CN211258905U - Solar energy and wind energy and fuel gas complementary combined hydrogen production methane production circulating thermal power generation device - Google Patents
Solar energy and wind energy and fuel gas complementary combined hydrogen production methane production circulating thermal power generation device Download PDFInfo
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- CN211258905U CN211258905U CN201922030903.5U CN201922030903U CN211258905U CN 211258905 U CN211258905 U CN 211258905U CN 201922030903 U CN201922030903 U CN 201922030903U CN 211258905 U CN211258905 U CN 211258905U
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 116
- 238000010248 power generation Methods 0.000 title claims abstract description 92
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 239000001257 hydrogen Substances 0.000 title claims abstract description 71
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 71
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 59
- 230000000295 complement effect Effects 0.000 title claims abstract description 18
- 239000002737 fuel gas Substances 0.000 title claims description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 152
- 239000007789 gas Substances 0.000 claims abstract description 113
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 89
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 76
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 76
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 34
- 238000005338 heat storage Methods 0.000 claims abstract description 27
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000001301 oxygen Substances 0.000 claims abstract description 21
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 21
- 238000002360 preparation method Methods 0.000 claims abstract description 16
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000009833 condensation Methods 0.000 claims abstract description 7
- 230000005494 condensation Effects 0.000 claims abstract description 7
- 238000003860 storage Methods 0.000 claims description 60
- 238000002485 combustion reaction Methods 0.000 claims description 29
- 239000003345 natural gas Substances 0.000 claims description 26
- 238000000926 separation method Methods 0.000 claims description 15
- 238000005984 hydrogenation reaction Methods 0.000 claims description 12
- 239000002893 slag Substances 0.000 claims description 10
- 239000007787 solid Substances 0.000 claims description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 claims description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000002028 Biomass Substances 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 238000003723 Smelting Methods 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000004568 cement Substances 0.000 claims description 2
- 239000003245 coal Substances 0.000 claims description 2
- 239000003034 coal gas Substances 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 239000000446 fuel Substances 0.000 claims description 2
- 238000002309 gasification Methods 0.000 claims description 2
- 239000010438 granite Substances 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000003949 liquefied natural gas Substances 0.000 claims description 2
- 239000003915 liquefied petroleum gas Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 claims description 2
- 239000011044 quartzite Substances 0.000 claims description 2
- 239000011435 rock Substances 0.000 claims description 2
- 229920002545 silicone oil Polymers 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000002699 waste material Substances 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 13
- 229910001882 dioxygen Inorganic materials 0.000 abstract description 7
- 238000004140 cleaning Methods 0.000 abstract description 2
- 230000007547 defect Effects 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000002407 reforming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model discloses a solar energy wind energy and gas complementary combined hydrogen production methane-making circulating thermal power generation device, organically grafts the groove type solar thermal power generation technology in a semi-closed supercritical carbon dioxide gas Brayton thermal power generation system, and avoids the inherent defect of instability and discontinuity of solar thermal power generation through complementary heat storage circulating power generation; meanwhile, water generated by pure oxygen gas power generation is used for hydrogen production and oxygen production through electrolysis, the carbon dioxide separated from steam and water is used as a power working medium, the rest part of the carbon dioxide is subjected to hydromethanation preparation, the prepared methane gas is stored, and oxygen obtained by hydrogen production through water electrolysis by using renewable energy is used for the pure oxygen gas Brayton high-efficiency power generation of the system; the water generated by the condensation of the system and the water generated by the hydromethanation are directly supplied to the groove type solar thermal power generation system for recycling after being stored, and the water is used as a water source for cleaning a solar mirror field. The invention belongs to the interdisciplinary technical field of solar thermal power generation and high-temperature thermochemistry.
Description
Technical Field
The novel solar energy and wind energy and gas complementary combined hydrogen production methane production circulating thermal power generation device organically grafts the groove type solar thermal power generation technology in a semi-closed supercritical carbon dioxide gas Brayton thermal power generation system, and avoids the inherent defect of instability and discontinuity of solar thermal power generation through complementary heat storage circulating power generation; meanwhile, water generated by pure oxygen gas power generation is used for hydrogen production and oxygen production through electrolysis, the carbon dioxide separated from steam and water is used as a power working medium, the rest part of the carbon dioxide is subjected to hydromethanation preparation, the prepared methane gas is stored, and oxygen obtained by hydrogen production through water electrolysis by using renewable energy is used for the pure oxygen gas Brayton high-efficiency power generation of the system; the water generated by the condensation of the system and the water generated by the hydromethanation are directly supplied to the groove type solar thermal power generation system for recycling after being stored, and the water is used as a water source for cleaning a solar mirror field. The invention belongs to the interdisciplinary technical field of solar thermal power generation and high-temperature thermochemistry.
