Modular high temperature co-electrolysis hotbox structure

Abstract

This application discloses a modular high-temperature co-electrolysis heat box structure, relating to the field of high-temperature solid oxide co-electrolysis technology. It includes: a box body with a door on its first side, one side of which is fixed to the first side by a locking structure, and the other side by a mechanical handle; a drawer-type assembly located on the top surface of the box body, including two sets of parallel pull-out modules; each pull-out module includes a groove, a fixed bracket, and a sliding component, one end of which is fixed to the fixed bracket, and the other end is located in the groove, which is fixed to the top surface; heat exchange modules located inside the box body, including a heat exchanger and a preheater, with different heat exchange modules connected in parallel; and a heat insulation system including heat insulation modules located on the inner walls of the heat box, each heat insulation module comprising multiple adjacently arranged heat insulation cotton, the heat insulation cotton being a long strip structure. This application, through modular design, solves problems such as difficult heat box maintenance, poor expandability, long downtime, and high component replacement costs.

Description

Technical Field

[0001] This application relates to the field of high-temperature solid oxide co-electrolysis technology, and more specifically, to a modular high-temperature co-electrolysis hot box structure. Background Technology

[0002] High-temperature solid oxide co-electrolysis is an electrochemical process that simultaneously electrolyzes water and carbon dioxide at high temperatures to produce hydrogen and carbon monoxide. The generated hydrogen and carbon monoxide can be directly used as syngas feedstocks and are widely applied in the synthesis processes of green fuels (such as methanol, dimethyl ether, and ammonia). Compared to low-temperature electrolysis technology, it has advantages such as lower energy consumption, higher thermal efficiency, and the ability to be deeply coupled with renewable energy heat sources. Therefore, it is considered one of the important technological pathways for achieving the integrated production of "green hydrogen-syngas-green fuel".

[0003] In high-temperature solid oxide co-electrolysis systems, the operating temperature of the fuel cell stack typically ranges from 700℃ to 850℃. The high-temperature environment required for stack operation is provided by a high-temperature heat box. The heat box not only needs to provide a stable thermal environment to ensure the efficiency of the fuel cell stack's electrochemical reactions, but also needs to possess excellent insulation performance to reduce energy loss and provide support for gas heating, fuel cell stack gas sealing, and thermal management. The heat box's thermal stability, gas tightness, and structural design directly affect the overall performance and lifespan of the system.

[0004] In existing technologies, high-temperature heating boxes mostly adopt an integrated design of a welded frame and an integral insulation layer. During manufacturing, the frame and outer shell are usually fixed by welding, and the insulation layer is encapsulated inside the heating box by integral laying or casting. This structure can achieve good airtightness and thermal stability at the factory stage, and the manufacturing process is relatively mature and suitable for mass production. However, in actual engineering applications, once the internal insulation layer, electric heating elements, or gas circuit interfaces are damaged, it is necessary to completely disassemble the outer shell or peel off a large area of ​​the insulation layer, which not only results in long maintenance cycles and complex operations, but also leads to material waste and increased economic costs. In addition, when upgrading the system, replacing different specifications of fuel cells, or adjusting the interface layout, the integral welded structure requires reprocessing or replacing the entire heating box, resulting in poor scalability of the heating box. Utility Model Content

[0005] This application provides a modular high-temperature co-electrolysis heat exchanger structure to overcome at least one technical problem existing in the prior art.

[0006] This application provides a modular high-temperature co-electrolysis heat exchanger structure, including: a box body, a drawer-type assembly, an opening and closing door, at least one set of heat exchange modules, and a heat insulation system;

[0007] The box is rectangular in shape, and a first opening is provided on the first side of the box. The opening and closing door is located at the first opening. One side of the opening and closing door is fixed to the first side by a locking structure, and the other side is fixed to the first side by a mechanical handle.

[0008] The drawer-type assembly is located on the top surface of the box body. The drawer-type assembly includes two sets of pull-out modules arranged in parallel. Each pull-out module includes a groove, a fixed bracket, and a sliding component. One end of the sliding component is fixed to the fixed bracket, and the other end is located in the groove. The groove is fixed to the top surface.

