A hydrogen production device integrating reforming catalyst and heat exchange

Abstract

This invention discloses a hydrogen production device integrating a reforming catalyst and heat exchange, relating to the fields of automotive battery packs, fuel cells, and heat exchange technology. The coating assembly is a hollow structure open at both ends, with a reforming catalyst coated inside. Each of the first and second partitions has at least one vent hole, and both ends of the coating assembly are sealed to the vent holes on the first and second partitions, respectively. A heating chamber B is formed between the first and second partitions and the shell. The first chamber, the second chamber, and the inner cavity of the coating assembly form a reforming chamber A. The first and second chambers are connected to the inner cavity of the coating assembly through vent holes. This invention achieves the goals of simplifying the catalyst loading structure, improving heat exchange efficiency, and enhancing system operational stability by coating the reforming catalyst into the inner cavity of the hollow coating assembly, thereby sealing and isolating the heating chamber and the reforming chamber through the cavity wall of the coating assembly and achieving direct heat exchange.

Description

Technical Field

[0001] This invention relates to the fields of automotive battery packs, fuel cells, and heat exchange technology, and specifically to a hydrogen production device integrating a reforming catalyst and heat exchange. Background Technology

[0002] Hydrogen production technology, as a core component of the clean energy sector, has always had its energy conversion efficiency and system compactness as key considerations for engineering applications. In high-efficiency heating devices based on catalytic combustion heating, fuel gas undergoes flameless combustion on the surface of the catalytic combustion catalyst under specific temperature conditions. This process achieves heat transfer between the high-temperature heat source and the low-temperature medium through a heat exchanger, and can be used to preheat fuel gas, process gas, or heat supply water, thereby significantly improving the system's energy utilization rate. Compared to traditional heating methods, catalytic combustion technology has inherent advantages such as low ignition temperature, high combustion efficiency, and low pollutant emissions, effectively avoiding heat loss and safety hazards caused by high-temperature flames. However, existing technical solutions still have significant limitations in terms of structural integration and catalyst application.

[0003] For example, while patent CN118289709A integrates catalytic combustion, reforming, and CO selective methanation, its tube and coil structure filled with particulate catalysts faces technical bottlenecks in actual operation, including uneven surface temperature distribution, complex catalyst loading processes, and limited heat exchange efficiency. Patent CN114988363A, proposing a CPOX and SR dual-stage catalyst structure, is also based on a particulate catalyst filling mode, primarily targeting natural gas reforming processes. Furthermore, its system startup relies on external high-temperature gas, resulting in a relatively complex overall architecture. More critically, particulate catalysts are susceptible to pulverization and wear due to thermal stress and airflow impact during long-term operation. Even with interception devices such as barriers, there is still a potential risk of catalyst loss and bed blockage due to airflow, severely impacting the long-term stable operation of the unit.

[0004] In reforming hydrogen production processes, the heat of reaction released from the catalytic combustion of hydrocarbon fuels to supply the endothermic reforming reaction is a crucial mode for achieving efficient energy utilization. This heat transfer method avoids irreversible losses during energy conversion and effectively supplements the heat input required for the reforming reaction. However, existing hydrogen production systems generally suffer from problems such as limited functional configuration, large equipment footprint, low energy conversion efficiency, and poor economic benefits. In particular, existing catalytic combustion and reforming reaction systems often employ a split or semi-integrated design, resulting in significant heat loss during transfer. Furthermore, the dispersed arrangement of preheating, heat exchange, and catalytic reaction functional units leads to a loose system structure and lengthy heat and mass transfer paths. In addition, traditional particulate catalyst packing methods not only present problems such as difficult packing and large bed pressure drop, but also catalyst pulverization, wear, and carryover by gas flow during long-term operation are key challenges restricting the reliability of the device. Therefore, how to optimize the structure and integrate functions to ensure uniform temperature distribution in the reaction zone while solving technical problems such as complex catalyst packing, limited heat exchange efficiency, and poor long-term operational stability has become a key area for improving the overall performance of hydrogen production devices. Summary of the Invention

[0005] The purpose of this invention is to provide a hydrogen production device that integrates reforming catalyst and heat exchange. By coating the reforming catalyst into the inner cavity of a hollow coating component, the heating chamber and the reforming chamber are sealed and isolated by the cavity wall of the coating component and direct heat exchange is achieved. This solves the technical problems of complex particulate catalyst loading, uneven bed temperature, low heat exchange efficiency, and easy pulverization and loss of catalyst in the prior art.

[0006] The present invention is achieved through the following technical solution: providing a hydrogen production device integrating reforming catalyst and heat exchange, including a shell, a first partition, a second partition and at least one coating component; The coating component is a hollow structure with openings at both ends. The coating component is set inside the shell, and the inner cavity of the coating component is coated with a reforming catalyst. The first and second partitions are coaxially arranged inside the housing and sealed to the side wall of the housing. Each of the first and second partitions is provided with at least one vent hole. The two ends of the coating assembly are respectively sealed to the vent holes on the first and second partitions. A heating chamber B is formed between the first partition, the second partition, and the shell. The first partition and one end of the shell form a first chamber, and the second partition and the other end of the shell form a second chamber. The first chamber and the second chamber are located at opposite ends of the heating chamber B. The first chamber, the second chamber, and the inner cavity of the coating component form a reforming chamber A. The first chamber and the second chamber are connected to the inner cavity of the coating component through vent holes. The heating chamber B and the reforming chamber A are sealed and isolated by the cavity wall of the coated component, the first partition and the second partition; The heating chamber B is equipped with a high-temperature gas inlet pipe and a high-temperature gas outlet pipe, and the reforming chamber A is equipped with a fuel gas inlet pipe and a reformed gas outlet pipe.

