CN111663975A - Supercritical carbon dioxide power generation system and method based on methane reforming energy storage - Google Patents
Supercritical carbon dioxide power generation system and method based on methane reforming energy storage Download PDFInfo
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- 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
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- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/32—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air
- C01B3/34—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents
- C01B3/38—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by reaction of gaseous or liquid organic compounds with gasifying agents, e.g. water, carbon dioxide, air by reaction of hydrocarbons with gasifying agents using catalysts
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- 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
- F01D15/08—Adaptations for driving, or combinations with, pumps
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- 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
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- F01D15/10—Adaptations for driving, or combinations with, electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S20/00—Solar heat collectors specially adapted for particular uses or environments
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
- F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
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- C01B2203/0227—Processes for making hydrogen or synthesis gas containing a reforming step containing a catalytic reforming step
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/54—Improvements relating to the production of bulk chemicals using solvents, e.g. supercritical solvents or ionic liquids
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Abstract
The invention discloses a supercritical carbon dioxide power generation system and method based on methane reforming energy storage, which comprises an energy storage subsystem and a power generation subsystem, wherein the energy storage subsystem comprises a heat collection reactor, the heat collection reactor is communicated with a carbon monoxide and hydrogen storage tank, the carbon monoxide and hydrogen storage tank is communicated with an energy storage working medium compressor, the energy storage working medium compressor is communicated with an exothermic reactor, the exothermic reactor is communicated with a methane and carbon dioxide storage tank, and the methane and carbon dioxide storage tank is communicated with the heat collection reactor; the power generation subsystem comprises a turbine, wherein the turbine is communicated with a heat regenerator, the heat regenerator is communicated with a precooler, the precooler is communicated with a compressor, the compressor is communicated with the heat regenerator, the heat regenerator is communicated with an exothermic reactor, and the exothermic reactor is communicated with the turbine. The system can realize organic combination of solar methane reforming energy storage and supercritical carbon dioxide power generation, and can realize stable and continuous utilization of solar energy.
Description
Technical Field
The invention relates to the technical field of solar energy utilization, in particular to a supercritical carbon dioxide power generation system and method based on methane reforming energy storage.
Background
Solar energy has characteristics such as clean, inexhaustible, but has the time maldistribution problem, and solar energy all needs to use technologies such as energy storage when being used for generating electricity.
Thermochemical energy storage is mainly based on a reversible thermochemical reaction, realizes storage and release of energy through the fracture recombination of chemical bond, and in the energy storage reaction, the energy storage material absorbs the heat and decomposes into two kinds of substances and stores alone, and when the energy supply needs, two kinds of substances fully contact and take place the reaction, turn into heat energy and release the chemical energy of storing. The thermochemical energy storage density and efficiency are high, and the device is suitable for high-temperature high-density storage of solar energy heat energy. The volume and the weight energy storage density of the thermochemical energy storage are far higher than those of sensible heat or phase change heat storage, the energy storage carrier can be stored for a long time at normal temperature, high-grade heat energy can be usually obtained through the thermochemical energy storage, and most thermochemical energy storage carriers are safe, non-toxic, low in price and convenient to process. Among them, methane reforming is a common thermochemical energy storage system, and has high energy storage density and rich raw material sources.
The supercritical carbon dioxide has the characteristics of high energy density, high heat transfer efficiency and the like, and is an environment-friendly and clean natural working fluid. The power generation technology using supercritical carbon dioxide as a working medium is also one of the international novel and efficient power generation technologies at present.
In northwest China, solar energy resources are rich and water resources are deficient, so if a new system can be developed, the system can organically combine solar methane reforming thermochemical energy storage with supercritical carbon dioxide power generation, and great change can be brought to solar photo-thermal power generation.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a supercritical carbon dioxide power generation system and method based on methane reforming energy storage, which combines solar methane reforming energy storage with supercritical carbon dioxide power generation and can realize stable and continuous utilization of solar energy.