[0009] The heat exchange module is located inside the box and includes a heat exchanger and a preheater. Different heat exchange modules are connected in parallel.

[0010] The heat insulation system includes heat insulation modules located on the inner walls of each heat box. Each heat insulation module includes multiple heat insulation cottons arranged adjacent to each other, and the heat insulation cottons have a long strip structure.

[0011] Optionally, a first junction box and a second junction box are provided on the second side of the housing, with the power terminal of the preheater placed in the first junction box and the signal terminal of the temperature sensor placed in the second junction box.

[0012] Optionally, the system may also include multiple lifting assemblies, each comprising a connector and a lifting ring, one end of the connector being fixed to the top surface and the other end being fixed to the lifting ring.

[0013] Optionally, it includes four hoisting assemblies, which are located at the four corners of the top surface of the housing.

[0014] Optionally, it also includes a functional interface, which includes multiple clamp-type flange interfaces;

[0015] Multiple clamp-type flange interfaces are located on the third side and bottom of the enclosure, respectively.

[0016] Optionally, the housing is made of metal.

[0017] Optionally, the various surfaces of the housing adopt an assembly structure.

[0018] Optionally, the system may also include multiple gas combining and splitting modules, which are connected to the heat exchange module.

[0019] Optionally, two load-bearing pillars are arranged parallel to each other on the bottom surface of the box.

[0020] Optionally, the insulation cotton is provided with a number, and insulation cotton of the same model has the same number, while insulation cotton of different models has different numbers.

[0021] The innovative aspects of this application's embodiments include:

[0022] 1. In this embodiment, an opening and closing door is provided on the side of the hot box, which allows operators to quickly open the hot box for internal operations, realize module replacement and equipment inspection, complete local module maintenance and online rapid recovery of operation, which is conducive to improving accessibility and security during operation and is one of the innovations of this application embodiment.

[0023] 2. In this embodiment, a drawer-type component is provided on the top surface of the hot box. When the hot box needs to be replaced or maintained, the hot box can be slid by sliding the sliding component in the groove, thereby importing or exporting the hot box from the high-temperature co-electrolysis system, improving the efficiency of replacement and maintenance. This is one of the innovative points of this application embodiment.

[0024] 3. In this embodiment, the different heat exchange modules are set in parallel structure, and each group of modules can undertake a part of the airflow heat exchange task. Therefore, the flow rate and heat exchange capacity can be flexibly adjusted according to the system requirements, which facilitates quick replacement and independent maintenance. This provides great scalability and redundancy for system operation and is one of the innovations of this application embodiment.

[0025] 4. In this embodiment, the strip-shaped insulation cotton is combined into an insulation module. Therefore, even in high-temperature and high-airflow environments, the heat leakage problem caused by cracking or deformation of the entire insulation material can be avoided. Furthermore, since the strip-shaped insulation unit is an independently detachable structure, when a local insulation cotton is damaged or fails, only the corresponding strip-shaped unit needs to be replaced, without dismantling the entire insulation structure. This provides high maintainability, greatly simplifies the structural maintenance process of the heat box, shortens system downtime, and improves operational reliability. This is one of the innovative points of this application embodiment. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application 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 only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of a modular high-temperature co-electrolysis heat exchanger provided in an embodiment of this application;

[0028] Figure 2 A schematic diagram of a heat exchange module provided in an embodiment of this application;

[0029] Figure 3 A schematic diagram of a thermal insulation system provided in an embodiment of this application;

[0030] Figure 4 A schematic diagram of a structure of three sets of parallel connections provided in an embodiment of this application;

[0031] Figure 5 This is a schematic diagram of a structure with four parallel connections provided in an embodiment of this application. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0033] It should be noted that the terms "comprising" and "having," and any variations thereof, in the embodiments and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the steps or units listed, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0034] This application discloses a modular high-temperature co-electrolysis heating box structure. Detailed descriptions follow.