[0007] Optionally, multiple coating components are provided, with gaps between the multiple coating components.

[0008] Optionally, each coating assembly includes multiple module components connected in series and / or in parallel, with adjacent module components being detachably connected.

[0009] Optionally, multiple module components are connected in series, and a baffle is provided between two adjacent module components. The outer edge of the baffle has multiple notches, and the notches and the inner walls of the two adjacent module components form a flow channel to guide the airflow to adhere to the channel wall of the coating component.

[0010] Optionally, the inner cavity of the module component is filled with a first honeycomb carrier, and the outer wall of the module component is wrapped with a second honeycomb carrier. The second honeycomb carrier is coated with a catalytic combustion catalyst by immersion or spraying, and the reforming catalyst is coated on the first honeycomb carrier by immersion or spraying. Both the first and second honeycomb carriers include multiple axially penetrating flow channels, and there are gaps between the second honeycomb carriers of adjacent module components.

[0011] Optionally, it also includes a gas distribution assembly, which includes an annular flow channel and multiple connecting pipes, one end of each connecting pipe being connected to the annular flow channel and the other end being connected to the second chamber, and a fuel gas inlet pipe being connected to the annular flow channel.

[0012] Optionally, the annular flow channel is sleeved on the outer wall of the shell, and the fuel gas inlet pipe is located on the outer side of the shell; The connecting pipe is located inside the housing, and the second partition has multiple connecting holes; The connecting hole is configured to allow the connecting pipe to deliver fuel gas to the second chamber after being sealed to the connecting pipe. The fuel gas is then delivered to the cavity of the coating component through the vent hole on the second partition in the second chamber. After the fuel gas reacts with the reforming catalyst in the cavity of the coating component, it is delivered to the first chamber through the vent hole on the first partition. After reorganization, the vent pipe connects to the first chamber.

[0013] Optionally, the coating component, the vent holes on the first partition, and the vent holes on the first partition are all provided with six, and the vent holes are arranged in a ring array on the first partition and the first partition. A connecting hole is provided between two adjacent vents on the second partition, and the six connecting holes are arranged in a ring array on the second partition. A connecting pipe is provided between two adjacent coating components, and there is a gap between the connecting pipe and the coating component; The second chamber is equipped with a conical guide fluid, which is coaxially arranged with the first partition. The large-diameter end of the conical guide fluid is connected to the first partition, and its small-diameter end is connected to the shell. Both the vent and the connecting hole are arranged around the conical fluid guide.

[0014] Optionally, a tapered conduit is provided in the first chamber. The larger end of the tapered conduit passes through the first partition and is connected to the heating chamber B, while the smaller end is connected to the high-temperature gas inlet pipe. The high-temperature gas outlet pipe is located on the side near the second partition.

[0015] Optionally, it also includes a third partition and a fourth partition disposed between the first partition and the second partition, wherein the third partition is disposed on one side of the first partition and the fourth partition is disposed on one side of the second partition; The outer edges of the third and fourth partitions are sealed to the inner wall of the shell. There is a gap between the first and third partitions, a gap between the second and fourth partitions, and a gap between the third and fourth partitions. The coating component extends through the third and fourth partitions. A flow guide hole is provided in the center of the fourth partition. Both the third and fourth partitions are fitted onto the outside of the second honeycomb carrier.

[0016] Compared with the prior art, the embodiments of the present invention have the following advantages and beneficial effects: 1. The working principle of the hydrogen production device provided in this embodiment of the invention is as follows: High-temperature gas enters the heating chamber B through the high-temperature gas inlet pipe, exchanges heat with the outer wall of the coating component, and is discharged through the high-temperature gas outlet pipe; fuel gas enters the second chamber through the fuel gas inlet pipe, enters the inner cavity of the coating component through the vent holes on the second partition, and undergoes an endothermic reforming reaction under the action of the reforming catalyst. The generated reformed gas enters the first chamber through the vent holes on the first partition and is finally discharged through the reformed gas outlet pipe; since the heating chamber B and the reforming chamber A are sealed and isolated by the cavity wall of the coating component, the first partition and the second partition, the high-temperature gas and the fuel gas flow in their respective independent chambers and conduct heat efficiently through the shared cavity wall of the coating component. This avoids direct mixing of the two gases and achieves direct heat transfer. At the same time, the coating structure replaces the traditional particulate catalyst filling method, eliminating the risks of catalyst pulverization, wear and tear and being carried out by the airflow, making the system structure more compact, the heat and mass transfer path shorter, the energy utilization efficiency higher, and the operation more stable and reliable.

[0017] 2. The embodiments of the present invention achieve a double-layer structure by coating the reforming catalyst in the inner cavity of the coating component and allowing the heating medium to flow on the outer wall of the coating component. This achieves close coupling of endothermic and exothermic reactions within the same component. The heat of reaction is directly transferred through the shared cavity wall, eliminating the heat transfer temperature difference loss and energy conversion links of traditional external heat exchangers, thereby improving the system's energy utilization rate. At the same time, the coated catalyst structure avoids the heat transfer resistance caused by the gaps in the particulate catalyst filling, enhances the radial heat conduction efficiency, and makes the reforming reaction temperature control more precise and stable.

[0018] 3. The apparatus of this invention employs a modular structure, utilizing the parallel arrangement of multiple coating components and the detachable series combination of module components to achieve highly flexible capacity configuration. The number of coating components and the length of module components can be adjusted according to processing scale requirements. Furthermore, the independent replacement capability of individual module components reduces maintenance costs and downtime. Simultaneously, the standardized modular design facilitates mass production and quality control, enabling the apparatus to maintain a compact structure while possessing excellent scalability and economic scalability. Additionally, the catalytic combustion design features segmented catalyst coating, which allows for better control of the heat source gas temperature and maintains continuous temperature uniformity within the reforming chamber.

