Photothermal afterburning hydrogen production device in cooperation with methanol reforming

Abstract

The application provides a light-heat afterburning and methanol reforming hydrogen production device, and relates to the technical field of hydrogen production. The device comprises a vaporization heat exchange unit, a shunt component and a reforming reaction unit arranged in sequence, a light-heat energy storage unit and a recovery unit. The vaporization heat exchange unit comprises a first outer pipe and a first inner pipe. The first outer pipe forms a vaporization channel, and the first inner pipe forms a first afterburning channel. The reforming reaction unit comprises a second outer pipe and a second inner pipe. The second outer pipe forms a reforming channel provided with a catalyst bed, and the second inner pipe forms a second afterburning channel. The light-heat energy storage unit is arranged outside the first outer pipe and the second outer pipe and is used for supplying heat to the vaporization channel and the reforming channel. The shunt component controls whether the methanol water vapor enters the second afterburning channel. The recovery unit recovers hydrogen-containing reforming gas, first afterburning tail gas and second afterburning tail gas respectively. The device can realize switching of light-heat heat supply, afterburning heat supply and cooperative heat supply, and improve the safety of gas shunt recovery.

Description

Technical Field

[0001] This application relates to the field of hydrogen production technology, and in particular to a photothermal combustion-assisted methanol reforming hydrogen production device. Background Technology

[0002] As marine propulsion systems evolve towards low-carbon and clean energy, hydrogen energy, with its high energy density and clean usage, is gradually becoming a key option for marine power supply. However, direct storage and transportation of hydrogen on ships typically involve high-pressure hydrogen storage, cryogenic hydrogen storage, or specialized hydrogen storage materials, resulting in high system complexity and safety management requirements. In contrast, methanol, as a liquid hydrogen fuel, offers advantages such as convenient storage and transportation, a relatively mature supply system, and suitability for shipboard deployment. On-site hydrogen production via methanol steam reforming can provide a hydrogen source for fuel cells or other hydrogen-using devices. Therefore, methanol reforming hydrogen production units have promising application prospects in marine and mobile energy scenarios.

[0003] Existing methanol reforming hydrogen production units typically require a continuous supply of heat to the vaporization and reforming sections to ensure the vaporization of the methanol-water solution and subsequent reforming reaction under the action of a catalyst. To reduce external energy consumption, existing technologies have explored using solar thermal collectors or trough-type concentrators to heat the methanol reforming reaction, and employing thermal storage materials to buffer fluctuations in solar radiation. However, solar heating is significantly affected by weather, navigation area, diurnal variations, and shading. When sunlight is insufficient or intensity fluctuates, relying solely on solar heating is insufficient to maintain stable operating temperatures in the vaporization and reforming sections, potentially impacting the continuity of methanol vaporization and the stability of the reforming reaction.

[0004] To compensate for insufficient solar heating, existing systems can also be equipped with burners, electric heaters, or external heat exchange structures for auxiliary heating. However, external auxiliary heating structures often increase equipment size, pipeline length, and installation complexity, making modular layout unsuitable for space-constrained areas such as ship decks and rooftops. Furthermore, if the exhaust gas from afterburning and the hydrogen-containing products from methanol reforming are not provided with independent flow and recovery paths, it can easily increase the difficulty of gas mixing and subsequent treatment.

[0005] Therefore, existing methanol reforming hydrogen production units still need further improvement in order to achieve synergy between solar thermal heating and afterburning heating in a compact structure, and to flexibly switch the heating path under different lighting conditions, while ensuring separate recovery of reforming products and afterburning exhaust gas. Summary of the Invention

[0006] To address the issues of insufficient heating stability, inadequate auxiliary combustion structure, and difficulty in separating and recovering product gas and combustion exhaust gas in existing solar-powered methanol reforming hydrogen production devices, this invention provides a solar-thermal combustion-assisted methanol reforming hydrogen production device. This device supplies heat to the vaporization and reforming channels through an outer solar-thermal energy storage unit and an inner combustion channel. A flow divider controls whether vaporized methanol water vapor enters the combustion channel, thereby enabling switching between solar-thermal heating, combustion heating, and synergistic heating, while simultaneously achieving separate recovery of hydrogen-containing reformed gas and combustion exhaust gas.

[0007] The photothermal combustion co-firing methanol reforming hydrogen production device provided in this application adopts the following technical solution: A photothermal combustion-assisted methanol reforming hydrogen production device includes a vaporization heat exchange unit, a flow splitting component and a reforming reaction unit arranged in sequence, as well as a photothermal energy storage unit and a recovery unit. The vaporization heat exchange unit includes a first outer tube and a first inner tube disposed inside the first outer tube. A vaporization channel for the vaporization of methanol aqueous solution is formed inside the first outer tube, and a first combustion channel is formed inside the first inner tube. The reforming reaction unit includes a second outer tube and a second inner tube disposed inside the second outer tube. A reforming channel for methanol steam reforming to produce hydrogen is formed inside the second outer tube. A catalyst bed is provided inside the reforming channel. A second combustion supplement channel is formed inside the second inner tube. The solar thermal energy storage unit is located outside the first outer tube and the second outer tube, and is used to supply heat to the vaporization channel and the reforming channel; The diversion component has a first flow channel connecting the vaporization channel and the reforming channel, and a second flow channel connecting the vaporization channel and the second afterburning channel. The second flow channel is provided with an opening and closing element. The opening and closing element is used to block the second flow channel in the closed state, so that the vaporized methanol water vapor enters the reforming channel through the first flow channel, and is used to open the second flow channel in the open state, so that the vaporized methanol water vapor enters the reforming channel through the first flow channel and enters the second afterburning channel through the second flow channel. The recovery unit includes a hydrogen-containing reforming gas recovery pipe connected to the reforming channel, a first exhaust gas recovery pipe connected to the exhaust end of the first afterburning channel, and a second exhaust gas recovery pipe connected to the exhaust end of the second afterburning channel.

[0008] Furthermore, it also includes a support base, a light-transmitting protective plate, and a partition. The vaporization heat exchange unit, the flow distribution component, the reforming reaction unit, and the photothermal energy storage unit are all disposed on the support base. The light-transmitting protective plate is connected to the support base and covers the vaporization heat exchange unit, the flow distribution component, the reforming reaction unit, and the photothermal energy storage unit. The partition is disposed on the support base and located on the side of the vaporization heat exchange unit and the reforming reaction unit to separate the pipeline installation area and the electrical installation area on the support base.

[0009] Furthermore, the solar thermal energy storage unit includes a thermal storage layer and a trough-type concentrator. The thermal storage layer includes a first thermal storage section disposed outside the first outer tube and a second thermal storage section disposed outside the second outer tube. The trough-type concentrator extends along the direction from the first thermal storage section to the second thermal storage section, and both the first thermal storage section and the second thermal storage section are located within the thermal concentrating area of ​​the trough-type concentrator.

