阅读说明：本技术 一种太阳能光催化制氢燃料电池发电系统 (Solar photocatalytic hydrogen production fuel cell power generation system ) 是由 王亚瑟 冉鹏 陈宇彤 于 2020-08-07 设计创作，主要内容包括：一种太阳能制氢发电技术,特别涉及一种太阳能光催化制氢燃料电池发电系统,属于可再生能源发电技术领域。其特征在于将大量氩气通入光催化制氢反应器中,降低生成物中氢气的浓度,在接下来的加热和分离过程中有效防止氢气爆炸,提高系统安全性；使用燃气轮机排气余热利用装置加热全氟化碳基液体渗透膜,将其维持在90℃左右以保持良好的选择性和渗透性；系统内生成的高纯度的氢气、氧气作为燃料电池的燃料与氧化剂,实现氢能的化学能至电能的直接转化,燃料电池的排气余热进一步通过燃气轮机利用,实现氢能的存储与综合再利用。本系统具有安全性高、绿色环保等优点。(A solar hydrogen production power generation technology, in particular to a solar photocatalytic hydrogen production fuel cell power generation system, which belongs to the technical field of renewable energy power generation. The method is characterized in that a large amount of argon is introduced into the photocatalytic hydrogen production reactor, so that the concentration of hydrogen in a product is reduced, hydrogen explosion is effectively prevented in the subsequent heating and separation processes, and the system safety is improved; heating a perfluorocarbon-based liquid permeable membrane by using a gas turbine exhaust waste heat utilization device, and maintaining the perfluorocarbon-based liquid permeable membrane at about 90 ℃ to keep good selectivity and permeability; high-purity hydrogen and oxygen generated in the system are used as fuel and oxidant of the fuel cell to realize direct conversion from chemical energy of hydrogen energy to electric energy, and exhaust waste heat of the fuel cell is further utilized by the gas turbine to realize storage and comprehensive reutilization of the hydrogen energy. The system has the advantages of high safety, environmental protection and the like.)

1. A solar photocatalytic hydrogen production fuel cell power generation system is characterized by comprising the following devices: the device comprises a water tank (1), a circulating pump (2), a photocatalytic hydrogen production reactor (3), a solar heat utilization device (4), a drying device (5), a molecular membrane type gas separator (6), a liquid selective permeable membrane type gas separator (7) with a heating device, an argon compression pump (8), an argon tank (9), an oxygen compression pump (10), an oxygen tank (11), a hydrogen compression pump (12), a hydrogen tank (13), a groove-shaped paraboloid condenser (14), a fuel cell (15), a combustion chamber (16), a gas turbine power generation system (17) and corresponding connecting pipelines and valves;

an outlet of the water tank (1) is connected with a water inlet of a circulating pump (2) through a pipeline and a valve, an outlet of the circulating pump (2) is connected with a bottom inlet of the photocatalytic hydrogen production reactor (3) through a pipeline and a valve, and an argon inlet of the photocatalytic hydrogen production reactor (3) is connected with an outlet of an argon tank (9) through a pipeline; the groove-shaped parabolic condenser (14) reflects sunlight to the light receiving surface of the photocatalytic hydrogen production reactor (3), and the outlet of the photocatalytic hydrogen production reactor (3) is connected with the inlet of the drying device (5) through a pipeline and a valve; the outlet of the drying device (5) is connected with the inlet of the molecular membrane type gas separator (6) through a pipeline and a valve; an outlet (6b) at the upper end of the molecular membrane type gas separator is connected with an inlet of a hydrogen compression pump (12) through a pipeline and a valve; the outlet of the hydrogen compression pump (12) is connected with the inlet of the hydrogen tank (13) through a pipeline and a valve; an outlet (6a) at the lower end of the molecular membrane type gas separator is connected with a gas inlet of a liquid selective permeable membrane type gas separator (7) with a heating device through a pipeline and a valve; an outlet (7b) at the upper end of the liquid selective permeable membrane type gas separator with the heating device is connected with an inlet of an argon compression pump (8) through a pipeline and a valve; the gas turbine exhaust waste heat utilization device (4) is connected with a heater (7c) of a liquid selective permeable membrane type gas separator with a heating device through a pipeline and a valve; the outlet of the argon compression pump (8) is connected with the inlet of an argon tank (9) through a pipeline and a valve; an outlet (7a) at the lower end of the gas of the liquid selective permeable membrane type gas separator with the heating device is connected with an inlet of an oxygen compression pump (10) through a pipeline, and an outlet of the oxygen compression pump (10) is connected with an inlet of an oxygen tank (11) through a pipeline and a valve; the outlet of the hydrogen tank (13) is connected with the anode inlet of the fuel cell (15) through a valve and a pipeline, and the outlet of the oxygen tank (11) is connected with the cathode inlet of the fuel cell (15) through a valve and a pipeline; an anode outlet and a cathode outlet of the fuel cell (15) are respectively connected with a fuel inlet and an oxidant inlet of the combustion chamber (16) through pipelines; the gas outlet of the combustion chamber (16) is connected with the gas inlet of the gas turbine power generation system (17) through a pipeline; and a gas exhaust port of the gas turbine power generation system (17) is connected with a gas inlet of the gas turbine exhaust waste heat utilization device (4) through a pipeline.