[0035] Figure 1 This is a schematic diagram of a modular high-temperature co-electrolysis heat exchanger structure provided in an embodiment of this application. Figure 2 This is a schematic diagram of a heat exchange module provided in an embodiment of this application. Figure 3 Please refer to the schematic diagram of a thermal insulation system provided in an embodiment of this application. Figures 1-3 The modular high-temperature co-electrolysis heat exchanger structure 100 provided in this application embodiment includes: a box body 10, a drawer-type assembly 20, an opening and closing door 30, at least one set of heat exchange modules 40 and a heat insulation system 50;

[0036] The box body 10 is rectangular in shape. The first side 11 of the box body 10 is provided with a first opening 110. The opening and closing door 30 is located at the first opening 110. One side of the opening and closing door 30 is fixed to the first side 11 by a locking structure 31, and the other side is fixed to the first side 11 by a mechanical handle 32.

[0037] The drawer-type component 20 is located on the top surface 12 of the box 10. The drawer-type component 20 includes two sets of pull-out modules 21 arranged in parallel. The pull-out module 21 includes a groove 210, a fixed bracket 211 and a sliding component 212. One end of the sliding component 212 is fixed to the fixed bracket 211 and the other end is located in the groove 210. The groove 210 is fixed to the top surface 12.

[0038] The heat exchange module 40 is located inside the housing 10 and includes a heat exchanger 41 and a preheater 42. Different heat exchange modules 40 are connected in parallel.

[0039] The insulation system 50 includes insulation modules 51 located on the inner walls of each heat box. Each insulation module 51 includes multiple insulation cotton 510 arranged adjacent to each other. Each insulation cotton 510 has a long strip structure.

[0040] For details, please refer to Figures 1-3 The modular high-temperature co-electrolysis heating box structure 100 provided in this application embodiment includes a rectangular box 10. In order to enable the box 10 to have good heat preservation performance and reduce energy loss, the box 10 is made of a metal material with good airtightness and heat insulation performance in this embodiment, so as to minimize heat loss during long-term operation, ensure the overall energy efficiency of the system, and thus meet the thermal efficiency requirements of the system.

[0041] In high-temperature solid oxide co-electrolysis systems, the operating temperature of the fuel cell stack is typically between 700℃ and 850℃, and the high-temperature environment required for stack operation is provided by a high-temperature heat box. However, the electric heating elements, insulation layer, and gas interface inside the high-temperature heat box are prone to aging or even damage under long-term high temperatures, thus requiring regular maintenance or replacement. To facilitate the inspection or replacement of various components inside the heat box, this application provides a first opening 110 on the first side 11 of the box body 10, and installs an opening and closing door 30 at the first opening 110. A locking structure 31 is provided on one side of the opening and closing door 30, so that the opening and closing door 30 is fixed to the first side 11 by the locking structure 31. At the same time, to facilitate the opening and closing operation of the opening and closing door 30, a mechanical handle 32 is also provided on the opening and closing door 30. When it is necessary to open the opening and closing door 30, the mechanical handle 32 is opened, and when it is necessary to close the opening and closing door 30, the mechanical handle 32 is closed, and the opening and closing door 30 is fixed to the first side 11 by the mechanical handle 32. This allows operators to quickly open the hot box for internal operations, enabling module replacement and equipment checks, local module maintenance, and rapid online recovery, thus improving accessibility and security during operation.

[0042] To improve the efficiency of hot box replacement and maintenance, this application also provides a drawer-type assembly 20 on the top surface 12 of the hot box body 10. This drawer-type assembly 20 includes two sets of parallel pull-out modules 21, which facilitate the insertion and removal of the hot box body 10. Each pull-out module 21 includes a groove 210, a fixed bracket 211, and a sliding component 212. The groove 210 is fixed to the top surface 12 of the body 10, and part of the sliding component 212 is engaged within the groove 210. The shape of the sliding component 212 matches the shape of the groove 210, making the engagement of the sliding component 212 within the groove 210 more secure. To enable the sliding of the body 10, one end of the sliding component 212 is also fixed to the fixed bracket 211, which is fixed to the high-temperature co-electrolysis system. Thus, when the hot box needs to be replaced or maintained, the hot box body 10 can be slid by sliding the sliding part 212 in the groove 210, thereby importing or exporting the hot box body 10 from the high-temperature co-electrolysis system, improving the efficiency of replacement and maintenance.

