Fuel cell integrated energy supply system

Abstract

The invention discloses a fuel cell integrated energy supply system, which comprises a reactor, a gas post-treatment device and a gas path distribution device, and the reactor comprises a fuel catalytic combustion reactor and a fuel catalytic reforming reactor. The gas path distribution device comprises a gas inlet gas path, a first gas outlet gas path and a second gas outlet gas path, the first gas outlet gas path and the second gas outlet gas path are connected with a gas outlet of the gas inlet gas path, and a gas outlet of the first gas outlet gas path and a gas outlet of the second gas outlet gas path are each provided with a connector used for being connected with a fuel cell; the gas post-treatment device is arranged on the second gas outlet path and is used for post-treating the product gas passing through the second gas outlet path, and a gas inlet of the gas inlet path is connected with a gas outlet of the fuel catalytic reforming reactor. The fuel cell integrated energy supply system can be used by various fuel cells, so that the universality of the fuel cell integrated energy supply system is improved. Raw materials of the fuel cell integrated energy supply system exchange heat with redundant heat in the system step by step, so that the energy utilization efficiency of the system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of fuel cells, and in particular to a fuel cell integrated energy supply system. Background Art

[0002] Hydrogen energy is one of the clean energy sources of the future, and fuel cells are one of the terminal products of hydrogen energy utilization, which are widely used in aerospace, transportation, distributed power stations and combined heat and power devices. Fuel cells can directly convert the chemical energy of fuel into electrical energy, and are a new type of efficient electrochemical power generation technology.

[0003] In traditional hydrogen production-coupled fuel cell power generation technology, a reactor of a fuel cell integrated energy supply system can only match one fuel cell, and it is impossible to achieve the application of a reactor reforming hydrogen production system matching multiple fuel cell types. This results in the need to replace the entire system equipment in different application scenarios, which significantly increases the cost and limits the application. Therefore, the versatility of the fuel cell integrated energy supply system is low.

[0004] Therefore, how to improve the versatility of the integrated fuel cell energy supply system is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0005] An object of the present invention is to provide a fuel cell integrated energy supply system, which has improved versatility.

[0006] The fuel cell integrated energy supply system provided in this application includes: Reactors, the reactors comprising a fuel catalytic combustion reactor and a fuel catalytic reforming reactor; Gas post-processing device; A gas path distribution device, the gas path distribution device includes an air inlet gas path, a first air outlet gas path and a second air outlet gas path, the first air outlet gas path and the second air outlet gas path are connected to the air outlet of the air inlet gas path, the air outlet of the first air outlet gas path and the air outlet of the second air outlet gas path are respectively provided with an interface for connecting to a fuel cell, the gas post-treatment device is arranged on the second air outlet gas path to post-treat the product gas passing through the second air outlet gas path, and the air inlet of the air inlet gas path is connected to the air outlet of the fuel catalytic reforming reactor.

[0007] Optionally, in the above-mentioned fuel cell integrated energy supply system, the gas post-processing device includes a gas purification device, the gas purification device is used for product gas purification, and the gas purification device is arranged in the second gas outlet gas path.

[0008] Optionally, the above-mentioned fuel cell integrated energy supply system also includes a third gas outlet gas circuit, the first gas outlet gas circuit, the second gas outlet gas circuit and the third gas outlet gas circuit are arranged in parallel, the gas inlet of the first gas outlet gas circuit is provided with a first control valve, the gas inlet of the second gas outlet gas circuit is provided with a second control valve, and the third gas outlet gas circuit is provided with a third control valve.

[0009] Optionally, in the above-mentioned fuel cell integrated energy supply system, it also includes a third heat exchanger, a water-gas shift reactor, a second heat exchanger and a gas-liquid separator which are sequentially arranged in the air inlet path along the fluid movement direction; A water conveying device is connected to the second heat exchanger, the third heat exchanger and the reactor through a first pipeline. The water in the water conveying device flows into the reactor after passing through the second heat exchanger and the third heat exchanger in sequence for heat exchange.

[0010] Optionally, the above-mentioned fuel cell integrated energy supply system also includes an integrated frame and running wheels installed at the bottom end of the integrated frame, and the reactor, the third heat exchanger, the water-gas shift reactor, the second heat exchanger, the gas-liquid separator and the water delivery device are all installed on the integrated frame.

[0011] Optionally, the above-mentioned fuel cell integrated energy supply system also includes a catalytic combustion exhaust gas collection device, and the fuel cells are provided with three, namely, a first fuel cell, a second fuel cell and a third fuel cell; the first fuel cell is connected to the outlet of the first gas outlet gas path, the second fuel cell is connected to the outlet of the third gas outlet gas path, and the third fuel cell is connected to the outlet of the second gas outlet gas path; the outlet of the first fuel cell, the outlet of the second fuel cell and the outlet of the third fuel cell are all connected to the air inlet of the fuel catalytic combustion reactor.