2. The solar photocatalytic hydrogen production fuel cell power generation system according to claim 1 is characterized by being operated in the following manner: water in the water tank (1) is driven by a circulating pump (2) to enter the photocatalytic hydrogen production reactor (3), and a groove-shaped parabolic condenser (14) maintains the temperature of the whole photocatalytic hydrogen production reactor (3) at about 50 ℃; water in the photocatalytic hydrogen production reactor (3) absorbs sunlight with corresponding wavelength, and the catalyst excites the water to generate a mixture of hydrogen and oxygen; meanwhile, an outlet valve of the argon tank (9) is opened, argon in the argon tank (9) enters the photocatalytic hydrogen production reactor (3), and the content of hydrogen in the mixed gas in the photocatalytic hydrogen production reactor (3) is reduced to be below 4%; conveying the mixed gas of argon, hydrogen, oxygen and water vapor in the photocatalytic hydrogen production reactor (3) to a drying device (5) through a pipeline to remove the water vapor in the mixed gas; the dried mixed gas firstly enters a molecular membrane type gas separator (6), hydrogen is separated through a molecular sieve membrane of the molecular membrane type gas separator (6) and is discharged from an outlet (6b) at the upper end of the molecular membrane type gas separator, and the discharged hydrogen is compressed by a hydrogen compression pump (12) and enters a hydrogen tank (13) for storage; the other side of the molecular sieve membrane of the molecular membrane type gas separator (6) separates the mixed gas of argon and oxygen, and the mixed gas is discharged through an outlet (6a) at the lower end of the molecular membrane type gas separator; the mixed gas of oxygen and argon enters a liquid selective permeable membrane type gas separator (7) with a heating device; in order to ensure the permeation efficiency of the liquid selective permeation membrane type gas separator (7), a fluorocarbon-based liquid permeation membrane in the liquid selective permeation membrane type gas separator (7) needs to be maintained at about 90 ℃, and the energy of the fluorocarbon-based liquid permeation membrane comes from the exhaust waste heat utilization device (4) of the gas turbine; then, the mixed gas of oxygen and argon is separated under the action of a fluorocarbon-based liquid permeable membrane in the liquid selective permeable membrane type gas separator (7), and the separated oxygen is discharged from an outlet (7a) at the lower end of the liquid selective permeable membrane type gas separator with a heating device and enters an oxygen tank (11) for storage through an oxygen compression pump (10); argon separated from an outlet (7b) at the upper end of the liquid selective permeable membrane type gas separator with the heating device is compressed by an argon compression pump (8) and then returns to an argon tank (9);