[0010] Furthermore, the first inner tube has a combustion liquid inlet, a combustion air inlet, and a first exhaust outlet that are connected to the first combustion channel. The combustion liquid inlet is used to input a methanol-water solution for combustion into the first combustion channel, the first combustion air inlet is used to input combustion air into the first combustion channel, and the first exhaust outlet is used to discharge the combustion exhaust gas generated in the first combustion channel. The second inner tube has a second combustion air inlet and a second exhaust outlet that are connected to the second combustion channel. The second combustion air inlet is used to input combustion air into the second combustion channel, and the second exhaust outlet is used to discharge the combustion exhaust gas generated in the second combustion channel. The first combustion channel is heat-isolated from the vaporization channel through the wall of the first inner tube, and the second combustion channel is heat-isolated from the reforming channel through the wall of the second inner tube.

[0011] Furthermore, the flow divider includes a flow divider plate disposed between the vaporization heat exchange unit and the reforming reaction unit. The flow divider plate has an inlet side and an outlet side, with the inlet side corresponding to the outlet end of the vaporization channel. The first flow channel and the second flow channel both penetrate the flow divider plate. The outlet end of the first flow channel is connected to the reforming channel, and the outlet end of the second flow channel is connected to the second afterburning channel. Both the first flow channel and the second flow channel are expanding flow channels with an increased cross-sectional area along the direction from the inlet side to the outlet side.

[0012] Furthermore, the opening and closing component includes a valve plate movably disposed on the diversion plate body. The diversion plate body is provided with a valve groove communicating with the second flow channel. The valve plate is inserted into the valve groove and can move between a closed position that blocks the second flow channel and an open position that avoids the second flow channel.

[0013] Furthermore, it also includes a feeding unit, which comprises a main liquid supply interface, a combustion supplementary feed pipe, a vaporization section combustion supplementary air pipe, a reforming section combustion supplementary air pipe, and a heater. The main liquid supply interface is connected to the vaporization channel and is used to input methanol-water solution into the vaporization channel. The combustion supplementary feed pipe is connected to the combustion supplementary liquid inlet and is used to input methanol-water solution for combustion supplementation into the first combustion supplementary channel. The vaporization section combustion supplementary air pipe is connected to the first combustion supplementary air inlet via the heater, and the reforming section combustion supplementary air pipe is connected to the second combustion supplementary air inlet via the heater, so that the combustion supplementary air is preheated before entering the first combustion supplementary channel and the second combustion supplementary channel respectively.

[0014] Furthermore, it also includes a first liquid supply control valve, a second liquid supply control valve, a vaporization section air control valve, a reforming section air control valve, a light detection device, a controller, and an opening / closing drive; the first liquid supply control valve is used to control the connection and disconnection between the main liquid supply interface and the vaporization channel; the second liquid supply control valve is located in the combustion supplementary feed pipe; the vaporization section air control valve is located in the vaporization section combustion supplementary air pipe; the reforming section air control valve is located in the reforming section combustion supplementary air pipe; the opening / closing drive is driven to the opening / closing device; the controller is electrically connected to the light detection device, the first liquid supply control valve, the second liquid supply control valve, the vaporization section air control valve, the reforming section air control valve, the heater, and the opening / closing drive.

[0015] Furthermore, it also includes a front-end integrated housing, which is provided with a methanol-water solution containing chamber, a combustion air containing chamber, a hydrogen-containing reforming gas recovery chamber, and a tail gas recovery chamber. The methanol-water solution containing chamber is connected to the main liquid supply interface and the combustion air inlet pipe, the combustion air containing chamber is connected to the combustion air pipe of the vaporization section and the combustion air pipe of the reforming section, the hydrogen-containing reforming gas recovery chamber is connected to the hydrogen-containing reforming gas recovery pipe, and the tail gas recovery chamber is connected to the first tail gas recovery pipe and the second tail gas recovery pipe.

[0016] Furthermore, the vaporization heat exchange unit, the flow splitting component, and the reforming reaction unit constitute a working path, and multiple working paths are provided, which are arranged in parallel. The vaporization channel of each working path is connected to the main liquid supply interface, the first combustion channel of each working path is connected to the combustion feed pipe and the combustion air pipe of the vaporization section, and the second combustion channel of each working path is connected to the combustion air pipe of the reforming section. The reforming channel of each working path is connected to the hydrogen-containing reforming gas recovery pipe, the first combustion channel of each working path is connected to the first tail gas recovery pipe, and the second combustion channel of each working path is connected to the second tail gas recovery pipe. The opening and closing components of each working path are connected to the same opening and closing drive component to synchronously switch the on / off state of the second flow channel in multiple working paths.

[0017] In summary, this application includes at least one of the following beneficial technical effects: 1. To address the problem of poor heating continuity in existing solar-powered methanol reforming hydrogen production devices when sunlight is insufficient or fluctuates, this invention incorporates a vaporization heat exchange unit, a flow divider, a reforming reaction unit, and a photothermal energy storage unit within the same reaction path. This allows the vaporization and reforming channels to receive heat from the external photothermal energy storage unit. Simultaneously, heat is supplemented to the vaporization and reforming channels through a first and a second combustion supplementary channel, respectively. The flow divider controls whether the vaporized methanol water vapor enters the second combustion supplementary channel. Therefore, the device can primarily utilize photothermal heating when sunlight is abundant, utilize combustion supplementary heating when sunlight is insufficient or absent, and achieve synergistic heating of photothermal and combustion supplementary heating during periods of weak or fluctuating light, thereby improving the continuity of methanol aqueous solution vaporization and methanol water vapor reforming reactions. 2. Addressing the issues of large size, complex piping, and unsuitability for compact layout in existing auxiliary heating structures such as external burners and external heat exchangers, this invention places the first supplementary combustion channel inside the first outer pipe and the second supplementary combustion channel inside the second outer pipe, directly integrating the supplementary combustion heating structure within the vaporization heat exchange unit and the reforming reaction unit. This eliminates the need for a separate large auxiliary heating structure outside the reaction piping, allowing heat exchange and supply to the outer vaporization and reforming channels via the inner supplementary combustion channel. This shortens the heat transfer path, improves heat utilization efficiency, and reduces the overall space required for the unit. 3. To address the issue of reaction temperature fluctuations caused by weather and environmental factors in solar heating, this invention incorporates a heat storage layer on the outer sides of the first and second outer pipes. A trough-type concentrator concentrates heat into the heat storage layer, allowing solar energy to be stored before being released into the vaporization and reforming channels. Consequently, when solar intensity fluctuates briefly, the heat storage layer buffers the heating changes, reducing temperature fluctuations in the vaporization and reforming sections, lowering the risk of methanol water vapor condensation during flow, and helping to maintain the reforming reaction temperature environment. 4. To address the issue of easy mixing between afterburner exhaust gas and hydrogen-containing reformed gas, which affects subsequent recovery and safety, this invention isolates the first afterburner channel from the vaporization channel through the wall of the first inner tube, and isolates the second afterburner channel from the reforming channel through the wall of the second inner tube. The reforming channel is connected to the hydrogen-containing reformed gas recovery pipe, and the second afterburner channel is connected to the exhaust gas recovery pipe. Thus, the afterburner gas and hydrogen-containing reformed gas remain physically isolated during flow, achieving both afterburner heat exchange and separate recovery of hydrogen-containing reformed gas and afterburner exhaust gas, improving gas path safety and recovery reliability. 5. To address the issue of poor consistency in feeding, afterburning, and valve-controlled switching when multiple reaction paths are connected in parallel, this invention centrally integrates a methanol-water solution containment chamber, an afterburning air containment chamber, a hydrogen-containing reformed gas recovery chamber, and a tail gas recovery chamber within a front-end integrated housing. Simultaneous switching of multiple paths is achieved through multiple parallel operating paths, multiple opening and closing components, and a single linkage drive component. This improves the integration and modular scalability of the device, ensuring consistent feeding, afterburning, and recovery states across multiple reaction paths under varying lighting conditions, facilitating installation and use in ships, mobile energy sources, or other space-constrained environments. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall appearance structure of an embodiment of this application.