Background
Since international society advocates reduction of carbon dioxide and nitrogen oxide emissions in coal-fired or gas-fired power plants, zero-emission pure oxygen gas power generation technology, that is, semi-closed supercritical carbon dioxide brayton gas thermal power generation technology, is further developed, for example, the "graetz cycle" mode proposed by university of graetz theory of austria, and the DSG mode proposed by CES of clean energy companies in usa, all striving to combine semi-closed supercritical carbon dioxide brayton cycle and steam rankine cycle power generation at the same point, and trying to achieve thermal cycle efficiency as high as 70%, although these technologies are subjected to small-scale verification, commercial development is not advanced. Recently eight river companies in the united states claimed zero emission gas power generation using the "alam cycle" model, and a 25 megawatt pilot project is currently being established in laborde, texas, usa. The authors found that the enterprise had patents in our country such as 201180016993.6, and the technology was listed as one of the ten-year inventions by the national academy of labor in the Massachusetts in the early 2018, and the technology was considered to possibly change the world energy pattern. Wuhankaidi proposes that renewable energy power is used for electrolyzing water to produce hydrogen in the earlier published patent 201210121972.7 of China, and then carbon dioxide is captured in industrial flue gas for hydromethanation; the patent 201280031148.0 of the american ztick company proposes reforming hydrogen production and power generation by means of renewable energy, the patent 201310525283.7 of mitsubishi hitachi, japan claims that hydrogen is produced by electrolyzing water by using renewable energy, and carbon dioxide separated by pure oxygen gas power generation is hydromethanated, although the structure is simple, the leading idea of establishing a global carbon dioxide circulation strategy system is inherited, and only improvement is needed for fully utilizing heat and water generated by carbon dioxide hydromethanation, how to select and configure efficient hydrogen production equipment by electrolyzing water, and the combination of pure oxygen combustion brayton cycle power generation and rankine steam power generation, and the like, and the complementary realization of other renewable energy power generation technologies is realized.
Objectively, the research of the zero-emission pure oxygen gas power generation technology in the thermal power generation industry in China has not really started, and a scientific research subject for realizing the circular thermal power generation by the technology and carbon dioxide hydromethanation is yet to be established, and the subject is related to the energy transformation of China.
Disclosure of Invention
The utility model aims to solve the technical problems of improving the technology for realizing complementation of solar thermal power generation and semi-closed supercritical carbon dioxide gas Brayton thermal power generation provided in patents 201310180460.2 and 201610856317.4 and patent applications 201810585123.4 and 20181043091.6, not only realizing the cyclic thermal power generation by realizing the complementary combined hydrogen production and methane production of solar energy and wind energy and gas, meanwhile, the heat energy generated by the fuel gas is fully utilized to carry out complementary heat storage on the groove type solar thermal power generation system, so that methane gas is stored, a new heat storage heat source is provided for solar thermal power generation, and further, water prepared by methane combustion through pure oxygen and carbon dioxide methanation is directly supplied to a solar thermal power station for use, so that the initial investment and the operation cost of the solar thermal power station are greatly reduced, and the condition limitation of the solar thermal power station on site selection due to water sources is eliminated.