when electric energy is required, an outlet valve of a hydrogen tank (13) and an outlet valve of an oxygen tank (11) are respectively opened, so that hydrogen and oxygen respectively enter an anode and a cathode of a fuel cell (15), and the fuel cell (15) consumes part of the hydrogen and the oxygen to generate direct current; the tail gas discharged by the fuel cell (15) still contains partial hydrogen and oxygen, then enters a combustion chamber (16) for full combustion, and high-temperature flue gas generated after combustion enters a gas turbine power generation system (17) to drive the gas turbine power generation system (17) to do work to generate alternating current; the exhaust gas of the gas turbine power generation system (17) enters the gas turbine exhaust gas waste heat utilization device (4) for heat exchange and then is exhausted into the atmosphere;

the heat exchanger (4a) of the gas turbine exhaust waste heat utilization device absorbs exhaust waste heat of a gas turbine power generation system (17), heats circulating water to 90-100 ℃ and stores the circulating water into a heat storage water tank (4b) of the gas turbine exhaust waste heat utilization device, and then hot water stored in the heat storage water tank (4b) of the gas turbine exhaust waste heat utilization device is introduced into a heater (7c) of a liquid selective permeable membrane type gas separator with a heating device, so that the high-efficiency operation of the liquid selective permeable membrane type gas separator (7) is ensured; the molecular sieve membrane of the molecular membrane type gas separator (6) has strong hygroscopicity, and in order to avoid influencing the separation performance of the membrane, a drying device is used for drying water vapor and water vapor in gas before mixed gas is introduced into the separator.

3. The solar photocatalytic hydrogen production system for safely separating hydrogen according to claim 2, characterized in that: the inlet of the photocatalytic hydrogen production reactor (3) is connected with the outlet of the argon tank (9) through a pipeline, a large amount of argon is directly doped into the mixed gas of hydrogen and oxygen, the concentration of the hydrogen is reduced to be below 4%, hydrogen explosion is effectively prevented in the following processes of hydrogen generation, heating and separation, and the safety of a system is improved; the solar photocatalytic hydrogen production fuel cell power generation system can realize high-purity safe separation of hydrogen and oxygen and respectively store the hydrogen and oxygen with a hydrogen tank and an oxygen tank; argon is separated by a liquid permselective membrane type gas separator (7) with a heating device and is stored in an argon tank (9), so that the recycling of the argon is realized.

4. The solar photocatalytic hydrogen production system for safely separating hydrogen according to claim 2, characterized in that: the solar heat utilization device (4) is connected with a heater of a liquid selective permeable membrane type gas separator (7) with a heating device through a pipeline, solar energy is utilized to heat the perfluorocarbon-based liquid permeable membrane, and the perfluorocarbon-based liquid permeable membrane is maintained at about 90 ℃ to keep a good permeation rate, the process fully utilizes solar energy, high-energy-consumption equipment such as an electric heater is avoided, and the system efficiency is improved.

Technical Field

The invention relates to a solar hydrogen production power generation technology, in particular to a solar photocatalytic hydrogen production fuel cell power generation system, and belongs to the technical field of renewable energy power generation.

Background

With global environmental pollution and the increase in greenhouse effect, hydrogen energy has been spotlighted as an energy source having a high calorific value and a clean combustion product. A large number of hydrogen production technologies have been studied and developed, and among them, the photocatalytic hydrogen production technology has been receiving much attention because it can store and utilize solar energy.

The solar photocatalytic hydrogen production technology is a pollution-free production technology capable of realizing hydrogen energy, has a wide application range and is a solar hydrogen production technology in the prior art. The fuel cell is a device for directly converting chemical energy into electric energy, and has the characteristics of high power density, high energy conversion rate, no pollution, low noise, capability of meeting different power requirements and the like. The organic coupling integration of the solar catalytic hydrogen production technology and the fuel cell can effectively improve the utilization rate of renewable energy sources and realize the efficient utilization of the renewable energy sources.

Disclosure of Invention

The invention designs a solar photocatalytic hydrogen production fuel cell power generation system by combining the advantages of a solar photocatalytic hydrogen production technology and the advantages of a fuel cell. According to the system, the inert gas argon is doped into the newly generated hydrogen and oxygen mixed gas as the protective gas, so that the concentration of the hydrogen is far away from the explosion limit, then the mixed gas is sequentially and safely separated, and the fuel cell and the gas turbine system are utilized for power generation, so that the safety of the photocatalytic hydrogen production system is improved, the efficient utilization of solar energy is realized, and the system is safe, efficient, green and environment-friendly.

