Alkaline water electrolysis hydrogen production waste heat utilization equipment
By designing heat absorption and thermal conduction mechanisms in alkaline water electrolysis hydrogen production equipment, the stability and cost problems caused by heat dissipation in the electrolytic cell are solved, and efficient heat utilization and stability improvement of the electrolytic process are achieved.
Patent Information
- Application Number
- CN202421177080.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-28
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-28
AI Technical Summary
During the process of electrolytic hydrogen production in alkaline water, a large amount of heat energy generated inside the electrolytic cell leads to electrolyte evaporation, increased water consumption, increased energy costs and increased electrode corrosion risks, affecting the stability of the electrolytic oxygen production process.
An alkaline water electrolysis hydrogen waste heat utilization device is designed, including a heat absorption mechanism and a heat conduction mechanism. The heat absorption mechanism absorbs the heat outside the electrolytic box through the surround box and the water pump, and reuses heat through the energy storage box. The thermal conduction mechanism guides heat from the electrolytic box to the energy storage box through the thermal conduction ring, the thermal conduction plate and the thermal conduction plate to ensure uniform conduction and utilization of heat.
It effectively improves the electrolytic stability of the electrolytic cell, reduces energy costs, reduces the risk of electrode corrosion, and improves the heat exchange effect between the electrolytic box and the energy storage box.
Smart Images
Figure CN222455245U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of thermal energy utilization, and in particular to a device for utilizing waste heat from alkaline water electrolysis to produce hydrogen. Background Art
[0002] Alkaline water electrolysis is a common method of hydrogen production. It uses water electrolysis technology to decompose water into hydrogen and oxygen. This method is achieved by electrolysis in an alkaline electrolyte solution. A large amount of heat energy will be generated in the process of alkaline water electrolysis. Since the heat dissipation not only affects the temperature inside the processing workshop, but also causes a large amount of heat energy waste, it is necessary to utilize the heat.
[0003] In the related art, in the process of producing hydrogen by alkaline water electrolysis, it is generally carried out inside an electrolytic cell. Alkaline water electrolysis usually consists of two electrodes, namely an anode and a cathode. A voltage is applied between the anode and the cathode, so that current passes through the electrolyte solution. At the anode, water undergoes an oxidation reaction to generate oxygen and hydroxide ions. At the cathode, the hydroxide ions accept electrons and are reduced to hydrogen, thereby performing oxygen production processing.
[0004] However, in the current process of hydrogen production by alkaline water electrolysis, a large amount of heat energy is generated when electrolyzing oxygen inside the electrolyzer. Excessively high temperatures may cause electrolyte evaporation and increased water consumption, while also increasing energy costs and the risk of electrode corrosion, affecting the stability of the electrolytic oxygen production process and increasing costs. Utility Model Content
[0005] In order to make up for the above deficiencies, the utility model provides an alkaline water electrolysis hydrogen production waste heat utilization device that overcomes the above technical problems or at least partially solves the above problems.
[0006] The utility model is achieved in this way:
[0007] The utility model provides an alkaline water electrolysis hydrogen production waste heat utilization device, comprising a protection box, an electrolysis box is installed inside the protection box, and a controller is installed on the front side of the protection box;
[0008] A heat absorbing mechanism, the heat absorbing mechanism comprising:
[0009] Surrounding box; the surrounding box is fixedly connected to the outside of the electrolytic box, and the outside of the surrounding box is fixedly connected with a temperature insulation cover;
[0010] A water pump; the water pump is installed at the bottom of the front side of the protection box, the input end of the water pump is connected to the surrounding box, the output end of the water pump is fixedly connected to a connecting pipe, and the water pump is electrically connected to the controller through a wire;
[0011] Energy storage box; the energy storage box is installed on the left side of the electrolytic box, and a peripheral box is installed on the outside of the energy storage box;
[0012] Heat conducting mechanism; the heat conducting mechanism is fixedly connected to the surface of the electrolytic box and the energy storage box respectively.
[0013] In a preferred embodiment, the heat-conducting mechanism includes a heat-conducting ring, a heat-conducting plate and a heat-conducting sheet. The heat-conducting ring is fixedly connected to the surface of the electrolytic box and the energy storage box, respectively. The heat-conducting plate is fixedly connected to the bottom of the electrolytic box and the energy storage box, respectively. The heat-conducting sheet is fixedly connected to the inner side of the heat-conducting ring.
[0014] In a preferred solution, a rotating rod is installed on the outer side of the heat conducting plate, a spoiler is fixedly connected to the surface of the rotating rod, and a plurality of spoilers are fixedly connected, and the spoilers are distributed in a circular shape with equal distances.