The utility model discloses a realize through following technical scheme:
the solar energy and wind energy and fuel gas complementary combined hydrogen production methane production circulating thermal power generation device comprises a groove type solar thermal power generation system, and mainly comprises a light condensation array and a control device thereof, a heat storage tank, a heat transfer medium, an evaporator and a pressure pump; wind power systems, photovoltaic power generation systems; the semi-closed supercritical carbon dioxide gas Brayton thermal power generation system comprises a main turbine, an auxiliary turbine, a combustion chamber, a heat regenerator, a heat exchanger, a main compressor, an auxiliary compressor, a condenser, a steam-water separation device, a carbon dioxide gas bag and a water storage tank; a generator set; a pressure pump, a three-way valve and a carbon dioxide gas pipeline; a gas storage tank and a natural gas interface; a control system is formed; an oxygen-containing gas storage tank, a hydrogen storage tank, a heat exchanger, a condenser, a prepared air separation unit, an auxiliary nitrogen storage tank and an auxiliary argon storage tank of the water electrolysis hydrogen production and carbon dioxide hydrogenation methanation device; a pressure pump; the steam Rankine cycle power generation system comprises an evaporator, a turbine, a generator set, a condenser, a pressure pump and a deaerating device; the power rectifier configured for alternating current is connected with the water electrolysis hydrogen production device, and is characterized in that: the outlet of the groove type solar light-gathering array is connected with the inlet of the high-temperature heat exchanger through a three-way valve, and is simultaneously connected with the inlet of the heat storage tank, the outlet of the corresponding high-temperature heat exchanger is connected with the inlet of the three-way valve, two outlets of the three-way valve are respectively connected with the inlet of the heat storage tank and the inlet of the evaporator, the outlet of the heat storage tank is respectively connected with the inlet of two pressure pumps through the three-way valve, the outlet of the evaporator is connected with the inlet of the pressure pump, the outlet of the pressure pump is connected with one end of the three-way valve of the outlet of the; an outlet of a steam generation end of the evaporator is connected with an superheated steam inlet end of the heat exchanger, and an outlet of the evaporator is sequentially connected with a steam turbine, a condenser, a pressure pump, a water replenishing three-way valve and the evaporator, so that Rankine cycle power generation of steam is realized; the outlet of one end of a combustion chamber of the semi-closed supercritical carbon dioxide gas Brayton thermal power generation system is connected with the inlets of a main turbine and an auxiliary turbine, the main turbine and the auxiliary turbine coaxially drive a power generator, the outlet of the main turbine and the turbine is connected with the inlet of one end of a heat exchanger, the outlet of the heat exchanger is connected with the outlet of a heat regenerator and the inlet of a condenser, the condensing outlet is connected with a steam-water separation device, the outlet of the steam-water separation device is respectively connected with a water storage tank and a carbon dioxide steam drum, the carbon dioxide steam drum is connected with the inlets of the main compressor and the auxiliary, the corresponding outlet is connected with the inlet of the combustion chamber to convey the pressurized high-temperature carbon dioxide gas, the other two inlets of the combustion chamber are connected with the outlet of an oxygen tank and the outlet of a gas storage cabinet for storing natural gas, an auxiliary turbine coaxially drives a main compressor and an auxiliary compressor to operate, and the outlet of the auxiliary turbine is connected with the inlet of a heat regenerator; the outlet of the auxiliary compressor is connected with the inlet of the carbon dioxide hydrogenation methanation preparation device; the outlet of the main gas compressor is connected with the inlet of a heat regenerator, the outlet of the main gas compressor is connected with the inlet of a heat exchanger, one end of a water storage tank is connected with a pressure pump, the outlet of the pressure pump is connected with the inlet of the heat exchanger, and the corresponding outlet of the pressure pump is connected with a solid oxide water electrolysis hydrogen production device to carry out high-temperature steam electrolysis hydrogen production or bypass the heat exchanger to convey water to an alkaline water electrolysis; the prepared oxygen is connected with an oxygen storage tank through a gas pipeline to a combustion chamber to be mixed and combusted with methane, the prepared hydrogen is connected with the other inlet of the carbon dioxide hydromethanation preparation device through a hydrogen storage tank and a gas pipeline, the prepared hydrogen is mixed with pressurized carbon dioxide from an auxiliary compressor to prepare methane, and the outlet of the prepared hydrogen is connected with a gas storage cabinet; the other inlet of the gas storage cabinet is connected with a natural gas conveying pipeline; the outlet of the gas storage cabinet is connected with the combustion chamber and used for conveying natural gas or mixed gas of the natural gas and the natural gas; the outlet of the combustion chamber is connected with the inlets of the main turbine and the auxiliary turbine, so that a semi-closed supercritical carbon dioxide gas Brayton complementary thermal power generation cycle is realized; the water electrolysis hydrogen production device is connected with a power rectifier, and the power rectifier receives power from solar energy, wind energy or other renewable energy sources or excess power of an electric network overload; the high-temperature steam outlet of the carbon dioxide hydrogenation methanation preparation device is sequentially connected with a heat exchanger, a condenser and a water storage tank, and the other end of the heat exchanger is connected with an organic Rankine thermal power generation device or other heat utilization devices; or the high-temperature steam is directly conveyed to an evaporator to be used for electrolytic hydrogen production after being heated;