In order to achieve the purpose, the invention provides the following technical scheme.

A solar photocatalytic hydrogen production fuel cell power generation system comprises a water tank, a circulating pump, a photocatalytic hydrogen production reactor, a gas turbine exhaust waste heat utilization device, a drying device, a molecular membrane type gas separator, a liquid selective permeable membrane type gas separator with a heating device, a compression pump, an argon tank, a hydrogen tank, an oxygen tank, a groove-shaped parabolic condenser, a fuel cell, a combustion chamber, a gas turbine power generation system, and related connecting pipelines and valves.

Wherein, the outlet of the water tank is connected with the circulating pump and the inlet at the bottom of the photocatalytic hydrogen production reactor through pipelines and valves, and the argon inlet of the photocatalytic hydrogen production reactor is connected with the outlet of the argon tank through pipelines and valves. The groove-shaped parabolic condenser absorbs and reflects sunlight to the light receiving surface of the photocatalytic hydrogen production reactor. The outlet of the photocatalytic hydrogen production reactor is connected with the inlet of the drying device through a pipeline and a valve. The outlet of the drying device is connected with the inlet of the molecular membrane type gas separator through a pipeline and a valve, the outlet at the upper end of the molecular membrane type gas separator is connected with the inlet of the hydrogen compression pump and the hydrogen tank through a pipeline and a valve, and the outlet at the lower end of the molecular membrane type gas separator is connected with the gas inlet of the liquid selective permeable membrane type gas separator with the heating device through a pipeline and a valve. The outlet at the upper end of the gas of the liquid selective permeable membrane type gas separator with the heating device is connected with the argon compression pump and the inlet of the argon tank through pipelines, and the outlet at the lower end of the liquid selective permeable membrane type gas separator with the heating device is connected with the oxygen compression pump and the inlet of the oxygen tank through pipelines and valves. The outlet of the hydrogen tank is connected with the anode inlet of the fuel cell through a valve and a pipeline, and the outlet of the oxygen tank is connected with the cathode inlet of the fuel cell through a valve and a pipeline; an anode outlet and a cathode outlet of the fuel cell are respectively connected with a fuel inlet and an oxidant inlet of the combustion chamber through pipelines; the gas outlet of the combustion chamber is connected with the gas inlet of the gas turbine power generation system through a pipeline; and a gas exhaust port of the gas turbine power generation system is connected with a gas inlet of the gas turbine exhaust waste heat utilization device through a pipeline.

Preferably, the argon is released and directly filled into the photocatalytic hydrogen production reactor by opening an outlet valve of the argon tank, so that the inner space of the photocatalytic hydrogen production reactor is filled with the argon, the hydrogen and oxygen concentrations in the inner space of the photocatalytic hydrogen production reactor are reduced, hydrogen explosion is effectively prevented in the subsequent heating and separation processes, and the system safety is improved.

Preferably, the gas turbine exhaust gas waste heat utilization device is connected with a heater of a liquid permselective membrane gas separator with a heating device through a pipeline, and the perfluorocarbon-based liquid permeable membrane is heated by the gas turbine exhaust gas waste heat and is maintained at about 90 ℃ so as to keep a good permeation rate. And a liquid selective permeable membrane type gas separator with a heating device is used for separating argon gas, so that the cyclic utilization of the argon gas is realized.

Preferably, hydrogen and oxygen separated by the solar photocatalytic hydrogen production fuel cell power generation system are respectively stored in a hydrogen tank and an oxygen tank, high-purity hydrogen and oxygen are used as fuel and oxidant of the fuel cell to realize direct conversion from chemical energy of hydrogen energy to electric energy, and exhaust gas of the fuel cell is further utilized by a gas turbine to realize storage and comprehensive reutilization of hydrogen energy.