[0019] 4. In this embodiment of the invention, the third and fourth partitions of the device support the middle section of the coating assembly and form a multi-point constraint structure with the first and second partitions at both ends, suppressing the bending deformation and vibration fatigue of the coating assembly with an excessively large aspect ratio under thermal stress. The guide hole in the center of the fourth partition provides a bypass channel for high-temperature gas, allowing some gas flow to directly enter the second pressure equalization chamber from the flow stabilization chamber, avoiding local overheating caused by gas only passing through the radial flow channel of the second honeycomb carrier. At the same time, the third and fourth partitions are sleeved on the outside of the second honeycomb carrier, allowing high-temperature gas to penetrate the catalytic combustion layer and flow through multiple paths, extending the residence time of the gas flow in the heating chamber, expanding the heat exchange area, and with the uniform distribution of the flow field of the conical guide and the conical duct, the device maintains structural integrity, temperature uniformity, and performance stability during long-term operation, thus extending its service life.

[0020] In general, the embodiments of the present invention provide a hydrogen production device integrating reforming catalyst and heat exchange. By coating the reforming catalyst into the inner cavity of a hollow coating component, the heating chamber and the reforming chamber are sealed and isolated by the cavity wall of the coating component and direct heat exchange is achieved. This simplifies the catalyst loading structure, improves heat exchange efficiency, and enhances the stability of system operation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the external outline structure of a hydrogen production device provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the internal structure of a hydrogen production device provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of a hydrogen production device with the housing partially open, as provided in an embodiment of the present invention. Figure 4 This is a schematic cross-sectional view of the hydrogen production apparatus provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the module component structure provided in the embodiments of the present invention; Figure 6 This is a schematic diagram of a series connection structure of two module components provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the series cross-sectional structure of two modular components provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the baffle structure provided in an embodiment of the present invention; Figure 9 This is a schematic diagram of the third partition structure provided in an embodiment of the present invention; Figure 10 This is a schematic diagram of the second partition structure provided in an embodiment of the present invention; Figure 11 This is a schematic diagram of the fourth partition structure provided in an embodiment of the present invention; Figure 12 This is a schematic diagram of the first partition structure provided in an embodiment of the present invention; Figure 13 This is a schematic diagram of a tapered conduit structure provided in an embodiment of the present invention.

[0023] Figure reference numerals and corresponding component names: 1-Shell, 2-First partition, 3-Second partition, 4-Coating assembly, 5-Ventilation hole, 6-First chamber, 7-Second chamber, 8-High-temperature gas inlet pipe, 9-High-temperature gas outlet pipe, 10-Fuel gas inlet pipe, 11-Reformed outlet pipe, 12-Module assembly, 13-Baffle, 14-Notch, 15-First honeycomb carrier, 16-Second honeycomb carrier, 17-Gas distribution assembly, 18-Annular flow channel, 19-Connecting pipe, 20-Conical guide tube, 21-Connecting hole, 22-Conical guide tube, 23-Third partition, 24-Fourth partition, 25-Guide hole, 27-Temperature detection tube before reforming, 28-Temperature detection tube at the outlet, 29-Temperature detection tube after reforming, 30-Electric heater, 31-Fan, 32-Temperature sensor holder. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] In the description of this invention, it should be noted that the terms "first," "second," "third," etc., are used only for distinguishing descriptions and should not be construed as indicating or implying relative importance. Example

[0028] Combined with reference Figures 1-4As shown, this embodiment of the invention provides a hydrogen production device integrating a reforming catalyst and heat exchange, including a shell 1, a first partition 2, a second partition 3, and at least one coating component 4; the coating component 4 is a hollow structure with openings at both ends, disposed inside the shell 1, and coated with a reforming catalyst in its inner cavity; the first partition 2 and the second partition 3 are coaxially disposed inside the shell 1 and sealed to the side wall of the shell 1, each of the first partition 2 and the second partition 3 having at least one vent hole 5, and both ends of the coating component 4 are sealed to the vent holes 5 on the first partition 2 and the second partition 3 respectively; a space is formed between the first partition 2, the second partition 3, and the shell 1. The heating chamber B has a first chamber 6 formed by the first partition 2 and one end of the shell 1, and a second chamber 7 formed by the second partition 3 and the other end of the shell 1. The first chamber 6 and the second chamber 7 are located at opposite ends of the heating chamber B. The first chamber 6, the second chamber 7, and the inner cavity of the coating component 4 form a reforming chamber A. The first chamber 6 and the second chamber 7 are connected to the inner cavity of the coating component 4 through vent holes 5. The heating chamber B and the reforming chamber A are sealed and isolated by the cavity wall of the coating component 4, the first partition 2, and the second partition 3. The heating chamber B is provided with a high-temperature gas inlet pipe 8 and a high-temperature gas outlet pipe 9, and the reforming chamber A is provided with a fuel gas inlet pipe 10 and a reformed gas outlet pipe 11.

