Methanol-high temperature fuel cell power generation system based on in-situ coupling reformer

Abstract

The invention discloses a methanol-high temperature fuel cell power generation system based on an in-situ coupling reformer, relates to the technical field of hydrogen energy, and solves the problems of slow starting, low reaction rate, low reaction thermal efficiency and low energy utilization rate of a reforming reaction of a methanol autothermal reforming device. Methanol and pure water are mixed and introduced into a heat exchange channel of a combustion and heat exchange integrated device; methanol and air are mixed and introduced into a combustion channel of the combustion and heat exchange integrated device, and flue gas generated by combustion exchanges heat with methanol and pure water in a heat exchange channel; steam of methanol and water is mixed with air, and the mixture is introduced into the in-situ coupling reformer for reforming hydrogen production; generated hydrogen is introduced into an anode of the high-temperature proton exchange membrane fuel cell, and air is introduced into a cathode for power generation. The combustion catalyst and the reforming catalyst are arranged in the same cavity, so that the two reactions are coupled in situ, the design difficulty and the processing cost of the reactor can be reduced, and the energy utilization efficiency of a power generation system is improved.

Description

Technical Field

[0001] This invention relates to the field of hydrogen energy technology, specifically to a methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer. Background Technology

[0002] Rapid technological advancements have led to an ever-increasing demand for energy. Fossil fuels, while a primary energy source, are also major pollutants, causing increasingly severe environmental damage. Therefore, energy conservation and emission reduction have become an inevitable trend in social development. Thus, energy conservation and emission reduction, improving energy efficiency, and developing new energy sources are essential paths to sustainable development.

[0003] Hydrogen, as a high-energy fuel and a clean secondary energy source, is used in various fields. Due to its high calorific value and lack of pollution, hydrogen's applications have received widespread attention, not only for addressing resource shortages but also for mitigating environmental pollution.

[0004] High-temperature proton exchange membrane fuel cells (HT-PEMFCs) can operate at temperatures ranging from 120°C to 200°C, achieving high-efficiency conversion even at lower temperatures. This simplifies the hydrothermal management system and reduces the requirements for hydrogen purity, significantly lowering hydrogen production energy consumption and costs. Based on the characteristics of hydrocarbon fuel reforming hydrogen production technology and the operating temperature range of high-temperature proton exchange membrane fuel cell systems, an in-situ coupled self-heating reforming methanol to hydrogen production-high-temperature fuel cell power generation system was designed.

[0005] For liquid fuel hydrogen production, methanol is liquid at room temperature, facilitating transportation and processing; its low C / H ratio is also advantageous for low-temperature reforming. Based on these conditions, methanol-to-hydrogen production is feasible. Currently, the main methods for methanol-to-hydrogen production include methanol steam reforming, methanol partial oxidation reforming, and methanol autothermal reforming. Methanol autothermal reforming combines a strongly endothermic methanol steam reforming reaction with an exothermic methanol partial oxidation reaction, effectively coupling the endothermic and exothermic processes for high energy utilization.

[0006] However, most current methanol autothermal reforming units have two chambers for catalytic combustion and methanol reforming reactions respectively, resulting in slow start-up of the reforming reaction, low reaction rate, low thermal efficiency of methanol autothermal reforming reaction, complex reactor structure design, high processing cost, and low energy utilization. Summary of the Invention

[0007] To address the aforementioned problems of slow start-up, low reaction rate, low thermal efficiency, and low energy utilization in methanol autothermal reforming devices, this invention proposes a methanol-high-temperature fuel cell power generation system based on an in-situ coupled reformer. By arranging the combustion catalyst and reforming catalyst within the same chamber, this invention achieves in-situ coupling of the two reactions, reducing reactor design challenges and manufacturing costs, and improving the energy utilization efficiency of the power generation system.

