CN114413245B - IGCC power plant heat accumulation, oxygen storage, energy storage and heat supply peak regulation system - Google Patents

IGCC power plant heat accumulation, oxygen storage, energy storage and heat supply peak regulation system Download PDF

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Publication number
CN114413245B
CN114413245B CN202111523061.2A CN202111523061A CN114413245B CN 114413245 B CN114413245 B CN 114413245B CN 202111523061 A CN202111523061 A CN 202111523061A CN 114413245 B CN114413245 B CN 114413245B
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heat
storage tank
outlet
heat exchanger
heat storage
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CN114413245A (en
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郑建涛
许世森
徐越
任永强
刘刚
李晓宇
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Huaneng Clean Energy Research Institute
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Huaneng Clean Energy Research Institute
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
    • F22B33/18—Combinations of steam boilers with other apparatus
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04527—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general
    • F25J3/04539—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the H2/CO synthesis by partial oxidation or oxygen consuming reforming processes of fuels
    • F25J3/04545—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the H2/CO synthesis by partial oxidation or oxygen consuming reforming processes of fuels for the gasification of solid or heavy liquid fuels, e.g. integrated gasification combined cycle [IGCC]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
    • F01D15/10—Adaptations for driving, or combinations with, electric generators
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/50—Feed-water heaters, i.e. economisers or like preheaters incorporating thermal de-aeration of feed-water
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
    • F25J3/04048—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams
    • F25J3/04054—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of cold gaseous streams, e.g. intermediate or oxygen enriched (waste) streams of air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04406—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system
    • F25J3/04412—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04472—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using the cold from cryogenic liquids produced within the air fractionation unit and stored in internal or intermediate storages
    • F25J3/04496—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using the cold from cryogenic liquids produced within the air fractionation unit and stored in internal or intermediate storages for compensating variable air feed or variable product demand by alternating between periods of liquid storage and liquid assist
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
    • F25J3/04563—Integration with a nitrogen consuming unit, e.g. for purging, inerting, cooling or heating
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
    • F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
    • F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
    • F25J3/04763—Start-up or control of the process; Details of the apparatus used
    • F25J3/04769—Operation, control and regulation of the process; Instrumentation within the process
    • F25J3/04812—Different modes, i.e. "runs" of operation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/42—Nitrogen or special cases, e.g. multiple or low purity N2
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J2215/00—Processes characterised by the type or other details of the product stream
    • F25J2215/50—Oxygen or special cases, e.g. isotope-mixtures or low purity O2
    • 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]
    • 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
    • Y02E60/14—Thermal energy storage

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

The invention provides a heat storage, oxygen storage, energy storage and heat supply peak regulation system of an IGCC power plant, which comprises a low-temperature heat storage tank, a high-temperature heat storage tank, a heat storage tank heat exchanger and a heat source, wherein the low-temperature heat storage tank and the high-temperature heat storage tank are connected through a circulating pipeline to form a loop, a heat storage medium is transmitted in the circulating pipeline, the heat source is connected between an outlet of the low-temperature heat storage tank and an inlet of the high-temperature heat storage tank, a shell side of the heat storage tank heat exchanger is connected between an outlet of the high-temperature heat storage tank and an inlet of the low-temperature heat storage tank, and a pipe side outlet of the heat storage tank heat exchanger is connected with a steam turbine generator set and a heat user. According to the invention, the heat storage medium is heated by utilizing the heat of the synthesis gas of the gasification furnace and the heat of the exhaust gas of the gas turbine to store heat, and the large-scale oxygen storage tank is utilized to store oxygen, so that the energy cascade utilization of the IGCC power plant is realized, the peak regulation is performed deeply, the load is changed rapidly, the flexibility of load lifting is improved, the load regulation requirement of a unit is met, the heat storage system is utilized to supply heat, and the flexibility, the safety and the economical efficiency of the unit are improved.

Description

IGCC power plant heat accumulation, oxygen storage, energy storage and heat supply peak regulation system
Technical Field
The invention relates to the technical field of power generation of thermal power plants, in particular to a heat storage, oxygen storage, energy storage and heat supply peak regulation system of an IGCC power plant.