The invention has the advantages and prominent technical effects that: argon is directly filled into a photocatalytic hydrogen production reactor, so that a large amount of argon is doped into the generated mixed gas of hydrogen and oxygen, the concentration of the hydrogen before separation is maintained below 4%, explosion is effectively prevented, and the safety of a system is improved; secondly, the liquid permselective membrane is heated by utilizing the exhaust waste heat utilization device of the gas turbine, high energy consumption devices such as an electric heater are avoided, and the system efficiency is improved; argon is separated and recycled, the system integrity is high, and the economy is effectively improved; and the solar photocatalytic hydrogen production fuel cell power generation system has the functions of integrated hydrogen production, storage and power generation, and has the characteristics of multifunction, high efficiency and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic diagram of a solar photocatalytic hydrogen production fuel cell power generation system of the present invention.

FIG. 2 is a schematic diagram of a gas turbine exhaust gas waste heat utilization device.

FIG. 3 is a schematic diagram of a liquid permselective membrane gas separator with heating means.

The list of labels in the figure is: 1-a water tank; 2-a circulating pump; 3-photocatalytic hydrogen production reactor; 4, a gas turbine exhaust waste heat utilization device; 4 a-a heat exchanger of the gas turbine exhaust gas waste heat utilization device; 4b, a heat storage water tank of the gas turbine exhaust waste heat utilization device; 5-a drying device; 6-molecular membrane gas separator; 6 a-a lower end outlet of the molecular membrane type gas separator; 6 b-an outlet at the upper end of the molecular membrane type gas separator; 7-a liquid permselective membrane gas separator with a heating device; 7 a-a lower outlet of the liquid selective permeable membrane type gas separator with a heating device; 7 b-an upper end outlet of the liquid selective permeable membrane type gas separator with a heating device; 7 c-a heater of a liquid permselective membrane gas separator with a heating device; 8-argon gas compression pump; 9-argon tank; 10-an oxygen compression pump; 11-an oxygen tank; 12-a hydrogen gas compression pump; 13-a hydrogen tank; 14-trough parabolic concentrator; 15-a fuel cell; 16-a combustion chamber; 17-gas turbine power generation system.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1, the system of the invention comprises a water tank 1, a circulating pump 2, a photocatalytic hydrogen production reactor 3, a gas turbine exhaust waste heat utilization device 4, a drying device 5, a molecular membrane type gas separator 6, a liquid selective permeable membrane type gas separator 7 with a heating device, an argon compression pump 8, an argon tank 9, an oxygen compression pump 10, an oxygen tank 11, a hydrogen compression pump 12, a hydrogen tank 13, a trough-shaped parabolic condenser 14, a fuel cell 15, a combustion chamber 16, a gas turbine power generation system 17, and corresponding connecting pipelines and valves.

As shown in fig. 1, the molecular membrane type gas separator 6 includes a lower outlet 6a and an upper outlet 6b, and a molecular sieve membrane is disposed inside the molecular membrane, and the molecular sieve membrane can screen and purify hydrogen according to the difference of the sizes of hydrogen molecules, oxygen molecules and argon molecules.

As shown in fig. 2, the gas turbine exhaust gas waste heat utilization device 4 includes a heat exchanger 4a of the gas turbine exhaust gas waste heat utilization device and a hot water storage tank 4b of the gas turbine exhaust gas waste heat utilization device.

As shown in fig. 3, the liquid permselective membrane gas separator with heating device 7 includes a lower outlet 7a, an upper outlet 7b, a heater 7c, and a perfluorocarbon-based liquid permeable membrane disposed therein for separating oxygen and argon.

As shown in fig. 1, the system of the present invention is connected as follows.