[0029] Specifically, the housing 1 serves as the external load-bearing structure of the device, providing installation space and a sealed environment for the internal components. The first partition 2 and the second partition 3 are coaxially arranged inside the housing 1 and sealed to the inner wall of the housing 1, dividing the interior of the housing 1 into three regions: a first chamber 6 formed by the first partition 2 and one end of the housing 1; a second chamber 7 formed by the second partition 3 and the other end of the housing 1; and a heating chamber B formed between the first partition 2, the second partition 3, and the housing 1. Ventilation holes 5 on the first partition 2 and the second partition 3 provide channels for gas flow. The coating assembly 4 is a hollow structure with openings at both ends, disposed inside the housing 1, and its two ends are sealed to the ventilation holes 5 on the first partition 2 and the second partition 3, respectively. Since the combustion catalyst is an exothermic reaction, the reforming catalyst... It is an endothermic reaction, so the coated combustion catalyst can provide the temperature conditions for the reforming reaction of fuel gas. The cavity wall of the coating component 4 serves as the separation interface between the heating chamber B and the reforming chamber A, achieving a sealed isolation between the two chambers. The high-temperature gas inlet pipe 8 and the high-temperature gas outlet pipe 9 are located in the heating chamber B for the introduction and discharge of high-temperature gas, achieving heat exchange with the outer wall of the coating component 4. The fuel gas inlet pipe 10 is located in the reforming chamber A for introducing fuel gas into the second chamber 7, and the reformed gas outlet pipe 11 is used to discharge the reformed gas after the reaction. The first chamber 6, the second chamber 7, and the inner cavity of the coating component 4 together constitute the reforming chamber A. The first chamber 6 and the second chamber 7 are connected to the inner cavity of the coating component 4 through the vent 5, forming a complete gas flow channel.

[0030] The two ends of the coating component 4 are respectively sealed and connected to the vent holes 5 of the first partition 2 and the second partition 3, so that the heating chamber B and the reforming chamber A are only heat-conducted through the cavity wall of the coating component 4, without gas exchange; the outer edges of the first partition 2 and the second partition 3 are sealed and connected to the side wall of the shell 1 to ensure the independent sealing of the heating chamber B; the high temperature gas inlet pipe 8 and the high temperature gas outlet pipe 9 are connected to the heating chamber B, and the fuel gas inlet pipe 10 and the reformed gas outlet pipe 11 are respectively connected to the two end chambers of the reforming chamber A.

[0031] In this embodiment of the invention, reference is made to Figure 4 As shown, high-temperature gas enters the heating chamber B through the high-temperature gas inlet pipe 8, exchanges heat with the outer wall of the coating component 4, and is discharged through the high-temperature gas outlet pipe 9. Fuel gas enters the second chamber 7 through the fuel gas inlet pipe 10, and enters the inner cavity of the coating component 4 through the vent hole 5 on the second partition 3. Under the action of the reforming catalyst, an endothermic reforming reaction occurs, and the generated reformed gas enters the first chamber 6 through the vent hole 5 on the first partition 2, and is finally discharged through the reformed gas outlet pipe 11. Since the heating chamber B and the reforming chamber A are sealed and isolated through the cavity wall of the coating component 4, the first partition 2, and the second partition 3, the high-temperature gas and the fuel gas flow in their respective independent chambers and undergo efficient heat conduction through the shared cavity wall of the coating component 4. This avoids direct mixing of the two gases and achieves direct heat transfer. At the same time, the coating structure replaces the traditional particulate catalyst filling method, eliminating the risks of catalyst pulverization, wear, and being carried out by the airflow. This makes the system structure more compact, the heat and mass transfer path shorter, the energy utilization efficiency higher, and the operation more stable and reliable.

[0032] It should be noted that the number of coating components 4 is not limited in this embodiment of the invention, and can be set according to actual needs. Preferably, multiple coating components 4 are provided, with gaps between them. For example, two, three, four, etc., can be provided. At the same time, the positional arrangement of the multiple coating components 4 is not limited. Preferably, the multiple coating components 4 are arranged in parallel in the housing 1 and in a uniform ring array, which can improve heat exchange efficiency.

[0033] For example, multiple coating components 4 are arranged in parallel inside the housing 1. The two ends of each coating component 4 are respectively sealed to the vent holes 5 on the first partition 2 and the second partition 3. Gaps are maintained between adjacent coating components 4 and between the coating components 4 and the inner wall of the housing 1. These gaps, together with the first partition 2, the second partition 3 and the housing 1, constitute the flow channel space of the heating chamber B, so that the high-temperature gas can be evenly distributed around the outer wall of each coating component 4. The number of vent holes 5 on the first partition 2 and the second partition 3 matches the number of coating components 4, ensuring that the inner cavity of each coating component 4 is connected to the two end chambers of the reforming chamber A. After the fuel gas inlet pipe 10 is connected to the second chamber 7, it is distributed in parallel to the inner cavities of multiple coating components 4 through each vent hole 5 for reforming reaction. The generated reformed gas is then collected in the first chamber 6 and discharged through the reformed gas outlet pipe 11. This structure, through the parallel arrangement of multiple coated components 4, significantly increases the heat exchange area and reaction capacity while maintaining the sealed isolation between the heating chamber B and the reforming chamber A. The gaps between the coated components 4 allow high-temperature gas to flow evenly through the outer walls of each component, avoiding local overheating or uneven heat exchange. At the same time, the parallel flow channel design reduces the system pressure drop, improves the uniformity of gas distribution and overall processing efficiency, enabling the device to achieve greater production capacity and more stable thermal management in a compact structure.

[0034] Combined with reference Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 As shown, in a preferred embodiment of the present invention, each coating component 4 includes multiple module components 12, which are connected in series and / or in parallel. Adjacent module components 12 are detachably connected, facilitating flexible adjustment of the overall length or combination of the coating component 4 according to working conditions. Of course, in other embodiments, each coating component 4 may also have only one module component 12; this is not a limitation. Returning to the embodiment of the present invention, exemplarily, multiple module components 12 are connected in series, and a baffle 13 is provided between adjacent module components 12, referring to… Figure 8 As shown, the outer edge of the baffle 13 is provided with multiple notches 14, and the notches 14 form a flow channel between the inner walls of two adjacent module components 12, which is used to guide the airflow to adhere to the channel wall of the coating component 4.