[0012] Optionally, the above-mentioned fuel cell integrated energy supply system further includes: a first heat exchanger connected to a catalytic combustion exhaust gas outlet of the reactor; A hydrocarbon raw material storage device, wherein the hydrocarbon raw material in the hydrocarbon raw material storage device exchanges heat with at least one of the first fuel cell, the second fuel cell and the third fuel cell through a second pipeline, and then exchanges heat with the first heat exchanger before entering the fuel catalytic reforming reactor.

[0013] Optionally, in the above-mentioned fuel cell integrated energy supply system, the gas purification device includes a PSA purification device and / or a membrane separation device.

[0014] Optionally, the above-mentioned fuel cell integrated energy supply system also includes a control module, and the reactor, the gas post-processing device and the gas path distribution device are all connected to the control module signal, and the control module controls the operation of the reactor and controls the opening and closing of the first gas outlet gas path, the second gas outlet gas path and the third gas outlet gas path.

[0015] Optionally, the above-mentioned fuel cell integrated energy supply system further includes a fourth control valve and a fifth control valve, wherein the fourth control valve controls the feed flow rate of the fuel catalytic reforming reactor, and the fifth control valve controls the feed flow rate of the fuel catalytic combustion reactor.

[0016] In the above technical scheme, the integrated fuel cell energy supply system provided by the present invention includes a reactor, a gas post-processing device and a gas path distribution device, and the reactor includes a fuel catalytic combustion reactor and a fuel catalytic reforming reactor. The gas path distribution device includes an air inlet path, a first air outlet path and a second air outlet path, the first air outlet path and the second air outlet path are connected to the air outlet of the air inlet path, the air outlet of the first air outlet path and the air outlet of the second air outlet path are respectively provided with interfaces for connecting to a fuel cell, the gas post-processing device is arranged on the second air outlet path to post-process the product gas passing through the second air outlet path, and the air inlet of the air inlet path is connected to the air outlet of the fuel catalytic reforming reactor.

[0017] It can be known from the above description that in the fuel cell integrated energy supply system provided in the present application, by setting a gas post-processing device, and setting the first gas outlet gas path and the second gas outlet gas path, when the fuel cell does not need to post-process the product gas, the fuel cell is connected to the first gas outlet gas path. When the fuel cell needs to post-process the product gas, the fuel cell is connected to the second gas outlet gas path. Therefore, the fuel cell integrated energy supply system provided in the present application can meet the use of a variety of fuel cells, thereby improving the versatility of the fuel cell integrated energy supply system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0019] Figure 1 A layout diagram of a fuel cell integrated energy supply system provided by an embodiment of the present invention; Figure 2 A cross-sectional view of a reactor provided by an embodiment of the present invention; Figure 3A specific working flow chart of a fuel cell integrated energy supply system provided by an embodiment of the present invention; Figure 4 A specific working flow chart of another fuel cell integrated energy supply system provided by an embodiment of the present invention; Figure 5 A layout diagram of another fuel cell integrated energy supply system provided by an embodiment of the present invention; Figure 6 A schematic diagram of the components of the product gas discharged from the reactor provided in an embodiment of the present invention; Figure 7 A schematic diagram of the components of the product gas after passing through the gas purification device provided in an embodiment of the present invention; Figure 8 This is a power generation time curve provided by an embodiment of the present invention.

[0020] in Figure 1-5 In: 1-reactor, 101-housing, 102-fuel catalytic combustion reactor, 103-fuel catalytic reforming reactor, 2-integrated frame, 3-gas distribution device, 4-gas purification device, 5-catalytic combustion raw material inlet, 6-heat exchange module, 7-water delivery device, 8-traveling wheel, 9-raw material delivery device, 10-air, 11-valve controller, 12-methanol flow regulator, 13-first fuel cell, 14-second fuel cell, 15-third fuel cell, 16-garbage pyrolysis gas flow regulator, 17-methanol water, 18-garbage pyrolysis gas raw material, 19-gas-liquid separator, 20-water-gas shift reactor, 21-second heat exchanger, 22-third heat exchanger, 23-first heat exchanger, 24-reforming raw material inlet, 25-hydrocarbon raw material storage device. DETAILED DESCRIPTION

[0021] The core of the present invention is to provide a fuel cell integrated energy supply system, which has improved versatility.

[0022] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and implementation modes.

[0023] Please refer to Figures 1 to 8 .