[0020] Figure 2 This is a schematic diagram of the overall structure after removing the light-transmitting protective plate in an embodiment of this application.

[0021] Figure 3 This is a schematic diagram of the overall structure from another perspective of the embodiments of this application.

[0022] Figure 4This is a schematic diagram of the layout structure of the front-end integrated box, the pipeline installation area and the electrical installation area in the embodiments of this application.

[0023] Figure 5 This is a schematic diagram of the structure in which multiple working paths are arranged in parallel in an embodiment of this application.

[0024] Figure 6 This is a schematic diagram of the combined structure of the vaporization heat exchange unit, the photothermal energy storage unit, and the trough-type concentrator in the embodiments of this application.

[0025] Figure 7 This is a schematic diagram of the combined structure of the reforming reaction unit, the recovery unit, and the trough-type concentrator in the embodiments of this application.

[0026] Figure 8 This is a schematic diagram of the linkage structure between the diversion component and the opening / closing component in an embodiment of this application.

[0027] Figure 9 This is a three-dimensional structural diagram of the diversion component in the embodiments of this application.

[0028] Figure 10 This is a structural schematic diagram of the diversion component from another perspective in the embodiments of this application.

[0029] Figure 11 This is a schematic diagram of the overall cross-sectional position of the working path in the embodiments of this application.

[0030] Figure 12 yes Figure 11 An enlarged schematic diagram of part A in the middle.

[0031] Figure 13 yes Figure 11 Enlarged diagram of part B.

[0032] Figure 14 yes Figure 11 An enlarged schematic diagram of section C.

[0033] Reference numerals: 1. Support base; 11. Light-transmitting protective plate; 12. Light detection component; 13. Inspection hatch; 14. Parallel connector; 15. Fastener; 16. Front-end fixing plate; 17. Partition plate; 18. Power supply component; 2. Vaporization heat exchange unit; 21. First outer pipe; 22. First inner pipe; 221. Afterburner inlet; 222. First afterburner air inlet; 223. First exhaust outlet; 3. Diversion component; 31. Diversion plate; 311. First flow channel; 312. Second flow channel; 313. Valve groove; 32. Opening and closing component; 33. Opening and closing drive component; 4. Reforming reaction unit; 41. Second outer pipe; 42. Second inner pipe; 421. Second supplementary combustion air inlet; 422. Second exhaust outlet; 5. Photothermal energy storage unit; 51. First heat storage section; 52. Second heat storage section; 53. Trough-type concentrator; 6. Front-end integrated housing; 61. Methanol aqueous solution containment chamber; 62. Supplementary combustion air containment chamber; 63. Hydrogen-containing reformed gas recovery chamber; 64. Tail gas recovery chamber; 7. Recovery unit; 71. First tail gas recovery pipe; 72. Second tail gas recovery pipe; 73. Hydrogen-containing reformed gas recovery pipe; 8. Feeding unit; 81. Supplementary combustion feed pipe; 82. Vaporization section supplementary combustion air pipe; 83. Reforming section supplementary combustion air pipe; 84. Heater. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, 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 creative effort are within the scope of protection of this invention.

[0035] This application discloses a photothermal combustion synergistic methanol reforming hydrogen production device. For example... Figures 1 to 3 As shown, the solar thermal combustion co-firing methanol reforming hydrogen production unit has a flat, box-like structure, suitable for installation on ship decks, hull tops, mobile energy platforms, or other areas with sunlight. The unit includes a support base 1, a light-transmitting protective plate 11, a front-end fixing plate 16, a maintenance hatch 13, parallel connectors 14, fasteners 15, and partitions 17. The support base 1 serves as the basic load-bearing component of the entire unit. The vaporization heat exchange unit 2, the flow distribution component 3, the reforming reaction unit 4, the solar thermal energy storage unit 5, the recovery unit 7, and the feeding unit 8 can all be directly or indirectly mounted on the support base 1. The support base 1 can be a rectangular plate, a channel-shaped plate, or a plate with a reinforced frame structure to improve the installation stability of the unit in moving or vibrating environments.

[0036] Specifically, such as Figure 1As shown, a light-transmitting protective plate 11 is connected above the support base 1, covering the vaporization heat exchange unit 2, the flow distribution component 3, the reforming reaction unit 4, and the photothermal energy storage unit 5. The light-transmitting protective plate 11 can be a flat transparent plate, a curved transparent plate, or a transparent cover with a frame. On the one hand, it allows sunlight to enter the device, enabling the photothermal energy storage unit 5 to receive solar energy; on the other hand, it blocks water mist, dust, or external foreign objects from entering the internal piping area, thereby improving the protection and reliability of the internal reaction piping. The light-transmitting protective plate 11 can be fixed to the support base 1 by fasteners 15, which can be screws, bolts, clips, or other detachable connectors for easy maintenance and replacement.

[0037] Furthermore, the maintenance door 13 is located on the side or end of the support base 1. The maintenance door 13 can be a rectangular plate, a flip-up door, or a pull-out door, used for opening to inspect and replace internal electrical components, valves, pipeline interfaces, or power supply components 18. Parallel connectors 14 are located on the side of the support base 1. The parallel connectors 14 can be ear-shaped, hinge-shaped, or connectors with mounting holes, used to connect or arrange multiple solar thermal combustion co-firing methanol reforming hydrogen production units in parallel. This allows for increasing or decreasing the number of units according to hydrogen production requirements, improving the modular expansion capability of the unit.

