Integrated hydrogen production device integrating particle type reforming agent and heat exchange

Abstract

The utility model provides an integrated hydrogen production device integrating a particle type reforming agent and heat exchange. The device comprises a reforming reactor and a catalytic combustion reactor, the catalytic combustion reactor is provided with two working units which are located on the two sides of the reforming reactor respectively and connected with the reforming reactor in a welded mode through sealing plates. Each working unit is formed by combining and welding two runner plates to form a closed catalytic combustion reaction cavity, and the runner plates are coated with catalytic combustion layers to form a concave-convex snake-shaped structure so as to improve the heat exchange efficiency. The reforming reactor comprises a granular reforming agent, a support plate and a fixed tube, the granular reforming agent is placed in the fixed tube, and the support plate supports the fixed tube and limits the granular reforming agent. According to the utility model, the heat released by the catalytic combustion reaction provides the heat required by the reforming reaction, so that the heat exchange efficiency is improved, the efficient hydrogen production is realized, the module units can be superposed for use according to the system requirement, and the application prospect is wide.

Description

TECHNICAL FIELD

[0001] The utility model relates to fuel cell technical field especially relates to a kind of integrated particle type reforming agent and heat exchange integrated hydrogen production device. BACKGROUND

[0002] The hydrogen production device integrated with particle type reforming agent and heat exchange plays an important role in the solid oxide fuel cell (SOFC for short) system. This kind of device not only provides the necessary place for the vaporization of water vapor and liquid fuel in the reforming gas stream, but also effectively converts gasoline, diesel, aviation kerosene, biomass gas, alcohol and other fuels into a mixture rich in H2, CO and CO2 through the reforming reactor, thereby continuously supplying fuel to the SOFC stack.

[0003] In the current SOFC technology, the heat released by catalytic combustion of hydrocarbon fuel is used to drive the reforming reaction. This heat exchange process not only avoids the loss in the energy conversion process, realizes efficient use of energy, but also meets the heat demand of the reforming reaction, significantly improves the working efficiency of the hydrogen production device. For example, the patent with the patent number CN118117128A shows a micro-channel reforming hydrogen production device for solid oxide fuel cell. The device forms different working zones by combining multiple flow channel plates, and realizes multiple working modes by adjusting the gas inlet parameters and heat absorption and release, thereby improving the economic benefit of the product.

[0004] However, despite the progress made by the existing technology, there are still some problems. Most of the reactor modules have single function, and the overall SOFC system structure layout is large, occupying a large space, which not only leads to a decrease in conversion efficiency, but also causes serious heat loss and low economic benefit. Therefore, how to realize the miniaturization and compactness of the system while maintaining high efficiency has become a problem to be solved. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of integrated particle type reforming agent and heat exchange integrated hydrogen production device to solve the problems of low conversion efficiency and serious heat loss in the prior art.

[0006] The utility model is implemented by the following technical solutions: a kind of integrated particle type reforming agent and heat exchange integrated hydrogen production device, characterized in that it comprises a reforming reactor and a catalytic combustion reactor, characterized in that: the catalytic combustion reactor comprises two working units, respectively arranged on the two sides of the reforming reactor, and welded and connected with the reforming reactor to form a sealed structure by a sealing plate.

[0007] Further, the working unit of the catalytic combustion reactor is formed by welding two flow channel plates to form a closed catalytic combustion reaction chamber, the flow channel plates are coated with a catalytic combustion layer, and the flow channel plates form a concave-convex serpentine structure after assembly to increase the surface area of the working area and improve the heat exchange efficiency.

[0008] Further, the reforming reactor includes a plurality of granular reforming agents, support plates and fixed tubes, the granular reforming agents are placed in the fixed tubes, the support plates support the fixed tubes, the support plates on the two side edges are baffle plates, a plurality of holes with a diameter slightly smaller than the diameter of the granular reforming agents are arranged on the baffle plates to fix and limit the granular reforming agents.

[0009] Further, the catalytic combustion outlet buffer chamber and the catalytic combustion inlet buffer chamber of the catalytic combustion reactor are arranged on the same side to increase the high-temperature gas path and improve the heat exchange area.

[0010] Further, the reforming outlet pipe and the reforming inlet pipe of the reforming reactor are arranged on the opposite sides of the reforming reactor to form an independent reforming gas flow path.

[0011] Further, the mixed gas in the catalytic combustion reactor enters the catalytic combustion reactor through the catalytic combustion inlet buffer chamber, and the catalytic combustion reaction is carried out under the action of the catalyst in the catalytic combustion layer to release a large amount of heat, and the heat is transferred to the granular reforming agents in the reforming reactor through the outer surface of the fixed tube.