[0024] In a specific embodiment, the fuel cell integrated energy supply system provided by the specific embodiment of the present invention includes a reactor 1, a gas post-processing device and a gas path distribution device 3, and the reactor 1 includes a fuel catalytic combustion reactor 102 and a fuel catalytic reforming reactor 103. Specifically, the reactor 1 can be a traditional reactor, and the fuel catalytic combustion reactor 102 and the fuel catalytic reforming reactor 103 are both installed in the shell 101. In order to improve the heat exchange efficiency, a heat conducting medium is filled between the outer wall of the fuel catalytic combustion reactor 102 and the outer wall of the fuel catalytic reforming reactor in the shell 101.

[0025] The gas path distribution device 3 includes an inlet gas path, a first outlet gas path and a second outlet gas path, the first outlet gas path and the second outlet gas path are connected to the outlet of the inlet gas path, the outlet of the first outlet gas path and the outlet of the second outlet gas path are respectively provided with interfaces for connecting to a fuel cell, and a gas post-processing device is arranged in the second outlet gas path to post-process the product gas passing through the second outlet gas path, and the inlet of the inlet gas path is connected to the outlet of the fuel catalytic reforming reactor 103. The gas post-processing device is used to further process the product gas discharged from the reactor 1. Specifically, the gas post-processing device includes a gas purification device 4, which is used for product gas purification, and the gas purification device 4 is arranged in the second outlet gas path. The gas purification device can be a PSA purification device or a membrane separation device, and the PSA purification device is also called a pressure swing adsorption purification device. Specifically, the gas purification device can be composed of a pressure swing adsorption purification device and a membrane separation device connected in series.

[0026] When the reactor 1 is required to work, the fuel and air 10 of the catalytic combustion heating part are first introduced into the fuel catalytic combustion reactor 102 for autothermal combustion reaction to provide heat for the reactor 1; the fuel and water of the reforming raw materials are introduced into the fuel catalytic reforming reactor 103 for catalytic reforming reaction, and the outflowing reforming reaction gas, i.e., the product gas, can be used according to the needs of different types of fuel cells.

[0027] The fuel is divided into two parts: reforming raw material and catalytic combustion heating raw material, and the corresponding flow is controlled by the control valve according to the type of fuel cell. In a specific embodiment, the fuel cell integrated energy supply system also includes a fourth control valve and a fifth control valve, the fourth control valve controls the feed flow of the fuel catalytic reforming reactor 103, and the fifth control valve controls the feed flow of the fuel catalytic combustion reactor 102. The feed flow of the fuel catalytic reforming reactor 103 and the feed flow of the fuel catalytic combustion reactor 102 are controlled to match the connected fuel cell.

[0028] The volume of the fuel component is H 2 Content 4%~18%, CO content 10%~16%, CO 2 Content 4%~15%, CH 4 Content 14%~26% and C2 ~C 4 The content is 36% to 55%. The reforming medium is water vapor, air 10, oxygen or a mixture of at least two of the above three. The reforming raw material can be liquid hydrocarbon raw materials such as methanol water 17, ethanol water solution or garbage pyrolysis gas raw material 18.

[0029] Specifically, the fuel catalytic combustion reactor 102 is filled with a fuel self-heating catalyst, which is a precious metal-loaded alumina catalyst. The types of precious metals are Pt, Pd, and Rh, and the loading content is 0.1 wt% to 5wt%. The catalyst can undergo garbage pyrolysis catalytic combustion reaction at room temperature of 25°C.

[0030] The fuel catalytic reforming reactor 103 is filled with a fuel reforming catalyst, and the catalyst types are pyrochlore carrier-supported precious metal (Rh, Pt, Pd, etc.) catalyst and pyrochlore carrier-supported non-precious metal (Fe, Co, Ni, etc.) catalyst. The catalyst has an operating temperature of 160°C to 900°C, a diameter of 2 mm to 10 mm, and a length of 2 mm to 8 mm.

[0031] It can be known from the above description that in the fuel cell integrated energy supply system provided in the specific embodiment of the present application, by setting a gas post-processing device, and setting a first gas outlet gas path and a third gas outlet gas path, when the fuel cell does not need to post-process the product gas, the fuel cell is connected to the first gas outlet gas path. When the fuel cell needs to post-process the product gas, the fuel cell is connected to the second gas outlet gas path. Therefore, the fuel cell integrated energy supply system provided by the present application can meet the use of a variety of fuel cells, thereby improving the versatility of the fuel cell integrated energy supply system.