the other operation mode of the device is that the device is not provided with a groove type solar thermal power generation system, but remains a steam turbine power generation device, and is characterized in that: the water working medium from the water storage tank is connected with the inlet of the evaporator through the pressure pump, the superheated steam is directly driven to work to generate power after high-temperature gasification, the steam discharged from the outlet of the steam turbine is mixed with the carbon dioxide gas from the main gas compressor after being heated and pressurized by the heat regenerator, the mixed gas enters the gas chamber to be mixed and combusted with pure oxygen and natural gas or methane gas, the generated high-temperature mixed gas simultaneously drives the main turbine and the auxiliary turbine of the supercritical carbon dioxide Brayton thermal power generation system to work, the high-temperature mixed gas from the main turbine and the high-temperature mixed gas from the auxiliary turbine enter the heat regenerator through the heat exchanger, then the high-temperature mixed gas enters the condenser, the mixed gas generated by condensation enters the steam-water separation device, the separated water enters the water storage tank, the separated carbon dioxide gas enters the carbon dioxide steam drum, one part of the separated carbon dioxide gas enters the main gas compressor as the power working medium, and mixed with the steam discharged from the steam turbine to enter the combustion chamber again; or the steam discharged by the steam turbine is directly sent to the condenser, and the carbon dioxide gas heated and pressurized by the heat regenerator directly enters the gas chamber to be mixed and combusted with the pure oxygen and the natural gas or the methane gas; the carbon dioxide pressurized by the auxiliary compressor enters a hydromethanation preparation device; one end of the water storage tank is connected with a pressure pump, the outlet of the pressure pump is connected with a water electrolysis hydrogen production device, or is connected with a solid oxide water electrolysis hydrogen production device through an evaporator for electrolysis, and the produced oxygen is sent to an oxygen tank and then sent to a combustion chamber; the prepared hydrogen enters a carbon dioxide hydrogenation methanation device through a hydrogen storage tank to prepare methane, the prepared methane gas enters a gas storage cabinet, and the other inlet of the gas storage cabinet is connected with a natural gas conveying pipeline.
1) The groove type solar thermal power generation system can be replaced by a tower type, Fresnel type or disc type solar thermal power generation system;
2) the heat storage tank is a filling type heat storage device, and the filler comprises ceramics, granite, basalt, igneous rock, quartzite or a mixture thereof; or the recovered metal smelting waste slag with higher heat conductivity coefficient, including iron slag, steel slag, aluminum slag and copper slag, is manufactured, molded and placed in the heat storage tank; or a molded high temperature resistant cement heat storage device; or molten salts stored in ceramic or metal containers;
3) the heat transfer medium is heat conduction oil, or high-temperature silicone oil, or low-crystallization-point molten salt;
4) the water electrolysis hydrogen production device is a solid oxide electrolysis hydrogen production device (SOEC); or a polymer (SPE) hydrogen plant; or a high-temperature water electrolysis hydrogen production device; or an alkaline water electrolysis hydrogen production device;
5) the natural gas can be replaced by methane, coal bed gas, coal gas, biomass gas, synthetic gas and combustible ice gas; or the liquid fuel of alkane comprises methanol, ethanol, dimethyl ether, liquefied natural gas and liquefied petroleum gas.
The device has the greatest technical characteristics that the advantage of combustion pure oxygen efficient power generation of the semi-closed supercritical carbon dioxide gas Brayton thermal power generation system is fully utilized, high-temperature heat energy generated by system operation provides a complementary heat source for groove type solar thermal power generation, water generated by the system can be directly used for steam Rankine cycle power generation, meanwhile, methanation preparation is completed by means of renewable energy, and finally zero-emission cycle thermal power generation with renewable energy as a main body is realized. The technology has another advantage that chemical energy storage and solar energy heat storage are organically combined, so that heat storage and gas storage are realized, and the solar thermal power generation efficiency is obviously improved on the basis of no consumption or little consumption of fossil energy; especially, the environmental adaptability of solar thermal power generation is enhanced, and a technical foundation is laid for establishing a trough type solar thermal power station in a waterless area; the technology is particularly beneficial to reducing the initial investment and unit power generation cost of the solar thermal power station, the solar thermal power generation hours are effectively increased through multi-energy complementation, the capacity of the solar thermal power generation for participating in frequency modulation and peak shaving of a power grid and serving as a power source of power grid base load is enhanced, and manual intervention, controllability and manageability are realized on the basis of realizing zero-emission power generation. Although the solar thermal power generation system is not arranged in the simplified second operation mode, the steam turbine is kept for power generation, and the overall thermal cycle efficiency can be further improved.