[0015] In a preferred solution, a rotation groove is provided on the outer side of the heat conducting plate, a rotation seat is movably connected inside the rotation groove, and the outer side of the rotation seat is fixedly connected to the inner side of the rotation rod.
[0016] In a preferred solution, a liquid cavity located outside the heat-conducting ring is formed inside the peripheral box, a vacuum cavity located outside the liquid cavity is formed inside the peripheral box, and the left side of the connecting pipe is connected to the liquid cavity.
[0017] In a preferred embodiment, a connecting tube is fixedly connected to the top of the rear side of the outer box, the left side of the front side of the connecting tube is connected to the liquid chamber, the right side of the front side of the connecting tube is connected to the surrounding box, and the rear sides of the electrolytic box and the energy storage box surface are fixedly connected with temperature sensors, and the temperature sensors are electrically connected to the controller through wires.
[0018] In a preferred solution, a closing seat is installed on the front and rear sides of the top of the protection box and the peripheral box, a closing cover is movably connected to the outer side of the closing seat, and a rubber ring is fixedly connected to the bottom of the closing cover.
[0019] In a preferred embodiment, a magnetic strip is embedded in the outer side of the closing seat, and magnetic strips are embedded in both sides of the inner wall of the closing cover, and the inner side of the magnetic strip is magnetically connected to the outer side of the magnetic strip.
[0020] The utility model provides an alkaline water electrolysis hydrogen production waste heat utilization device, and its beneficial effects include:
[0021] 1. By setting up a heat absorption mechanism, when the protection box cooperates with the electrolytic box, the heat exchange liquid inside the box can be surrounded to absorb and transfer the external heat when the electrolytic box is working, so as to avoid the surface temperature of the electrolytic box being difficult to control and transfer when working, resulting in instability of the working parts inside the electrolytic cell, thereby improving the electrolytic stability of the electrolytic cell and reducing costs.
[0022] 2. By setting up a heat conduction mechanism, the heat in the flow of the heat exchange liquid can be conducted when the electrolytic box and the energy storage box are working, so that the heat of the heat exchange liquid is evenly transferred from the outside of the electrolytic box to the outside of the energy storage box for utilization, avoiding uneven heat exchange when the electrolytic box and the energy storage box exchange heat, thereby improving the heat exchange effect between the electrolytic box and the energy storage box.
[0023] 3. By setting the rotating rod and the spoiler, the heat exchange liquid inside the heat conduction ring can be rotated and disturbed when the heat conduction ring cooperates with the electrolytic box and the energy storage box, so as to avoid the heat exchange liquid having difficulty in contacting the heat conduction ring during flow and heat exchange, resulting in uneven heat exchange, thereby improving the heat conduction effect of the heat conduction ring. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.
[0025] Figure 1 It is an overall stereogram provided by the embodiment of the utility model;
[0026] Figure 2 A schematic diagram of a three-dimensional cross-sectional structure of an enclosing box provided in an embodiment of the utility model;
[0027] Figure 3 A schematic diagram of a three-dimensional cross-sectional structure of a closing cover provided in an embodiment of the utility model;
[0028] Figure 4 A schematic diagram of a three-dimensional cross-sectional structure of a guide vane provided in an embodiment of the utility model;
[0029] In the figure: 1. protection box; 2. electrolytic box; 3. controller; 4. surrounding box; 5. insulation box; 6. water pump; 7. connecting pipe; 8. energy storage box; 9. outer box; 10. heat conduction ring; 11. heat conduction plate; 12. heat conduction sheet; 13. rotating rod; 14. spoiler; 15. rotating groove; 16. rotating seat; 17. liquid chamber; 18. vacuum chamber; 19. connecting pipe; 20. temperature sensor; 21. closing seat; 22. closing cover; 23. rubber ring; 24. magnetic strip; 25. magnetic strip. DETAILED DESCRIPTION
[0030] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] Reference Figure 1-Figure 4 The utility model provides a technical solution: an alkaline water electrolysis hydrogen production waste heat utilization device, including a protection box 1 and a heat absorption mechanism, an electrolytic box 2 is installed inside the protection box 1, and a controller 3 is installed on the front side of the protection box 1. When the protection box 1 cooperates with the electrolytic box 2 to perform electrolytic oxygen production, the heat exchange liquid inside the box 4 can be surrounded to absorb and transfer the heat emitted from the outside when the electrolytic box 2 is working, so that the staff can reuse the heat energy on the outside of the electrolytic box 2 when it is working according to actual conditions, avoiding the situation that the surface temperature of the electrolytic box 2 is difficult to control and transfer when it is working, resulting in instability of the working parts inside the electrolytic cell, thereby improving the electrolytic stability of the electrolytic cell and reducing costs.