[0008] This invention proposes a methanol-high-temperature fuel cell power generation system based on an in-situ coupled reformer, specifically comprising a methanol storage tank, a pure water storage tank, a first blower, an integrated combustion and heat exchange device, an in-situ coupled reformer, a second blower, and a high-temperature proton exchange membrane fuel cell. A portion of the methanol in the methanol storage tank and the pure water in the pure water storage tank are mixed and fed into the heat exchange channel of the integrated combustion and heat exchange device; another portion of the methanol and a portion of the air blown out by the first blower are mixed and fed into the combustion channel of the integrated combustion and heat exchange device; the heat exchange channel is connected to the inlet end of the in-situ coupled reformer; another portion of the air blown out by the first blower and the heat-exchanged methanol-water mixture are fed into the in-situ coupled reformer; the outlet end of the in-situ coupled reformer is connected to the anode of the high-temperature proton exchange membrane fuel cell; and the second blower is connected to the cathode of the high-temperature proton exchange membrane fuel cell.

[0009] Furthermore, the integrated combustion and heat exchange device includes a combustion wall, a heat exchange wall, and an inner and outer sleeve support structure. The combustion wall and the heat exchange wall are tubular structures, and the combustion wall is coaxially arranged inside the heat exchange wall through the inner and outer sleeve support structure.

[0010] Furthermore, the inner and outer walls of the combustion wall are provided with heat insulation material, and the outer wall of the heat exchange wall is provided with heat insulation material.

[0011] Furthermore, the in-situ coupled reformer includes a reactor shell and a catalyst barrier screen, with the catalyst barrier screen disposed inside the reactor shell; the part of the reactor shell from the inlet end to the catalyst barrier screen is provided with a catalytic combustion catalyst, and the part from the catalyst barrier screen to the outlet end is provided with a CO2 adsorbent, a methanol reforming catalyst, and methanol and water adsorbents in sequence.

[0012] Furthermore, the catalytic combustion catalyst and the methanol reforming catalyst are arranged in a packed configuration.

[0013] Furthermore, the catalytic combustion catalyst is Pt or Al2O3, and the methanol reforming catalyst is CuO, ZnO, or Al2O3.

[0014] Furthermore, it also includes a first distributor and a second distributor. The outlet end of the methanol storage tank is connected to the inlet end of the first distributor, and the outlet end of the first blower is connected to the inlet end of the second distributor. One outlet end of the first distributor and one outlet end of the second distributor are connected to the combustion channel. The other outlet end of the first distributor is connected to the outlet end of the pure water storage tank and then to the heat exchange channel. The other outlet end of the second distributor is connected to the outlet end of the heat exchange channel and then to the inlet end of the in-situ coupled reformer.

[0015] Furthermore, it also includes a first combiner, one inlet of which is connected to the outlet of the high-temperature proton exchange membrane fuel cell; one outlet of the first splitter and one outlet of the second splitter are connected to the other inlet of the first combiner; and the outlet of the first combiner is connected to the combustion channel.

[0016] Furthermore, the fluid flows in opposite directions inside the combustion channel and the heat exchange channel.

[0017] Furthermore, it also includes a methanol valve, a methanol pump, a water valve, a water pump, a first air regulating valve, and a second air regulating valve. The first blower is connected through the first air regulating valve and the second distributor. The methanol storage tank, methanol valve, methanol pump, and first distributor are connected in sequence. The pure water storage tank, water valve, and water pump are connected in sequence. The outlet end of the water pump is connected to one outlet end of the first distributor and then connected to the heat exchange channel. The second blower is connected to the cathode of the high-temperature proton exchange membrane fuel cell through the second air regulating valve.

[0018] The beneficial effects of the methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer described in this invention are as follows: (1) The methanol-high temperature fuel cell power generation system based on in-situ coupled reformer described in this invention can better control the reaction process and reaction rate by using pumps and regulating valves to control the flow rate and ratio of fuel and air, thereby controlling the reaction temperature to ensure that methanol combustion and methanol reforming reactions are carried out within the temperature limit range.