Drawings
FIG. 1 is a schematic view of the operation mode of the solar energy, wind energy and fuel gas complementary combined hydrogen production methane production circulating thermal power generation device
FIG. 2 is a schematic diagram of the second operation mode of the solar energy, wind energy and fuel gas complementary combined hydrogen production methane production circulating thermal power generation device
Wherein: 1 groove type solar thermal power generation light-gathering array, 2 evaporator, 3 heat storage tank, 4 heat exchanger, 5 three-way valve, 6 carbon dioxide gas heat transfer pipeline, 7 wind power generation or photovoltaic power generation system, 8 electrolytic water hydrogen production device, 9 carbon dioxide hydrogenation methanation preparation device, 10 oxygen tank, 11 combustion chamber, 12 heat regenerator, 13 gas storage cabinet, 14 water storage tank, 15 carbon dioxide gas bag, 16 main compressor, 17 main turbine, 18 condenser, 19 steam-water separation device, 20 steam Rankine cycle turbine, 21 pressure pump, 22 auxiliary turbine, 23 auxiliary compressor, 24 hydrogen tank, 25 air separation device, 26 nitrogen or argon storage tank, 27 power rectifier
Detailed Description
An outlet of the groove type solar light-gathering array 1 is connected with an inlet of a high-temperature heat exchanger 4 through a three-way valve 5 and is simultaneously connected with an inlet of a heat storage tank 3, an outlet of the corresponding high-temperature heat exchanger 4 is connected with an inlet of the three-way valve 5, two outlets of the three-way valve 5 are respectively connected with an inlet of the heat storage tank 3 and an inlet of an evaporator 2, an outlet of the heat storage tank 3 is respectively connected with an inlet of two pressure pumps 21 through the three-way valve 5, an outlet of the evaporator 2 is connected with an inlet of the pressure pump 21, an outlet of the pressure pump 21 is connected with one end of the three-way valve 5 of the outlet of the heat storage tank 3, an outlet of; the outlet of the steam generation end of the evaporator 2 is connected with the superheated steam inlet end of the heat exchanger 4, and the outlet of the evaporator is sequentially connected with a steam turbine 20, a condenser 18, a pressure pump 21, a water replenishing three-way valve 5 and the evaporator 2, so that the steam Rankine cycle power generation is realized; an outlet at one end of a combustion chamber 11 of the semi-closed supercritical carbon dioxide gas Brayton thermal power generation system is connected with inlets of a main turbine 17 and an auxiliary turbine 22, the main turbine 17 coaxially drives a power generator, an outlet of the main turbine 17 is connected with an inlet at one end of a heat exchanger 4, an outlet of the heat exchanger 4 is connected with an outlet of a regenerator 12 and an inlet of a condenser 18, an outlet of the condenser 18 is connected with a steam-water separation device 19, an outlet of the steam-water separation device 19 is respectively connected with a water storage tank 14 and a carbon dioxide steam drum 15, the carbon dioxide steam drum 15 is connected with inlets of the main compressor 16 and the auxiliary compressor 16, an outlet of the main compressor 16 is connected with an inlet of the regenerator 12 at the other end, an outlet of the regenerator 12 is connected with an inlet of the heat exchanger 4, a corresponding outlet is connected with an inlet of the combustion chamber 11, the auxiliary turbine 22 coaxially drives the main compressor 16 and the auxiliary compressor 23 to operate, and the outlet of the auxiliary turbine 22 is connected with the inlet of the heat regenerator 12; the outlet of the auxiliary gas compressor 23 is connected with the inlet of the carbon dioxide hydromethanation preparation device 9; the outlet of the main air compressor 16 is connected with the inlet of the heat regenerator 12, the outlet is connected with the inlet of the heat exchanger 4, one end of the water storage tank 14 is connected with the pressure pump 21, the outlet of the pressure pump 21 is connected with the inlet of the heat exchanger 4, the corresponding outlet is connected with the solid oxide electrolyzed water hydrogen production device 8 to carry out high-temperature steam electrolysis hydrogen production, or bypasses the heat exchanger 4 to convey water to