Modularized container type electric heating hydrogen co-production device

Abstract

The invention discloses a modular container type electric heat hydrogen co-production device, which belongs to the technical field of renewable energy sources and comprises a box body, and an electrical device, a hydrogen production device, a hydrogen storage device, a fuel cell, an explosion-proof wall, an isolation plate and a grating platform which are integrated in the box body, the interior of the box body is sequentially divided into a cabin A, a cabin B and a cabin C from one end to the other end in the length direction; the cabin A and the cabin B are separated through an explosion-proof wall, and the cabin B and the cabin C are separated through a separation plate; the grating platform is arranged in a cabin C, and the cabin C is divided into an upper space and a lower space; the electrical device is located in the cabin A, the hydrogen production device is located in the cabin B, the hydrogen storage device is located on the lower portion of the cabin C, and the fuel cell is located on the upper portion of the cabin C and arranged on the grating platform. According to the invention, an efficient and compact alkaline hydrogen production device is realized, a compact fuel cell system and a high-density solid hydrogen storage device are integrated, and a compact electric-thermal-hydrogen co-production system which can be flexibly deployed is formed.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of renewable energy, and particularly relates to a modular container type electric-thermal hydrogen cogeneration device. BACKGROUND

[0002] The traditional electric-thermal hydrogen cogeneration system is limited by the dispersed layout and fixed integrated design, and has the following core defects, which seriously restrict the flexible deployment and efficient operation and maintenance:

[0003] 1. Low space utilization

[0004] The key components such as electrolytic cell, hydrogen storage tank and fuel cell are independently installed, and redundant space is reserved to meet the safety specifications, resulting in a large overall land area. This design makes the system unable to be completely integrated in the container.

[0005] 2. Poor scalability and maintainability

[0006] The fixed hard connection design makes the modules form rigid coupling, and the whole system needs to be shut down for maintenance when a single component fails, making the component replacement process complex and time-consuming. The system expansion requires redesign of the pipeline, electrical and control systems, and the capacity of the modules cannot be increased or decreased as needed, which restricts the flexible expansion capability of the system.

[0007] The above defects make it difficult for the traditional electric-thermal hydrogen cogeneration system to meet the needs of flexible deployment and efficient cogeneration in modern energy scenarios, promoting the large-scale application of clean energy and sustainable development. SUMMARY

[0008] Therefore, the application provides a modular container type electric-thermal hydrogen cogeneration device, which realizes an efficient and compact alkaline hydrogen production device, integrates a compact fuel cell system and a high-density solid hydrogen storage device, and forms a compact electric-thermal hydrogen cogeneration system that can be flexibly deployed.

[0009] The application is realized by the following technical solutions:

[0010] A modular container type electric-thermal hydrogen cogeneration device, comprising: a box body and integrated therein electrical devices, hydrogen production devices, hydrogen storage devices, fuel cells, explosion-proof walls, isolation plates and grating platforms;

[0011] The inside of the box body is divided into cabin A, cabin B and cabin C along the length direction from one end to the other end;

[0012] The cabin A and the cabin B are separated by an explosion-proof wall, and the cabin B and the cabin C are isolated by an isolation plate;

[0013] The grating platform is arranged in the cabin C, and the cabin C is divided into upper and lower spaces;

[0014] The electrical device is located in cabin A, the hydrogen production device is located in cabin B, the hydrogen storage device is located in the lower part of cabin C, and the fuel cell is located in the upper part of cabin C and is arranged on the grid platform;

[0015] The electrical device is used for forming a direct current power supply and supplying power to the hydrogen production device; the hydrogen production device is used for producing hydrogen, the hydrogen is stored in the hydrogen storage device, and the stored hydrogen is used as fuel of the fuel cell.

[0016] Further, the hydrogen production device comprises an alkaline electrolytic cell, a gas-liquid separator and a purification device.

[0017] The alkaline electrolytic cell is installed on the inner bottom surface of the box body, the gas-liquid separator is fixed above the alkaline electrolytic cell through a support frame, and the purification device is arranged horizontally and parallel to the alkaline electrolytic cell and is installed on the inner bottom surface of the box body.

[0018] Further, the explosion-proof wall has a three-layer structure and comprises a heat insulation layer and two explosion-proof plates.

[0019] The two explosion-proof plates are arranged oppositely, and the heat insulation layer is filled between the two explosion-proof plates.

[0020] Further, the isolation plate is made of a polypropylene plate.

[0021] Further, the inner bottom surface of the box body is provided with a cable groove.