[0035] Specifically, in this embodiment of the invention, each module component 12 is a hollow structure with openings at both ends. Its inner cavity is coated with a reforming catalyst, and its outer wall contacts the heat medium in the heating chamber B for heat exchange. When multiple module components 12 are connected in series, a baffle 13 is provided between two adjacent module components 12. The outer edge of the baffle 13 is provided with multiple notches 14. The notches 14 and the inner walls of the two adjacent module components 12 form a flow channel to guide the airflow to adhere to the channel wall of the coating component 4, extend the airflow heat transfer path, and enhance the heat exchange with the heating chamber B. The baffle 13 also plays a positioning and supporting role for adjacent module components 12 to ensure the coaxiality and stability of the series structure. This modular design allows the coating component 4 to be flexibly configured in terms of module quantity and connection method according to production capacity requirements. The detachable connection (which can be bolted) facilitates partial replacement or maintenance, reducing operation and maintenance costs. When arranged in series, the flow channel formed by the baffle 13 causes radial disturbance of the airflow, which disrupts the flow boundary layer and enhances the convective heat transfer coefficient. At the same time, it avoids airflow short-circuiting, ensuring that the reactant gas and the reforming catalyst are in full contact and absorb heat uniformly, thereby improving the reaction conversion rate and energy utilization efficiency. This allows the device to maintain a compact structure while having stronger adaptability and higher thermal efficiency.

[0036] More preferably, in conjunction with reference Figure 5 , Figure 6 and Figure 7 As shown, the inner cavity of the module assembly 12 is filled with a first honeycomb carrier 15, and the outer wall of the module assembly 12 is wrapped with a second honeycomb carrier 16; the second honeycomb carrier 16 is coated with a catalytic combustion catalyst by immersion or spraying, and the reforming catalyst is coated on the first honeycomb carrier 15 by immersion or spraying; both the first honeycomb carrier 15 and the second honeycomb carrier 16 include multiple axially penetrating flow channels, and there are gaps between the second honeycomb carriers 16 of adjacent module assemblies 12.

[0037] Specifically, in this embodiment of the invention, module component 12 adopts a double-layer honeycomb carrier structure. Its inner cavity is filled with a first honeycomb carrier 15, and its outer wall is wrapped with a second honeycomb carrier 16. Both the first honeycomb carrier 15 and the second honeycomb carrier 16 include multiple axially penetrating flow channels. The reforming catalyst is coated on the surface of the flow channels of the first honeycomb carrier 15 by immersion or spraying, and the catalytic combustion catalyst is coated on the surface of the flow channels of the second honeycomb carrier 16 by immersion or spraying. There is a gap between the second honeycomb carriers 16 of adjacent module components 12, and the gap is connected to the heating chamber B, so that high-temperature gas can flow through the outer wall surface of each module component 12. This double-layer honeycomb carrier structure integrates the reforming reaction zone and the catalytic combustion reaction zone into the same module component 12. The axial flow channel of the first honeycomb carrier 15 provides a low-resistance reaction channel for the fuel gas, while the axial flow channel of the second honeycomb carrier 16 provides the reaction space for the catalytic combustion reaction. Both are efficiently heat-conducted through the shared wall of the module component 12. The gaps in the second honeycomb carrier 16 between adjacent module components 12 allow the high-temperature gas to be evenly distributed and flush the outer walls of each module component 12, preventing localized overheating. Simultaneously, the honeycomb porous structure significantly increases the coating area of ​​the catalytic combustion catalyst and the gas contact area, improving catalytic combustion efficiency and heat output stability. This allows the device to achieve tight coupling and efficient energy transfer between the reforming reaction and the heating reaction within a compact structure. Preferably, refer to... Figure 4 As shown, the flow direction of the fuel gas ( Figure 4 (in the direction of the green arrow) and the flow of catalytic combustion ( Figure 4 The direction of the red arrow is opposite to that of the reforming chamber and the heating chamber, which can further improve the heat exchange efficiency.

[0038] Furthermore, in conjunction with reference body 1- Figure 4 As shown, the embodiment of the present invention also includes a gas distribution component 17, which includes an annular flow channel 18 and multiple connecting pipes 19. One end of each connecting pipe 19 is connected to the annular flow channel 18, and the other end is connected to the second chamber 7. The fuel gas inlet pipe 10 is connected to the annular flow channel 18.

[0039] An annular flow channel 18 is fitted onto the outer wall of the housing 1, and the fuel gas inlet pipe 10 is located on the outer side of the housing 1; the connecting pipe 19 is located inside the housing 1, and the second partition 3 is provided with multiple connecting holes 21; see reference. Figure 10 As shown, the connecting hole 21 is configured to allow the connecting pipe 19 to transport fuel gas into the second chamber 7 after a sealed connection with the connecting pipe 19. The fuel gas in the second chamber 7 is then transported into the cavity of the coating assembly 4 through the vent hole 5 on the second partition 3. After reacting with the reforming catalyst in the cavity of the coating assembly 4, the fuel gas... (The sentence is incomplete and requires further context to translate accurately.) Figure 12As shown, the air is delivered to the first chamber 6 through the vent 5 on the first partition 2; the reorganized exhaust pipe 11 is connected to the first chamber 6.