the alkaline electrolysis hydrogen production device 8; the prepared oxygen is connected with an oxygen storage tank 10 through a gas pipeline to a combustion chamber 11 to be mixed and combusted with methane, the prepared hydrogen is connected with the other inlet of the carbon dioxide hydrogenation methanation preparation device 9 through a hydrogen storage tank 24 and a gas pipeline, and is mixed with pressurized carbon dioxide from an auxiliary compressor 23 to prepare methane, and the outlet is connected with a gas storage cabinet 13; the other inlet of the gas storage cabinet 13 is connected with a natural gas conveying pipeline; the outlet of the gas storage cabinet 13 is connected with the combustion chamber 11 and used for conveying natural gas or mixed gas of the natural gas and the natural gas; the outlet of the combustion chamber 11 is connected with the inlets of the main turbine 16 and the auxiliary turbine 22, so that a semi-closed supercritical carbon dioxide gas Brayton complementary thermal power generation cycle is realized; the water electrolysis hydrogen production device 8 is connected with a power rectifier 27, and the power rectifier 27 receives power from solar energy, wind energy or other renewable energy sources or excess power of an electric network overload; the high-temperature steam outlet of the carbon dioxide hydrogenation methanation preparation device 9 is sequentially connected with a heat exchanger 4, a condenser 18 and a water storage tank 14, and the other end of the heat exchanger 4 is connected with an organic Rankine thermal power generation device or other heat utilization devices; or the high-temperature steam is directly conveyed to the evaporator to be used for electrolytic hydrogen production after being heated.
The other operation mode of the device is that a groove type solar thermal power generation system is not arranged, water from a water storage tank 14 is gasified into superheated steam at high temperature through an evaporator 2 to directly drive a steam turbine 20 to do work power generation, the steam discharged from the outlet of the steam turbine 20 is mixed with carbon dioxide gas from a main air compressor 16 after being heated and pressurized through a heat regenerator 12 and enters a gas chamber 11 together to be mixed and combusted with pure oxygen and natural gas or methane gas, the generated high-temperature mixed gas drives a main turbine 17 and an auxiliary turbine 17 of a supercritical carbon dioxide Brayton thermal power generation system to do work at the same time, the high-temperature mixed gas from the main turbine 17 and the high-temperature mixed gas from the auxiliary turbine 22 enter the heat regenerator 12 through a heat exchanger 4 and then enter a condenser 18, the mixture generated by condensation enters a steam-water separation device 19, the separated water enters the water storage tank 14, the separated carbon dioxide gas enters a carbon dioxide steam drum 15, one part of the working fluid enters a main compressor 16 as a power working fluid, the pressure of the working fluid is increased by the main compressor 16, the working fluid is heated and pressurized by a heat regenerator 12, the working fluid is mixed with steam discharged from a steam Rankine turbine 20 and then enters a combustion chamber 11, and carbon dioxide pressurized by an auxiliary compressor 23 enters a hydromethanation preparation device 9; one end of the water storage tank 14 is connected with a pressure pump 21, the outlet of the pressure pump 21 is connected with an electrolytic hydrogen production device 8, or is connected with the electrolytic hydrogen production device 8 of solid oxide through an evaporator 2 for electrolysis, and the produced oxygen is sent to an oxygen tank 10 and then sent to a combustion chamber 11; the prepared hydrogen enters a carbon dioxide hydrogenation methanation device through a hydrogen storage tank 24 to prepare methane, the prepared methane enters a gas storage cabinet 13, and the other inlet of the gas storage cabinet 13 is connected with a natural gas conveying pipeline.
The utility model discloses be not limited to the above-mentioned range of exemplifying, as long as do not deviate from the utility model discloses the intention principle or equal transform range of application all are within the utility model discloses the protection within range.