Background
With the continuous development of economy and society, the demand of energy is increased, the pollution of fossil energy is serious, clean and renewable energy is imperative, and the country encourages clean energy to generate electricity and supply heat. IGCC power generation combines coal gasification, coal purification technology and efficient gas-steam combined cycle power generation technology, realizes efficient and clean utilization of coal resources, has the advantages of high efficiency, cleanliness, water conservation, wide fuel adaptability, easiness in realization of poly-generation and the like, is combined with sustainable development of carbon dioxide capture, hydrogen energy and the like before future combustion, and is one of important development directions of clean coal power generation technology.
IGCC power plants have many advantages, but also suffer from low operational flexibility and poor variable load performance. The operating load range of the gasification furnace is 50% -100%, which results in narrow load variation range of the IGCC power station; meanwhile, the space division load rate of the IGCC power plant is low, so that the general load rate of the IGCC power plant is about 3%/min (8%/min of a conventional coal-fired power plant); the IGCC has longer starting time, the hot start needs 1.5 hours to 2 days, and the cold start needs 2 days to 3 days approximately; in addition, the efficiency of the IGCC partial load is reduced more.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems in the related art to some extent.
The invention aims to provide a peak regulation system for multi-heat source heat accumulation, large-scale oxygen accumulation and energy accumulation heat supply of an IGCC power plant, which utilizes the sensible heat of the synthesis gas of a gasification furnace to heat a heat accumulation medium and the like for heat accumulation, can absorb the heat of the synthesis gas of the gasification furnace to a great extent, reduces the steam quantity entering a steam turbine and reduces the electric load. The heat storage medium is stored in the high-temperature heat storage tank after being heated, can heat the water supply of the deaerator to generate superheated steam, and is sent into the high-pressure cylinder of the steam turbine to generate electricity or provide heat and steam for heat users.
Meanwhile, oxygen and nitrogen generated by the air separation device are stored by utilizing the large-scale oxygen storage tank and the nitrogen storage tank, oxygen and nitrogen can be rapidly supplied when the gasification furnace needs oxygen and nitrogen, and when the gasification furnace needs load reduction and oxygen quantity reduction, the air separation stores redundant oxygen into the oxygen storage tank, so that the requirement of lifting load of the gasification furnace is met, and the peak regulation capacity of the IGCC power plant is improved.
The embodiment of the application provides an IGCC power plant heat accumulation oxygen storage energy storage heat supply peak regulation system, including low temperature heat storage jar, high temperature heat storage jar, heat storage jar heat exchanger and heat source, form the return circuit through circulating line connection between low temperature heat storage jar and the high temperature heat storage jar, transmit the heat storage medium in circulating line, connect the heat source between the export of low temperature heat storage jar and the entry of high temperature heat storage jar, connect the shell side of heat storage jar heat exchanger between the export of high temperature heat storage jar and the entry of low temperature heat storage jar, the entry and the heat user of steam turbine generator unit are connected in proper order to the pipe side exit linkage steam turbine generator unit's of heat storage jar heat exchanger, the condensate pump is connected in proper order to the export of steam turbine generator unit, the exhaust-heat boiler heat exchanger, the deoxidizer, deoxidizer feed pump, final pipe side entrance to the heat storage jar heat exchanger.
In some embodiments, the heat source comprises any one or a combination of a syngas heat exchanger, a gas-fired flue gas heat exchanger, a pipeline electric heater, and a waste heat boiler flue gas heat exchanger.
In some embodiments, the gasification furnace further comprises a synthesis gas heat exchanger, an air compressor, an air separation tower, a plurality of air separation heat exchangers, a nitrogen storage tank and an oxygen storage tank, wherein a shell side inlet of the synthesis gas heat exchanger is connected with an outlet of the gasification furnace, an inlet side of each air separation heat exchanger is respectively connected with an air compressor outlet, a nitrogen outlet of the air separation tower and an oxygen outlet of the air separation tower, an outlet side of each air separation heat exchanger is respectively connected with an inlet of the air separation tower, an inlet of the nitrogen storage tank and an inlet of the oxygen storage tank, and an outlet of the nitrogen storage tank and an outlet of the oxygen storage tank are respectively connected with an inlet of the gasification furnace.
The shell side outlet of the synthesis gas heat exchanger is connected with the flue inlet of the waste heat boiler, the tube side inlet of the synthesis gas heat exchanger is connected with the outlet of the low-temperature heat storage tank, and the tube side outlet of the synthesis gas heat exchanger is connected with the inlet of the high-temperature heat storage tank.