[0038] like Figures 2 to 4 As shown, after the light-transmitting protective plate 11 is removed, the internal arrangement on the support base 1 can be seen. A partition 17 is disposed on the support base 1 and located on the side of the vaporization heat exchange unit 2 and the reforming reaction unit 4. The partition 17 extends along the length of the device, effectively separating the piping installation area and the electrical installation area on the support base 1. The vaporization heat exchange unit 2, the flow divider 3, the reforming reaction unit 4, and the photothermal energy storage unit 5 are mainly located in the piping installation area, while the controller, power supply component 18, the opening and closing drive component 33, or related electrical connection structures can be located in the electrical installation area. Separating the piping installation area and the electrical installation area by the partition 17 reduces the impact of high-temperature piping, afterburner exhaust gas, or hydrogen-containing reforming gas on electrical components, improving the overall operational safety.

[0039] Furthermore, such as Figure 4As shown, the front-end integrated housing 6 is located at one end of the supporting base 1. The front-end integrated housing 6 can be a cuboid box structure or a combined housing composed of multiple parallel chambers. The front-end integrated housing 6 contains a methanol-water solution containing chamber 61, a combustion air containing chamber 62, a hydrogen-containing reformed gas recovery chamber 63, and a tail gas recovery chamber 64. The methanol-water solution containing chamber 61 stores or temporarily stores the methanol-water solution and supplies it to the vaporization channel and the first combustion channel; the combustion air containing chamber 62 stores or distributes combustion air and supplies it to the first and second combustion channels; the hydrogen-containing reformed gas recovery chamber 63 receives the hydrogen-containing reformed gas generated in the reforming channel; and the tail gas recovery chamber 64 receives the combustion tail gas generated in the first and second combustion channels. Therefore, the front-end integrated housing 6 combines raw material supply and product recovery functions, resulting in higher pipeline concentration and easier installation and maintenance.

[0040] like Figure 5 As shown, the vaporization heat exchange unit 2, the flow splitter 3, and the reforming reaction unit 4 constitute a working path. Multiple working paths can be configured, arranged in parallel along the width of the support base 1. Each working path includes the vaporization heat exchange unit 2, the flow splitter 3, and the reforming reaction unit 4 arranged sequentially. Multiple working paths share or are separately connected to the feed unit 8 and the recovery unit 7 to achieve simultaneous vaporization, reforming, and recovery across multiple channels. By arranging multiple working paths in parallel, the hydrogen production capacity within a single unit can be increased, while maintaining the pipe diameter and length of each working path within a suitable range for heat exchange and reaction.

[0041] Specifically, such as Figure 5 and Figure 6 As shown, the vaporization heat exchange unit 2 includes a first outer tube 21 and a first inner tube 22. The first outer tube 21 is a hollow tubular structure extending along the length of the working path. The first inner tube 22 is disposed inside the first outer tube 21 and also extends along the length of the first outer tube 21. The first outer tube 21 and the first inner tube 22 can be coaxially arranged or approximately coaxially arranged; an annular or approximately annular vaporization channel is formed between the first inner tube 22 and the first outer tube 21. The vaporization channel is used to receive methanol aqueous solution and vaporize the methanol aqueous solution into methanol water vapor after absorbing external light and heat and internal combustion heat. A first combustion channel is formed inside the first inner tube 22. The first combustion channel is used to receive methanol aqueous solution and combustion air for combustion and supplement heat to the vaporization channel through the combustion reaction.

[0042] Furthermore, such as Figure 6As shown, the solar thermal energy storage unit 5 is disposed on the outside of the first outer tube 21. The solar thermal energy storage unit 5 includes a first heat storage section 51 and a trough-type concentrator 53. The first heat storage section 51 is disposed on or attached to the outside of the first outer tube 21. The first heat storage section 51 can be a tubular, semi-enclosed, arc-shaped enclosed, or block-shaped heat storage structure. The first heat storage section 51 is used to absorb and store the solar heat collected by the trough-type concentrator 53 and transfer the heat to the vaporization channel through the first outer tube 21. The trough-type concentrator 53 is disposed below or to the side of the first heat storage section 51 and extends along the length direction of the first heat storage section 51. The trough-type concentrator 53 can be a trough-shaped reflector, an arc-shaped concentrator, or a linear concentrator. Its heat-gathering area is arranged corresponding to the first heat storage section 51 within the range of the first heat storage section 51, so that solar energy can be concentrated on the first heat storage section 51. Therefore, the vaporization channel can obtain solar thermal heat from the outside, reducing the reliance on supplementary combustion heating when there is sufficient sunlight.

[0043] like Figure 7 As shown, the reforming reaction unit 4 includes a second outer tube 41 and a second inner tube 42. The second outer tube 41 is a hollow tubular structure extending along the length of the working path. The second inner tube 42 is disposed inside the second outer tube 41 and also extends along the length of the second outer tube 41. A reforming channel is formed between the second outer tube 41 and the second inner tube 42. The reforming channel is used to receive methanol water vapor output from the vaporization channel and carry out methanol water vapor reforming reaction under the action of the catalyst bed to generate hydrogen-containing reformed gas. The catalyst bed is disposed in the reforming channel and can be arranged to fill along the length of the reforming channel or to be arranged in sections by means of a multi-section catalyst filling structure to improve the contact between methanol water vapor and the catalyst. A second combustion channel is formed inside the second inner tube 42. The second combustion channel is used to receive methanol water vapor and combustion air when combustion heating is required, and to supplement heat to the reforming channel through the combustion reaction.

[0044] Furthermore, the solar thermal energy storage unit 5 also includes a second heat storage section 52. The second heat storage section 52 is disposed on the outside of the second outer tube 41 and corresponds to the heat-gathering area of ​​the trough concentrator 53. The second heat storage section 52 can be a tubular heat storage layer, a semi-covered heat storage layer, or a heat storage block covering the outside of the second outer tube 41. The heat-gathering area of ​​the trough concentrator 53 is arranged within the range of the second heat storage section 52, corresponding to the second heat storage section 52. After absorbing the solar heat collected by the trough concentrator 53, the second heat storage section 52 releases heat to the reforming channel through the second outer tube 41, enabling the reforming channel to maintain the temperature environment required for the methanol water vapor reforming reaction. The first heat storage section 51 and the second heat storage section 52 can be arranged alternately, or they can be arranged continuously or nearly continuously in the direction from the vaporization heat exchange unit 2 to the reforming reaction unit 4, so as to reduce the heat dissipation point between the vaporization heat exchange unit 2 and the reforming reaction unit 4 and reduce the temperature fluctuation of methanol water vapor during the flow process.