[0040] Specifically, in this embodiment of the invention, the gas distribution component 17 includes an annular flow channel 18 and multiple connecting pipes 19. The annular flow channel 18 is sleeved on the outer wall of the housing 1. The fuel gas inlet pipe 10 is disposed on the outer side of the housing 1 and communicates with the annular flow channel 18. One end of each connecting pipe 19 is communicated with the annular flow channel 18, and the other end passes through the housing 1 and communicates with the second chamber 7. The connecting pipe 19 is disposed inside the housing 1. The second partition 3 is provided with multiple communicating holes 21. The communicating holes 21 are sealed to the connecting pipe 19, so that the connecting pipe 19 can uniformly deliver the fuel gas into the second chamber 7. After the fuel gas enters the second chamber 7, it is distributed to the cavity of each coating component 4 through the vent hole 5 on the second partition 3. Under the action of the reforming catalyst, a reforming reaction occurs. The generated reformed gas is collected into the first chamber 6 through the vent hole 5 on the first partition 2 and finally discharged through the reformed gas outlet pipe 11 that communicates with the first chamber 6.

[0041] The gas distribution assembly 17, through the arrangement of the annular flow channel 18 and multiple connecting pipes 19, evenly distributes the fuel gas outside the shell 1 to the second chamber 7 inside the shell 1, achieving circumferential uniform feeding of the fuel gas and avoiding uneven gas distribution caused by single-point feeding. The sealed connection between the connecting pipe 19 and the connecting hole 21 on the second partition 3 ensures the airtightness of the reforming chamber A and prevents fuel gas from leaking into the heating chamber B. At the same time, the sleeve structure of the annular flow channel 18 does not occupy the internal space of the shell 1, making the device structure more compact. The parallel distribution of multiple connecting pipes 19 reduces flow resistance and improves the uniformity of gas flow in each coating assembly 4, thereby improving the overall reaction efficiency and the stability of the product gas composition.

[0042] Preferably, the coating component 4, the vent holes 5 on the first partition 2, and the vent holes 5 on the first partition 2 are all provided with six holes, which are arranged in a ring array on the first partition 2; a connecting hole 21 is provided between two adjacent vent holes 5 on the second partition 3, and the six connecting holes 21 are arranged in a ring array on the second partition 3; a connecting pipe 19 is provided between two adjacent coating components 4, and there is a gap between the connecting pipe 19 and the coating component 4; a conical guide fluid 20 is provided in the second chamber 7, referring to the reference. Figure 3 and Figure 4 As shown, the conical guide fluid 20 is coaxially arranged with the first partition plate 2. The large-diameter end of the conical guide fluid 20 is connected to the first partition plate 2, and its small-diameter end is connected to the shell 1. The vent hole 5 and the connecting hole 21 are both arranged around the conical guide fluid 20.

[0043] Specifically, the two ends of the six coating components 4 are respectively sealed and connected to the first partition 2 and the second partition 3 to form parallel flow channels. The connecting pipe 19 is alternately distributed with the coating components 4. A connecting pipe 19 is provided between two adjacent coating components 4. There is a gap between the connecting pipe 19 and the coating component 4. The gap is connected to the heating chamber B, so that the high temperature gas can flow through the outer wall of the coating component 4 and exchange heat with the outer wall of the connecting pipe 19. The conical guide fluid 20 disperses the fuel gas radially along the conical surface of the conical guide fluid 20 and then evenly introduces it into each vent hole 5. The structure maximizes reaction capacity and heat exchange area within a limited space through the ring array arrangement of six coating components 4; the alternating distribution of connecting pipes 19 and coating components 4 allows the fuel gas distribution and high-temperature gas flow space to be staggered, enhancing the thermal integration effect; the setting of the conical guide 20 causes the fuel gas entering the second chamber 7 to generate radial splitting, eliminating the dead zone of the central feed, ensuring the uniformity of flow distribution of the six vents 5 and connecting pipes 19, while the guiding effect of the conical surface reduces the local resistance of gas turning, enabling the device to achieve low resistance, uniform distribution, and high efficiency of heat and mass transfer and reaction conversion under high compactness.

[0044] More preferably, a tapered conduit 22 is disposed within the first chamber 6, as shown in the reference. Figure 13 As shown, the large end of the conical conduit 22 passes through the first partition 2 and connects to the heating chamber B, while the small end of it connects to the high-temperature gas inlet pipe 8; the high-temperature gas outlet pipe 9 is located on the side near the second partition 3. The structure, through the gradually expanding design of the conical conduit 22, allows the high-temperature gas to enter from the high-temperature gas inlet pipe 8, where the flow velocity decreases and the static pressure recovers, and it diffuses evenly radially to all areas of the heating chamber B, avoiding uneven heat exchange caused by high-speed airflow directly impacting the local coating components 4. After the high-temperature gas completes heat exchange with the outer wall of the coating components 4 in the heating chamber B, it is discharged from the high-temperature gas outlet pipe 9 near the second partition 3, forming a flow path opposite to the reformed airflow, maximizing the heat transfer temperature difference and heat exchange efficiency. The small-port connection between the conical conduit 22 and the high-temperature gas inlet pipe 8 facilitates the connection of external pipelines, while the through connection between the large-port end and the first partition 2 ensures that the high-temperature gas is evenly distributed in the center of the annular array of six coating components 4, forming a symmetrical arrangement with the fuel gas distribution structure of the conical guide 20, resulting in a balanced internal flow field distribution, reasonable thermal stress distribution, and enhanced operational stability.

[0045] Furthermore, referring to Figure 9 and Figure 11As shown, it also includes a third partition 23 and a fourth partition 24 disposed between the first partition 2 and the second partition 3. The third partition 23 is disposed on one side of the first partition 2, and the fourth partition 24 is disposed on one side of the second partition 3. The outer edges of the third partition 23 and the fourth partition 24 are sealed to the inner wall of the housing 1. There is a gap between the first partition 2 and the third partition 23, a gap between the second partition 3 and the fourth partition 24, and a gap between the third partition 23 and the fourth partition 24. The coating assembly 4 penetrates through the third partition 23 and the fourth partition 24. A guide hole 25 is provided in the center of the fourth partition 24. The third partition 23 and the fourth partition 24 are both sleeved on the outside of the second honeycomb carrier 16.