[0019] (2) The methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer described in this invention directly couples methanol catalytic combustion and methanol reforming for hydrogen production within the same chamber, resulting in better heat and mass transfer, higher thermal energy utilization efficiency, simpler reactor design, and lower processing costs. It is a compact methanol autothermal reforming hydrogen production reactor with high hydrogen production rate. Furthermore, it is equipped with adsorbents for CO2, methanol, and water to ensure a high hydrogen concentration at the product outlet, which can be directly fed into a high-temperature proton exchange membrane fuel cell, ensuring stable and reliable system operation.

[0020] (3) The methanol-high temperature fuel cell power generation system based on in-situ coupled reformer described in this invention does not require auxiliary start-up equipment or external heat source for the reaction. The reaction starts immediately after the reactants enter the reactor, the reaction starts quickly, the structure is simple, and the processing cost is low.

[0021] (4) The methanol-high temperature fuel cell power generation system based on in-situ coupled reformer described in this invention adopts an integrated combustion and heat exchange device, which coaxially sets the combustion side inside the heat exchange side. The heat generated by the combustion side is directly transferred to the heat exchange side, providing heat for fuel preheating and methanol reforming reaction, accelerating the methanol reforming reaction rate, which can not only reduce energy loss but also improve energy utilization efficiency, making the overall system more efficient and the structure more compact.

[0022] (5) The methanol-high temperature fuel cell power generation system based on in-situ coupled reformer described in this invention provides energy to the first blower and the second blower respectively through the high temperature proton exchange membrane fuel cell. The high temperature proton exchange membrane fuel cell stores the remaining electrical energy in the energy storage battery, which reduces energy costs and production costs, improves the energy utilization rate of the system and realizes the cascade utilization of energy. Attached Figure Description

[0023] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0024] In the attached diagram: Figure 1 This is a schematic diagram of the structure of a methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer as described in this invention; Figure 2 This is a schematic diagram of the structure of an in-situ coupled reformer for a methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer, as described in this invention. Figure 3 This invention relates to a methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer. Figure 2 Cross-sectional view at point AA; Figure 4 This is a schematic diagram of the integrated combustion heat exchange device of a methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer, as described in this invention. Wherein: 1-Methanol storage tank, 2-Methanol valve, 3-Methanol pump, 4-First distributor, 5-Pure water storage tank, 6-Water valve, 7-Water pump, 8-First blower, 9-First air regulating valve, 10-Second distributor, 11-Integrated combustion heat exchange device, 12-First combiner, 13-In-situ coupled reformer, 14-Second blower, 15-Second air regulating valve, 16-High-temperature proton exchange membrane fuel cell, 161-Anode, 162-Cathode, 17-Energy storage battery, 18-Insulation material, 19-Reactor shell, 20-Catalytic combustion catalyst, 21-Catalyst barrier mesh, 22-CO2 adsorbent, 23-Methanol reforming catalyst, 24-Methanol and water adsorbent, 25-Combustion wall and insulation layer, 26-Heat exchange wall and insulation layer, 27-Inner and outer jacket support structure. Detailed Implementation

[0025] The technical solution of this invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of, and not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0026] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0028] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] Specific implementation method one: See Figures 1-4This embodiment is described in detail. The methanol-high-temperature fuel cell power generation system based on an in-situ coupled reformer described in this embodiment specifically includes a methanol storage tank 1, a methanol valve 2, a methanol pump 3, a first distributor 4, a pure water storage tank 5, a water valve 6, a water pump 7, a first blower 8, a first air regulating valve 9, a second distributor 10, a combustion heat exchange integrated device 11, a first combiner 12, an in-situ coupled reformer 13, a second blower 14, a second air regulating valve 15, and a high-temperature proton exchange membrane fuel cell 16; the outlet end of the methanol storage tank 1 and the inlet end of the methanol valve 2... The outlet of methanol valve 2 is connected to the inlet of methanol pump 3, and the outlet of methanol pump 3 is connected to the inlet of the first distributor 4. The outlet of pure water storage tank 5 is connected to the inlet of water valve 6, and the outlet of water valve 6 is connected to the inlet of water pump 7. The outlet of water pump 7 and one outlet of the first distributor 4 are connected together and then connected to the heat exchange channel of the integrated combustion heat exchange device 11, so that a portion of methanol in methanol storage tank 1 and pure water in pure water storage tank 5 are mixed and fed into the heat exchange channel of the integrated combustion heat exchange device 11.