[0043] In addition, to further improve the maintainability of the hot box, the various surfaces of the hot box body 10 in this embodiment adopt an assembly structure instead of being integrally formed. This makes it easier to integrate and disassemble the hot box module for maintenance, thereby solving the problem that large-area disassembly is required when replacing or repairing internal components of the existing integral hot box. This helps to reduce the difficulty of operation, thereby shortening the maintenance cycle and reducing maintenance costs.

[0044] In the high-temperature co-electrolysis system, heat exchanger 41 and preheater 42 are key components for optimizing system energy efficiency and realizing heat recovery and material preheating. Therefore, the heat box provided in this application is equipped with at least one set of heat exchange modules 40. Please refer to [reference needed]. Figure 2 Each heat exchange module 40 includes a heat exchanger 41 and a preheater 42. To improve the scalability of the heat exchange box and enable it to adapt to different operating conditions and thermal management requirements, this embodiment employs a standardized design approach to arrange the heat exchange modules 40. This means dividing the complex heat exchange system into multiple functionally consistent, interface-unified, and independently operable standard heat exchange modules 40, allowing for flexible combination of modules to address thermal management needs under different operating conditions.

[0045] To achieve standardized design of the heat exchange module 40, each heat exchanger 41 or preheater 42 unit is designed as a standard module with consistent structural dimensions, interface type, and installation method, such as... Figure 2 As shown. By setting up standardized modules, not only can mass production of the heat exchange module 40 be achieved, reducing costs and shortening delivery cycles, but also industrial-scale mass production can be realized after the modules are unified, simplifying the supply chain. In addition, due to the strong interface universality, it is easy to integrate into different systems, so there is no need to customize the heat exchange structure for each process, which is conducive to improving design reusability.

[0046] To address the thermal management requirements under different operating conditions, this application sets up a parallel structure between the different heat exchange modules 40, such as... Figure 4 This is a schematic diagram of a structure of three sets of parallel connections provided in an embodiment of this application. Figure 5 This is a schematic diagram of a structure with four parallel connections provided in an embodiment of this application. By arranging all heat exchangers 41 and preheaters 42 in parallel, each module can undertake a portion of the airflow heat exchange task. Thus, under conditions of high flow rate or high heat exchange load, the overall heat exchange capacity can be increased by increasing the number of modules. That is, the flow rate and heat exchange capacity can be flexibly adjusted according to system requirements, facilitating rapid replacement and independent maintenance, and providing significant scalability and redundancy for system operation. Therefore, it can be flexibly used in co-electrolysis systems with different stack structures, different stack output power or volumetric flow rates, or in distributed green fuel synthesis systems that can be expanded or reduced in capacity.

[0047] In addition to the heat exchange module 40, a gas combining and splitting module 60 is also provided. The gas combining and splitting module 60 combines / splits the gas / liquid at the inlet / outlet of each heat exchanger 41 and preheater 42 in the heat exchange module 40, realizing modular gas distribution for multiple heat exchange units inside the heat box. This not only facilitates pipeline integration, but also supports arbitrary parallel / series combinations, improving the flexibility of system flow field control.

[0048] For example, the gas combining and splitting module 60 diverts the ambient temperature CO2 / H2O flowing in from the inlet to each preheater 42 in the heat exchange module 40. After being heated to a certain temperature by the preheaters 42, it flows to the heat exchanger 41. In the heat exchanger 41, the residual heat of the product is used to heat it again, thereby electrolyzing CO2 / H2O into hydrogen and carbon monoxide, which then flow out. The hydrogen and carbon monoxide flowing out from each heat exchanger 41 are then combined by the gas combining and splitting module 60.

[0049] To facilitate module installation and disassembly, this application uses quick-release flanges or plug-in connectors to connect the modules. This ensures that the modules do not interfere with each other. When a damaged or aged heat exchange module 40 is found, it can be replaced individually without affecting the operation of other heat exchange modules 40. This not only shortens the replacement cycle but also reduces maintenance complexity, thus helping to reduce system downtime for maintenance.

