CN215403079U - Power generation system for coupling aluminum combustion and hydrogen fuel cell - Google Patents
Power generation system for coupling aluminum combustion and hydrogen fuel cell Download PDFInfo
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- CN215403079U CN215403079U CN202120343819.3U CN202120343819U CN215403079U CN 215403079 U CN215403079 U CN 215403079U CN 202120343819 U CN202120343819 U CN 202120343819U CN 215403079 U CN215403079 U CN 215403079U
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- 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
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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
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
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Abstract
The utility model discloses a power generation system for coupling aluminum combustion and a hydrogen fuel cell, which comprises an aluminum combustion and hydrogen fuel cell power generation subsystem and an aluminum fuel electrolysis regeneration subsystem; the aluminum combustion and hydrogen fuel cell power generation subsystem comprises a powder preparation device (1), an aluminum water combustion device (2), a gas-solid separation device (3), a mixed working medium turbine (4), a power generator (5), a condenser (6) and a hydrogen fuel cell (7); the aluminum fuel is connected with a material inlet of the powder making device (1) through a conveying pipeline, an outlet of the powder making device (1) is connected with a fuel inlet of the aluminum water combustion device (2), and an oxidant inlet of the aluminum water combustion device (2) is connected with an oxidant water conveying pipeline; the utility model effectively couples the aluminum fuel energy storage, the aluminum combustion power generation, the hydrogen fuel cell, the aluminum production by the alumina electrolysis and the like, and has the advantages of high energy storage density, long energy storage period, permanent storage, no consumption of fuel cycle regeneration, convenience for developing global energy trade and the like.
Description
Technical Field
The utility model belongs to the technical field of green power generation and advanced energy storage, and particularly relates to a power generation system for coupling aluminum combustion and a hydrogen fuel cell.
Background
With the global atmospheric pollution and climate warming trend becoming more severe, the traditional power generation system mainly using fossil energy will face unprecedented pressure and challenge. From a worldwide perspective, countries are striving to increase the proportion of renewable energy sources in their own power structures to generate electricity. In the future, the development trend in the world energy field is bound to be a gradual replacement of fossil energy by renewable energy. However, the renewable energy source seriously hinders the development of the renewable energy power generation due to the characteristics of intermittency, instability, uncertainty and the like of the renewable energy source. In the future, renewable energy sources are required to replace fossil energy sources, and development and support of large-scale and long-period energy storage technologies are required.
At present, research in the field of energy storage technology is active, and various energy storage technologies, such as pumped storage, compressed air storage, lithium battery storage, super capacitor storage, flywheel storage, hydrogen storage, etc., are rapidly developed. However, the existing energy storage technology has difficulty in meeting the requirements of high energy storage density, mobility, low self-consumption loss and global energy trade at the same time. Therefore, there is a need to develop a new energy storage technology, so that renewable energy power generation is developed to a deeper and wider direction worldwide.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provides a power generation system for coupling aluminum combustion and a hydrogen fuel cell, which effectively couples aluminum fuel energy storage, aluminum combustion power generation, a hydrogen fuel cell, aluminum oxide electrolysis aluminum production and the like and has the advantages of high energy storage density, long energy storage period, capability of realizing permanent storage, no consumption of fuel cycle regeneration, convenience in developing global energy trade and the like.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a power generation system for coupling aluminum combustion and a hydrogen fuel cell comprises an aluminum combustion and hydrogen fuel cell power generation subsystem and an aluminum fuel electrolysis regeneration subsystem;