[0030] The outlet of the first blower 8 is connected to the inlet of the first air regulating valve 9. The outlet of the first air regulating valve 9 is connected to the inlet of the second splitter 10. One outlet of the second splitter 10 and the other outlet of the first splitter 4 are connected and then connected to one inlet of the first manifold 12. The other inlet of the first manifold 12 is connected to the outlet of the high-temperature proton exchange membrane fuel cell 16. The outlet of the first manifold 12 is connected to the combustion channel of the integrated combustion heat exchange device 11, so that a portion of the air blown out by the first blower 8 is mixed with the methanol storage tank. Another portion of methanol flowing out of 1 is mixed with the exhaust gas discharged from the high-temperature proton exchange membrane fuel cell 16 and enters the combustion channel for combustion. The heat generated by combustion is transferred to the water and methanol in the heat exchange channel, causing the water and methanol to evaporate into gas. The other outlet end of the second splitter 10 and the heat exchange channel outlet end of the integrated combustion heat exchange device 11 are connected and then connected to the inlet end of the in-situ coupled reformer 13. Another portion of air blown out by the first blower 8 is mixed with water and methanol vapor and then introduced into the in-situ coupled reformer 13 for reforming reaction.

[0031] The first distributor 4 controls the flow distribution of methanol into the combustion and heat exchange channels of the integrated combustion and heat exchange device 11, thereby controlling the temperature in the combustion channel of the integrated combustion and heat exchange device 11 to not exceed the material's heat resistance limit and simultaneously meeting the heat required for preheating methanol and water. The second distributor 10 controls the flow distribution of air into the first combiner 12 and the in-situ coupled reformer 13, controlling the amount of air entering the integrated combustion and heat exchange device 11 and the in-situ coupled reformer 13, and meeting the temperature limits of both in the combustion section.

[0032] The outlet of the in-situ coupled reformer 13 is connected to the anode 161 of the high-temperature proton exchange membrane fuel cell 16; the second blower 14 is connected to the cathode 162 of the high-temperature proton exchange membrane fuel cell 16 through the second air regulating valve 15; the hydrogen generated by methanol reforming in the in-situ coupled reformer 13 undergoes an electrochemical reaction with air in the high-temperature proton exchange membrane fuel cell 16, and finally exhausts as exhaust gas.

[0033] The integrated combustion and heat exchange device 11 integrates the burner and heat exchanger into a single design. The integrated combustion and heat exchange device 11 is composed of inner and outer double-layered tubes. The integrated combustion and heat exchange device 11 includes a combustion wall 25, a heat exchange wall 26, and an inner and outer tube support structure 27. The combustion wall 25 and heat exchange wall 26 are tubular structures. The combustion wall 25 is coaxially arranged inside the heat exchange wall 26 via the inner and outer tube support structure 27. The combustion wall 25 forms the inner tube as a combustion channel, and the heat exchange wall 26 forms the outer tube as a heat exchange channel. The fluid flows in opposite directions inside the combustion channel and the heat exchange channel. The inner and outer walls of the combustion wall 25 are provided with insulation material, and the outer wall of the heat exchange wall 26 is also provided with insulation material. The inner tube, serving as the catalytic combustion side, is constructed using high-temperature resistant nickel-based alloys and is encased in insulation material. The outer tube, serving as the heat exchange side, is constructed using stainless steel and its outer wall is also covered with insulation material. The high-temperature flue gas generated on the combustion side exchanges heat counter-currently with methanol, water, and air in the outer tube through the inner tube wall. This integrated combustion and heat exchange device 11 possesses excellent thermal conductivity, thus achieving efficient heat transfer. This device not only reduces energy loss but also improves energy utilization efficiency, resulting in a more efficient and compact overall system.