In some embodiments, the system further comprises a gas-to-gas heat exchanger and a gas turbine generator set, wherein the pipe side inlet of the gas-to-gas heat exchanger is connected with the outlet of the low-temperature heat storage tank, the pipe side outlet of the gas-to-gas heat exchanger is connected with the inlet of the high-temperature heat storage tank, the shell side outlet of the synthesis gas heat exchanger is connected with the inlet of the gas turbine generator set, the outlet of the gas turbine generator set is connected with the shell side inlet of the gas-to-gas heat exchanger, and the shell side outlet of the gas-to-gas heat exchanger is connected with the flue inlet of the waste heat boiler.
In some embodiments, a syngas purifier is coupled between the syngas heat exchanger and the gas turbine generator set.
In some embodiments, the system further comprises a pipeline electric heater, wherein a heating resistor is arranged in the pipeline electric heater, two ends of the heating resistor are respectively connected with a bus of the gas turbine generator and a bus of the steam turbine generator, a shell side inlet of the pipeline electric heater is connected with an outlet of the low-temperature heat storage tank, and a shell side outlet of the pipeline electric heater is connected with an inlet of the high-temperature heat storage tank.
In some embodiments, the system further comprises a waste heat boiler flue gas heat exchanger, wherein a pipe side inlet of the waste heat boiler flue gas heat exchanger is connected with an outlet of the low-temperature heat storage tank, a pipe side outlet of the waste heat boiler flue gas heat exchanger is connected with an inlet of the high-temperature heat storage tank, and a shell side inlet of the waste heat boiler flue gas heat exchanger is connected with a flue outlet of the waste heat boiler.
In some embodiments, the outlet of the deaerator feed water pump is further connected to an inlet side of a waste heat boiler heat exchanger, the outlet of the waste heat boiler heat exchanger is connected to an inlet of a steam turbine of the steam turbine generator set, and the waste heat boiler heat exchanger is further connected to a steam drum.
In some embodiments, a coal bucket is connected between the nitrogen storage tank and the gasifier.
In some embodiments, a liquid nitrogen pump is connected between the nitrogen outlet of the air separation column and the multi-stream air separation heat exchanger, and a liquid oxygen pump is connected between the oxygen outlet of the air separation column and the multi-stream air separation heat exchanger.
The beneficial effects of the invention are as follows: the invention can utilize the heat of the synthesis gas of the gasification furnace, the heat of the exhaust gas of the gas turbine and the electric heating heat to heat the heat storage medium to the greatest extent and store the heat storage medium in the high-temperature heat storage tank, thereby reducing the steam quantity entering the steam turbine and reducing the load of the steam turbine. The stored heat is used for heating the water supply to generate steam which enters the steam turbine to generate electricity and also can be used for supplying heat and steam. The flow and the speed of oxygen and nitrogen entering the gasification furnace can be flexibly controlled by utilizing the oxygen storage tank and the nitrogen storage tank. The variable load performance of the air separation tower and the gasification furnace is greatly enhanced, the load change speed and the change range of the IGCC are improved, and the IGCC power plant really has the power grid peak regulation and frequency modulation capability.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and may be better understood from the following description of embodiments with reference to the accompanying drawings,
wherein:
FIG. 1 is a schematic diagram of a heat storage, oxygen storage, energy storage and heat supply peak shaving system of an IGCC power plant in an embodiment of the invention;
reference numerals:
1-a gasification furnace; 2-a coal bucket; 3-syngas heat exchanger; 4-a syngas purifier; 5-gas turbine; 6-a steam turbine generator set; 7-a condenser; 8-a condensate pump; 9-a waste heat boiler; 10-deaerator; 11-deaerator feed pump; 12-steam drum; 13-an air compressor; 14-an air separation tower; 15-a liquid oxygen pump; 16-liquid nitrogen pump; 17-nitrogen storage tank; 18-an oxygen storage tank; 19-a low-temperature heat storage tank; 20-a high-temperature heat storage tank; 21-a cryogenic medium transfer pump; 22-a high temperature medium delivery pump; 23-a heat storage tank heat exchanger; 24-multi-stream space division heat exchanger; 25-a steam turbine; 26-a gas turbine combustor; 27-a waste heat boiler heat exchanger; 28-a gas-to-flue gas heat exchanger; 29-a pipeline electric heater; 30-a gas turbine generator; 31-a steam turbine generator; 32-hot user; 33-exhaust heat boiler flue gas heat exchanger.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The following describes an IGCC power plant heat storage, oxygen storage, energy storage and heat supply peak shaving system according to an embodiment of the invention with reference to the accompanying drawings.