the aluminum combustion and hydrogen fuel cell power generation subsystem comprises a powder preparation device 1, an aluminum water combustion device 2, a gas-solid separation device 3, a mixed working medium turbine 4, a power generator 5, a condenser 6 and a hydrogen fuel cell 7; the aluminum fuel is connected with the material inlet of the powder making device 1 through the conveying pipeline, the outlet of the powder making device 1 is connected with the fuel inlet of the aluminum water combustion device 2, the oxidant inlet of the aluminum water combustion device 2 is connected with the oxidant water conveying pipeline, in the aluminum water combustion device 2, aluminum powder and water are subjected to violent combustion reaction, and the reaction equation is 2Al +3H2O＝Al2O3+3H2The oxidant water is excessive in the reaction process, and the reaction product is solid Al2O3Steam and hydrogen; the outlet of the aluminum water combustion device 2 is communicated with the inlet of the gas-solid separation device 3, after the gas-solid separation is completed, the mixed gas of steam and hydrogen is communicated with the inlet of the mixed working medium turbine 4 through the gas outlet of the gas-solid separation device 3, the mixed gas with high temperature and high pressure expands in the mixed working medium turbine 4 to do work and drives the generator 5 to rotate to generate power, the generator 5 is coaxially connected with the mixed working medium turbine 4, and solid Al is coaxially connected with the mixed working medium turbine 42O3Collecting the solid materials through a solid material outlet of the gas-solid separation device 3; the working medium outlet of the mixed working medium turbine 4 is connected with the gas inlet of the condenser 6, and the water vapor in the mixed working mediumThe gas is separated from the hydrogen after being condensed, a gas outlet of the condenser 6 is connected with a hydrogen inlet of the hydrogen fuel cell 7, and the hydrogen generates electrochemical reaction in the hydrogen fuel cell 7 to provide electric energy to the outside;
the aluminum fuel electrolysis regeneration subsystem comprises a transportation device 8 and an aluminum oxide electrolysis device 9; solid Al generated by combustion reaction of aluminum and water2O3Transported to an industrial electrolytic aluminum plant by a transportation device 8, and solid Al2O3The device is connected with an alumina material inlet of an alumina electrolysis device 9, the other material inlet of the alumina electrolysis device 9 is connected with a flux cryolite conveying pipeline, a power supply of the alumina electrolysis device 9 is connected with a surplus renewable energy power supply 10 in a power grid, the alumina generates electrolytic reaction in the alumina electrolysis device 9, and fuel aluminum is regenerated on a cathode of the alumina electrolysis device 9.
The mass ratio of steam to hydrogen in the inlet working medium of the mixed working medium turbine 4 is (20-45): 1.
the surplus renewable energy power supply 10 in the grid is electricity generated by renewable energy sources that is difficult to utilize in the grid.
According to the working method of the power generation system of the coupled aluminum combustion and hydrogen fuel cell, aluminum oxide is used as a raw material of the power generation system, when the power generation of renewable energy sources in a power grid system is excessive or surplus, the molten aluminum oxide is electrolyzed by the aluminum oxide electrolysis device 9, and the electricity of the renewable energy sources is converted into the chemical energy of aluminum fuel through electrochemical reaction and stored; when the power generation of renewable energy sources in a power grid system is insufficient or other geographical positions in the world need power supply, the chemical energy of the aluminum fuel is converted into electric energy through the aluminum combustion and hydrogen fuel cell power generation subsystem, and the power supply is realized; the specific process of converting chemical energy into electric energy is as follows: the aluminum fuel and the water are subjected to violent combustion reaction in the aluminum water combustion device 2, and the reaction product is solid Al2O3The high-temperature high-pressure steam and hydrogen mixed gas expands in the mixed working medium turbine 4 to do work and drives the generator 5 to rotate to generate electricity; in addition, the water vapor in the mixed working medium is condensed in the condenser 6 and then is mixed with the hydrogenThe hydrogen gas is separated and then electrochemically reacted in the hydrogen fuel cell 7 to supply electric energy to the outside. Solid Al after combustion of aluminum2O3The fuel aluminum can be recovered by the electrolytic regeneration device after being recovered, thereby realizing the recycling, and the alumina is not consumed in the whole process.