Claims (2)
1. The solar energy and wind energy and fuel gas complementary combined hydrogen production methane production circulating thermal power generation device comprises a groove type solar thermal power generation system, a wind power system and a photovoltaic power generation system; the trough type solar thermal power generation system consists of a light condensation array and a control device thereof, a heat storage tank, a heat transfer medium, an evaporator and a pressure pump; the semi-closed supercritical carbon dioxide gas Brayton thermal power generation system consists of a main turbine, an auxiliary turbine, a combustion chamber, a heat regenerator, a heat exchanger, a main compressor, an auxiliary compressor, a condenser, a steam-water separation device, a carbon dioxide gas bag, a water storage tank, a power generator set, a pressure pump, a three-way valve, a carbon dioxide gas pipeline, a gas storage cabinet, a natural gas interface and a control system; the system comprises a water electrolysis hydrogen production and carbon dioxide hydrogenation methanation device, an oxygen-containing gas storage tank, a hydrogen storage tank, a heat exchanger, a condenser, a backup air separation unit, an auxiliary nitrogen storage tank, an argon storage tank and a pressure pump; the steam Rankine cycle power generation system comprises an evaporator, a turbine, a generator set, a condenser, a pressure pump and a deaerating device; the power rectifier configured for alternating current is connected with the water electrolysis hydrogen production device, and is characterized in that: the outlet of the groove type solar light-gathering array is connected with the inlet of the high-temperature heat exchanger through a three-way valve, and is simultaneously connected with the inlet of the heat storage tank, the outlet of the corresponding high-temperature heat exchanger is connected with the inlet of the three-way valve, two outlets of the three-way valve are respectively connected with the inlet of the heat storage tank and the inlet of the evaporator, the outlet of the heat storage tank is respectively connected with the inlet of two pressure pumps through the three-way valve, the outlet of the evaporator is connected with the inlet of the pressure pump, the outlet of the pressure pump is connected with one end of the three-way valve of the outlet of the; an outlet of a steam generation end of the evaporator is connected with an superheated steam inlet end of the heat exchanger, and an outlet of the evaporator is sequentially connected with a steam turbine, a condenser, a pressure pump, a water replenishing three-way valve and the evaporator, so that Rankine cycle power generation of steam is realized; the outlet of one end of a combustion chamber of the semi-closed supercritical carbon dioxide gas Brayton thermal power generation system is connected with the inlets of a main turbine and an auxiliary turbine, the main turbine and the auxiliary turbine coaxially drive a power generator, the outlet of the main turbine and the turbine is connected with the inlet of one end of a heat exchanger, the outlet of the heat exchanger is connected with the outlet of a heat regenerator and the inlet of a condenser, the condensing outlet is connected with a steam-water separation device, the outlet of the steam-water separation device is respectively connected with a water storage tank and a carbon dioxide steam drum, the carbon dioxide steam drum is connected with the inlets of the main compressor and the auxiliary, the corresponding outlet is connected with the inlet of the combustion chamber to convey the pressurized high-temperature carbon dioxide gas, the other two inlets of the combustion chamber are connected with the outlet of an oxygen tank and the outlet of a gas storage cabinet for storing natural gas, an auxiliary turbine coaxially drives a main compressor and an auxiliary compressor to operate, and the outlet of the auxiliary turbine is connected with the inlet of a heat regenerator; the outlet of the auxiliary compressor is connected with the inlet of the carbon dioxide hydrogenation methanation preparation device; the outlet of the main gas compressor is connected with the inlet of a heat regenerator, the outlet of the main gas compressor is connected with the inlet of a heat exchanger, one end of a water storage tank is connected with a pressure pump, the outlet of the pressure pump is connected with the inlet of the heat exchanger, and the corresponding outlet of the pressure pump is connected with a solid oxide water electrolysis hydrogen production device to carry out high-temperature steam electrolysis hydrogen production or bypass the heat exchanger to convey water to an alkaline water electrolysis; the prepared oxygen is connected with an oxygen storage tank through a gas pipeline to a combustion chamber to be mixed and combusted with methane, the prepared hydrogen is connected with the other inlet of the carbon dioxide hydromethanation preparation device through a hydrogen storage tank and a gas pipeline, the prepared hydrogen is mixed with pressurized carbon dioxide from an auxiliary compressor to prepare methane, and the outlet of the prepared hydrogen is connected with a gas storage