As shown in fig. 1, an embodiment of the application proposes an IGCC power plant heat storage, oxygen storage, energy storage and heat supply peak regulation system, which comprises a gasification furnace 1, a coal bucket 2, a synthesis gas heat exchanger 3, a synthesis gas purifier 4, a gas turbine generator set, a steam turbine generator set 6, a condensate pump 8, a deaerator 10, a deaerator feed pump 11, a steam drum 12, an air compressor 13, an air separation tower 14, a liquid oxygen pump 15, a liquid nitrogen pump 16, a nitrogen storage tank 17, an oxygen storage tank 18, a low-temperature heat storage tank 19, a high-temperature heat storage tank 20, a low-temperature medium delivery pump 21, a high-temperature medium delivery pump 22, a heat storage tank heat exchanger 23, a multi-stream air separation heat exchanger 24, a waste heat boiler heat exchanger 27, a gas flue gas heat exchanger 28, a pipeline electric heater 29 and a waste heat boiler flue gas heat exchanger 33.
The low-temperature heat storage tank 19 and the high-temperature heat storage tank 20 are connected through a circulation pipeline to form a loop, a heat storage medium is transmitted in the circulation pipeline, and a plurality of heat exchangers are connected in the circulation pipeline, wherein the heat-absorbing heat exchanger comprises a synthesis gas heat exchanger 3, a gas flue gas heat exchanger 28, a pipeline electric heater 29 and a waste heat boiler flue gas heat exchanger 33, and the heat-releasing heat exchanger is the heat storage tank heat exchanger 23. The heat-absorbing heat exchanger is used for heating the low-temperature heat storage medium into the high-temperature heat storage medium through heat exchange and storing the high-temperature heat storage medium into the high-temperature heat storage tank 20 for standby. The heat-releasing heat exchanger is used for conveying high-temperature heat storage medium into the heat storage tank heat exchanger 23, heating water coming out of the waste heat boiler heat exchanger 27, heating the water to form high-temperature steam, conveying the high-temperature steam to the steam turbine 25 for generating electricity, and conveying the high-temperature steam to the heat consumer 32 for supplying heat and steam.
The circuit between each heat exchanger and the low temperature heat storage tank 19 and the high temperature heat storage tank 20 is described below. As shown in fig. 1, the arrow direction is the flow direction of the medium such as heat storage medium, steam, air, water or flue gas.
(1) A synthesis gas heat exchanger 3. An outlet of the low-temperature heat storage tank 19 is connected with an inlet of the low-temperature medium delivery pump 21, an outlet of the low-temperature medium delivery pump 21 is connected with a pipe side inlet of the synthesis gas heat exchanger 3, and a pipe side outlet of the synthesis gas heat exchanger 3 is connected with an inlet of the high-temperature heat storage tank 20. The shell side inlet of the synthesis gas heat exchanger 3 is connected with the outlet of the gasification furnace 1, the inlet side of the multi-flow air separation heat exchanger 24 is respectively connected with the outlet of the air compressor 13, the nitrogen outlet and the oxygen outlet of the air separation tower 14, the outlet side of the multi-flow air separation heat exchanger 24 is respectively connected with the inlet of the air separation tower 14, the inlet of the nitrogen storage tank 17 and the inlet of the oxygen storage tank 18, and the outlet of the nitrogen storage tank 17 and the outlet of the oxygen storage tank 18 are both connected with the inlet of the gasification furnace 1; the shell side outlet of the synthesis gas heat exchanger 3 is sequentially connected with the flue inlets of the synthesis gas purifier 4, the gas turbine generator set, the gas flue gas heat exchanger 28 and the waste heat boiler 9.
The gasification furnace 1 conveys high temperature gas into the synthesis gas heat exchanger 3, the heat storage medium in the low temperature heat storage tank 19 is conveyed to the pipe side of the synthesis gas heat exchanger 3 through the low temperature medium conveying pump 21, the high temperature gas heats the heat storage medium, and then the heat storage medium is conveyed back to the high temperature heat storage tank 20.