In order to achieve the purpose, the invention adopts the technical scheme that:
a supercritical carbon dioxide power generation system based on methane reforming energy storage comprises an energy storage subsystem and a power generation subsystem;
the energy storage subsystem comprises a heat collecting reactor 2, wherein an outlet of the heat collecting reactor 2 is communicated with an inlet of a carbon monoxide and hydrogen storage tank 3, an outlet of the carbon monoxide and hydrogen storage tank 3 is communicated with an inlet of an energy storage working medium compressor 4, an outlet of the energy storage working medium compressor 4 is communicated with an inlet of a tube pass of an exothermic reactor 5, an outlet of the tube pass of the exothermic reactor 5 is communicated with an inlet of a methane and carbon dioxide storage tank 6, and an outlet of the methane and carbon dioxide storage tank 6 is communicated with an inlet of the heat collecting reactor 2;
the power generation subsystem comprises a turbine 8, wherein an outlet of the turbine 8 is communicated with a hot side inlet of a heat regenerator 9, a hot side outlet of the heat regenerator 9 is communicated with a hot side inlet of a precooler 10, a hot side outlet of the precooler 10 is communicated with an inlet of a compressor 11, an outlet of the compressor 11 is communicated with a cold side inlet of the heat regenerator 9, a cold side outlet of the heat regenerator 9 is communicated with a shell side inlet of an exothermic reactor 5, and a shell side outlet of the exothermic reactor 5 is communicated with an inlet of the turbine 8.
The thermal reactor 2 is provided with a mirror field 1 corresponding to the thermal reactor 2 for focusing sunlight on the thermal reactor 2.
The heat collecting reactor 2 is loaded with a methane reforming catalyst, and the tube side of the exothermic reactor 5 is loaded with a methanation catalyst.
The turbine 8 is linked with the energy storage working medium compressor 4 through a coupler, and the turbine 8 is linked with the compressor 11 and the generator 12 through couplers.
A valve 7 is arranged between the outlet of the methane and carbon dioxide storage tank 6 and the inlet of the heat collecting reactor 2.
The exothermic reactor 5 is a shell-and-tube reactor.
A supercritical carbon dioxide power generation method based on methane reforming energy storage comprises the following steps;
when solar radiation is sufficient, the valve 7 is opened, methane and carbon dioxide in the methane and carbon dioxide storage tank 6 enter the heat collection reactor 2, methane reforming reaction is carried out under the catalytic action of a methane reforming catalyst, heat of the heat collection reactor 2 is absorbed, carbon monoxide and hydrogen are generated and enter the carbon monoxide and hydrogen storage tank 3, the carbon monoxide and hydrogen enter the tube pass of the exothermic reactor 5 after being pressurized by the energy storage working medium compressor 4 and are contacted with a methanation catalyst in the tube pass, and the carbon monoxide and hydrogen are subjected to methanation reaction to release heat to generate methane and carbon dioxide and enter the methane and carbon dioxide storage tank 6; after absorbing heat released by tube-side methanation reaction, carbon dioxide on the shell side of the exothermic reactor 5 enters a turbine 8 to do work, the carbon dioxide doing work enters the hot side of a regenerator 9, exchanges heat with carbon dioxide on the cold side of the regenerator 9, enters the hot side of a precooler 10, is further cooled, enters an inlet of a compressor 11, is compressed by the compressor 11, enters the hot side of the regenerator 9, exchanges heat with carbon dioxide on the hot side of the regenerator 9, and enters the shell side of the exothermic reactor 5, because solar radiation is sufficient, the amount of methane reforming reaction is larger than that of methanation reaction, a part of carbon monoxide and hydrogen are stored in a carbon monoxide and hydrogen storage tank 3, the turbine 8 drags an energy storage working medium compressor 4 and the compressor 11 to rotate through a coupler, and redundant work drags a generator 12 to rotate to generate electricity;
when solar radiation does not exist, the valve 7 is closed, the carbon monoxide and the hydrogen stored in the carbon monoxide and hydrogen storage tank 3 are pressurized by the energy storage working medium compressor 4 and then enter the tube pass of the exothermic reactor 5 to be contacted with the methanation catalyst in the tube pass, the carbon monoxide and the hydrogen are subjected to methanation reaction to release heat, and methane and carbon dioxide are generated and enter the methane and carbon dioxide storage tank 6; after absorbing the heat released by the tube-side methanation reaction, the carbon dioxide on the shell side of the exothermic reactor 5 enters a turbine 8 to do work, the carbon dioxide which does work enters the hot side of a heat regenerator 9, after exchanging heat with the carbon dioxide at the cold side of the heat regenerator 9, the heat-exchanged carbon dioxide enters the hot side of the precooler 10, after further cooling, the heat-exchanged carbon dioxide enters the inlet of the compressor 11, after being compressed by the compressor 11, the heat-exchanged carbon dioxide enters the hot side of the heat regenerator 9, exchanges heat with the carbon dioxide at the hot side of the heat regenerator 9, and enters the shell side of the exothermic reactor 5, because no solar radiation exists, only methanation reaction occurs, the carbon monoxide and the hydrogen stored in the carbon monoxide and hydrogen storage tank 3 generate methane and carbon dioxide after passing through the exothermic reactor 5, the methane and the carbon dioxide are stored in the methane and carbon dioxide storage tank 6, the turbine 8 drags the energy storage working medium compressor 4 and the compressor 11 to rotate through the coupler, and redundant work drags the generator 12 to rotate for power generation.