[0045] In addition, such as Figure 7 As shown, the feeding unit 8 includes a vaporization section afterburner air pipe 82, a reforming section afterburner air pipe 83, and a heater 84. The heater 84 can be installed in the air inlet paths of the vaporization section afterburner air pipe 82 and the reforming section afterburner air pipe 83 to preheat the afterburner air during afterburner startup. The vaporization section afterburner air pipe 82 is connected to the first afterburner channel, and the reforming section afterburner air pipe 83 is connected to the second afterburner channel. Preheating the afterburner air can improve the afterburner reaction startup speed, reduce the cooling effect of the low-temperature afterburner air on the first and second afterburner channels, and facilitate rapid afterburner heating in the absence of light or under low light conditions.

[0046] like Figures 8 to 10 As shown, the flow divider 3 is disposed between the vaporization heat exchange unit 2 and the reforming reaction unit 4. The flow divider 3 includes a flow divider plate 31, an opening / closing element 32, and an opening / closing drive element 33. The flow divider plate 31 can be disc-shaped, plate-shaped, or a block structure adapted to the end of the pipeline. The flow divider plate 31 has an inlet side and an outlet side. The inlet side is corresponding to the outlet end of the vaporization channel, and the outlet side is corresponding to the reforming channel and the second afterburning channel. The flow divider plate 31 is provided with a first flow channel 311 and a second flow channel 312. The first flow channel 311 penetrates the flow divider plate 31 and connects the vaporization channel and the reforming channel, allowing the vaporized methanol water vapor to enter the reforming channel for catalytic reforming. The second flow channel 312 penetrates the flow divider plate 31 and connects the vaporization channel and the second afterburning channel, allowing the vaporized methanol water vapor to enter the second afterburning channel to participate in afterburning heat supply when the second flow channel 312 is opened.

[0047] Specifically, both the first flow channel 311 and the second flow channel 312 can be expanding flow channels with an increased cross-sectional area along the direction from the inlet side to the outlet side. That is, the cross-sectional area of ​​the first flow channel 311 and the second flow channel 312 is smaller on the side closer to the vaporization channel, and larger on the side closer to the reforming channel or the second afterburning channel. This expanding flow channel structure reduces local resistance when methanol vapor enters the reforming channel or the second afterburning channel from the vaporization channel, and to some extent reduces the possibility of high-speed airflow directly impacting subsequent pipelines or the catalyst bed, thus improving the stability of airflow distribution.

[0048] Furthermore, the opening / closing element 32 is movably disposed on the diversion plate body 31. The opening / closing element 32 can be a valve plate, a sliding plate, a slide plate, a rotary valve plate, or other structures capable of blocking and avoiding the second flow channel 312. In this embodiment, the opening / closing element 32 is preferably a valve plate. A valve groove 313 is provided on the diversion plate body 31, which communicates with the second flow channel 312, and the valve plate is inserted into the valve groove 313. The valve plate can move between a closed position and an open position. When the valve plate is in the closed position, the valve plate blocks the second flow channel 312, preventing the vaporized methanol water vapor from entering the second combustion channel, but instead allowing it to enter the reforming channel through the first flow channel 311; when the valve plate is in the open position, the valve plate avoids the second flow channel 312, allowing part of the vaporized methanol water vapor to enter the reforming channel through the first flow channel 311, and the other part to enter the second combustion channel through the second flow channel 312 to participate in combustion and heating. Therefore, the diversion component 3 can structurally switch between the reforming gas supply path and the supplementary combustion gas supply path.

[0049] Furthermore, the opening / closing drive 33 is connected to the opening / closing element 32 via a transmission connection. The opening / closing drive 33 can be a motor, linear actuator, electromagnetic actuator, gear and rack drive mechanism, or linkage drive mechanism, used to drive the opening / closing element 32 to move between the open and closed positions. When multiple working paths are arranged in parallel, multiple opening / closing elements 32 in multiple working paths can be connected to the same opening / closing drive 33, and the synchronous opening or closing of multiple second flow channels 312 can be achieved through the same opening / closing drive 33. Thus, multiple working paths can maintain a consistent combustion switching state under the same illumination conditions, avoiding inconsistencies in heating states between different working paths.

[0050] like Figures 11 to 14 As shown, Figure 11 The overall sectioning location of the working path is shown. Figure 12 , Figure 13 and Figure 14 The internal connectivity relationships at different local locations are shown respectively. For example... Figure 12 As shown, the first inner tube 22 has a combustion liquid inlet 221, a combustion air inlet 222, and a first exhaust outlet 223. The combustion liquid inlet 221 is connected to the first combustion channel and is used to input the combustion liquid methanol solution for combustion into the first combustion channel; the first combustion air inlet 222 is connected to the first combustion channel and is used to input combustion air into the first combustion channel; the first exhaust outlet 223 is connected to the first combustion channel and is used to discharge the combustion exhaust gas generated in the first combustion channel. The first combustion channel is heat-isolated from the vaporization channel through the wall of the first inner tube 22. That is, the combustion gas in the first combustion channel and the methanol solution in the vaporization channel do not mix directly; the two only transfer heat through the wall of the first inner tube 22. Thus, while achieving combustion heating, it is possible to prevent the combustion exhaust gas from entering the vaporization channel.

[0051] Furthermore, the feeding unit 8 also includes a main liquid supply interface and a combustion supplementary feed pipe 81. The main liquid supply interface is connected to the vaporization channel via the first flow channel 311 and is used to input methanol-water solution into the vaporization channel. The combustion supplementary feed pipe 81 is connected to the combustion supplementary liquid inlet 221 and is used to input the combustion supplementary methanol-water solution into the first combustion supplementary channel. The combustion supplementary air pipe 82 of the vaporization section is connected to the first combustion supplementary air inlet 222 via the heater 84, so that the combustion supplementary air entering the first combustion supplementary channel can be preheated before entering. Thus, when there is insufficient sunlight or no light, the first combustion supplementary channel can carry out a combustion supplementary reaction through the combustion supplementary methanol-water solution and the preheated combustion supplementary air, and transfer heat to the vaporization channel through the pipe wall of the first inner pipe 22, so that the methanol-water solution in the vaporization channel continues to vaporize.

[0052] like Figure 13 As shown, the second inner tube 42 has a second afterburning air inlet 421, and a reforming channel is formed between the second outer tube 41 and the second inner tube 42. The catalyst bed is disposed in the reforming channel. The reforming channel receives methanol water vapor entering through the first flow channel 311. The methanol water vapor undergoes a reforming reaction under the action of the catalyst bed to generate hydrogen-containing reformed gas. The second afterburning air inlet 421 is connected to the second afterburning channel and is used to input afterburning air into the second afterburning channel. The reforming section afterburning air pipe 83 is connected to the second afterburning air inlet 421 through a heater 84, so that the afterburning air entering the second afterburning channel is preheated before entering. When the opening and closing element 32 opens the second flow channel 312, the vaporized methanol water vapor can enter the second afterburning channel through the second flow channel 312 and undergo an afterburning reaction with the preheated afterburning air in the second afterburning channel. The second afterburning channel is heat-isolated from the reforming channel through the wall of the second inner tube 42, so that the afterburning exhaust gas and the hydrogen-containing reforming gas do not mix directly, while the heat generated by the afterburning can be transferred to the reforming channel through the wall of the second inner tube 42.