An outlet of the water tank 1 is connected with a water inlet of a circulating pump 2 through a pipeline and a valve, an outlet of the circulating pump 2 is connected with a bottom inlet of a photocatalytic hydrogen production reactor 3 through a pipeline and a valve, and an argon inlet of the photocatalytic hydrogen production reactor 3 is connected with an outlet of an argon tank 9 through a pipeline and a valve; the groove-shaped parabolic condenser 14 reflects sunlight to the light receiving surface of the photocatalytic hydrogen production reactor 3, and the outlet of the photocatalytic hydrogen production reactor 3 is connected with the inlet of the drying device 5 through a pipeline and a valve; the outlet of the drying device 5 is connected with the inlet of the molecular membrane type gas separator 6 through a pipeline and a valve; an outlet 6b at the upper end of the molecular membrane type gas separator is connected with an inlet of a hydrogen compression pump 12 through a pipeline and a valve; the outlet of the hydrogen compression pump 12 is connected with the inlet of the hydrogen tank 13 through a pipeline and a valve; the outlet 6a at the lower end of the molecular membrane type gas separator is connected with the gas inlet of a liquid selective permeation membrane type gas separator 7 with a heating device through a pipeline and a valve. An outlet 7b at the upper end of the liquid selective permeable membrane type gas separator with the heating device is connected with an inlet of an argon compression pump 8 through a pipeline and a valve; the gas turbine exhaust waste heat utilization device 4 is connected with a heater 7c of a liquid selective permeable membrane type gas separator with a heating device through a pipeline and a valve. The outlet of the argon compression pump 8 is connected with the inlet of the argon tank 9 through a pipeline and a valve. The gas lower end outlet 7a of the liquid selective permeable membrane type gas separator with the heating device is connected with the inlet of an oxygen compression pump 10 through a pipeline, and the outlet of the oxygen compression pump 10 is connected with the inlet of an oxygen tank 11 through a pipeline and a valve. The outlet of the hydrogen tank 13 is connected with the anode inlet of the fuel cell 15 through a valve and a pipeline, and the outlet of the oxygen tank 11 is connected with the cathode inlet of the fuel cell 15 through a valve and a pipeline; an anode outlet and a cathode outlet of the fuel cell 15 are respectively connected with a fuel inlet and an oxidant inlet of the combustion chamber 16 through pipelines; the gas outlet of the combustion chamber 16 is connected with the gas inlet of the gas turbine power generation system 17 through a pipeline; and a gas exhaust port of the gas turbine power generation system 17 is connected with a gas inlet of the gas turbine exhaust waste heat utilization device 4 through a pipeline.

The system operates as follows.

As shown in fig. 1, water in a water tank 1 is driven by a circulating pump 2 to enter a photocatalytic hydrogen production reactor 3, and a groove-shaped parabolic condenser 14 maintains the temperature of the whole photocatalytic hydrogen production reactor 3 at about 50 ℃; the water in the photocatalytic hydrogen production reactor 3 absorbs sunlight with corresponding wavelength, and the catalyst excites the water to generate a mixture of hydrogen and oxygen; meanwhile, an outlet valve of the argon tank 9 is opened, argon in the argon tank 9 enters the photocatalytic hydrogen production reactor 3, and the content of hydrogen in the mixed gas in the photocatalytic hydrogen production reactor 3 is reduced to be below 4%; conveying the mixed gas of argon, hydrogen, oxygen and water vapor in the photocatalytic hydrogen production reactor 3 to a drying device 5 through a pipeline to remove the water vapor in the mixed gas; the dried mixed gas enters a molecular membrane type gas separator 6, hydrogen is separated through a molecular sieve membrane of the molecular membrane type gas separator 6 and is discharged from an outlet 6b at the upper end of the molecular membrane type gas separator, and the discharged hydrogen is compressed by a hydrogen compression pump 12 and enters a hydrogen tank 13 for storage; the other side of the molecular sieve membrane of the molecular membrane type gas separator 6 separates the mixed gas of argon and oxygen, and the mixed gas is discharged through an outlet 6a at the lower end of the molecular membrane type gas separator; the oxygen and argon mixture then enters a liquid permselective membrane gas separator 7 with heating means. In order to ensure the permeation efficiency of the liquid permselective membrane gas separator 7, the fluorocarbon-based liquid permeable membrane inside the liquid permselective membrane gas separator 7 needs to be maintained at about 90 ℃, and the energy of the fluorocarbon-based liquid permeable membrane comes from the exhaust gas waste heat utilization device 4 of the gas turbine; then, the mixed gas of oxygen and argon is separated under the action of a fluorocarbon-based liquid permeable membrane in the liquid permselective membrane gas separator 7, and the separated oxygen is discharged from an outlet 7a at the lower end of the liquid permselective membrane gas separator with a heating device and enters an oxygen tank 11 through an oxygen compression pump 10 to be stored; argon gas separated from an outlet 7b at the upper end of the liquid permselective membrane gas separator with a heating device returns to an argon gas tank 9 after passing through an argon gas compression pump 8.