[0012] Further, a baffle plate is arranged between the catalytic combustion inlet buffer chamber and the reforming reactor to ensure that the mixed gas can only enter the catalytic combustion reactor from the catalytic combustion inlet.

[0013] The integrated hydrogen production device integrating granular reforming agents and heat exchange has the following beneficial effects:

[0014] High efficiency integration: the device integrates tail gas preheating, catalytic combustion, reforming hydrogen production and other functions in one body, effectively utilizes heat energy through this structured heat exchange mode, and significantly improves the performance of the hydrocarbon fuel vapor reforming reactor.

[0015] Compact structure: through optimization design and modular combination, the device realizes miniaturization and compactness of the system, greatly saves space, reduces manufacturing cost, and improves the stability and reliability of the system.

[0016] High conversion efficiency: the heat generated by catalytic combustion provides the required energy for the reforming reaction, not only avoids additional energy consumption, but also improves the conversion efficiency of the reforming reaction, thereby generating more synthesis gas rich in H2, H2O, CO, C x H y and other useful components.

[0017] Flexible application: the device can be used according to the needs of different systems The module unit is superimposed to meet the application requirements in different scenes, improve the flexibility and adaptability of the system. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed in the following embodiment or prior art description will be briefly introduced, and the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained from the structure shown in the drawings without creative labor.

[0019] Fig. 1 It is an integrated hydrogen production device structure diagram of integrated particle type reforming agent and heat exchange;

[0020] Fig. 2 It is an integrated hydrogen production device structure diagram of integrated particle type reforming agent and heat exchange;

[0021] Fig. 3 It is an internal structure diagram of the reforming reactor;

[0022] In the figure, 1 is a catalytic combustion connecting cavity, 2 is a fixed tube, 3 is a support plate, 4 is a particle type reforming agent, 5 is a reforming reactor, 6 is a catalytic combustion reactor, 7 is a catalytic combustion outlet pipe, 8 is a reforming outlet pipe, 9 is a reforming inlet pipe, 10 is a catalytic combustion outlet buffer cavity, 11 is a catalytic combustion inlet buffer cavity, and 12 is a blocking plate. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0025] As Figs. 1-3As shown, an integrated hydrogen production device integrating particle type reforming agent and heat exchange includes a reforming reactor 5 and a catalytic combustion reactor 6, the catalytic combustion reactor 6 includes two working units and is arranged on both sides of the reforming reactor 5, and the catalytic combustion reactor 6 is sealed on both sides and is connected with the reforming reactor 5 through a sealing plate.

[0026] The catalytic combustion reactor 6, each working unit is formed by two flow channel plates combined and welded to form a closed catalytic combustion reaction cavity, and the flow channel plates in the reaction cavity are coated with a catalytic combustion layer. The grooves of each two flow channel plates are oppositely matched, and the adjacent grooves are provided with ribs when assembled. After the flow channel plates are assembled, the grooves are staggered to form a concave-convex serpentine structure. Under the same volume, the gas flow in the catalytic combustion reactor 6 passes through the concave-convex serpentine structure, which can increase the surface area of the working area and improve the heat exchange efficiency. The working areas above and below the reforming reactor 5 are both heat exchange areas, so that the heat exchange area surrounds the reforming reactor 5, which can further reduce heat loss and increase heat exchange efficiency. The module unit can be stacked for use according to different system requirements.

[0027] The reforming reactor 5 includes a plurality of particle type reforming agents 4, support plates 3 and fixed tubes 2 combined and welded. The particle type reforming agent 4 is placed in the fixed tube 2, and the support plate 3 supports the fixed tube 2. The support plates 3 on both sides are baffles, which limit the particle type reforming agent 4. Further, a plurality of holes are arranged on the baffle, and the hole diameter is slightly smaller than the diameter of the particle type reforming agent 5. The fixed tube 2 is filled with a plurality of particle type reforming agents 5, and the baffle plays a role in fixing and limiting the particle type reforming agent 4.

[0028] The catalytic combustion outlet buffer cavity 10 and the catalytic combustion inlet buffer cavity 11 are on the same side of the catalytic combustion reactor 6, which increases the high-temperature gas path and improves the heat exchange area. The reforming outlet pipe 8 and the reforming inlet pipe 9 are arranged on the opposite side of the reforming reactor 5. The mixed gas passes through the catalytic combustion buffer cavity 11, enters the catalytic combustion reactor 6, and diffuses into the catalytic combustion layer in the combustion channel (catalytic combustion reaction is carried out under the action of the catalyst in the catalytic combustion layer at a certain temperature, and a large amount of heat is released), and then the mixed gas passes through the catalytic combustion connecting cavity 1, and then passes through the outer surface of the fixed tube 2 (the high-temperature gas transfers heat to the fixed tube 2 again, and further heats the particle type reforming agent 5 in the middle part) to enter the catalytic combustion outlet buffer cavity 10, and then enters the catalytic combustion outlet pipe 7 to be connected with the next component.