[0046] Specifically, in this embodiment of the invention, a first pressure equalization cavity is formed between the first partition 2 and the third partition 23, a second pressure equalization cavity is formed between the second partition 3 and the fourth partition 24, and a flow stabilization cavity is formed between the third partition 23 and the fourth partition 24; the coating component 4 penetrates through the third partition 23 and the fourth partition 24, and both the third partition 23 and the fourth partition 24 are sleeved on the outside of the second honeycomb carrier 16, so that high-temperature gas can enter the flow stabilization cavity from the first pressure equalization cavity through the second honeycomb carrier 16, or from the flow stabilization cavity through the second honeycomb carrier 16 into the second pressure equalization cavity; a flow guide hole 25 is provided in the center of the fourth partition 24, so that the second pressure equalization cavity and the flow stabilization cavity are directly connected.

[0047] The structure divides the heating chamber B into three connected chambers via the third partition 23 and the fourth partition 24. High-temperature gas enters the first equalizing chamber via the conical conduit 22, where it undergoes static pressure homogenization. It then splits into two streams: one stream flows through the radial channel of the second honeycomb carrier 16 into the stabilizing chamber, where it exchanges heat with the middle section of the coating assembly 4, and then enters the second equalizing chamber through the guide hole 25 in the center of the fourth partition 24; the other stream flows directly from the first equalizing chamber into the second equalizing chamber via the second honeycomb carrier 16. The two streams merge and exit through the high-temperature gas outlet pipe 9. The third partition 23 and the fourth partition 24 support the middle section of the coating assembly 4, forming a multi-point constraint structure with the first partition 2 and the second partition 3 at both ends, suppressing coating assemblies with excessively large aspect ratios. The bending deformation and vibration fatigue of component 4 under thermal stress; the guide hole 25 in the center of the fourth partition 24 provides a bypass channel for high-temperature gas, allowing some gas flow to directly enter the second pressure equalization chamber from the flow stabilization chamber, avoiding local overheating caused by gas only passing through the radial flow channel of the second honeycomb carrier 16. At the same time, the third partition 23 and the fourth partition 24 are sleeved on the outside of the second honeycomb carrier 16, allowing high-temperature gas to penetrate the catalytic combustion layer and flow through multiple paths, extending the residence time of the gas flow in the heating chamber and expanding the heat exchange area. With the uniform distribution of the flow field of the conical guide 20 and the conical duct 22, the device maintains structural integrity, temperature uniformity and performance stability during long-term operation, extending its service life.

[0048] In this embodiment of the invention, a combustion catalyst is coated on the outer wall of the coating component 4 to form a combustion catalyst layer. The mixed gas enters the heating chamber B from the high-temperature gas inlet pipe 8 and diffuses to the surface of the combustion catalyst, where a catalytic combustion reaction occurs at a certain temperature, releasing a large amount of heat. The fuel gas enters the second chamber 7 through the fuel gas inlet pipe 10 and diffuses to the reforming catalyst in the inner cavity of the coating component 4, absorbing the heat transferred from the heating chamber B through the cavity wall of the coating component 4 and further heating up. At the same time, a reforming endothermic reaction occurs under the action of the reforming catalyst. This endothermic process achieves in-situ thermal coupling through the exothermic combustion reaction in the heating chamber B and the cavity wall of the coating component 4. That is, the reforming catalyst side and the combustion catalyst side directly transfer heat through the cavity wall of the coating component 4 as a common heat exchange interface. This avoids direct mixing of the two gases and achieves efficient utilization of heat, resulting in a shorter heat and mass transfer path, the highest energy utilization efficiency, and more stable and reliable operation of the system.

[0049] It should be noted that in other embodiments of the present invention, the electric heater 30 can also be set inside the conical conduit 22 for preheating the air during the start-up phase, and stop working after the catalytic combustion reaction stabilizes; a temperature sensor seat 32 can also be set on the housing 1 for installing sensors to detect the temperature of each chamber; the pre-reformation temperature detection tube 27, the outlet temperature detection tube 28, and the post-reformation temperature detection tube 29 are respectively matched with the temperature sensor seat 32 for monitoring the gas temperature before reforming, at the outlet of the heating chamber, and after reforming; heat insulation cotton can also be set to cover the outside of the housing 1 to reduce heat loss; the fan 31 is set at one end of the high-temperature gas inlet / outlet pipe for driving the flow of high-temperature gas.

[0050] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the invention should be included within the scope of protection of the invention. It should be noted that the structures or components illustrated in the accompanying drawings are not necessarily drawn to scale, and descriptions of well-known components, processing techniques, and processes have been omitted to avoid unnecessarily limiting the invention.