The air compressor 13 conveys air to the multi-flow air separation heat exchanger 24 for cooling, then enters the air separation tower 14, the air separation tower 14 conveys separated liquid oxygen to the multi-flow air separation heat exchanger 24 for gasification through the liquid oxygen pump 15, the gasified oxygen is conveyed to the oxygen storage tank 18 for storage, and when the oxygen is needed to be used, the oxygen storage tank 18 conveys the oxygen to the gasification furnace 1.
The separated liquid nitrogen is conveyed to a multi-flow air separation heat exchanger 24 through a liquid nitrogen pump 16 for gasification, gasified nitrogen is conveyed to a nitrogen storage tank 17 for storage, a coal bucket 2 is connected between the nitrogen storage tank 17 and the gasification furnace 1, coal dust serving as fuel of the gasification furnace is stored in the coal bucket 2, the nitrogen storage tank 17 is used for introducing nitrogen into the coal bucket 2, the coal dust in the coal bucket 2 is conveyed to a coal dust bin of the gasification furnace 1 through gas, and then the nitrogen enters the gasification furnace 1.
(2) A gas-to-flue gas heat exchanger 28. The gas turbine generator set comprises a gas turbine 5, a gas turbine combustion chamber 26 and a gas turbine generator 30 connected to each other. The shell side outlet of the synthesis gas heat exchanger 3 is connected with the inlet of the synthesis gas purifier 4, the outlet of the synthesis gas purifier 4 is connected with the gas turbine combustion chamber 26, the gas turbine 5 is connected with the shell side inlet of the gas flue gas heat exchanger 28, and the shell side outlet of the gas flue gas heat exchanger 28 is connected with the flue inlet of the waste heat boiler 9. The pipe side inlet of the gas-gas heat exchanger 28 is connected with the outlet of the low-temperature medium delivery pump 21, the inlet of the low-temperature medium delivery pump 21 is connected with the outlet of the low-temperature heat storage tank 19, and the pipe side outlet of the gas-gas heat exchanger 28 is connected with the inlet of the high-temperature heat storage tank 20.
The high-temperature gas in the synthetic gas heat exchanger 3 is subjected to heat exchange and then is conveyed to the synthetic gas purifier 4 for filtering and purifying, and then the gas is conveyed to the combustion chamber 26 of the gas turbine as fuel to power the gas turbine 5. The gas turbine 5 supplies high-temperature gas and flue gas to the gas-flue gas heat exchanger 28, heats the low-temperature heat storage medium supplied from the low-temperature heat storage tank 19, and supplies the heated high-temperature heat storage medium to the high-temperature heat storage tank 20.
(3) A pipeline electric heater 29. The pipe electric heater 29 is provided with a heating resistor for supplying heat, and both ends of the heating resistor are connected to a bus of the gas turbine generator 30 and a bus of the steam turbine generator 31, respectively, so that the heating resistor generates heat. The shell side inlet of the pipeline electric heater 29 is connected with the outlet of the low-temperature medium delivery pump 21, the inlet of the low-temperature medium delivery pump 21 is connected with the outlet of the low-temperature heat storage tank 19, and the shell side outlet of the pipeline electric heater 29 is connected with the inlet of the high-temperature heat storage tank 20.
The low-temperature medium transfer pump 21 transfers the low-temperature heat storage medium of the low-temperature heat storage tank 19 into the pipe electric heater 29, and the low-temperature heat storage medium is heated into a high-temperature heat storage medium by heat exchange of the heating resistor and transferred into the high-temperature heat storage tank 20.
(4) The exhaust heat boiler flue gas heat exchanger 33. The pipe side inlet of the exhaust-heat boiler flue gas heat exchanger 33 is connected with the outlet of the low-temperature medium delivery pump 21, the inlet of the low-temperature medium delivery pump 21 is connected with the outlet of the low-temperature heat storage tank 19, the pipe side outlet of the exhaust-heat boiler flue gas heat exchanger 33 is connected with the inlet of the high-temperature heat storage tank 20, and the shell side inlet of the exhaust-heat boiler flue gas heat exchanger 33 is connected with the flue outlet of the exhaust-heat boiler 9.
The high-temperature flue gas of the waste heat boiler 9 enters the waste heat boiler flue gas heat exchanger 33 to heat the low-temperature heat storage medium conveyed from the low-temperature heat storage tank 19, and the heated high-temperature heat storage medium is conveyed to the high-temperature heat storage tank 20.