[0029] The mixed gas of the anode side tail gas (H2, CO, unconverted CH4, residual H2) and the cathode side tail gas (O2, N2) of the electric pile passes through the catalytic combustion inlet buffer cavity 11 through the catalytic combustion inlet, and enters the catalytic combustion reactor 6 respectively, the mixed gas diffuses from the inlet to the combustion catalytic combustion layer in the combustion channel, and the catalytic combustion reaction is carried out under the action of the catalyst of the catalytic combustion layer at a certain temperature, and a large amount of heat is released. At the same time, the (reforming fuel) enters the reforming channel through the reforming inlet pipe 9 (after preheating), the mixed gas diffuses from the inlet to the reforming catalyst 4 in the fixed pipe 2, the mixed gas absorbs the heat transferred from the catalytic combustion reactor 6 to further heat up, and the reforming endothermic reaction process occurs under the action of the reforming catalyst 4, which needs to absorb a large amount of heat transferred from the catalytic combustion reactor 6. The plug plate 12 is arranged between the catalytic combustion inlet buffer cavity 11 and the reforming reactor 5, so that the mixed gas can only enter the catalytic combustion reactor 6 from the catalytic combustion inlet.

[0030] In the above embodiment, the basic principle and main features of the utility model and the advantages of the utility model are described. It should be understood by those skilled in the art that the utility model is not limited by the above embodiment, and the above embodiment and the description in the specification are only to illustrate the principle of the utility model, and the changes and variations made by those skilled in the art without departing from the spirit and scope of the utility model should be within the protection scope of the claims of the utility model.

Claims

1. An integrated hydrogen production device of integrated particle reforming agent and heat exchange, characterized by, The application relates to a reforming reactor (5) and a catalytic combustion reactor (6), characterized in that the catalytic combustion reactor (6) comprises two working units arranged on the two sides of the reforming reactor (5) and welded to the reforming reactor (5) through sealing plates to form a sealed structure.

2. The integrated hydrogen generation device of claim 1, wherein the integrated hydrogen generation device is characterized by: The working unit of the catalytic combustion reactor (6) is formed by welding two flow channel plates to form a closed catalytic combustion reaction cavity, the flow channel plates are coated with a catalytic combustion layer, and the flow channel plates form a concave-convex serpentine structure after assembly to increase the surface area of the working area and improve the heat exchange efficiency.

3. The integrated hydrogen generation device of claim 1, wherein the integrated hydrogen generation device is characterized by: The reforming reactor (5) comprises a plurality of granular reforming agents (4), support plates (3) and fixing pipes (2), the granular reforming agents (4) are placed in the fixing pipes (2), the support plates (3) support the fixing pipes (2), the support plates (3) on the two side edges are baffle plates, a plurality of holes with a diameter slightly smaller than that of the granular reforming agents (4) are arranged on the baffle plates to fix and limit the granular reforming agents (4).

4. The integrated hydrogen generation device of claim 1, wherein the integrated hydrogen generation device is characterized by: The catalytic combustion outlet buffer cavity (10) and the catalytic combustion inlet buffer cavity (11) of the catalytic combustion reactor (6) are arranged on the same side to increase the high-temperature gas path and improve the heat exchange area.

5. The integrated hydrogen generation device of claim 1, wherein the integrated hydrogen generation device is characterized by: The reforming outlet pipe (8) and the reforming inlet pipe (9) of the reforming reactor (5) are arranged on the opposite sides of the reforming reactor (5) to form an independent reforming gas flow path.

6. The integrated hydrogen generation device of claim 1, wherein the integrated hydrogen generation device is characterized by: The mixed gas in the catalytic combustion reactor (6) enters the catalytic combustion reactor (6) through the catalytic combustion inlet buffer cavity (11), performs catalytic combustion reaction under the catalytic action of the catalytic combustion layer, releases a large amount of heat, and transmits the heat to the granular reforming agents (4) in the reforming reactor (5) through the outer surface of the fixing pipe (2).

7. The integrated hydrogen generation device of claim 1, wherein the integrated hydrogen generation device is characterized by: The plug plate (12) is arranged between the catalytic combustion inlet buffer cavity (11) and the reforming reactor (5) to ensure that the mixed gas can only enter the catalytic combustion reactor (6) from the catalytic combustion inlet.

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