cabinet; the other inlet of the gas storage cabinet is connected with a natural gas conveying pipeline; the outlet of the gas storage cabinet is connected with the combustion chamber and used for conveying natural gas or mixed gas of the natural gas and the natural gas; the outlet of the combustion chamber is connected with the inlets of the main turbine and the auxiliary turbine, so that a semi-closed supercritical carbon dioxide gas Brayton complementary thermal power generation cycle is realized; the water electrolysis hydrogen production device is connected with a power rectifier, and the power rectifier receives power from solar energy and wind energy renewable energy sources or excess power of an electric network overload; the high-temperature steam outlet of the carbon dioxide hydrogenation methanation preparation device is sequentially connected with a heat exchanger, a condenser and a water storage tank, and the other end of the heat exchanger is connected with an organic Rankine thermal power generation device or a heat utilization device; or the high-temperature steam is directly conveyed to an evaporator to be used for electrolytic hydrogen production after being heated;
1) the groove type solar thermal power generation system can be replaced by a tower type, Fresnel type or disc type solar thermal power generation system;
2) the heat storage tank is a filling type heat storage device, and the filler comprises ceramics, granite, basalt, igneous rock, quartzite or a mixture thereof; or the recovered metal smelting waste slag with higher heat conductivity coefficient, including iron slag, steel slag, aluminum slag and copper slag, is manufactured, molded and placed in the heat storage tank; or a molded high temperature resistant cement heat storage device; or molten salts stored in ceramic or metal containers;
3) the heat transfer medium is heat conduction oil, or high-temperature silicone oil, or low-crystallization-point molten salt;
4) the water electrolysis hydrogen production device is a solid oxide electrolysis hydrogen production device (SOEC); or a polymer (SPE) hydrogen plant; or a high-temperature water electrolysis hydrogen production device; or an alkaline water electrolysis hydrogen production device;
5) the natural gas can be replaced by methane, coal bed gas, coal gas, biomass gas, synthetic gas and combustible ice gas; or the liquid fuel of alkane comprises methanol, ethanol, dimethyl ether, liquefied natural gas and liquefied petroleum gas.
2. The solar energy, wind energy and fuel gas complementary combined hydrogen production and methane production cyclic thermal power generation device according to claim 1, which is not provided with a groove type solar thermal power generation system, but remains a steam turbine power generation device, and is characterized in that: the water working medium from the water storage tank is connected with the inlet of the evaporator through the pressure pump, the superheated steam is directly driven to work to generate power after high-temperature gasification, the steam discharged from the outlet of the steam turbine is mixed with the carbon dioxide gas from the main gas compressor after being heated and pressurized by the heat regenerator, the mixed gas enters the gas chamber to be mixed and combusted with pure oxygen and natural gas or methane gas, the generated high-temperature mixed gas simultaneously drives the main turbine and the auxiliary turbine of the supercritical carbon dioxide Brayton thermal power generation system to work, the high-temperature mixed gas from the main turbine and the high-temperature mixed gas from the auxiliary turbine enter the heat regenerator through the evaporator, then the high-temperature mixed gas enters the condenser, the mixture generated by condensation enters the steam-water separation device, the separated water enters the water storage tank, the separated carbon dioxide gas enters the carbon dioxide steam drum, one part of the separated carbon dioxide gas enters the main gas compressor as the power working medium, the pressure, and mixed with the steam discharged from the steam turbine to enter the combustion chamber again; or the steam discharged by the steam turbine is directly sent to the condenser, and the carbon dioxide gas heated and pressurized by the heat regenerator directly enters the gas chamber to be mixed and combusted with the pure oxygen and the natural gas or the methane gas; the carbon dioxide pressurized by the auxiliary compressor enters a hydromethanation preparation device; one end of the water storage tank is connected with a pressure pump, the outlet of the pressure pump is connected with a water electrolysis hydrogen production device, or is connected with a solid oxide water electrolysis hydrogen production device through an evaporator for electrolysis, and the produced oxygen is sent to an oxygen tank and then sent to a combustion chamber; the prepared hydrogen enters a carbon dioxide hydrogenation methanation device through a hydrogen storage tank to prepare methane, the prepared methane gas enters a gas storage cabinet, and the other inlet of the gas storage cabinet is connected with a natural gas conveying pipeline.
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