The waste heat boiler 9 is connected with the waste heat boiler heat exchanger 27, the waste heat boiler heat exchanger 27 is connected with the inlet of the deaerator 10 and the steam drum 12, the outlet of the deaerator 10 is connected with the inlet of the deaerator feed water pump 11, the outlet of the deaerator feed water pump 11 is connected with the inlet of the waste heat boiler heat exchanger 27, and the outlet of the waste heat boiler heat exchanger 27 is connected with the heat user 32 and the steam turbine generator unit 6.
The steam turbine generator set 6 comprises a steam turbine generator 31, a steam turbine 25 and a condenser 7 which are sequentially connected, wherein an outlet of the waste heat boiler heat exchanger 27 is connected with a high-pressure cylinder of the steam turbine 25 to provide power for the steam turbine 25, the condenser 7 condenses exhaust steam of the steam turbine 25 into water, an outlet of the condenser 7 is connected with an inlet of the condensate pump 8, and an outlet of the condensate pump 8 is connected with the waste heat boiler heat exchanger 27 to exchange heat with the condensed water for recycling. After entering the waste heat boiler heat exchanger 27 for preliminary heating for the first time, the condensate water enters the deaerator 10 for deaeration, is conveyed back into the waste heat boiler heat exchanger 27 for continuous heating through the deaerator feed pump 11, and finally forms steam through the steam drum 12 and the waste heat boiler heat exchanger 27 in a circulating and reciprocating mode, and is conveyed to the heat user 32 and the steam turbine 25.
(5) A heat storage tank heat exchanger 23. An outlet of the high-temperature heat storage tank 20 is connected with an inlet of the high-temperature medium delivery pump 22, an outlet of the high-temperature medium delivery pump 22 is connected with a shell-side inlet of the heat storage tank heat exchanger 23, and a shell-side outlet of the heat storage tank heat exchanger 23 is connected with an inlet of the low-temperature heat storage tank 19. The pipe side outlet of the heat storage tank heat exchanger 23 is connected with a steam turbine 25 and a heat user 32, and the outlet of a condenser 7 of the steam turbine generator set 6 is sequentially connected with a condensate pump 8, a waste heat boiler heat exchanger 27, a deaerator 10, a deaerator water supply pump 11 and finally connected to the pipe side inlet of the heat storage tank heat exchanger 23.
The high-temperature medium transfer pump 22 transfers the high-temperature heat storage medium in the high-temperature heat storage tank 20 to the heat storage tank heat exchanger 23, heats the transferred condensed water to form steam, and then transfers the steam to the steam turbine 25 and the heat consumer 32. The high-temperature heat storage medium becomes a low-temperature heat storage medium after heat exchange, and is conveyed to the low-temperature heat storage tank 19.
The synthesis gas heat exchanger 3 is arranged in the synthesis gas channel of the gasification furnace to heat the heat storage medium, thereby realizing heat storage. The heat exchanger gas flow mode can be a concurrent flow mode, a counter flow mode, a cross flow mode and the like.
The system can partially or completely utilize heat storage to enable the power generation and the heat supply of the IGCC power plant, and the two aspects can also be flexibly matched for operation. IGCC plant heating is not limited to extraction from the main steam line, but may be from a heat storage tank, any steam extraction port of a turbine, or other suitable location of the system.