[0032] In a specific embodiment, the fuel cell integrated energy supply system further includes a third gas outlet path, the first gas outlet path, the second gas outlet path and the third gas outlet path are arranged in parallel, the gas inlet of the first gas outlet path is provided with a first control valve, the gas inlet of the second gas outlet path is provided with a second control valve, and the third gas outlet path is provided with a third control valve. The gas outlet of the first gas outlet path, the gas outlet of the second gas outlet path and the gas outlet of the third gas outlet path are respectively used to connect to the fuel cell, that is, the gas outlet of the first gas outlet path, the gas outlet of the second gas outlet path and the gas outlet of the third gas outlet path are connected to independently arranged fuel cells.

[0033] Specifically, the gas purification device 4 is arranged in the second gas outlet path.

[0034] In a specific embodiment, the air inlet of the first outlet gas path is provided with a first control valve, the air inlet of the second outlet gas path is provided with a second control valve, and the third outlet gas path is provided with a third control valve. The first control valve, the second control valve and the third control valve are flexibly switched to control the subsequent processing process of the product gas pipeline to adapt to different types of fuel cell power generation and energy supply.

[0035] In a specific embodiment, the fuel cell integrated energy supply system also includes a heat exchange module 6, a condensation tower and a raw material conveying device 9. The heat exchange module 6 and the condensation tower are arranged between the outlet of the fuel catalytic reforming reactor 103 and the air inlet of the air inlet path along the gas flow direction. The heat exchange module 6 is used to exchange heat between the high-temperature medium at the outlet of the fuel catalytic reforming reactor 103 and the raw material.

[0036] The raw material conveying device 9 conveys the raw material to the heat exchange module 6 for heat exchange and then discharges it into the feed port of the fuel catalytic reforming reactor 103. The high-temperature product gas discharged from the reactor 1 in the heat exchange module 6 exchanges heat with the raw material to preheat the raw material and gasify it, without the need to set up an additional processing device to heat the raw material. Through the above heat exchange, the cycle cooling of the fuel cell operation and the gasification preheating of the reforming raw material are simultaneously achieved, realizing effective use of heat.

[0037] In a specific embodiment, the fuel cell integrated energy supply system further includes an integrated frame 2 and a travel wheel 8 installed at the bottom end of the integrated frame 2. Specifically, the reactor 1 and the raw material conveying device 9 can both be installed on the integrated frame 2.

[0038] In a specific embodiment, three fuel cells are provided, namely, a first fuel cell 13, a second fuel cell 14 and a third fuel cell 15. The first fuel cell 13 is connected to the outlet of the first outlet gas path, the second fuel cell 14 is connected to the outlet of the third outlet gas path, and the third fuel cell 15 is connected to the outlet of the second outlet gas path.

[0039] The gas outlet of the first fuel cell 13, the gas outlet of the second fuel cell 14, and the gas outlet of the third fuel cell 15 are all connected to the gas inlet of the catalytic combustion reactor 102. Specifically, different types of fuel cells are provided with an anode tail gas recovery system, which circulates back into the fuel catalytic combustion reactor 102 for catalytic combustion and heat supply. Specifically, the first fuel cell 13 is a high temperature proton exchange membrane fuel cell (HT-PEMFC), the third fuel cell 15 is a proton exchange membrane fuel cell (LT-PEMFC), and the second fuel cell 14 is a solid oxide fuel cell (SOFC).

[0040] like Figure 5As shown, in a specific embodiment, the fuel cell integrated energy supply system further includes a water delivery device 7, a third heat exchanger 22, a water-gas shift reactor 20, a second heat exchanger 21 and a gas-liquid separator 19. The water delivery device 7 can be a water tank or an external water pipe. When the water delivery device 7 is a water tank, a pump body structure for water delivery is provided to facilitate water delivery.

[0041] The third heat exchanger 22, the water-gas shift reactor 20, the second heat exchanger 21 and the gas-liquid separator 19 are sequentially arranged in the air inlet path along the fluid movement direction.

[0042] The water delivery device 7 is connected to the second heat exchanger 21, the third heat exchanger 22 and the reactor 1 through the first pipeline, and the water in the water delivery device 7 is sequentially heat exchanged through the second heat exchanger and the third heat exchanger before flowing into the reactor 1. That is, the present application cools the post-reaction medium by water, and heats the water by the post-reaction medium, thereby avoiding heat waste and achieving the cooling of the post-reaction medium at the same time.

[0043] In order to facilitate overall movement, preferably, the reactor 1 , the first heat exchanger 6 , the third heat exchanger 22 , the water-gas shift reactor 20 , the second heat exchanger 21 , the gas-liquid separator 19 and the water delivery device 7 are all installed on the integrated frame 2 .