The utility model has the beneficial effects that:
the power generation system coupling the aluminum combustion and the hydrogen fuel cell and the working method thereof have the following advantages that: (1) the energy density of the metal fuel aluminum is high; (2) the aluminum fuel does not contain carbon, and pollutants are not generated in the whole working process of the system, so that the system is a green low-carbon power generation technology; (3) renewable energy power is converted into chemical energy of metal fuel aluminum for storage through electrochemical reaction, and the method has the advantages of long energy storage period and capability of realizing permanent storage; (4) after the combustion reaction of the aluminum fuel in the whole process, the combustion product can be regenerated by electrolysis to obtain the metal fuel aluminum, and the fuel aluminum is regenerated circularly and has no consumption in the whole process; (5) the energy is stored through the metal fuel aluminum, so that the energy trade in the global range is conveniently developed.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Wherein, 1 is a powder making device, 2 is an aluminum water combustion device, 3 is a gas-solid separation device, 4 is a mixed working medium turbine, 5 is a generator, 6 is a condenser, 7 is a hydrogen fuel cell, 8 is a transportation device, 9 is an aluminum oxide electrolysis device, and 10 is surplus renewable energy power supply in a power grid.
Detailed Description
The utility model is described in further detail below with reference to the accompanying drawings:
referring to fig. 1, a power generation system coupling an aluminum combustion and hydrogen fuel cell includes an aluminum combustion and hydrogen fuel cell power generation subsystem and an aluminum fuel electrolysis regeneration subsystem;
the aluminum combustion and hydrogen fuel cell power generation subsystem comprises a powder preparation device 1, an aluminum water combustion device 2, a gas-solid separation device 3, a mixed working medium turbine 4, a power generator 5, a condenser 6 and a hydrogen fuel cell 7; aluminum fuel passes through conveying pipeline and powder process deviceThe material inlet of the powder making device 1 is connected, the outlet of the powder making device 1 is connected with the fuel inlet of the aluminum water combustion device 2, the oxidant inlet of the aluminum water combustion device 2 is connected with the oxidant water conveying pipeline, in the aluminum water combustion device 2, aluminum powder and water generate violent combustion reaction, and the reaction equation is 2Al +3H2O＝Al2O3+3H2The oxidant water is excessive in the reaction process, and the reaction product is solid Al2O3Steam and hydrogen; the outlet of the aluminum water combustion device 2 is communicated with the inlet of the gas-solid separation device 3, after the gas-solid separation is completed, the mixed gas of steam and hydrogen is communicated with the inlet of the mixed working medium turbine 4 through the gas outlet of the gas-solid separation device 3, the mixed gas with high temperature and high pressure expands in the mixed working medium turbine 4 to do work and drives the generator 5 to rotate to generate power, the generator 5 is coaxially connected with the mixed working medium turbine 4, and solid Al is coaxially connected with the mixed working medium turbine 42O3Collecting the solid materials through a solid material outlet of the gas-solid separation device 3; a working medium outlet of the mixed working medium turbine 4 is connected with a gas inlet of the condenser 6, water vapor in the mixed working medium is separated from hydrogen after being condensed, a gas outlet of the condenser 6 is connected with a hydrogen inlet of the hydrogen fuel cell 7, and the hydrogen generates electrochemical reaction in the hydrogen fuel cell 7 to provide electric energy outwards;
the aluminum fuel electrolysis regeneration subsystem comprises a transportation device 8 and an aluminum oxide electrolysis device 9; solid Al generated by combustion reaction of aluminum and water2O3Transported to an industrial electrolytic aluminum plant by a transportation device 8, and solid Al2O3The device is connected with an alumina material inlet of an alumina electrolysis device 9, the other material inlet of the alumina electrolysis device 9 is connected with a flux cryolite conveying pipeline, a power supply of the alumina electrolysis device 9 is connected with a surplus renewable energy power supply 10 in a power grid, the alumina generates electrolytic reaction in the alumina electrolysis device 9, and fuel aluminum is regenerated on a cathode of the alumina electrolysis device 9.