The system utilizes the synthetic gas led out from the gasification furnace 1 to heat the medium conveyed from the low-temperature heat storage tank 19 through the synthetic gas heat exchanger 3, the heat storage medium is heated and returned to the high-temperature heat storage tank 20 for storage and heat storage, so that the steam quantity entering the steam turbine 25 is reduced, the power generation of the IGCC power plant is reduced, and the medium conveyed by the low-temperature medium conveying pump 21 can be heated in the gas-flue gas heat exchanger 28 by utilizing the flue gas heat of the outlet of the gas turbine 5. When heat is released, the feed water from the deaerator feed water pump 11 enters the pipe side inlet of the heat storage tank heat exchanger 23 or the waste heat boiler heat exchanger 27, and the absorbed heat is heated to be steam, and enters the steam turbine 25 to generate electricity, so that the power generation capacity of the IGCC power plant is improved, and the peak shaving capacity is increased. In order to improve the load-changing capacity of the IGCC power plant, a large-scale oxygen storage tank 18 and a nitrogen storage tank 17 are added, and when the IGCC power plant needs to quickly reduce the load, oxygen and nitrogen produced by the air separation tower 14 are respectively stored in the oxygen storage tank 18 and the nitrogen storage tank 17, so that the amount of oxygen entering the gasification furnace 1 is quickly reduced, and the load is quickly reduced. When the IGCC power plant needs to rapidly increase the load, the oxygen of the oxygen storage tank 18 is released, so that the oxygen amount entering the gasification furnace 1 is increased, and the effect of rapidly increasing the loads of the gasification furnace 1 and the IGCC is achieved. The entire IGCC power plant heat storage system may provide heat and industrial steam to the heat consumer 32. Meanwhile, the gas turbine generator 30 and the steam turbine generator 31 are used for surfing the bus to heat the heat storage medium of the low-temperature heat storage tank 19, and then the heat storage medium is conveyed to the high-temperature heat storage tank 20 for storage, so that the IGCC surfing electric load can be increased or decreased, and meanwhile, the functions of replacing a start boiler, black start and an emergency power supply are achieved. Meanwhile, the heat storage system is utilized for supplying heat, so that the energy cascade utilization of the IGCC power plant is realized, the peak regulation is deep, and the load is changed rapidly. The flexibility, the safety and the economy of the unit are improved.
In some specific embodiments, any one or more of the synthesis gas heat exchanger 3, the gas flue gas heat exchanger 28, the pipeline electric heater 29 and the exhaust-heat boiler flue gas heat exchanger 33 can be selected, and the synthesis gas heat exchanger, the gas flue gas heat exchanger and the exhaust-heat boiler flue gas heat exchanger can be used singly, simultaneously or in a combined mode flexibly.
In some specific embodiments, the heat storage medium may be molten salt, heat conducting oil, or heat conducting particles, or other materials that can store heat. May be a fluid, solid particles, or the like. The heat storage mode can utilize sensible heat, phase change latent heat, two-phase comprehensive heat and the like.
In some specific embodiments, the nitrogen and oxygen reservoirs 17, 18 may be spherical, cylindrical, or other shapes. The installation form is horizontal or vertical. The stored oxygen and nitrogen may be liquid or gaseous.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims (5)

1. The heat storage, oxygen storage, energy storage and heat supply peak regulation system of the IGCC power plant is characterized by comprising a low-temperature heat storage tank, a high-temperature heat storage tank, a heat storage tank heat exchanger and a heat source, wherein the low-temperature heat storage tank and the high-temperature heat storage tank are connected through a circulation pipeline to form a loop, a heat storage medium is transmitted in the circulation pipeline, the heat source is connected between an outlet of the low-temperature heat storage tank and an inlet of the high-temperature heat storage tank, a shell side of the heat storage tank heat exchanger is connected between an outlet of the high-temperature heat storage tank and an inlet of the low-temperature heat storage tank, a pipe side outlet of the heat storage tank heat exchanger is connected with an inlet of a steam turbine generator unit and a heat user, and an outlet of the steam turbine generator unit is sequentially connected with a condensate pump, a waste heat boiler heat exchanger, a deaerator water supply pump and a pipe side inlet which is finally connected to the heat storage tank heat exchanger;
the heat source comprises a synthesis gas heat exchanger, a gas flue gas heat exchanger, a pipeline electric heater and a waste heat boiler flue gas heat exchanger;
the shell side inlet of the synthesis gas heat exchanger is connected with the outlet of the gasification furnace, the shell side outlet of the synthesis gas heat exchanger is connected with the flue inlet of the waste heat boiler, the tube side inlet of the synthesis gas heat exchanger is connected with the outlet of the low-temperature heat storage tank, and the tube side outlet of the synthesis gas heat exchanger is connected with the inlet of the high-temperature heat storage tank;
the system comprises a low-temperature heat storage tank, a high-temperature heat storage tank, a synthesis gas heat exchanger, a gas turbine generator set, a flue gas waste heat boiler, a waste heat boiler and a waste heat boiler, wherein the low-temperature heat storage tank is connected with the low-temperature heat storage tank through a pipe side inlet of the gas flue gas heat exchanger;
a heating resistor is arranged in the pipeline electric heater, two ends of the heating resistor are respectively connected with a bus of the gas turbine generator and a bus of the steam turbine generator, a shell side inlet of the pipeline electric heater is connected with an outlet of the low-temperature heat storage tank, and a shell side outlet of the pipeline electric heater is connected with an inlet of the high-temperature heat storage tank;
the pipe side inlet of the exhaust-heat boiler flue gas heat exchanger is connected with the outlet of the low-temperature heat storage tank, the pipe side outlet of the exhaust-heat boiler flue gas heat exchanger is connected with the inlet of the high-temperature heat storage tank, and the shell side inlet of the exhaust-heat boiler flue gas heat exchanger is connected with the flue outlet of the exhaust-heat boiler;
the outlet of the deaerator water supply pump is also connected with the inlet side of the waste heat boiler heat exchanger, the outlet of the waste heat boiler heat exchanger is connected with the inlet of the steam turbine generator set, and the waste heat boiler heat exchanger is also connected with the steam drum.