[0032] Reference Figure 1-Figure 4 In a preferred embodiment, the heat absorption mechanism includes a surrounding box 4, which is fixedly connected to the outside of the electrolytic box 2, and a temperature insulation cover 5 is fixedly connected to the outside of the surrounding box 4. A water pump 6 is installed at the bottom of the front side of the protection box 1, and the input end of the water pump 6 is connected to the surrounding box 4. The output end of the water pump 6 is fixedly connected to a connecting pipe 7. The water pump 6 is electrically connected to the controller 3 through a wire. An energy storage box 8 is installed on the left side of the electrolytic box 2, and an outer box 9 is installed on the outside of the energy storage box 8. The heat conduction mechanism is fixedly connected to the surface of the electrolytic box 2 and the energy storage box 8 respectively. When the protection box 1 cooperates with the electrolytic box 2 to perform electrolytic oxygen production, the heat exchange fluid inside the surrounding box 4 absorbs the heat emitted from the outside of the electrolytic box 2. At this time, the controller 3 starts the water pump 6 to transfer the heat exchange fluid inside the surrounding box 4 to the energy storage box 8. The heat is transported to the outside to exchange heat with the energy storage box 8. At this time, the staff can reuse the heat through the energy storage box 8 according to actual application requirements. The heat conduction mechanism includes a heat conduction ring 10, a heat conduction plate 11 and a heat conduction sheet 12. The heat conduction ring 10 is respectively fixedly connected to the surface of the electrolytic box 2 and the energy storage box 8, the heat conduction plate 11 is respectively fixedly connected to the bottom of the electrolytic box 2 and the energy storage box 8, and the heat conduction sheet 12 is fixedly connected to the inner side of the heat conduction ring 10. When the electrolytic box 2 and the energy storage box 8 are working, the heat in the flow process of the heat exchange liquid can be conducted, so that the heat of the heat exchange liquid is evenly transferred from the outside of the electrolytic box 2 to the outside of the energy storage box 8 for utilization, thereby avoiding uneven heat exchange when the electrolytic box 2 and the energy storage box 8 are exchanged, thereby improving the heat exchange effect between the electrolytic box 2 and the energy storage box 8.
[0033] Reference Figure 4 In a preferred embodiment, a rotating rod 13 is installed on the outer side of the heat conductive sheet 12, and a spoiler 14 is fixedly connected to the surface of the rotating rod 13. A plurality of spoilers 14 are fixedly connected, and the spoilers 14 are distributed in a ring-shaped and equidistant manner. When the heat conductive ring 10 cooperates with the electrolytic box 2 and the energy storage box 8 to work, the heat exchange liquid inside the heat conductive ring 10 can be rotated and disturbed to avoid the heat exchange liquid from being difficult to contact with the heat conductive ring 10 during flow and heat exchange, resulting in uneven heat exchange, thereby improving the heat conduction effect of the heat conductive ring 10. A rotating groove 15 is provided on the outer side of the heat conductive sheet 12, and a rotating seat 16 is movably connected inside the rotating groove 15. The outer side of the rotating seat 16 is fixedly connected to the inner side of the rotating rod 13. When the heat conductive sheet 12 cooperates with the rotating rod 13 to work, the rotating rod 13 and the heat conductive sheet 12 can be rotatably connected to avoid the rotating rod 13 being separated from the heat conductive sheet 12 during operation, thereby improving the working stability of the rotating rod 13.