As shown in fig. 1, when there is a demand for electric energy, the outlet valve of the hydrogen tank 13 and the outlet valve of the oxygen tank 11 are opened respectively, so that hydrogen and oxygen enter the anode and the cathode of the fuel cell 15 respectively, and the fuel cell 15 consumes part of the hydrogen and the oxygen to generate direct current; the tail gas discharged by the fuel cell 15 still contains part of hydrogen and oxygen, then enters the combustion chamber 16 for full combustion, and high-temperature flue gas generated after combustion enters the gas turbine power generation system 17 to drive the gas turbine power generation system 17 to do work to generate alternating current; the exhaust gas of the gas turbine power generation system 17 enters the gas turbine exhaust gas waste heat utilization device 4 for heat exchange and then is exhausted into the atmosphere.

As shown in fig. 2, the heat exchanger 4a of the gas turbine exhaust gas waste heat utilization device absorbs the exhaust gas waste heat of the gas turbine power generation system 17, heats the circulating water to 90-100 ℃ and stores the circulating water into the heat storage water tank 4b of the gas turbine exhaust gas waste heat utilization device, and then the hot water stored in the heat storage water tank 4b of the gas turbine exhaust gas waste heat utilization device is introduced into the heater 7c of the liquid selective permeable membrane type gas separator with the heating device, so that the high-efficiency operation of the liquid selective permeable membrane type gas separator 7 is ensured. The molecular sieve membrane of the molecular membrane type gas separator 6 has strong hygroscopicity, and in order to avoid influencing the separation performance of the membrane, a drying device is used for drying water vapor and water vapor in gas before mixed gas is introduced into the separator.

The molecular membrane type gas separator 6 may be a molecular sieve membrane having a good separation performance for hydrogen, such as an SOD molecular sieve membrane.

The drying device can adopt drying agents such as calcium oxide, anhydrous calcium chloride and the like.

The fuel cell may employ a solid oxide fuel cell or a proton membrane fuel cell.

A solar photocatalytic hydrogen production fuel cell power generation system is characterized in that an argon inlet of a photocatalytic hydrogen production reactor 3 is connected with an argon tank 9 inlet through a pipeline, a large amount of argon is directly doped into a hydrogen and oxygen mixed gas, the concentration of the hydrogen is reduced to be below 4%, hydrogen explosion is effectively prevented in the following heating and separation processes, and the system safety is improved.

A solar photocatalytic hydrogen production fuel cell power generation system is characterized in that a gas turbine exhaust waste heat utilization device 4 is connected with a heater 7c of a liquid selective permeable membrane type gas separator with a heating device through a pipeline and a valve, a perfluorocarbon-based liquid permeable membrane is heated, and the perfluorocarbon-based liquid permeable membrane is maintained at about 90 ℃ to keep good selectivity and permeability. The solar energy and the waste heat generated in the system are fully utilized, high energy consumption equipment such as an electric heater is avoided, and the system efficiency is improved.

A solar photocatalytic hydrogen production fuel cell power generation system is characterized in that the solar photocatalytic hydrogen production fuel cell power generation system can realize high-purity separation of hydrogen and oxygen and respectively store the hydrogen and the oxygen in a hydrogen tank and an oxygen tank, the high-purity hydrogen and the high-purity oxygen are used as fuel and oxidant of a fuel cell to realize direct conversion from chemical energy of hydrogen energy to electric energy, and exhaust gas of the fuel cell is further utilized by a gas turbine to realize storage and comprehensive reutilization of the hydrogen energy.

Finally, the above embodiments are only used to help understand the method of the present invention and its core idea; also, for those skilled in the art, variations can be made in the specific embodiments and applications without departing from the spirit of the invention. In view of the above, the present disclosure should not be construed as limiting the invention.