[0044] In a specific embodiment, the fuel cell integrated energy supply system also includes a first heat exchanger 23 and a hydrocarbon raw material storage device 25. The first heat exchanger 23 is connected to the catalytic combustion exhaust gas outlet of the reactor 1, and the catalytic combustion exhaust gas of the reactor 1 is discharged to the first heat exchanger 23 through the catalytic combustion exhaust gas outlet.

[0045] The hydrocarbon raw material in the hydrocarbon raw material storage device 25 in the raw material exchanges heat with at least one of the first fuel cell 13, the second fuel cell 14 and the third fuel cell 15 through the second pipeline, and then enters the fuel catalytic reforming reactor 103 after heat exchange with the first heat exchanger 23. In this way, the hydrocarbon raw material can be heated by the fuel cell and the catalytic combustion exhaust gas, and is heated after the heat exchange with the catalytic combustion exhaust gas in the first heat exchanger 23, without the need to set up an additional heating device to heat the hydrocarbon raw material. The raw material of the fuel cell integrated energy supply system of the present application is heat-exchanged step by step with the excess heat inside the fuel cell integrated energy supply system, and the energy utilization efficiency of the fuel cell integrated energy supply system is improved.

[0046] like Figure 5As shown, specifically, the fuel cell tail gas generated by the first fuel cell 13, the second fuel cell 14 and the third fuel cell 15 can flow into the reactor 1 again as a catalytic combustion raw material. Of course, the tail gas purified by the gas purification device can also flow into the reactor 1 again as a catalytic combustion raw material. Specifically, the fuel cell tail gas, air, catalytic combustion tail gas and the tail gas purified by the gas purification device are collected at the catalytic combustion raw material inlet 5 and flow into the fuel catalytic combustion reactor 102 of the reactor 1. The water after heat exchange and the hydrocarbon raw material after heat exchange flow into the fuel catalytic reforming reactor 103 of the reactor 1.

[0047] During specific use, the present invention controls the switching of the first control valve, the second control valve and the third control valve according to the specific requirements of different fuel cells for fuel, so as to provide different hydrogen production pipeline process flows. Specifically, the purity of hydrogen production is divided into three purity ranges, which are respectively >54% (for SOFC), >70% (for HT-PEMFC) and >99.97% (for LT-PEMFC). Through post-processing devices and heat recovery, while meeting the different hydrogen requirements of fuel cells, the overall efficiency of the system is greatly improved, and the problems of difficult matching and low efficiency of reforming hydrogen production and fuel cell hydrogen production are solved. Specifically, the switching of the first control valve, the second control valve and the third control valve is controlled by the valve controller 11. Specifically, the valve controller 11 can switch the structure.

[0048] Specifically, the product gas is purified by the gas purification device 4. The gas purification device 4 may be a membrane separation device. Specifically, the product gas is purified by a pressure swing adsorption purification device. Of course, after being purified by the gas purification device 4, it is further purified by the membrane separation device, that is, the pressure swing adsorption purification device and the membrane separation device are arranged in series to improve the purification effect.

[0049] In a specific embodiment, the fuel cell integrated energy supply system further includes a control module, and the reactor 1, the gas post-processing device and the gas path distribution device 3 are all connected to the control module signal, and the control module controls the operation of the reactor 1 and controls the opening and closing of the first gas outlet gas path and the second gas outlet gas path on the gas path distribution device 3. Specifically, the control module is provided with an operating system, and when the user selects the corresponding connected fuel cell, the control module controls the fuel cell integrated energy supply system to perform actions adapted to the fuel cell.

[0050] When the reforming raw material can also be methanol water 17, the control module includes a methanol flow regulator 12 for controlling the feed flow rate of the reforming raw material and the flow rate of the product gas flowing into the combustion reactor 15. When the reforming raw material can also be a garbage pyrolysis gas raw material 18, the control module includes a garbage pyrolysis gas flow regulator 16, which controls the feed flow rate of the reforming raw material and the flow rate of the product gas flowing into the combustion reactor 15.

[0051] LT-PEMFC uses the precious metal Pt as a catalyst, which is extremely sensitive to CO in the fuel. A concentration greater than 0.2ppm will cause catalyst poisoning, and the purity of hydrogen in the fuel is required to be greater than 99.97%. In addition, most hydrogen production and use are separated, and the storage and transportation of hydrogen are key factors restricting its development. LT-PEMFC has high requirements for hydrogen purity (especially strict requirements for the impurity CO content) and hydrogen storage and transportation issues. For SOFC, the requirements for the purity of hydrogen in the fuel are not high (strong tolerance to CO impurity content), and the reformed synthetic gas of hydrocarbon fuels can be directly introduced into SOFC for power generation. However, its operating temperature is high, generally working at around 800°C, and the anode is prone to carbon deposition, resulting in problems such as reduced power generation efficiency. Therefore, the differences in the working environments of different types of fuel cells also make it difficult for a hydrogen production system to match multiple types of fuel cells, and this application solves the above technical problems.