[0034] Reference Figure 2 In a preferred embodiment, a liquid cavity 17 located outside the heat-conducting ring 10 is provided inside the peripheral box 9, a vacuum cavity 18 located outside the liquid cavity 17 is provided inside the peripheral box 9, and the left side of the connecting pipe 7 is connected to the liquid cavity 17. When the heat exchange liquid filled in the surrounding box 4 is working, a space can be provided for the heat exchange liquid to contact with the energy storage box 8 to release heat, and the energy storage box 8 can be vacuum-insulated to avoid the situation that the energy storage box 8 is difficult to exchange heat and keep warm when working, thereby improving the heat exchange effect and insulation performance of the energy storage box 8. A connecting pipe 19 is fixedly connected to the top of the rear side of the peripheral box 9, and the front side of the connecting pipe 19 is connected to the connecting pipe 19. The left side is connected with the liquid cavity 17, the right side of the front side of the connecting pipe 19 is connected with the surrounding box 4, and the rear sides of the surfaces of the electrolytic box 2 and the energy storage box 8 are fixedly connected with a temperature sensor 20, and the temperature sensor 20 is electrically connected to the controller 3 through a wire. When the water pump 6 cooperates with the surrounding box 4 and the liquid cavity 17 to work, a circulating heat exchange space can be provided for the heat exchange liquid inside the liquid cavity 17 and the surrounding box 4, and the internal temperature of the surrounding box 4 and the liquid cavity 17 during the heat exchange operation can be monitored, so as to prevent the surrounding box 4 and the liquid cavity 17 from being difficult to connect and circulate when working, thereby improving the heat exchange cycle control effect between the surrounding box 4 and the liquid cavity 17.
[0035] Reference Figure 3In a preferred embodiment, a closing seat 21 is installed on the front and rear sides of the top of the protective box 1 and the peripheral box 9, and a closing cover 22 is movably connected to the outer side of the closing seat 21, and a rubber ring 23 is fixedly connected to the bottom of the closing cover 22. When the electrolytic box 2 and the energy storage box 8 are working, a medium for closing the electrolytic box 2 and the energy storage box 8 can be provided to the user, thereby avoiding the difficulty in closing the electrolytic box 2 and the energy storage box 8 when they are in use, thereby improving the convenience of closing the electrolytic box 2 and the energy storage box 8. A magnetic strip 24 is embedded and connected to the outer side of the closing seat 21, and magnetic strips 25 are embedded and connected on both sides of the inner wall of the closing cover 22. The inner side of the magnetic strip 25 is magnetically connected to the outer side of the magnetic strip 24. When the closing seat 21 cooperates with the closing cover 22 to work, magnetic attraction positioning work can be performed between the closing seat 21 and the closing cover 22, thereby avoiding the difficulty in closing and positioning the closing cover 22 when it is in use, thereby improving the convenience of positioning the closing cover 22.
[0036] Specifically, the working process or working principle of the alkaline water electrolysis hydrogen production waste heat utilization device is as follows: when in use, the wire connects the controller 3 to the external power supply, so that the controller 3 supplies power to the water pump 6 and the temperature sensor 20, and then according to the actual electrolysis oxygen production demand, the electrolyte solution is added to the electrolytic box 2, and the material to be heated is added to the energy storage box 8. Subsequently, the hand-held closing cover 22 drives the rubber ring 23 to contact the protection box 1 and the peripheral box 9, and the electrolytic box 2 and the energy storage box 8 are closed and sealed. At this time, the closing seat 21 is closed to the closing cover 22. The closing cover 22 performs the closing limit stabilization work. At the same time, the magnetic strip 25 follows the movement of the closing cover 22 and contacts the magnetic strip 24 to perform the magnetic attraction positioning work between the closing cover 22 and the closing seat 21. Then, when the electrolytic oxygen production work is performed inside the electrolytic box 2, the water pump 6 and the temperature sensor 20 are started by the controller 3. After the water pump 6 is started, the heat exchange liquid inside the surrounding box 4 is sucked and transported to the inside of the liquid cavity 17 through the connecting pipe 7. Since the heat exchange liquid between the liquid cavity 17 and the surrounding box 4 is connected and flows through the connecting pipe 19, during this process, the inside of the liquid cavity 17 The heat exchange liquid is sucked by the water pump 6 to transfer from the surrounding box 4 to the liquid chamber 17. The heat exchange liquid in the liquid chamber 17 enters the surrounding box 4 through the connecting pipe 19, and circulates in sequence to absorb and transfer the heat emitted from the outside of the electrolytic box 2. At the same time, the heat conduction ring 10 cooperates with the heat conduction plate 11 and the heat conduction sheet 12 to conduct heat to the flowing heat exchange liquid, so that the heat outside the electrolytic box 2 is better transferred to the energy storage box 8, and the material to be heated added to the energy storage box 8 is heated. At this time, the spoiler 14 is affected by the flow force of the heat exchange liquid. The rotation of the rotating rod 13 is driven by the response to rotate, and the heat exchange liquid in the flow process is rotated to disturb the flow, so that the heat exchange liquid is fully in contact with the heat conductive ring 10 to absorb and exchange heat. At the same time, the rotating shaft follows the rotating rod 13 to rotate inside the rotating groove 15, and the rotating rod 13 and the heat conductive plate 12 are rotationally connected. When the water pump 6 sucks the circulating heat exchange liquid, the temperature sensor 20 surrounds the box 4 and the temperature of the heat exchange liquid inside the liquid cavity 17 to monitor the temperature in real time, and transmits the monitored temperature to the controller 3 for display, so that the staff can observe.