[0022] The cable between the electrical device and the hydrogen production device is laid in the cable groove, and a cover plate is arranged on the top of the cable groove.

[0023] Further, the heat dissipation system is arranged on the box body and above the fuel cell.

[0024] Further, the heat dissipation system is arranged on the box body and above the fuel cell.

[0025] Further, the heat dissipation system is arranged on the box body and above the fuel cell.

[0026] The two exhaust fans are respectively installed on the top of cabin A and cabin C and are used for ventilation and heat dissipation.

[0027] Further, the hydrogen storage device and the hydrogen production device are communicated through a pipeline for conveying hydrogen, and the pipeline is arranged on the inner top surface of the box body.

[0028] Further, the hydrogen storage device and the fuel cell are communicated through a pipeline for conveying hydrogen, and the pipeline is arranged on the inner bottom surface of the box body.

[0029] Further, the side wall of the box body is provided with a double-layer heat insulation layer.

[0030] Beneficial effects:

[0031] (1) The modular container-type electric-thermal hydrogen co-production device of the application is internally divided into cabin A, cabin B and cabin C along the length direction from one end to the other end; cabin A is located at the end of the box body, integrates electrical devices, is isolated from cabin B by a flameproof wall, maximizes the freedom degree of hydrogen energy equipment arrangement, shortens the cable length and facilitates electrical heat dissipation; cabin B is arranged with a hydrogen production device, is separated from cabin C by a partition plate to prevent the alkaline electrolytic cell solution from splashing and affecting other devices; cabin C is arranged with a hydrogen storage device at the lower part and a fuel cell at the upper part through a grating platform to form a layered structure, fully utilize the space and promote hydrogen flow; the above layout integrates hydrogen production, hydrogen storage, power generation and heat recovery functions in a single box body, meets the compactness requirement of space-limited scenes such as distributed energy stations and island power supply; the physical isolation (flameproof wall / partition plate) between the cabins and the three-dimensional layered design (grating platform) jointly ensure the safe operation of the device and promote the large-scale application of clean energy.

[0032] (2) The modular container-type electric-thermal hydrogen co-production device of the application is arranged with an alkaline electrolytic cell on the inner bottom surface of the box body to form a basic layout of “water at the bottom”, a gas-liquid separator is fixed by a support frame and located directly above the alkaline electrolytic cell to realize vertical separation of “gas at the top”, a purification device is arranged horizontally with the alkaline electrolytic cell to form a three-dimensional layered structure of “electricity-gas-water”, thereby eliminating the cross-bending of traditional pipelines, shortening the pipeline length, and improving compactness and maintenance accessibility.

[0033] (3) The modular container-type electric-thermal hydrogen co-production device of the application is provided with a three-layer flameproof wall which can effectively isolate the hydrogen production device and the electrical device and ensure the safety of the electrical device.

[0034] (4) The modular container-type electric-thermal hydrogen co-production device of the application is provided with a cable groove on the inner bottom surface of the box body, cables between the electrical device and the hydrogen production device are laid in the cable groove, and a cover plate is arranged on the top of the cable groove to prevent the alkaline electrolytic cell solution from splashing and corroding the cables and avoid hydrogen permeation into cabin A, thereby ensuring the safe operation of the electric-thermal hydrogen co-production device.

[0035] (5) The modular container-type electric-thermal hydrogen co-production device of the application is provided with a heat dissipation system arranged on the box body above the fuel cell, which can effectively cool the fuel cell and ensure the safe operation of the electric-thermal hydrogen co-production device.

[0036] (6) The modular container-type electric-thermal hydrogen co-production device of the application is provided with two exhaust fans respectively arranged on the top of cabin A and cabin C, which is conducive to ventilation and heat dissipation in cabin A and cabin C.

[0037] (7) The modular container type electrothermal hydrogen cogeneration device of the present application, the hydrogen storage device and the hydrogen production device are communicated through a pipeline, the pipeline is arranged on the inner top surface of the box body, the space can be effectively utilized, and the integration degree is improved.

[0038] (8) The modular container type electrothermal hydrogen cogeneration device of the present application, the hydrogen storage device and the fuel cell are communicated through a pipeline, the pipeline is arranged on the inner bottom surface of the box body, the space can be effectively utilized, and the integration degree is improved.

[0039] (9) The modular container type electrothermal hydrogen cogeneration device of the present application, the side wall of the box body is provided with a double-layer heat insulation layer, which can resist external extreme temperature and ensure safe operation of the electrothermal hydrogen cogeneration device. BRIEF DESCRIPTION OF DRAWINGS

[0040] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0041] Among them, 1-electric device, 2-hydrogen production device, 3-hydrogen storage device, 4-fuel cell, 5-heat dissipation system, 6-box body, 7-explosion-proof wall, 8-isolation plate. DETAILED DESCRIPTION

[0042] The present application will be described in detail below in conjunction with the drawings and examples.