Claims

1. A hydrogen production device integrating a reforming catalyst and heat exchanger, characterized in that, It includes a housing (1), a first partition (2), a second partition (3), and at least one coating component (4); The coating component (4) is a hollow structure with openings at both ends. The coating component (4) is disposed inside the housing (1). The inner cavity of the coating component (4) is coated with a reforming catalyst. The first partition (2) and the second partition (3) are coaxially disposed inside the housing (1) and sealed to the side wall of the housing (1). The first partition (2) and the second partition (3) are each provided with at least one vent hole (5). The two ends of the coating assembly (4) are respectively sealed to the vent holes (5) on the first partition (2) and the second partition (3). A heating cavity B is formed between the first partition (2), the second partition (3) and the shell (1). The first partition (2) and one end of the shell (1) form a first chamber (6), and the second partition (3) and the other end of the shell (1) form a second chamber (7). The first chamber (6) and the second chamber (7) are located at the two ends of the heating cavity B, respectively. The first chamber (6), the second chamber (7), and the inner cavity of the coating assembly (4) form a reforming chamber A. The first chamber (6) and the second chamber (7) are respectively connected to the inner cavity of the coating assembly (4) through the vent (5). The heating chamber B and the reforming chamber A are sealed and isolated by the cavity wall of the coating assembly (4), the first partition (2) and the second partition (3); The heating chamber B is provided with a high-temperature gas inlet pipe (8) and a high-temperature gas outlet pipe (9), and the reforming chamber A is provided with a fuel gas inlet pipe (10) and a reformed gas outlet pipe (11).

2. The hydrogen production device integrating reforming catalyst and heat exchange according to claim 1, characterized in that, Multiple coating components (4) are provided, and gaps exist between the multiple coating components (4).

3. A hydrogen production device integrating reforming catalyst and heat exchange according to claim 2, characterized in that, Each of the coating components (4) includes multiple module components (12), which are connected in series and / or in parallel, and adjacent module components (12) are detachably connected.

4. A hydrogen production device integrating reforming catalyst and heat exchange according to claim 3, characterized in that, Multiple module components (12) are connected in series, and a baffle (13) is provided between two adjacent module components (12). The outer edge of the baffle (13) is provided with multiple notches (14). The notches (14) and the inner walls of two adjacent module components (12) form a flow channel to guide the airflow to adhere to the channel wall of the coating component (4).

5. A hydrogen production device integrating reforming catalyst and heat exchange according to claim 3, characterized in that, The inner cavity of the module component (12) is filled with a first honeycomb carrier (15), and the outer wall of the module component (12) is wrapped with a second honeycomb carrier (16). The second honeycomb carrier (16) is coated with a catalytic combustion catalyst by immersion or spraying, and the reforming catalyst is coated on the first honeycomb carrier (15) by immersion or spraying. The first honeycomb carrier (15) and the second honeycomb carrier (16) both include multiple axially penetrating flow channels, and there is a gap between the second honeycomb carrier (16) between adjacent module components (12).

6. A hydrogen production apparatus integrating reforming catalyst and heat exchange according to any one of claims 1-5, characterized in that, It also includes a gas distribution assembly (17), which includes an annular flow channel (18) and multiple connecting pipes (19). One end of each connecting pipe (19) is connected to the annular flow channel (18), and the other end is connected to the second chamber (7). The fuel gas inlet pipe (10) is connected to the annular flow channel (18).

7. A hydrogen production device integrating reforming catalyst and heat exchange according to claim 6, characterized in that, The annular flow channel (18) is sleeved on the outer wall of the housing (1), and the fuel gas inlet pipe (10) is located on the outside of the housing (1). The connecting pipe (19) is disposed inside the housing (1), and the second partition (3) is provided with a plurality of connecting holes (21). The connecting hole (21) is configured to allow the connecting pipe (19) to transport fuel gas into the second chamber (7) after being sealed to the connecting pipe (19). The fuel gas is transported into the cavity of the coating assembly (4) through the vent hole (5) on the second partition (3) in the second chamber (7). After the fuel gas reacts with the reforming catalyst in the cavity of the coating assembly (4), it is transported into the first chamber (6) through the vent hole (5) on the first partition (2). The reorganized exhaust pipe (11) is connected to the first chamber (6).

8. A hydrogen production device integrating reforming catalyst and heat exchange according to claim 7, characterized in that, The coating component (4), the ventilation holes (5) on the first partition (2), and the ventilation holes (5) on the first partition (2) are all provided with six holes. The ventilation holes (5) are arranged in a ring array on the first partition (2) and the first partition (2). A connecting hole (21) is provided between two adjacent ventilation holes (5) on the second partition (3), and the six connecting holes (21) are arranged in a ring array on the second partition (3); A connecting pipe (19) is provided between two adjacent coating components (4), and there is a gap between the connecting pipe (19) and the coating component (4); A conical guide fluid (20) is provided in the second chamber (7). The conical guide fluid (20) is coaxially arranged with the first partition (2). The large diameter end of the conical guide fluid (20) is connected to the first partition (2), and its small diameter end is connected to the shell (1). Both the vent (5) and the connecting hole (21) are arranged around the conical guide (20).

9. A hydrogen production device integrating reforming catalyst and heat exchange according to claim 1, characterized in that, A tapered conduit (22) is provided in the first chamber (6). The large end of the tapered conduit (22) passes through the first partition (2) and is connected to the heating chamber B, and the small end is connected to the high-temperature gas inlet pipe (8). The high-temperature gas outlet pipe (9) is located on the side close to the second partition (3).

10. A hydrogen production device integrating reforming catalyst and heat exchange according to claim 5, characterized in that, It also includes a third partition (23) and a fourth partition (24) disposed between the first partition (2) and the second partition (3), wherein the third partition (23) is disposed on one side of the first partition (2) and the fourth partition (24) is disposed on one side of the second partition (3); The outer edges of the third partition (23) and the fourth partition (24) are sealed to the inner wall of the housing (1). There is a gap between the first partition (2) and the third partition (23), and there is a gap between the second partition (3) and the fourth partition (24). The coating assembly extends through the third partition (23) and the fourth partition (24). The fourth partition (24) has a flow guide hole (25) at its center. The third partition (23) and the fourth partition (24) are both sleeved on the outside of the second honeycomb carrier (16).

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