The invention has the beneficial effects that:
when the supercritical carbon dioxide power generation system based on methane reforming energy storage works specifically, solar energy is used for providing heat for methane reforming through the heat collection reactor, and heat is provided for supercritical carbon dioxide Brayton cycle power generation through methanation reaction heat release in the exothermic reactor, so that organic combination of solar methane reforming energy storage and supercritical carbon dioxide power generation is realized.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention.
Wherein, 1 is a mirror field, 2 is a heat collecting reactor, 3 is a carbon monoxide and hydrogen storage tank, 4 is an energy storage working medium compressor, 5 is an exothermic reactor, 6 is a methane and carbon dioxide storage tank, 7 is a valve, 8 is a turbine, 9 is a heat regenerator, 10 is a precooler, 11 is a compressor, and 12 is a generator.
Detailed Description
The present invention will be described in further detail with reference to examples.
Referring to fig. 1, the supercritical carbon dioxide power generation system based on methane reforming energy storage comprises an energy storage subsystem and a power generation subsystem, wherein the energy storage subsystem comprises a mirror field 1, a heat collection reactor 2, a carbon monoxide and hydrogen storage tank 3, an energy storage working medium compressor 4, an exothermic reactor 5, a methane and carbon dioxide storage tank 6 and a valve 7. The power generation subsystem comprises a turbine 8, a heat regenerator 9, a precooler 10, a compressor 11 and a generator 12.
The outlet of the heat collecting reactor 2 is communicated with the inlet of the carbon monoxide and hydrogen storage tank 3, the outlet of the carbon monoxide and hydrogen storage tank 3 is communicated with the inlet of the energy storage working medium compressor 4, the outlet of the energy storage working medium compressor 4 is communicated with the tube pass inlet of the exothermic reactor 5, the tube pass outlet of the exothermic reactor 5 is communicated with the inlet of the methane and carbon dioxide storage tank 6, the outlet of the methane and carbon dioxide storage tank 6 is communicated with the inlet of the valve 7, and the outlet of the valve 7 is communicated with the inlet of the heat collecting reactor 2.
The heat-collecting reactor 2 is loaded with a methane reforming catalyst, and the tube side of the exothermic reactor 5 is loaded with a methanation catalyst.
The shell-side outlet of the exothermic reactor 5 is communicated with the inlet of the turbine 8, the outlet of the turbine 8 is communicated with the hot-side inlet of the heat regenerator 9, the hot-side outlet of the heat regenerator 9 is communicated with the hot-side inlet of the precooler 10, the hot-side outlet of the precooler 10 is communicated with the inlet of the compressor 11, the outlet of the compressor 11 is communicated with the cold-side inlet of the heat regenerator 9, and the cold-side outlet of the heat regenerator 9 is communicated with the shell-side inlet of the exothermic reactor 5.
The turbine 8 is linked with the energy storage working medium compressor 4 through a coupler, and the turbine 8 is linked with the compressor 11 and the generator 12 through couplers.
Preferably, a valve 7 is provided between the outlet of the methane and carbon dioxide storage tank 6 and the inlet of the thermal reactor 2.