[0043] The present embodiment provides a modular container type electrothermal hydrogen cogeneration device, as shown in the figure, which comprises a box body 6 and integrated inside the electric device 1, hydrogen production device 2, hydrogen storage device 3, fuel cell 4, explosion-proof wall 7, isolation plate 8 and grating platform. Figure 1

[0044] The box body 6 is horizontally placed, and the inside of the box body 6 is divided into cabin A, cabin B and cabin C along the length direction from one side to the other side; the inner bottom surface of cabin A and cabin B is provided with a cable groove for laying cables, and the top of the groove is provided with a cover plate for sealing;

[0045] The electric device 1 is installed in the cabin A at the end of the box body 6, which comprises a power distribution cabinet and a control cabinet; the power distribution cabinet converts renewable energy into direct current power supply; the control cabinet is electrically connected with the power distribution cabinet and is responsible for the start-stop control and operation protection of the device;

[0046] ​The explosion-proof wall 7 is detachably installed in the inside of the box 6; the cabin A is an independent and sealed space formed by the explosion-proof wall 7 and the box 6; the explosion-proof wall 7 is a three-layer structure, including: a heat insulation layer and two explosion-proof plates; the two explosion-proof plates are oppositely arranged, and the heat insulation layer is filled between the two explosion-proof plates; the explosion-proof pressure of the explosion-proof wall should be ≥1.5MPa; as an example, the explosion-proof plate adopts a 304 stainless steel plate with a thickness of 10mm, and the heat insulation layer is a ceramic fiber with a thickness of 50mm; as an example, the inner wall surface of the box 6 is provided with a sliding groove A, and the explosion-proof wall 7 is in sliding fit with the sliding groove A, so that the explosion-proof wall 7 is convenient to install and detach;

[0047] The hydrogen production device 2 is installed in the cabin B in the middle part of the box 6; in the embodiment, the interval between the hydrogen production device 2 and the electrical device 1 is not less than 0.5m; the hydrogen production device 2 includes: an alkaline electrolytic cell, a gas-liquid separator and a purification device; the alkaline electrolytic cell is installed on the inner bottom surface of the box 6; the gas-liquid separator is fixed on the alkaline electrolytic cell by a support frame (i.e. the alkaline electrolytic cell and the gas-liquid separator are arranged in an up-down manner); the purification device is arranged horizontally and parallel to the alkaline electrolytic cell and is installed on the inner bottom surface of the box 6; the electrolytic cell, the gas-liquid separator and the purification device are communicated through pipelines; the alkaline electrolytic cell is used for electrolyzing water into hydrogen and oxygen; the hydrogen generated after electrolysis is separated and purified through the gas-liquid separator and the purification device in sequence; in the embodiment, the input power of the alkaline electrolytic cell is 500kW; in the hydrogen production device, the hydrogen is separated and purified through the gas-liquid separator and the purification device in sequence; the alkaline electrolytic cell is connected with the power distribution cabinet of the electrical device through a cable, and a direct-current power source formed in the electrical device supplies power to the alkaline electrolytic cell; the cable is laid through a cable groove in the bottom of the box 6, so as to avoid the hydrogen in the hydrogen production device 2 flowing into the cabin A provided with the electrical device 1 and thus explosion; as an example, the heat and hydrogen cogeneration device further includes: a pH sensor and a neutralization device; a V-shaped flow guide groove is arranged on the inner bottom surface of the box 6 below the pipeline connection position of the alkaline electrolytic cell; the V-shaped flow guide groove is used for collecting the liquid leaked from the connecting pipeline of the alkaline electrolytic cell; the pH sensor is used for monitoring the pH of the leaked liquid in the flow guide groove in real time, and the neutralization device neutralizes according to the pH value of the solution; in the embodiment, the automatic neutralization device realizes neutralization by spraying a citric acid solution;