[0034] Methanol, water, and air enter the cavity of the in-situ coupled reformer 13 through pipes located at the front end of the reactor shell 19, ensuring the flow of reactants and mass transfer efficiency. Methanol is liquid at room temperature, making it convenient to transport and handle with minimal processing difficulty. Methanol-to-hydrogen technology effectively reduces air pollution, making it more environmentally friendly. Methanol molecules contain usable CH groups, resulting in high energy utilization for hydrogen production, making it an excellent raw material for hydrogen production. The in-situ coupled reformer 13 includes insulation material 18, a reactor shell 19, and a catalyst barrier mesh 21. An additional layer of insulation material 18 is installed inside the reactor shell 19. The catalyst barrier mesh 21 is located inside the reactor shell 19, dividing the internal cavity of the in-situ coupled reformer 13 into front and rear parts. Figure 2 The left end is the inlet, and the right end is the outlet. Inside the reactor shell 19, the section from the inlet to the catalyst barrier 21 is the catalytic combustion section, which contains the catalytic combustion catalyst 20. The section from the catalyst barrier 21 to the outlet is the methanol reforming section, which contains, in sequence, a CO2 adsorbent, a methanol reforming catalyst 23, and methanol and water adsorbents 24. The catalyst barrier 14 has a cross-section as shown in the figure. Figure 3The mesh structure shown has a pore diameter smaller than that of the catalytic combustion catalyst 20 and the methanol reforming catalyst 23. This not only separates the catalytic combustion catalyst 20 and the methanol reforming catalyst 23 but also ensures that the mixed vapor of methanol and water enters the methanol reforming chamber for reaction. In the first half of the chamber, the amount of air entering the in-situ coupled reformer 13 is controlled by the second distributor 10, thereby limiting the combustion temperature and methanol reaction amount for the methanol catalytic combustion reaction. Simultaneously, it provides sufficient heat for fuel preheating and the methanol-water vapor reforming reaction in the second half. CO2 adsorbent 22 is used to adsorb CO2 generated in the catalytic combustion section; its components can be metal-organic framework materials, activated carbon, etc. Methanol and water adsorbent 24 is used to adsorb unreacted methanol and water vapor in the methanol reforming section, ensuring that the gas discharged from the in-situ coupled reformer 13 is high-purity hydrogen, which can be directly introduced into the high-temperature proton exchange membrane fuel cell 16 to undergo an electrochemical reaction with air. The methanol and water adsorbent 24 can be composed of molecular sieves, activated carbon, or silica gel, etc. Within the in-situ coupled reformer 13, both the reaction and heat transfer processes occur within a single chamber. Compared to a two-chamber reformer, this invention offers higher energy conversion and utilization rates, and the device is simple, compact, and highly operable. Encasing the reactor shell 19 with a layer of insulation material 18 reduces energy loss and fully utilizes the heat released from the methanol catalytic combustion reaction, resulting in higher overall system efficiency.

[0035] The catalytic combustion catalyst 20 and the methanol reforming catalyst 23 are arranged in a packed configuration. The catalytic combustion catalyst 20 is Pt or Al2O3, and the methanol reforming catalyst 23 is CuO, ZnO, or Al2O3.