[0053] Furthermore, to ensure reliable ignition of the combustible mixture in the first and second afterburning channels, this embodiment may also include an ignition element. The ignition element can be located inside the first inner tube 22, the second inner tube 42, at the first afterburning air inlet 222, or at the second afterburning air inlet 421. The ignition element is used to ignite the combustible mixture formed by methanol vapor and afterburning air in the afterburning channel during afterburning initiation. Specifically, in the first afterburning channel, the methanol-water solution for afterburning enters the first inner tube 22 through the afterburning liquid inlet 221, and forms methanol vapor under the preheating effect of the heater 84 and the internal temperature of the first inner tube 22. The afterburning air enters the first afterburning channel through the vaporization section afterburning air pipe 82, the heater 84, and the first afterburning air inlet 222. The ignition element ignites the combustible mixture formed by the methanol vapor and afterburning air, allowing the first afterburning channel to supplement heat to the vaporization channel through the pipe wall of the first inner tube 22. In the second afterburning channel, vaporized methanol water vapor enters the second inner tube 42 through the second flow channel 312. Afterburning air enters the second afterburning channel through the reforming section afterburning air pipe 83, heater 84, and second afterburning air inlet 421. An ignition element ignites the combustible mixture formed by the methanol water vapor and afterburning air, allowing the second afterburning channel to supplement heat to the reforming channel through the wall of the second inner tube 42. The ignition element can be an electric spark ignition element, an electric heating wire ignition element, a ceramic ignition element, or other ignition structures capable of providing ignition energy. In alternative embodiments, the heater 84 can also be an ignition heating element that combines preheating and ignition functions. This avoids the problem of unclear ignition processes caused by relying solely on afterburning air preheating, improving the reliability of afterburning start-up.

[0054] In addition, such as Figure 13 As shown, the first exhaust gas recovery pipe 71 is connected to the exhaust end of the first afterburning channel. The afterburning exhaust gas generated in the first afterburning channel is discharged through the first exhaust outlet 223 and then enters the first exhaust gas recovery pipe 71. The first exhaust gas recovery pipe 71 can be a tubular structure arranged laterally or longitudinally along the working path, or it can be a collecting pipe connected to the exhaust ends of multiple first afterburning channels. By independently recovering the exhaust gas generated in the first afterburning channel through the first exhaust gas recovery pipe 71, it is possible to prevent the afterburning exhaust gas from the vaporization section from entering the vaporization channel or the reforming channel, thereby improving the safety of the gas path.

[0055] like Figure 14As shown, the second inner pipe 42 also has a second exhaust outlet 422, which is connected to the second afterburning channel and used to discharge the afterburning exhaust gas generated in the second afterburning channel. The second exhaust gas recovery pipe 72 is connected to the exhaust end of the second afterburning channel, and the afterburning exhaust gas generated in the second afterburning channel enters the second exhaust gas recovery pipe 72 through the second exhaust outlet 422. The hydrogen-containing reforming gas recovery pipe 73 is connected to the reforming channel, and the hydrogen-containing reforming gas generated in the reforming channel enters the hydrogen-containing reforming gas recovery pipe 73. Thus, the hydrogen-containing reforming gas, the first afterburning exhaust gas, and the second afterburning exhaust gas are recovered through different pipelines, avoiding the mixing of reforming products and afterburning exhaust gas, which is beneficial for subsequent purification, storage, or utilization.

[0056] Furthermore, the first tail gas recovery pipe 71, the second tail gas recovery pipe 72, and the hydrogen-containing reformed gas recovery pipe 73 all belong to the recovery unit 7. The first tail gas recovery pipe 71 can be connected to the tail gas recovery chamber 64, the second tail gas recovery pipe 72 can also be connected to the tail gas recovery chamber 64, and the hydrogen-containing reformed gas recovery pipe 73 is connected to the hydrogen-containing reformed gas recovery chamber 63. The tail gas recovery chamber 64 is used to centrally receive the first and second afterburning tail gases, and the hydrogen-containing reformed gas recovery chamber 63 is used to centrally receive the hydrogen-containing reformed gas generated in the reforming channel. Thus, the front-end integrated housing 6 can serve as both a raw material input end and a gas recovery end, making the overall piping of the device more centralized.

[0057] On the other hand, this embodiment includes a first liquid supply control valve, a second liquid supply control valve, a vaporization section air control valve, a reforming section air control valve, a light detection element 12, a controller, and a power supply element 18. The first liquid supply control valve controls the connection and disconnection between the main liquid supply interface and the vaporization channel. The second liquid supply control valve is located in the afterburner feed pipe 81 and controls whether the methanol-water solution for afterburner enters the first afterburner channel. The vaporization section air control valve is located in the vaporization section afterburner air pipe 82 and controls whether afterburner air enters the first afterburner channel. The reforming section air control valve is located in the reforming section afterburner air pipe 83 and controls whether afterburner air enters the second afterburner channel. The controller is electrically connected to the light detection element 12, the first liquid supply control valve, the second liquid supply control valve, the vaporization section air control valve, the reforming section air control valve, the heater 84, and the opening / closing drive element 33. The power supply element 18 provides electrical energy to the controller, the heater 84, the opening / closing drive element 33, and each control valve.

[0058] Specifically, the light intensity detection element 12 can be positioned on the support base 1 near the light-transmitting protective plate 11, or it can be positioned on the outer surface of the device to detect the external light intensity. The light intensity detection element 12 detects the sunlight intensity and outputs a detection signal to the controller. The controller controls the operation of each control valve, heater 84, and opening / closing actuator 33 based on the detection signal from the light intensity detection element 12. Through this control structure, the device can switch between different heating paths according to the sunlight conditions, improving its adaptability to weather changes and light fluctuations.

[0059] The working process of this application embodiment can include three states: sufficient sunlight, no light, and weak light fluctuation.

[0060] Under sufficient sunlight, the light detection element 12 detects that the external light intensity meets the requirements for photothermal heating. The controller controls the first liquid supply control valve to open, allowing the methanol aqueous solution to enter the vaporization channel through the main liquid supply interface. The controller also controls the second liquid supply control valve, the vaporization section air control valve, and the reforming section air control valve to close, preventing the first and second combustion channels from participating in combustion. Simultaneously, the controller controls the opening and closing drive element 33 to keep the opening and closing element 32 in the closed position, blocking the second flow channel 312. At this time, sunlight enters the device through the light-transmitting protective plate 11 and is collected by the trough-type concentrator 53 to the first heat storage section 51 and the second heat storage section 52. The first heat storage section 51 supplies heat to the vaporization channel, causing the methanol aqueous solution to vaporize and form methanol water vapor. The methanol water vapor enters the reforming channel through the first flow channel 311, where it undergoes a reforming reaction under the action of the catalyst bed, forming hydrogen-containing reformed gas. The hydrogen-containing reformed gas enters the hydrogen-containing reformed gas recovery chamber 63 through the hydrogen-containing reformed gas recovery pipe 73. Therefore, the device mainly relies on the outer solar thermal energy storage unit 5 to complete the vaporization and reforming heating, reducing the consumption of supplementary combustion.