[0050] To further improve the thermal insulation performance of the hot box, this application also includes a thermal insulation system 50 inside the hot box, and the thermal insulation system 50 includes thermal insulation modules 51 located on the inner walls of each inner wall of the hot box, such as thermal insulation modules 51 located on the inner walls of the top surface 12, the inner walls of each side surface, and the inner wall of the bottom surface. Please refer to... Figure 3To further improve the modularity and maintainability of the overall heat box, this application sets the heat insulation module 51 as a modular and standardized heat insulation cotton 510 structure. That is, each heat insulation module 51 includes multiple long strip heat insulation cotton 510 structures, and the multiple heat insulation cotton 510 in the same heat insulation module 51 are closely arranged and fixed by tight fit and mechanical compression, without the need for high-temperature adhesive bonding, which can avoid replacement obstacles and safety hazards.

[0051] This application uses strip-shaped insulation cotton 510 combined into insulation modules 51. Therefore, even in high-temperature and high-airflow environments, it can avoid heat leakage caused by cracking or deformation of the entire insulation material. Furthermore, since the strip-shaped insulation cotton is an independently detachable structure, when a section of the insulation cotton 510 is damaged or fails, only the corresponding strip unit needs to be replaced, without dismantling the entire insulation structure. This provides high maintainability, significantly simplifies the structural maintenance process of the heat box, shortens system downtime, and improves operational reliability.

[0052] Most of the insulation cotton 510 in the insulation module 51 of this application adopts a standard size. By setting up insulation cotton 510 of uniform size to form insulation module 51, the insulation cotton 510 can be mass-produced and then stacked and spliced ​​into insulation module 51 according to actual needs to achieve insulation coverage for different areas such as top, side wall and bottom.

[0053] While most insulation cotton 510 uses standard sizes, some special sizes exist, such as in areas at the bottom of the heat exchanger where internal components need to be placed, where standard-sized insulation cotton 510 cannot be used. Therefore, to effectively distinguish between standard and special-sized insulation cotton during disassembly and maintenance, this embodiment assigns numbers to the insulation cotton 510. Insulation cotton 510 of the same model is assigned the same number, while different models are assigned different numbers. For example, standard-sized insulation cotton 510 is assigned number 1, the first type of special-sized insulation cotton 510 is assigned number 2, the second type is assigned number 3, and so on. In this way, during disassembly and maintenance, damaged or aged parts can be replaced one by one according to the insulation cotton 510's number, rather than replacing the entire insulation layer. Therefore, it is not necessary to completely peel off the insulation layer, which not only shortens the replacement cycle but also avoids material waste and helps reduce costs.

[0054] Alternatively, please refer to Figure 1 The second side of the housing 10 is provided with a first junction box 131 and a second junction box 132. The power terminal of the preheater 42 is placed in the first junction box 131, and the signal terminal of the temperature sensor is placed in the second junction box 132.

[0055] For details, please refer to Figure 1In this embodiment, two junction boxes are also provided on the outer wall of the housing 10, such as a first junction box 131 and a second junction box 132. Here, the junction boxes can be located on a second side (not shown in the figure) adjacent to the first side 11. The first junction box 131 is used to house the power supply terminals of the preheater 42, and the second junction box 132 is used to house the signal terminals of the temperature sensor. By placing the terminals of the preheater 42 and the temperature sensor in different junction boxes, the risk of cable tangling and electrical faults can be effectively reduced, thereby improving operational safety and system integration.

[0056] Alternatively, please refer to Figure 1 It also includes multiple hoisting components 52, each of which includes a connector 521 and a lifting ring 522. One end of the connector 521 is fixed to the top surface 12, and the other end is fixed to the lifting ring 522.

[0057] For details, please refer to Figure 1 In this embodiment, a hoisting assembly 52 is also provided on the top surface 12 of the hot box. The hoisting assembly 52 includes a connector 521 and a lifting ring 522, wherein one end of the connector 521 is fixed to the top surface 12 and the other end is fixed to the lifting ring 522. During installation and transportation, the entire hot box can be hoisted using the hoisting assembly 52, reducing the difficulty of operation. In addition, in order to keep the box 10 balanced during hoisting, this embodiment provides four hoisting assemblies 52, which are respectively located at the four corners of the top surface 12 of the box 10.

[0058] Alternatively, please refer to Figure 1 It also includes a functional interface 53, which includes multiple clamp-type flange interfaces 531; the multiple clamp-type flange interfaces 531 are located on the third side 14 and the bottom of the housing 10, respectively.