[0036] In this embodiment, high-purity hydrogen from the outlet of the in-situ coupled reformer 13 enters the anode of the high-temperature proton exchange membrane fuel cell 16. The second blower 14 compresses and regulates the air before it enters the cathode of the high-temperature proton exchange membrane fuel cell 16. The high-temperature, high-pressure hydrogen-air mixture discharged after the reaction in the high-temperature proton exchange membrane fuel cell 16 is connected to the combustion side of the integrated combustion heat exchange device 11. The heat generated on the combustion side of this device preheats the fuel and provides heat. When the heat provided by the high-temperature, high-pressure hydrogen-air mixture discharged from the high-temperature proton exchange membrane fuel cell 16 is insufficient (i.e., the fuel temperature is not preheated enough), the flow rate of methanol and air entering the integrated combustion heat exchange device 11 can be appropriately increased. This reduces the input of external energy, achieves cascaded energy utilization, accelerates the reaction rate of methanol catalytic combustion and reforming, and improves the system's energy utilization rate.

[0037] In this embodiment, the output terminal of the high-temperature proton exchange membrane fuel cell 16 is connected to the first blower 8, the second blower 14, and the energy storage battery 17, respectively. The high-temperature proton exchange membrane fuel cell 16 supplies the generated electrical energy to the first blower 8 and the second blower 14 to compress the air, and stores the remaining electrical energy in the energy storage battery 17. The energy storage battery 17 can output the stored electrical energy to electrical appliances, thereby reducing energy costs and production costs, improving the energy utilization rate of the system, and realizing the cascade utilization of energy.

[0038] In summary, the methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer described in this invention can better control the reaction process and reaction rate by using pumps and regulating valves to control the flow rate and ratio of fuel and air, thereby controlling the reaction temperature to ensure that methanol combustion and methanol reforming reactions are carried out within the temperature limit range.

[0039] This invention discloses a methanol-high-temperature fuel cell power generation system based on an in-situ coupled reformer. By directly coupling methanol catalytic combustion and methanol reforming for hydrogen production within the same chamber, it achieves better heat and mass transfer, higher thermal energy utilization efficiency, simpler reactor design, and lower processing costs. It is a compact methanol autothermal reforming hydrogen production reactor with high hydrogen production rate. Furthermore, the internal adsorbents for CO2, methanol, and water ensure a high hydrogen concentration at the product outlet, allowing direct feeding into a high-temperature proton exchange membrane fuel cell and guaranteeing stable and reliable system operation.

[0040] The present invention discloses a methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer. The reaction of the in-situ coupled reformer 13 does not require auxiliary start-up equipment or external heat source. The reaction starts working immediately after the reactants enter the reactor. The reaction starts quickly, the structure is simple, and the processing cost is low.

[0041] The methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer described in this invention adopts an integrated combustion and heat exchange device, in which the combustion side is coaxially arranged inside the heat exchange side. The heat generated by the combustion side is directly transferred to the heat exchange side, providing heat for fuel preheating and methanol reforming reaction, accelerating the methanol reforming reaction rate, which not only reduces energy loss but also improves energy utilization efficiency, making the overall system more efficient and the structure more compact.

[0042] The methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer described in this invention provides energy to the first blower 8 and the second blower 14 through the high temperature proton exchange membrane fuel cell 16. The high temperature proton exchange membrane fuel cell 16 stores the remaining electrical energy in the energy storage battery 17, thereby reducing energy costs and production costs, improving the energy utilization rate of the system, and realizing the cascade utilization of energy.

[0043] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the invention. They can also be reasonable combinations of the features described in the above embodiments. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer, characterized in that: The system includes a methanol storage tank (1), a pure water storage tank (5), a first blower (8), an integrated combustion heat exchange device (11), an in-situ coupled reformer (13), a second blower (14), and a high-temperature proton exchange membrane fuel cell (16). A portion of the methanol in the methanol storage tank (1) and the pure water in the pure water storage tank (5) are mixed and fed into the heat exchange channel of the integrated combustion heat exchange device (11); another portion of the methanol and a portion of the air blown out by the first blower (8) are mixed and fed into the combustion channel of the integrated combustion heat exchange device (11); the heat exchange channel is connected to the inlet end of the in-situ coupled reformer (13), and another portion of the air blown out by the first blower (8) and the methanol-water mixture after heat exchange are fed into the in-situ coupled reformer (13). The outlet of the in-situ coupled reformer (13) is connected to the anode (161) of the high-temperature proton exchange membrane fuel cell (16); the second blower (14) is connected to the cathode (162) of the high-temperature proton exchange membrane fuel cell (16).