[0061] In the absence of light, the light detection element 12 detects that the external light intensity is insufficient to maintain photothermal heating. The controller controls the first liquid supply control valve to open, allowing the methanol-water solution to enter the vaporization channel. The controller also controls the second liquid supply control valve and the vaporization section air control valve to open, allowing the methanol-water solution for afterburning and the afterburning air preheated by the heater 84 to enter the first afterburning channel. The controller also controls the reforming section air control valve to open and controls the opening and closing drive element 33 to put the opening and closing element 32 in the open position, opening the second flow channel 312. At this time, an afterburning reaction occurs in the first afterburning channel and heats the vaporization channel, ensuring that the methanol-water solution can continuously vaporize. Part of the vaporized methanol-water vapor enters the reforming channel through the first flow channel 311 for reforming reaction, and the other part enters the second afterburning channel through the second flow channel 312, where it undergoes an afterburning reaction with the afterburning air preheated by the heater 84, supplying heat to the reforming channel. The afterburning exhaust gas generated in the first afterburning channel enters the exhaust gas recovery chamber 64 through the first exhaust gas recovery pipe 71, the afterburning exhaust gas generated in the second afterburning channel enters the exhaust gas recovery chamber 64 through the second exhaust gas recovery pipe 72, and the hydrogen-containing reforming gas generated in the reforming channel enters the hydrogen-containing reforming gas recovery chamber 63 through the hydrogen-containing reforming gas recovery pipe 73. Thus, the device can maintain the temperature required for vaporization and reforming reactions by relying on the inner afterburning channel under light-free conditions.

[0062] Under low light fluctuation conditions, the light detection element 12 detects that the external light intensity is lower than the stable solar thermal heating requirement but there is still a certain amount of solar energy input. The controller can control the opening of the first liquid supply control valve and control the operation of the second liquid supply control valve, the vaporization section air control valve, the reforming section air control valve, the heater 84, and the opening and closing drive element 33 according to the light intensity. At this time, the first heat storage section 51 and the second heat storage section 52 can still receive the solar energy collected by the trough concentrator 53 and release heat to the vaporization channel and the reforming channel; the first and second supplementary combustion channels provide supplementary combustion heat as needed. Thus, the device can form a state of coordinated operation between external solar thermal heating and internal supplementary combustion heating, reducing the impact of solar light fluctuations on the vaporization temperature and the reforming temperature.

[0063] Preferably, when multiple working paths are connected in parallel, the vaporization channel of each working path is connected to the main liquid supply interface, the first combustion channel of each working path is connected to the combustion feed pipe 81 and the combustion air pipe 82 of the vaporization section, and the second combustion channel of each working path is connected to the combustion air pipe 83 of the reforming section. The reforming channel of each working path is connected to the hydrogen-containing reformed gas recovery pipe 73, the first combustion channel of each working path is connected to the first tail gas recovery pipe 71, and the second combustion channel of each working path is connected to the second tail gas recovery pipe 72. The opening and closing components 32 of each working path are connected to the same opening and closing drive component 33 to synchronously switch the on / off state of the second flow channel 312 in multiple working paths. Thus, multiple working paths can maintain a unified feeding, combustion, diversion, and recovery state, avoiding the problem of inconsistent heating modes between different working paths.

[0064] In alternative embodiments, the trough-type concentrator 53 can be replaced with a linear concentrator, an arc-shaped reflective concentrator, or other solar thermal collection structures capable of concentrating solar energy onto the thermal storage layer. The first thermal storage section 51 and the second thermal storage section 52 can employ phase change thermal storage materials, sensible thermal storage materials, or composite thermal storage materials. The heater 84 can be an electric heater 84, a tubular heater 84, or other heating structures capable of preheating the combustion air. The opening and closing element 32 can be a valve plate, a slide valve, a slide valve, or a rotary valve, as long as it can block the second flow channel 312 in the closed state and open the second flow channel 312 in the open state. The above substitutions do not change the basic concept of this application of achieving methanol reforming to produce hydrogen through external solar thermal heating, internal combustion heating, diversion switching, and branch recovery.

[0065] The implementation principle of the photovoltaic-thermal combustion-assisted methanol reforming hydrogen production device according to an embodiment of this application is as follows: By setting inner and outer pipe structures in the vaporization heat exchange unit 2 and the reforming reaction unit 4, the first outer pipe 21 and the second outer pipe 41 respectively form a vaporization channel and a reforming channel, and the first inner pipe 22 and the second inner pipe 42 respectively form a first combustion-assisted channel and a second combustion-assisted channel; by setting a photovoltaic energy storage unit 5 outside the first outer pipe 21 and the second outer pipe 41, the vaporization channel and the reforming channel can receive photovoltaic heat from the outside; by using a flow divider 3 and an opening / closing component 32 to control whether the vaporized methanol water vapor enters the second combustion-assisted channel, the device can switch between photovoltaic heating, combustion-assisted heating, and assisted heating; by using a hydrogen-containing reformed gas recovery pipe 73, a first tail gas recovery pipe 71, and a second tail gas recovery pipe 72 to recover hydrogen-containing reformed gas and two combustion-assisted tail gases respectively, ensuring that different gas flow paths are isolated from each other. Therefore, this application can improve heating stability and gas recovery safety within a compact structure.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A photothermal combustion co-processing methanol reforming hydrogen production device, characterized in that, It includes a vaporization heat exchange unit, a flow distribution component and a reforming reaction unit arranged in sequence, as well as a photothermal energy storage unit and a recovery unit; The vaporization heat exchange unit includes a first outer tube and a first inner tube disposed inside the first outer tube. A vaporization channel for the vaporization of methanol aqueous solution is formed inside the first outer tube, and a first combustion channel is formed inside the first inner tube. The reforming reaction unit includes a second outer tube and a second inner tube disposed inside the second outer tube. A reforming channel for methanol steam reforming to produce hydrogen is formed inside the second outer tube. A catalyst bed is provided inside the reforming channel. A second combustion supplement channel is formed inside the second inner tube. The solar thermal energy storage unit is located outside the first outer tube and the second outer tube, and is used to supply heat to the vaporization channel and the reforming channel; The diversion component has a first flow channel connecting the vaporization channel and the reforming channel, and a second flow channel connecting the vaporization channel and the second afterburning channel. The second flow channel is provided with an opening and closing element. The opening and closing element is used to block the second flow channel in the closed state, so that the vaporized methanol water vapor enters the reforming channel through the first flow channel, and is used to open the second flow channel in the open state, so that the vaporized methanol water vapor enters the reforming channel through the first flow channel and enters the second afterburning channel through the second flow channel. The recovery unit includes a hydrogen-containing reforming gas recovery pipe connected to the reforming channel, a first exhaust gas recovery pipe connected to the exhaust end of the first afterburning channel, and a second exhaust gas recovery pipe connected to the exhaust end of the second afterburning channel.