The power generation system of the utility model coupling aluminum combustion and hydrogen fuel cell takes alumina as raw material, when the renewable energy in the power grid system generates excessive or surplus power, the fused alumina is electrolyzed by the alumina electrolysis device 9, and the aluminum oxide is used for electrolyzing the fused aluminaRenewable energy electricity is stored by converting chemical energy of aluminum fuel through electrochemical reaction. When the power generation of renewable energy sources in a power grid system is insufficient or other geographical positions in the world need power supply, the chemical energy of the aluminum fuel is converted into electric energy through the aluminum combustion and hydrogen fuel cell power generation subsystem, and the power supply is realized; the specific process of converting chemical energy into electric energy is as follows: the aluminum fuel and the water are subjected to violent combustion reaction in the aluminum water combustion device 2, and the reaction product is solid Al2O3The high-temperature high-pressure steam and hydrogen mixed gas expands in the mixed working medium turbine 4 to do work and drives the generator 5 to rotate to generate electricity; in addition, the water vapor in the mixed working medium is separated from the hydrogen after being condensed in the condenser 6, and then the hydrogen generates electrochemical reaction in the hydrogen fuel cell 7 to provide electric energy for the outside. Solid Al after combustion of aluminum2O3The fuel aluminum can be recovered by the electrolytic regeneration device after being recovered, thereby realizing the recycling, and the alumina is not consumed in the whole process.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A power generation system coupling an aluminum combustion and a hydrogen fuel cell, characterized by: comprises an aluminum combustion and hydrogen fuel cell power generation subsystem and an aluminum fuel electrolysis regeneration subsystem;
the aluminum combustion and hydrogen fuel cell power generation subsystem comprises a powder preparation device (1), an aluminum water combustion device (2), a gas-solid separation device (3), a mixed working medium turbine (4), a power generator (5), a condenser (6) and a hydrogen fuel cell (7); the aluminum fuel is connected with the material inlet of the powder making device (1) through a conveying pipeline, the outlet of the powder making device (1) is connected with the fuel inlet of the aluminum water combustion device (2), and the oxidant inlet of the aluminum water combustion device (2) is connected with the fuel inlet of the aluminum water combustion device (2)The oxidant water delivery pipeline is connected, in the aluminum water combustion device (2), aluminum powder and water are subjected to violent combustion reaction, the oxidant water is excessive in the reaction process, and the reaction product is solid Al2O3Steam and hydrogen; the outlet of the aluminum water combustion device (2) is communicated with the inlet of the gas-solid separation device (3), after the gas-solid separation is completed, the mixed gas of steam and hydrogen is communicated with the inlet of the mixed working medium turbine (4) through the gas outlet of the gas-solid separation device (3), the mixed gas with high temperature and high pressure expands in the mixed working medium turbine (4) to do work and drives the generator (5) to rotate to generate power, the generator (5) is coaxially connected with the mixed working medium turbine (4), and solid Al is solid2O3The solid materials are collected through a solid material outlet of the gas-solid separation device (3); a working medium outlet of the mixed working medium turbine (4) is connected with a gas inlet of the condenser (6), water vapor in the mixed working medium is separated from hydrogen after being condensed, a gas outlet of the condenser (6) is connected with a hydrogen inlet of the hydrogen fuel cell (7), and the hydrogen generates electrochemical reaction in the hydrogen fuel cell (7) to provide electric energy to the outside;
the aluminum fuel electrolysis regeneration subsystem comprises a transportation device (8) and an aluminum oxide electrolysis device (9); solid Al generated by combustion reaction of aluminum and water2O3Transported to an industrial electrolytic aluminium plant by a transport device (8) and solid Al2O3The device is connected with an alumina material inlet of an alumina electrolysis device (9), the other material inlet of the alumina electrolysis device (9) is connected with a flux cryolite conveying pipeline, a power supply of the alumina electrolysis device (9) is connected with a surplus renewable energy power supply (10) in a power grid, the alumina generates electrolytic reaction in the alumina electrolysis device (9), and fuel aluminum is regenerated on a cathode of the alumina electrolysis device (9).
2. A power generation system coupling an aluminum combustion and hydrogen fuel cell according to claim 1, wherein: the surplus renewable energy power supply (10) in the grid is electricity generated by renewable energy sources that is difficult to utilize in the grid.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113023671A (en) * | 2021-02-07 | 2021-06-25 | 西安热工研究院有限公司 | Power generation system for coupling aluminum combustion and hydrogen fuel cell and working method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113023671A (en) * | 2021-02-07 | 2021-06-25 | 西安热工研究院有限公司 | Power generation system for coupling aluminum combustion and hydrogen fuel cell and working method thereof |
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