[0052] For ease of understanding, several specific implementations are described below.

[0053] Example 1 Test of hydrogen production effect of fuel precious metal reforming hydrogen production system The corresponding tubes of the catalytic combustion gas path of the fuel catalytic combustion reactor 102 are filled with a self-heating catalyst, which is a Pt-loaded alumina catalyst with a loading content of 1wt% to 5wt%. The alumina is in a granular form with a corresponding volume of about 25L. The catalytic reforming gas path of the fuel catalytic reforming reactor 103 is filled with a pyrochlore carrier-loaded precious metal (Rh) reforming catalyst with a molecular formula of 1wt%Rh / La 2 Ce 2 O 7 The catalyst volume is about 80L, the diameter is 2 mm to 10 mm, and the length is 2 mm to 8 mm.

[0054] The mixture of fuel and air 10 is introduced into the fuel catalytic combustion reactor 102, and a catalytic combustion reaction occurs with the self-heating catalyst in the tubes at room temperature of 25°C. The heat released by the catalytic combustion reaction in the tubes is transmitted to the heat transfer oil in close contact with the tubes in the fuel catalytic combustion reactor 102, and the heated heat transfer oil is then transmitted to the tubes inside the fuel catalytic reforming reactor 103, so that the catalytic reforming catalyst in close contact with the tubes in the fuel catalytic reforming reactor 103 is heated. After 10min to 30min, the temperature of the heat transfer oil corresponding to the fuel catalytic combustion gas path reaches 600℃ to 800℃, and the catalytic reforming catalyst reaches a target temperature of about 700℃. In the stable operation stage, the fuel catalytic combustion gas path works intermittently according to whether the heat transfer oil temperature reaches 600℃ to 800℃. When the heat transfer oil temperature reaches 600℃ to 800℃, the fuel and air 10 raw materials are suspended. When the heat transfer oil temperature is lower than 600℃, the fuel and air 10 continue to be introduced until the heat transfer oil temperature rises to 600℃ to 800℃ and stops. The fuel catalytic combustion reactor 102 and the fuel catalytic reforming reactor 103 use a total of about 150L of heat transfer oil.

[0055] After the heat transfer oil in the fuel catalytic combustion reactor 102 reaches the target temperature of 600-800°C, the fuel and water vapor are introduced into the fuel catalytic reforming reactor 103, the reforming temperature is 700°C, the space velocity is 10000h -1 , water-carbon ratio is 2, pressure is normal pressure, and reforming gas flow rate is 1~100Nm 3 / h, the fuel composition is shown in Table 1. During the test, the reforming hydrogen production pipeline was switched to three different processes of LT-PEMFC, HT-PEMFC and SOFC, and the gas composition was tested respectively, which is listed in Table 1. Specifically, the first fuel cell 13 is a high-temperature proton exchange membrane fuel cell (HT-PEMFC), which is installed in the HT-PEMFC pipeline. The third fuel cell 15 is a proton exchange membrane fuel cell (LT-PEMFC), which is installed in the LT-PEMFC pipeline. The second fuel cell 14 is a solid oxide fuel cell (SOFC), which is installed in the SOFC pipeline. Since the HT-PEMFC pipeline is consistent with the SOFC pipeline, the corresponding gas components in the pipeline, so the product gas composition of the HT-PEMFC pipeline and the SOFC pipeline is consistent. After the fuel reforming, the LH-PEMFC is connected to a PSA hydrogen purification device, which can make the hydrogen purity in the product gas reach 99.98%, which meets the LH-PEMFC hydrogen purity requirements.

[0056] Table 1 Test results of hydrogen production effect of precious metal catalysts in different pipelines

[0057] Example 2 Test of hydrogen production effect of fuel non-precious metal reforming hydrogen production system The corresponding tubes of the catalytic combustion gas path of the fuel catalytic combustion reactor 102 are filled with a self-heating catalyst, which is a Pt-loaded alumina catalyst with a loading content of 1 wt% to 5wt%. The alumina is in a granular form, and the corresponding volume is about 25L. The catalytic reforming gas path of the fuel catalytic reforming reactor 103 is filled with a pyrochlore carrier-loaded non-precious metal Ni reforming catalyst with a molecular formula of 3wt% Ni / La 2 Ce 2 O 7 Catalyst, the catalyst volume is about 80L, the diameter is 2mm~10mm, and the length is 2mm~8mm.