The mirror field 1 collects sunlight onto a heat collecting reactor 2, methane and carbon dioxide pass through a methane reforming catalyst in the heat collecting reactor 2, the methane and the carbon dioxide undergo a methane reforming reaction at the temperature of 700 ℃ and 800 ℃ under normal pressure to absorb heat of the heat collecting reactor 2 to generate carbon monoxide and hydrogen, the carbon monoxide and the hydrogen enter a carbon monoxide and hydrogen storage tank 3, the carbon monoxide and the hydrogen are compressed by an energy storage working medium compressor 4, the carbon monoxide and the hydrogen are pressurized to 1.5MPa and enter a tube pass of an exothermic reactor 5 to be contacted with the methanation catalyst in the tube pass, the carbon monoxide and the hydrogen undergo a methanation reaction at the temperature of 1.5MPa and 500 ℃ to release heat, the methane and the carbon dioxide are generated and enter a methane and carbon dioxide storage tank 6, and the methane and the carbon dioxide enter the heat collecting reactor 2 after passing through a valve 7 to continue the methane.
After absorbing heat released by the tube-side methanation reaction, carbon dioxide on the shell side of the exothermic reactor 5 enters the turbine 8 to do work, the carbon dioxide which does work enters the hot side of the heat regenerator 9, exchanges heat with carbon dioxide on the cold side of the heat regenerator 9 and then enters the hot side of the precooler 10, after further cooling, enters the inlet of the compressor 11, is compressed by the compressor 11, enters the hot side of the heat regenerator 9, exchanges heat with carbon dioxide on the hot side of the heat regenerator 9, enters the shell side of the exothermic reactor 5, and the cycle is completed.
The turbine 8 drags the energy storage working medium compressor 4, the compressor 11 and the generator 12 to rotate through the coupler.
When solar radiation is sufficient, the valve 7 is opened, methane and carbon dioxide in the methane and carbon dioxide storage tank 6 enter the heat collecting reactor 2, under the catalytic action of the methane reforming catalyst, methane and carbon dioxide undergo a methane reforming reaction at 800 ℃ and normal pressure to absorb heat of the heat collecting reactor 2 to generate carbon monoxide and hydrogen, the carbon monoxide and hydrogen enter the carbon monoxide and hydrogen storage tank 3, the carbon monoxide and hydrogen are compressed by the energy storage working medium compressor 4 and then pressurized to 1.5MPa, the carbon monoxide and hydrogen enter the tube pass of the heat release reactor 5 and contact the methanation catalyst in the tube pass, and the carbon monoxide and hydrogen undergo a methanation reaction at 600 ℃ at 1.5MPa and 500 ℃ to release heat to generate methane and carbon dioxide, and the methane and carbon dioxide enter the methane and carbon dioxide storage tank 6. After absorbing heat released by tube-side methanation reaction, carbon dioxide on the shell side of the exothermic reactor 5 enters a turbine 8 to do work, the carbon dioxide which does work enters the hot side of a heat regenerator 9, exchanges heat with carbon dioxide on the cold side of the heat regenerator 9 and then enters the hot side of a precooler 10, the carbon dioxide enters the inlet of a compressor 11 after being further cooled, the carbon dioxide is compressed by the compressor 11 and then enters the hot side of the heat regenerator 9, exchanges heat with the carbon dioxide on the hot side of the heat regenerator 9 and enters the shell side of the exothermic reactor 5, because solar radiation is sufficient, the methane reforming reaction amount is larger than the methanation reaction amount, and a part of carbon monoxide and hydrogen are stored in a carbon monoxide and hydrogen storage tank 3. The turbine 8 drags the energy storage working medium compressor 4 and the compressor 11 to rotate through the coupler, and redundant work drags the generator 12 to rotate for power generation.