[0048] The isolation plate 8 is arranged in the inside of the box 6; the cabin B is a space surrounded by the isolation plate 8, the box 6 and the explosion-proof wall 7, and the hydrogen production device 2 is arranged in the cabin B; the isolation plate 8 is used for shielding the spatter of the alkali liquid in the alkaline electrolytic cell, so as to avoid corrosion or damage to the adjacent equipment (the hydrogen storage device 3 and the combustion power source 4); the isolation plate 8 adopts a corrosion-resistant polypropylene plate with a total thickness of 10mm and a temperature resistance of 120°C; the isolation plate 8 and the other end of the box 6 form a cabin C; as an example, the inner bottom surface of the box 6 is provided with a sliding groove B, and the isolation plate 8 is in sliding fit with the sliding groove B, so that the isolation plate 8 is convenient to install and detach;

[0049] The grid platform is used to divide the cabin C into two spaces, and is installed on the inner wall surface of the box body 6 and the partition plate 8; in this embodiment, the grid platform has an open area of ≥60%, and the support bears a load of ≤500 kg; as an example, the grid platform is a detachable structure;

[0050] The hydrogen storage device 3 is installed on the inner bottom surface of the box body 6 and is located below the grid platform; in this embodiment, the hydrogen storage device 3 adopts a magnesium-based solid-state hydrogen storage tank; a plurality of magnesium-based solid-state hydrogen storage tanks are stacked along the height direction of the box body 6; the hydrogen storage device 3 is in communication with the purification equipment in the hydrogen production device 2 through a pipeline, which is arranged on the inner top surface of the box body 6 and meets the pipeline avoidance principle; the purified hydrogen flows into the storage device 3 through the pipeline for storage for subsequent use; in this embodiment, the hydrogen storage device 3 has a large weight (total weight ≥3 t), and the low arrangement can improve the stability of the system; the grid platform facilitates the rapid discharge of hydrogen leaked from the hydrogen storage device 3;

[0051] As an example, the hydrogen storage device 3 is further provided with: a multi-stage hydrogen sensor, an emergency emptying valve and a nitrogen inerting system; the multi-stage hydrogen sensor is arranged on the inlet pipeline and the outlet pipeline of the hydrogen storage device 3 to monitor hydrogen leakage in real time; the emergency emptying valve is arranged on the outlet pipeline of the hydrogen storage device 3, and when the hydrogen concentration measured by the multi-stage hydrogen sensor reaches a certain value, the emergency emptying valve is automatically closed and an emptying program is started to discharge the hydrogen outside the box body 6; the nitrogen inerting system is arranged on the hydrogen storage device 3 to blow nitrogen into the hydrogen storage device 3 to dilute the hydrogen concentration to a safe range and eliminate ignition sources; the nitrogen is blown in to eliminate ignition sources inside the hydrogen storage device 3; in this embodiment, the detection accuracy of the multi-stage hydrogen sensor is 1 ppm, and the response time of the emergency emptying valve is ≤0.5 s;

[0052] The fuel cell 4 is installed on the grid platform through a support; the fuel cell 4 is in communication with the hydrogen storage device 3 through a pipeline arranged at the bottom of the box body 6, which meets the pipeline avoidance principle; a pressure reducing valve is arranged on the pipeline to control the pressure of the hydrogen; the hydrogen in the hydrogen storage device 3 enters the fuel cell 4 to be converted into electric energy through an electrochemical reaction and generate waste heat; due to the thermal air rising effect, the high arrangement of the fuel cell (i.e. arranged on the upper part of the box body 6) is beneficial to heat dissipation of the waste heat;

[0053] As an example, the electric heating hydrogen cogeneration device further comprises: a heat dissipation system 5; the heat dissipation system 5 is arranged on the box body 6 and is located above the fuel cell 4; the heat dissipation system 5 forcibly air-cools the fuel cell 4 so that the temperature of the electric pile is ≤65℃; in this embodiment, the air volume of the heat dissipation system is ≥2000 m 3 / h;

[0054] As an example, the side wall of the box body 6 is provided with a double-layer thermal insulation layer; the thermal insulation layer adopts polyurethane foaming; the thickness of the thermal insulation layer is preferably 50 mm;

[0055] As an example, the box 6 both ends (chamber A and chamber C) top are provided with exhaust fan (not shown in the drawing), for ventilation and heat dissipation; in this embodiment, the input power of exhaust fan is 500w;

[0056] As an example, the maintenance channel is provided between each two devices, so that the operator can replace the parts; the width of the maintenance channel is preferably 0.8m;

[0057] As an example, the electric heating hydrogen co-production device further comprises two cooling water circulation systems, which are respectively used for recovering the heat carried by hydrogen in the hydrogen production process and the waste heat of the fuel cell, so as to realize heating or secondary power generation; the two cooling water circulation systems are cooling water circulation system A and cooling water module B respectively;