2. The IGCC power plant heat storage, oxygen storage, energy storage and heat supply peak regulation system of claim 1, further comprising an air compressor, an air separation tower, a plurality of air separation heat exchangers, a nitrogen storage tank and an oxygen storage tank, wherein the inlet sides of the air separation heat exchangers are respectively connected with an air compressor outlet, a nitrogen outlet of the air separation tower and an oxygen outlet of the air separation tower, the outlet sides of the air separation heat exchangers are respectively connected with an inlet of the air separation tower, an inlet of the nitrogen storage tank and an inlet of the oxygen storage tank, and the outlet of the nitrogen storage tank and the outlet of the oxygen storage tank are respectively connected with an inlet of the gasification furnace.
3. An IGCC power plant heat storage, oxygen storage, energy storage and heat supply peak shaving system as set forth in claim 1, wherein a syngas purifier is connected between the syngas heat exchanger and the gas turbine generator set.
4. The IGCC power plant heat storage, oxygen storage, energy storage and heat supply peak shaving system of claim 2, wherein a coal bucket is connected between the nitrogen storage tank and the gasification furnace.
5. The IGCC power plant heat storage, oxygen storage, energy storage and heat supply peak regulation system of claim 2, wherein a liquid nitrogen pump is connected between the nitrogen outlet of the air separation tower and the multi-flow air separation heat exchanger, and a liquid oxygen pump is connected between the oxygen outlet of the air separation tower and the multi-flow air separation heat exchanger.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106246252A (en) * 2016-09-13 2016-12-21 中国华能集团公司 A kind of peak load stations integrating IGCC and supercritical unit and peak regulating method
CN106285944A (en) * 2016-09-13 2017-01-04 中国华能集团公司 A kind of IGCC peak-load regulation device and method utilizing space division system energy storage
WO2020181675A1 (en) * 2019-03-11 2020-09-17 西安交通大学 Flexible coal-fired power generation system, and operation method therefor
CN112984598A (en) * 2021-03-16 2021-06-18 中国华能集团清洁能源技术研究院有限公司 Power plant boiler heat storage and carbon dioxide power generation integrated deep peak regulation system and method
CN113503531A (en) * 2021-08-02 2021-10-15 中国华能集团清洁能源技术研究院有限公司 Multi-power-supply heat storage peak regulation power station for coal-fired power plant transformation and peak regulation method
CN113586257A (en) * 2021-08-31 2021-11-02 中国华能集团清洁能源技术研究院有限公司 IGCC system adapting to rapid peak regulation and pressure regulation method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106246252A (en) * 2016-09-13 2016-12-21 中国华能集团公司 A kind of peak load stations integrating IGCC and supercritical unit and peak regulating method
CN106285944A (en) * 2016-09-13 2017-01-04 中国华能集团公司 A kind of IGCC peak-load regulation device and method utilizing space division system energy storage
WO2020181675A1 (en) * 2019-03-11 2020-09-17 西安交通大学 Flexible coal-fired power generation system, and operation method therefor
CN112984598A (en) * 2021-03-16 2021-06-18 中国华能集团清洁能源技术研究院有限公司 Power plant boiler heat storage and carbon dioxide power generation integrated deep peak regulation system and method
CN113503531A (en) * 2021-08-02 2021-10-15 中国华能集团清洁能源技术研究院有限公司 Multi-power-supply heat storage peak regulation power station for coal-fired power plant transformation and peak regulation method
CN113586257A (en) * 2021-08-31 2021-11-02 中国华能集团清洁能源技术研究院有限公司 IGCC system adapting to rapid peak regulation and pressure regulation method

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