When no solar radiation exists, the valve 7 is closed, the carbon monoxide and the hydrogen stored in the carbon monoxide and hydrogen storage tank 3 are pressurized by the energy storage working medium compressor 4 and then enter the tube pass of the exothermic reactor 5 to be contacted with the methanation catalyst in the tube pass, the carbon monoxide and the hydrogen are subjected to methanation reaction at the temperature of 1.5MPa and 500-600 ℃, heat is released, and methane and carbon dioxide are generated and enter the methane and carbon dioxide storage tank 6. After absorbing heat released by tube-side methanation reaction, carbon dioxide on the shell side of the exothermic reactor 5 enters a turbine 8 to do work, the carbon dioxide which does work enters the hot side of a regenerator 9, exchanges heat with carbon dioxide on the cold side of the regenerator 9 and then enters the hot side of a precooler 10, is further cooled and then enters the inlet of a compressor 11, is compressed by the compressor 11 and then enters the hot side of the regenerator 9, exchanges heat with the carbon dioxide on the hot side of the regenerator 9 and enters the shell side of the exothermic reactor 5, only methanation reaction occurs due to no solar radiation, and carbon monoxide and hydrogen stored in a carbon monoxide and hydrogen storage tank 3 generate methane and carbon dioxide after passing through the exothermic reactor 5 and are stored in a methane and carbon dioxide storage tank 6. The turbine 8 drags the energy storage working medium compressor 4 and the compressor 11 to rotate through the coupler, and redundant work drags the generator 12 to rotate for power generation.
It should be noted that the above-mentioned embodiments are only intended to illustrate the technical idea and features of the present invention, and that the specific implementation methods, such as the operation conditions of the thermal reactor 2 and the exothermic reactor 5, etc., can be modified and improved without thereby departing from the scope and essential spirit of the present invention as defined in the claims.
Claims (6)
1. A supercritical carbon dioxide power generation system based on methane reforming energy storage is characterized by comprising an energy storage subsystem and a power generation subsystem;
the energy storage subsystem comprises a heat collecting reactor (2), wherein an outlet of the heat collecting reactor (2) is communicated with an inlet of a carbon monoxide and hydrogen storage tank (3), an outlet of the carbon monoxide and hydrogen storage tank (3) is communicated with an inlet of an energy storage working medium compressor (4), an outlet of the energy storage working medium compressor (4) is communicated with a tube side inlet of an exothermic reactor (5), a tube side outlet of the exothermic reactor (5) is communicated with an inlet of a methane and carbon dioxide storage tank (6), and an outlet of the methane and carbon dioxide storage tank (6) is communicated with an inlet of the heat collecting reactor (2);
the power generation subsystem comprises a turbine (8), wherein an outlet of the turbine (8) is communicated with a hot side inlet of a heat regenerator (9), a hot side outlet of the heat regenerator (9) is communicated with a hot side inlet of a precooler (10), a hot side outlet of the precooler (10) is communicated with an inlet of a compressor (11), an outlet of the compressor (11) is communicated with a cold side inlet of the heat regenerator (9), a cold side outlet of the heat regenerator (9) is communicated with a shell side inlet of an exothermic reactor (5), and a shell side outlet of the exothermic reactor (5) is communicated with an inlet of the turbine (8);
the corresponding position of the heat collecting reactor (2) is provided with a mirror field (1) for focusing sunlight on the heat collecting reactor (2).
2. The supercritical carbon dioxide power generation system based on methane reforming energy storage according to claim 1, characterized in that the thermal-collecting reactor (2) is loaded with methane reforming catalyst, and the tube side of the exothermic reactor (5) is loaded with methanation catalyst.
3. The supercritical carbon dioxide power generation system based on methane reforming energy storage according to claim 1, characterized in that the turbine (8) is linked with the energy storage working medium compressor (4) through a coupler, and the turbine (8) is linked with the compressor (11) and the generator (12) through a coupler.
4. The supercritical carbon dioxide power generation system based on methane reforming energy storage according to claim 1, characterized in that a valve (7) is arranged between the outlet of the methane and carbon dioxide storage tank (6) and the inlet of the thermal reactor (2).
5. The supercritical carbon dioxide power generation system based on methane reforming energy storage according to claim 1, characterized in that the exothermic reactor (5) is a shell and tube reactor.