[0037] It should be noted that the electrolytic box 2, controller 3, water pump 6 and temperature sensor 20 are devices or equipment existing in the prior art, or are devices or equipment that can be realized in the prior art. Their power supply, specific composition and principles are clear to those skilled in the art, so they will not be described in detail.
Claims
1. An alkaline water electrolysis hydrogen production waste heat utilization device, comprising a protection box (1), an electrolysis box (2) is installed inside the protection box (1), and a controller (3) is installed on the front side of the protection box (1), characterized in that ； A heat absorbing mechanism, the heat absorbing mechanism comprising: A surrounding box (4); the surrounding box (4) is fixedly connected to the outside of the electrolysis box (2), and a temperature insulation cover (5) is fixedly connected to the outside of the surrounding box (4); a water pump (6); the water pump (6) is mounted on the bottom of the front side of the protection box (1); an input end of the water pump (6) is connected to the surrounding box (4); an output end of the water pump (6) is fixedly connected to a connecting pipe (7); and the water pump (6) is electrically connected to the controller (3) via a wire; An energy storage box (8); the energy storage box (8) is installed on the left side of the electrolytic box (2), and an outer box (9) is installed on the outer side of the energy storage box (8); Heat conducting mechanism; the heat conducting mechanism is respectively fixedly connected to the surface of the electrolytic box (2) and the energy storage box (8).
2. The alkaline water electrolysis hydrogen production waste heat utilization device according to claim 1, characterized in that: The heat conduction mechanism comprises a heat conduction ring (10), a heat conduction plate (11) and a heat conduction sheet (12); the heat conduction ring (10) is fixedly connected to the surface of the electrolytic box (2) and the energy storage box (8), respectively; the heat conduction plate (11) is fixedly connected to the bottom of the electrolytic box (2) and the energy storage box (8), respectively; and the heat conduction sheet (12) is fixedly connected to the inner side of the heat conduction ring (10).
3. The alkaline water electrolysis hydrogen production waste heat utilization equipment according to claim 2, characterized in that: A rotating rod (13) is installed on the outer side of the heat conducting sheet (12), a spoiler (14) is fixedly connected to the surface of the rotating rod (13), a plurality of spoilers (14) are fixedly connected, and the plurality of spoilers (14) are distributed in a circular shape at equal distances.
4. The alkaline water electrolysis hydrogen production waste heat utilization device according to claim 3, characterized in that: A rotating groove (15) is provided on the outer side of the heat conducting plate (12), a rotating seat (16) is movably connected inside the rotating groove (15), and the outer side of the rotating seat (16) is fixedly connected to the inner side of the rotating rod (13).
5. The alkaline water electrolysis hydrogen production waste heat utilization equipment according to claim 2, characterized in that: A liquid cavity (17) located outside the heat-conducting ring (10) is provided inside the peripheral box (9), a vacuum cavity (18) located outside the liquid cavity (17) is provided inside the peripheral box (9), and the left side of the connecting pipe (7) is connected to the liquid cavity (17).
6. The alkaline water electrolysis hydrogen production waste heat utilization equipment according to claim 5, characterized in that: A connecting pipe (19) is fixedly connected to the top of the rear side of the peripheral box (9); the left side of the front side of the connecting pipe (19) is connected to the liquid chamber (17); the right side of the front side of the connecting pipe (19) is connected to the surrounding box (4); and the rear sides of the surfaces of the electrolytic box (2) and the energy storage box (8) are fixedly connected to temperature sensors (20); the temperature sensors (20) are electrically connected to the controller (3) via a wire.
7. The alkaline water electrolysis hydrogen production waste heat utilization equipment according to claim 1, characterized in that: A closing seat (21) is installed on the front and rear sides of the top of the protection box (1) and the peripheral box (9); a closing cover (22) is movably connected to the outer side of the closing seat (21); and a rubber ring (23) is fixedly connected to the bottom of the closing cover (22).
8. The alkaline water electrolysis hydrogen production waste heat utilization equipment according to claim 7, characterized in that: The outer side of the closing seat (21) is inlaid with a magnetic strip (24), and both sides of the inner wall of the closing cover (22) are inlaid with magnetic strips (25), and the inner side of the magnetic strip (25) is magnetically connected to the outer side of the magnetic strip (24).