[0059] For details, please refer to Figure 1 In this embodiment, multiple clamp-type flange interfaces 531 are respectively provided on the third side 14 and bottom surface (not marked in the figure) of the hot box body 10 as functional interfaces 53. By setting the clamp-type flange interfaces 531, the hot box can be quickly and efficiently connected and integrated with the external system to complete the gas inlet and outlet and cold / hot fluid circulation.

[0060] Alternatively, please refer to Figure 1 Two load-bearing supports 151 are arranged parallel to each other on the bottom surface of the box body 10. For details, please refer to... Figure 1In this embodiment, two load-bearing pillars 151 are also arranged in parallel on the bottom surface of the hot box (not marked in the figure). For example, the two load-bearing pillars 151 can be located on the left and right sides of the bottom surface respectively. In this way, when the hot box is not hoisted, it can be quickly moved and transported with tools such as forklifts, which improves the deployment flexibility and installation convenience of the hot box on the production line or test site.

[0061] Those skilled in the art will understand that the accompanying drawings are merely schematic diagrams of one embodiment, and the modules or processes shown in the drawings are not necessarily essential for implementing this application.

[0062] Those skilled in the art will understand that the modules in the apparatus of the embodiments can be distributed in the apparatus of the embodiments as described in the embodiments, or they can be located in one or more devices different from this embodiment with corresponding changes. The modules of the above embodiments can be combined into one module, or they can be further divided into multiple sub-modules.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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. Such 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 this application.

Claims

1. A modular high-temperature co-electrolysis heating box structure, characterized in that, include: The enclosure, drawer-type components, hinged doors, at least one set of heat exchange modules, and insulation system; The box is rectangular in shape, and a first opening is provided on the first side of the box. The opening and closing door is located at the first opening. One side of the opening and closing door is fixed to the first side by a locking structure, and the other side is fixed to the first side by a mechanical handle. The drawer-type assembly is located on the top surface of the box body. The drawer-type assembly includes two sets of pull-out modules arranged in parallel. Each pull-out module includes a groove, a fixed bracket, and a sliding component. One end of the sliding component is fixed to the fixed bracket, and the other end is located in the groove. The groove is fixed to the top surface. The heat exchange module is located inside the box and includes a heat exchanger and a preheater. Different heat exchange modules are connected in parallel. The heat insulation system includes heat insulation modules located on the inner walls of each heat box. Each heat insulation module includes multiple heat insulation cottons arranged adjacent to each other, and the heat insulation cottons have a long strip structure.

2. The modular high-temperature co-electrolysis heating box structure according to claim 1, characterized in that, The second side of the enclosure is provided with a first junction box and a second junction box. The power terminal of the preheater is placed in the first junction box, and the signal terminal of the temperature sensor is placed in the second junction box.

3. The modular high-temperature co-electrolysis heating box structure according to claim 1, characterized in that, It also includes multiple hoisting components, each comprising a connector and a lifting ring, with one end of the connector fixed to the top surface and the other end fixed to the lifting ring.

4. The modular high-temperature co-electrolysis heating box structure according to claim 3, characterized in that, It includes four hoisting components, which are located at the four corners of the top surface of the box.

5. The modular high-temperature co-electrolysis heating box structure according to claim 1, characterized in that, It also includes functional interfaces, which include multiple clamp-type flange interfaces; Multiple clamp-type flange interfaces are located on the third side and bottom of the enclosure, respectively.

6. The modular high-temperature co-electrolysis heating box structure according to claim 1, characterized in that, The enclosure is made of metal.

7. The modular high-temperature co-electrolysis heating box structure according to claim 1, characterized in that, The various surfaces of the box are assembled.

8. The modular high-temperature co-electrolysis heating box structure according to claim 1, characterized in that, It also includes multiple gas combining and splitting modules, which are connected to the heat exchange module.

9. The modular high-temperature co-electrolysis heating box structure according to claim 1, characterized in that, Two load-bearing pillars are arranged parallel to each other on the bottom surface of the box.

10. The modular high-temperature co-electrolysis heating box structure according to claim 1, characterized in that, The insulation cotton is marked with a number, and insulation cotton of the same model has the same number, while insulation cotton of different models has different numbers.

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