2. The photovoltaic-thermal combustion co-processing methanol reforming hydrogen production device according to claim 1, characterized in that, It also includes a support base, a light-transmitting protective plate, and a partition. The vaporization heat exchange unit, the flow distribution component, the reforming reaction unit, and the photothermal energy storage unit are all disposed on the support base. The light-transmitting protective plate is connected to the support base and covers the vaporization heat exchange unit, the flow distribution component, the reforming reaction unit, and the photothermal energy storage unit. The partition is disposed on the support base and located on the side of the vaporization heat exchange unit and the reforming reaction unit to separate the pipeline installation area and the electrical installation area on the support base.

3. The photothermal combustion co-processing methanol reforming hydrogen production device according to claim 1, characterized in that, The solar thermal energy storage unit includes a thermal storage layer and a trough-type concentrator. The thermal storage layer includes a first thermal storage section disposed outside the first outer tube and a second thermal storage section disposed outside the second outer tube. The trough-type concentrator extends along the direction from the first thermal storage section to the second thermal storage section, and both the first thermal storage section and the second thermal storage section are located within the thermal concentrating area of ​​the trough-type concentrator.

4. The photovoltaic-thermal combustion co-processing methanol reforming hydrogen production device according to claim 1, characterized in that, The first inner tube has a combustion liquid inlet, a combustion air inlet and a first exhaust outlet that are connected to the first combustion channel. The combustion liquid inlet is used to input a methanol aqueous solution for combustion into the first combustion channel. The first combustion air inlet is used to input combustion air into the first combustion channel. The first exhaust outlet is used to discharge the combustion exhaust gas generated in the first combustion channel. The second inner tube has a second combustion air inlet and a second exhaust outlet that are connected to the second combustion channel. The second combustion air inlet is used to input combustion air into the second combustion channel, and the second exhaust outlet is used to discharge the combustion exhaust gas generated in the second combustion channel. The first combustion channel is heat-isolated from the vaporization channel through the wall of the first inner tube, and the second combustion channel is heat-isolated from the reforming channel through the wall of the second inner tube.

5. The photovoltaic-thermal combustion co-processing methanol reforming hydrogen production device according to claim 1, characterized in that, The flow divider includes a flow divider plate disposed between the vaporization heat exchange unit and the reforming reaction unit. The flow divider plate has an inlet side and an outlet side, with the inlet side corresponding to the outlet end of the vaporization channel. The first flow channel and the second flow channel both penetrate the flow divider plate. The outlet end of the first flow channel is connected to the reforming channel, and the outlet end of the second flow channel is connected to the second afterburning channel. Both the first flow channel and the second flow channel are expanding flow channels with an increased cross-sectional area along the direction from the inlet side to the outlet side.

6. The photovoltaic-thermal combustion co-processing methanol reforming hydrogen production device according to claim 5, characterized in that, The opening and closing component includes a valve plate movably disposed on the diversion plate body. The diversion plate body is provided with a valve groove communicating with the second flow channel. The valve plate is inserted into the valve groove and can move between a closed position that blocks the second flow channel and an open position that avoids the second flow channel.

7. The photovoltaic-thermal combustion co-processing methanol reforming hydrogen production device according to claim 1, characterized in that, It also includes a feeding unit, which comprises a main liquid supply interface, a combustion supplementary feed pipe, a vaporization section combustion supplementary air pipe, a reforming section combustion supplementary air pipe, and a heater. The main liquid supply interface is connected to the vaporization channel and is used to input methanol-water solution into the vaporization channel. The combustion supplementary feed pipe is connected to the combustion supplementary liquid inlet and is used to input methanol-water solution for combustion supplementation into the first combustion supplementary channel. The vaporization section combustion supplementary air pipe is connected to the first combustion supplementary air inlet via the heater, and the reforming section combustion supplementary air pipe is connected to the second combustion supplementary air inlet via the heater, so that the combustion supplementary air is preheated before entering the first combustion supplementary channel and the second combustion supplementary channel respectively.

8. The photovoltaic-thermal combustion co-processing methanol reforming hydrogen production device according to claim 7, characterized in that, It also includes a first liquid supply control valve, a second liquid supply control valve, a vaporization section air control valve, a reforming section air control valve, a light detection device, a controller, and an opening / closing drive. The first liquid supply control valve is used to control the connection and disconnection between the main liquid supply interface and the vaporization channel. The second liquid supply control valve is located in the combustion supplementary feed pipe. The vaporization section air control valve is located in the vaporization section combustion supplementary air pipe, and the reforming section air control valve is located in the reforming section combustion supplementary air pipe. The opening / closing drive is connected to the opening / closing device. The controller is electrically connected to the light detection device, the first liquid supply control valve, the second liquid supply control valve, the vaporization section air control valve, the reforming section air control valve, the heater, and the opening / closing drive.

9. A photothermal combustion co-processing methanol reforming hydrogen production device according to claim 7, characterized in that, It also includes a front-end integrated housing, which is provided with a methanol-water solution containing chamber, a combustion air containing chamber, a hydrogen-containing reforming gas recovery chamber, and a tail gas recovery chamber. The methanol-water solution containing chamber is connected to the main liquid supply interface and the combustion air inlet pipe, the combustion air containing chamber is connected to the combustion air pipe of the vaporization section and the combustion air pipe of the reforming section, the hydrogen-containing reforming gas recovery chamber is connected to the hydrogen-containing reforming gas recovery pipe, and the tail gas recovery chamber is connected to the first tail gas recovery pipe and the second tail gas recovery pipe.

10. A photothermal combustion co-processing methanol reforming hydrogen production apparatus according to any one of claims 7-9, characterized in that, The vaporization heat exchange unit, the flow splitting component, and the reforming reaction unit constitute a working path. Multiple working paths are provided and connected in parallel. The vaporization channel of each working path is connected to the main liquid supply interface. The first combustion channel of each working path is connected to the combustion feed pipe and the combustion air pipe of the vaporization section. The second combustion channel of each working path is connected to the combustion air pipe of the reforming section. The reforming channel of each working path is connected to the hydrogen-containing reforming gas recovery pipe. The first combustion channel of each working path is connected to the first tail gas recovery pipe. The second combustion channel of each working path is connected to the second tail gas recovery pipe. The opening and closing components of each working path are connected to the same opening and closing drive component to synchronously switch the on / off state of the second flow channel in multiple working paths.

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