[0058] The cooling water circulation system A comprises an electrolytic cell heat exchanger; the electrolytic cell heat exchanger is thermally coupled with the hydrogen production device 2; specifically, the two ends of the primary side of the electrolytic cell heat exchanger are respectively connected with the hydrogen gas outlet of the alkaline electrolytic cell and the inlet end of the gas-liquid separator; the secondary side of the electrolytic heat exchanger is respectively connected with the external cooling device, forming a circulation, and the heat carried by hydrogen is absorbed by the cooling water in the external cooling device and the heat transfer or storage is completed by the external cooling device;

[0059] The cooling water circulation system B comprises a cooling water pipeline of the fuel cell 4 and a heating pipeline of the hydrogen storage device 3; the cooling water outlet (i.e. the cooling water pipeline outlet) in the fuel cell 4 is communicated with the heating pipeline of the hydrogen storage device 3 to form a heat exchange loop; after the cooling water temperature is raised by the hydrogen storage device 3, the heated cooling water is introduced into the external heat exchange device to realize the recovery and storage of waste heat.

[0060] In summary, the above is only a preferred embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A modular containerized cogeneration unit for electricity, heat, and hydrogen, characterized in that, include: The enclosure (6) and the electrical equipment (1), hydrogen production device (2), hydrogen storage device (3), fuel cell (4), explosion-proof wall (7), isolation plate (8) and grid platform integrated therein; The interior of the box (6) is divided into compartments A, B and C along its length from one end to the other. The compartment A and compartment B are separated by an explosion-proof wall (7), and compartment B and compartment C are separated by an isolation plate (8); The grid platform is located inside compartment C, which is divided into upper and lower spaces. The electrical equipment (1) is located in compartment A, the hydrogen production equipment (2) is located in compartment B, the hydrogen storage equipment (3) is located in the lower part of compartment C, and the fuel cell (4) is located in the upper part of compartment C and is installed on the grid platform. The electrical device (1) is used to generate a DC power supply to power the hydrogen production device (2); the hydrogen production device (2) is used to produce hydrogen, which is stored in the hydrogen storage device (3) and used as fuel for the fuel cell (4).

2. The modular containerized cogeneration unit for electricity, heat, and hydrogen as described in claim 1, characterized in that, The hydrogen production device (2) includes: an alkaline electrolyzer, a gas-liquid separator, and a purification device; The alkaline electrolytic cell is installed on the inner bottom surface of the box (6). The gas-liquid separator is fixed above the alkaline electrolytic cell by a support frame. The purification device is arranged horizontally alongside the alkaline electrolytic cell and installed on the inner bottom surface of the box (6).

3. The modular containerized cogeneration unit for electricity, heat, and hydrogen as described in claim 1, characterized in that, The explosion-proof wall (7) has a three-layer structure, including: a heat insulation layer and two explosion-proof panels; Two explosion-proof panels are arranged opposite each other, and a heat insulation layer is filled between the two explosion-proof panels.

4. The modular containerized cogeneration unit for electricity, heat, and hydrogen as described in claim 1, characterized in that, The isolation plate (8) is made of polypropylene.

5. The modular containerized cogeneration unit for electricity, heat, and hydrogen as described in claim 1, characterized in that, The inner bottom surface of the box (6) is provided with a cable groove; The cable between the electrical device (1) and the hydrogen production device (2) is laid in the cable groove, and a cover plate is provided on the top of the cable groove.

6. The modular containerized cogeneration unit for electricity, heat, and hydrogen as described in claim 1, characterized in that, Also includes: Heat dissipation system (5); The heat dissipation system (5) is installed on the housing (6) and located above the fuel cell (4).

7. The modular containerized cogeneration unit for electricity, heat, and hydrogen as described in claim 1, characterized in that, Also includes: Two exhaust fans; The two exhaust fans are respectively installed on the top of compartment A and compartment C for ventilation and heat dissipation.

8. The modular containerized cogeneration unit for electricity, heat, and hydrogen as described in claim 1, characterized in that, The hydrogen storage device (3) is connected to the hydrogen production device (2) by a pipeline for transporting hydrogen; the pipeline is located on the inner top surface of the box (6).

9. The modular containerized cogeneration unit for electricity, heat, and hydrogen as described in claim 1, characterized in that, The hydrogen storage device (3) is connected to the fuel cell (4) by a pipeline for transporting hydrogen; the pipeline is located on the inner bottom surface of the housing (6).

10. A modular containerized cogeneration unit for electricity, heat, and hydrogen as described in any one of claims 1-9, characterized in that, The side wall of the box (6) is provided with a double-layer heat insulation layer.

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