * 2019-01-15 2019-04-12 中国石油大学(华东) Integral coal gasification-supercritical CO of zero carbon emission2Combined cycle generating process
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CN111237058A (en) * 2020-02-27 2020-06-05 中国华能集团清洁能源技术研究院有限公司 IGCC power generation system and method for humidifying fuel gas by using low-temperature waste heat of flue gas
CN111810259A (en) * 2020-05-26 2020-10-23 新奥科技发展有限公司 Method and system for utilizing carbon dioxide
CN113322103A (en) * 2021-05-28 2021-08-31 安庆市长虹化工有限公司 Reducing CO at the air separation inlet of a coal gasification plant2Concentration device
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