2. The methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer according to claim 1, characterized in that: The combustion and heat exchange integrated device (11) includes a combustion wall (25), a heat exchange wall (26) and an inner and outer sleeve support structure (27). The combustion wall (25) and the heat exchange wall (26) are tubular structures. The combustion wall (25) is coaxially arranged inside the heat exchange wall (26) through the inner and outer sleeve support structure (27).

3. The methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer according to claim 2, characterized in that: The inner and outer walls of the combustion wall (25) are provided with heat insulation material, and the outer wall of the heat exchange wall (26) is provided with heat insulation material.

4. The methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer according to claim 1, characterized in that: The in-situ coupled reformer (13) includes a reactor shell (19) and a catalyst barrier (21). The catalyst barrier (21) is located inside the reactor shell (19). A catalytic combustion catalyst (20) is provided inside the reactor shell (19) from the inlet end to the catalyst barrier (21). A CO2 adsorbent, a methanol reforming catalyst (23), and a methanol and water adsorbent (24) are sequentially provided from the catalyst barrier (21) to the outlet end.

5. The methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer according to claim 4, characterized in that: The catalytic combustion catalyst (20) and methanol reforming catalyst (23) are installed in a packed manner.

6. The methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer according to claim 4 or 5, characterized in that: The catalytic combustion catalyst (20) is Pt or Al2O3, and the methanol reforming catalyst (23) is CuO, ZnO or Al2O3.

7. The methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer according to claim 1, characterized in that: It also includes a first distributor (4) and a second distributor (10). The outlet end of the methanol storage tank (1) is connected to the inlet end of the first distributor (4), and the outlet end of the first blower (8) is connected to the inlet end of the second distributor (10). One outlet end of the first distributor (4) is connected to one outlet end of the second distributor (10) and then connected to the combustion channel. The other outlet end of the first distributor (4) is connected to the outlet end of the pure water storage tank (5) and then connected to the heat exchange channel. The other outlet end of the second distributor (10) is connected to the outlet end of the heat exchange channel and then connected to the inlet end of the in-situ coupled reformer (13).

8. The methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer according to claim 7, characterized in that: It also includes a first combiner (12), one inlet end of the first combiner (12) is connected to the outlet end of the high-temperature proton exchange membrane fuel cell (16); one outlet end of the first splitter (4) is connected to one outlet end of the second splitter (10) and then connected to the other inlet end of the first combiner (12); the outlet end of the first combiner (12) is connected to the combustion channel.

9. The methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer according to claim 1, 7, or 8, characterized in that: The fluid flows in opposite directions inside the combustion channel and the heat exchange channel.

10. The methanol-high temperature fuel cell power generation system based on an in-situ coupled reformer according to claim 8, characterized in that: It also includes a methanol valve (2), a methanol pump (3), a water valve (6), a water pump (7), a first air regulating valve (9), and a second air regulating valve (15). The first blower (8) is connected through the first air regulating valve (9) and the second distributor (10). The methanol storage tank (1), the methanol valve (2), the methanol pump (3), and the first distributor (4) are connected in sequence. The pure water storage tank (5), the water valve (6), and the water pump (7) are connected in sequence. The outlet end of the water pump (7) is connected to one outlet end of the first distributor (4) and then connected to the heat exchange channel. The second blower (14) is connected to the cathode (162) of the high-temperature proton exchange membrane fuel cell (16) through the second air regulating valve (15).

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