6. The supercritical carbon dioxide power generation method based on methane reforming energy storage is characterized by comprising the following steps;
when solar radiation is sufficient, a valve (7) is opened, methane and carbon dioxide in a methane and carbon dioxide storage tank (6) enter a heat collecting reactor (2), methane reforming reaction is carried out under the catalytic action of a methane reforming catalyst, heat of the heat collecting reactor (2) is absorbed, carbon monoxide and hydrogen are generated and enter a carbon monoxide and hydrogen storage tank (3), the carbon monoxide and the hydrogen enter a tube pass of an exothermic reactor (5) after being pressurized by an energy storage working medium compressor (4) and are contacted with a methanation catalyst in the tube pass, methanation reaction is carried out on the carbon monoxide and the hydrogen, heat is released, methane and carbon dioxide are generated and enter the methane and carbon dioxide storage tank (6); after the carbon dioxide in the shell side of the exothermic reactor (5) absorbs the heat released by the methanation reaction in the tube side, enters a turbine (8) to do work, the carbon dioxide after doing work enters the hot side of a heat regenerator (9), after exchanging heat with the carbon dioxide at the cold side of the heat regenerator (9), the carbon dioxide enters the hot side of the precooler (10), after being further cooled, the carbon dioxide enters the inlet of the compressor (11), after being compressed by the compressor (11), the carbon dioxide enters the hot side of the heat regenerator (9), exchanges heat with carbon dioxide at the hot side of the heat regenerator (9) and enters the shell side of the exothermic reactor (5), because the solar radiation is sufficient, the amount of methane reforming reaction is larger than that of methanation reaction, a part of carbon monoxide and hydrogen are stored in a carbon monoxide and hydrogen storage tank (3), the turbine (8) drags the energy storage working medium compressor (4) and the compressor (11) to rotate through the coupler, and redundant work drags the generator (12) to rotate for power generation;
when no solar radiation exists, the valve (7) is closed, the carbon monoxide and the hydrogen stored in the carbon monoxide and hydrogen storage tank (3) are pressurized by the energy storage working medium compressor (4) and then enter the tube pass of the exothermic reactor (5) to be contacted with the methanation catalyst in the tube pass, the carbon monoxide and the hydrogen are subjected to methanation reaction, heat is released, and methane and carbon dioxide are generated and enter the methane and carbon dioxide storage tank (6); carbon dioxide on the shell side of the exothermic reactor (5) absorbs heat released by the tube-side methanation reaction, enters a turbine (8) to do work, the carbon dioxide which does work enters the hot side of a regenerator (9), exchanges heat with carbon dioxide on the cold side of the regenerator (9), enters the hot side of a precooler (10), is further cooled, enters the inlet of a compressor (11), is compressed by the compressor (11), enters the hot side of the regenerator (9), exchanges heat with carbon dioxide on the hot side of the regenerator (9), enters the shell side of the exothermic reactor (5), only methanation reaction occurs due to no solar radiation, carbon monoxide and hydrogen stored in a carbon monoxide and hydrogen storage tank (3) generate methane and carbon dioxide after passing through the exothermic reactor (5), the methane and carbon dioxide are stored in a methane and carbon dioxide storage tank (6), the turbine (8) drags an energy storage working medium compressor (4) through a coupler, The compressor (11) rotates, and the redundant work drags the generator (12) to rotate to generate electricity.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010656096.2A CN111663975A (en) | 2020-07-09 | 2020-07-09 | Supercritical carbon dioxide power generation system and method based on methane reforming energy storage |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112539673A (en) * | 2020-12-02 | 2021-03-23 | 上海发电设备成套设计研究院有限责任公司 | Electric-thermal-electric energy storage system and method |
| CN113860329A (en) * | 2021-10-29 | 2021-12-31 | 西安热工研究院有限公司 | Chemical energy storage system and method based on synthetic ammonia |
| CN113982835A (en) * | 2021-11-04 | 2022-01-28 | 西安热工研究院有限公司 | Chemical energy storage system and method based on synthetic methanol |
| CN114262262A (en) * | 2021-12-27 | 2022-04-01 | 西安热工研究院有限公司 | Energy storage system and method for preparing methanol by using synthetic methanol waste gas |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539673A (en) * | 2020-12-02 | 2021-03-23 | 上海发电设备成套设计研究院有限责任公司 | Electric-thermal-electric energy storage system and method |
| CN113860329A (en) * | 2021-10-29 | 2021-12-31 | 西安热工研究院有限公司 | Chemical energy storage system and method based on synthetic ammonia |
| CN113982835A (en) * | 2021-11-04 | 2022-01-28 | 西安热工研究院有限公司 | Chemical energy storage system and method based on synthetic methanol |
| CN114262262A (en) * | 2021-12-27 | 2022-04-01 | 西安热工研究院有限公司 | Energy storage system and method for preparing methanol by using synthetic methanol waste gas |
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