[0058] The mixture of fuel and air 10 is introduced into the fuel catalytic combustion reactor 102, and a catalytic combustion reaction occurs with the self-heating catalyst in the tubes at room temperature of 25°C. The heat released by the catalytic combustion reaction in the tubes is transmitted to the heat transfer oil in close contact with the tubes in the fuel catalytic combustion reactor 102, and the heated heat transfer oil is then transmitted to the tubes inside the fuel catalytic reforming reactor 103, so that the catalytic reforming catalyst in close contact with the tubes in the fuel catalytic reforming reactor 103 is heated. After 10min to 30min, the temperature of the heat transfer oil corresponding to the fuel catalytic combustion gas path reaches 500℃ to 700℃, and the catalytic reforming catalyst reaches the target temperature of 600℃. In the stable operation stage, the fuel catalytic combustion gas path works intermittently according to whether the heat transfer oil temperature reaches 500℃ to 700℃. When the heat transfer oil temperature reaches 500℃ to 700℃, the fuel and air 10 raw materials are suspended. When the heat transfer oil temperature is lower than 500℃, the fuel and air 10 continue to be introduced until the heat transfer oil temperature rises to 500℃ to 700℃. The fuel catalytic combustion reactor 102 and the fuel catalytic reforming reactor 103 use a total of about 150L of heat transfer oil.

[0059] After the heat transfer oil in the fuel catalytic combustion reactor 102 reaches the target temperature of 500℃~700℃, the fuel and water vapor are introduced into the fuel catalytic reforming reactor 103, and the reforming temperature is 600℃ and the space velocity is 5000h -1 , water-carbon ratio is 3, pressure is normal pressure, and reforming gas flow rate is 1~100Nm 3 / h, and the fuel composition is shown in Table 2. During the test, the first control valve, the second control valve and the third control valve corresponding to the reforming hydrogen production pipeline of the fuel catalytic reforming reactor 103 were switched to three different processes: LT-PEMFC, HT-PEMFC and SOFC, and the product gas composition was tested respectively, which is listed in Table 2.

[0060] Table 2 Test results of hydrogen production effect of non-precious metal catalysts in different pipelines

[0061] Example 3 Fuel reforming to produce hydrogen for LT-PEMFC power generation The corresponding tubes of the catalytic combustion gas path of the fuel catalytic combustion reactor 102 are filled with a self-heating catalyst, which is a Pt-loaded alumina-type catalyst with a loading content of 1 wt% to 5wt%. The alumina is in granular form, and the corresponding volume is about 25 L. The catalytic reforming gas path of the fuel catalytic reforming reactor 103 is filled with a pyrochlore carrier-loaded non-precious metal Ni reforming catalyst, with a molecular formula of 3wt% Ni / La2Ce2O7 catalyst, a catalyst volume of about 80 L, a diameter of 2 mm to 10 mm, and a length of 2 mm to 8 mm.

[0062] The mixture of fuel and air 10 is introduced into the fuel catalytic combustion reactor 102, and a catalytic combustion reaction occurs with the self-heating catalyst in the tubes at room temperature of 25°C. The heat released by the catalytic combustion reaction in the tubes is transmitted to the heat transfer oil in close contact with the tubes in the fuel catalytic combustion reactor 102, and the heated heat transfer oil is then transmitted to the tubes inside the fuel catalytic reforming reactor 103, so that the catalytic reforming catalyst in close contact with the tubes in the fuel catalytic reforming reactor 103 is heated. After 10min to 30min, the temperature of the heat transfer oil corresponding to the fuel catalytic combustion gas path reaches 500℃ to 700℃, and the catalytic reforming catalyst reaches the target temperature of 600℃. In the stable operation stage, the fuel catalytic combustion gas path works intermittently according to whether the heat transfer oil temperature reaches 500℃ to 700℃. When the heat transfer oil temperature reaches 500℃ to 700℃, the fuel and air 10 raw materials are suspended. When the heat transfer oil temperature is lower than 500℃, the fuel and air 10 continue to be introduced until the heat transfer oil temperature rises to 500℃ to 700℃. The fuel catalytic combustion reactor 102 and the fuel catalytic reforming reactor 103 use a total of about 150L of heat transfer oil.

[0063] After the heat transfer oil in the fuel catalytic combustion reactor 102 reaches the target temperature of 500-700°C, the fuel and water vapor are introduced into the fuel catalytic reforming reactor 103, the reforming temperature is 600°C, the space velocity is 5000h -1 , the water-carbon ratio is 3, and the pressure is normal pressure.

[0064] After the fuel passes through the fuel catalytic reforming reactor 103, it enters the gas purification device 4 for hydrogen purification process, and after purification, it enters the LT-PEMFC battery to generate electricity. During the test, the composition of the product gas after passing through the reactor 1 and the gas purification device 4 was detected, and the results were as follows: Figure 6 and Figure 7 As shown, the power generation time curve is as follows Figure 8 As shown, the results show that stable power generation of PEMFC can be maintained.

[0065] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0066] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A fuel cell integrated energy supply system, characterized in that: include: A reactor (1), wherein the reactor (1) comprises a fuel catalytic combustion reactor (102) and a fuel catalytic reforming reactor (103); Gas post-processing device; A gas path distribution device (3), the gas path distribution device (3) comprising an air inlet path, a first air outlet path and a second air outlet path, the first air outlet path and the second air outlet path are connected to the air outlet of the air inlet path, the air outlet of the first air outlet path and the air outlet of the second air outlet path are respectively provided with an interface for connecting to a fuel cell, the gas post-treatment device is arranged on the second air outlet path to post-treat the product gas passing through the second air outlet path, and the air inlet of the air inlet path is connected to the air outlet of the fuel catalytic reforming reactor (103).

2. The fuel cell integrated energy supply system according to claim 1, characterized in that: The gas post-processing device comprises a gas purification device (4), the gas purification device (4) is used for purifying product gas, and the gas purification device (4) is arranged on the second gas outlet path.

3. The fuel cell integrated energy supply system according to claim 2, characterized in that: It also includes a third air outlet path, wherein the first air outlet path, the second air outlet path and the third air outlet path are arranged in parallel, the air inlet of the first air outlet path is provided with a first control valve, the air inlet of the second air outlet path is provided with a second control valve, and the third air outlet path is provided with a third control valve.

4. The fuel cell integrated energy supply system according to claim 2, characterized in that: It also includes a third heat exchanger (22), a water-gas shift reactor (20), a second heat exchanger (21), and a gas-liquid separator (19) which are sequentially arranged on the air inlet path along the fluid movement direction; A water conveying device (7), wherein the water conveying device (7) is connected to the second heat exchanger (21), the third heat exchanger (22) and the reactor (1) via a first pipeline, and water in the water conveying device (7) passes through the second heat exchanger (21) and the third heat exchanger (22) in sequence for heat exchange before flowing into the reactor (1).

5. The fuel cell integrated energy supply system according to claim 4, characterized in that: It also includes an integrated frame (2) and a walking wheel (8) installed at the bottom end of the integrated frame (2), and the reactor (1), the third heat exchanger (22), the water-gas shift reactor (20), the second heat exchanger (21), the gas-liquid separator (19) and the water conveying device (7) are all installed on the integrated frame (2).

6. The fuel cell integrated energy supply system according to claim 2, characterized in that: The fuel cells are provided with three, namely a first fuel cell (13), a second fuel cell (14) and a third fuel cell (15); the first fuel cell (13) is connected to the outlet of the first outlet gas path, the second fuel cell (14) is connected to the outlet of the third outlet gas path, and the third fuel cell (15) is connected to the outlet of the second outlet gas path; the outlet of the first fuel cell (13), the outlet of the second fuel cell (14) and the outlet of the third fuel cell (15) are all connected to the air inlet of the fuel catalytic combustion reactor (102).

7. The fuel cell integrated energy supply system according to claim 6, characterized in that: Also includes: A first heat exchanger (23), the first heat exchanger (23) being connected to a catalytic combustion exhaust gas outlet of the reactor (1); A hydrocarbon raw material storage device (25), wherein the hydrocarbon raw material in the hydrocarbon raw material storage device (25) exchanges heat with at least one of the first fuel cell (13), the second fuel cell (14) and the third fuel cell (15) through a second pipeline, and then exchanges heat with the first heat exchanger (23) before entering the fuel catalytic reforming reactor (103).

8. The fuel cell integrated energy supply system according to claim 2, characterized in that: The gas purification device (4) comprises a PSA purification device and / or a membrane separation device.

9. The fuel cell integrated energy supply system according to claim 2, characterized in that: It also comprises a control module, the reactor (1), the gas post-processing device and the gas path distribution device (3) are all connected to the control module by signal, and the control module controls the operation of the reactor (1) and controls the opening and closing of the first gas outlet gas path, the second gas outlet gas path and the third gas outlet gas path.

10. The fuel cell integrated energy supply system according to claim 1, characterized in that: It also includes a fourth control valve and a fifth control valve, wherein the fourth control valve controls the feed flow rate of the fuel catalytic reforming reactor (103), and the fifth control valve controls the feed flow rate of the fuel catalytic combustion reactor (102).

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