Thermal management and waste heat utilization system for electrolytic bath

Abstract

The invention discloses an electrolytic bath heat management and waste heat utilization system, which belongs to the technical field of hydrogen energy preparation, and comprises a sealing box body, the sealing box body is filled with heat conduction oil, and the sealing box body is filled with the heat conduction oil; the electrolytic bath is positioned in the sealed box body, and the electrolytic bath is immersed by the heat-conducting oil; the circulating part comprises a circulating pipeline, a temperature control unit and a heat exchanger, the heat conduction oil inlet and the heat conduction oil outlet of the sealing box body are connected through the circulating pipeline, and the temperature control unit and the heat exchanger are both installed on the circulating pipeline. According to the invention, the whole electrolytic cell is immersed in the sealed box body filled with the heat conduction oil, accurate temperature control of the electrolytic cell is realized through forced circulation of the heat conduction oil, and the absorbed waste heat is transferred to the external heat exchanger for effective recycling, so that the operation efficiency and the stability of the electrolytic cell are improved, and the overall energy consumption of the system is remarkably reduced.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of hydrogen energy preparation, and particularly relates to an electrolytic tank heat management and waste heat utilization system. BACKGROUND

[0002] Electrolysis of water to produce hydrogen is an important way to realize green hydrogen energy conversion. However, in the electrolysis process, a considerable part of the electrical energy (about 20%-30%) will be converted into heat energy, causing the temperature of the electrolyte to rise. In order to ensure the stable operation of the electrolytic tank at the optimum temperature, a cooling system must be configured to remove this waste heat, which not only consumes additional energy but also causes energy waste.

[0003] In the prior art, the heat dissipation mode mainly depends on the setting of an internal cooling water circuit or external cooling treatment of the separated hydrogen and other products. For example, the patent with publication number CN120545403A proposes a heat management scheme, which connects multiple electrolytic devices in series by constructing a complex circulating water pipeline system to achieve heat transfer and dissipation. Another common scheme, as disclosed in publication number CN120330726A, is to integrate a phase change heat storage device in the electrolyte circulating pipeline, which can absorb the excess heat generated in the electrolysis process and release the stored heat energy when needed, thereby improving the energy recycling efficiency. However, the above existing schemes generally have problems such as complex system structure, indirect heat recovery path, and low overall energy efficiency, which limit their feasibility and economy in large-scale applications.

[0004] Therefore, the present application provides an electrolytic tank heat management and waste heat utilization system. SUMMARY

[0005] The present application overcomes the shortcomings of the prior art and provides an electrolytic tank heat management and waste heat utilization system to solve the problems in the prior art.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is as follows: an electrolytic tank heat management and waste heat utilization system, comprising

[0007] A sealed box body is filled with heat conducting oil, which fills the inside of the sealed box body;

[0008] An electrolytic tank is located inside the sealed box body and is immersed in the heat conducting oil;

[0009] A circulating part includes a circulating pipeline, a temperature control unit, and a heat exchanger. The circulating pipeline connects the heat conducting oil inlet and outlet of the sealed box body. The temperature control unit and the heat exchanger are installed on the circulating pipeline.

[0010] In a preferred embodiment of the present application, the temperature control unit comprises a heater and / or a cooler to keep the working temperature of the electrolytic cell within a preset range.

[0011] In a preferred embodiment of the present application, a heat energy utilization unit is further included, which is connected with the heat exchanger to utilize the heat exchanged by the heat exchanger.

[0012] In a preferred embodiment of the present application, the electrolytic cell is connected with an alkali inlet at one end and an alkali outlet at the other end.

[0013] In a preferred embodiment of the present application, the number of alkali outlets is two, one of which is an oxygen outlet and the other is a hydrogen outlet.

[0014] In a preferred embodiment of the present application, a circulating pump is arranged on the circulating pipeline to continuously circulate the heat conducting oil.

[0015] The present application solves the defects in the background art and has the following beneficial effects:

[0016] The electrolytic cell heat management and waste heat utilization system of the present application immerses the electrolytic cell as a whole in a sealed box filled with heat conducting oil, realizes accurate temperature control of the electrolytic cell through forced circulation of the heat conducting oil, and transfers the absorbed waste heat to an external heat exchanger for effective recycling. The present application not only improves the operation efficiency and stability of the electrolytic cell, but also realizes the step-by-step utilization of energy, significantly reducing the overall energy consumption of the system. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described below in conjunction with the drawings and embodiments.

[0018] Fig. 1 The figure is a schematic diagram of the overall structure of the preferred embodiment of the present application.

[0019] Fig. 2 The figure is a schematic diagram of the local structure of the preferred embodiment of the present application.

[0020] Fig. 3 The figure is a flowchart of the preferred embodiment of the present application.

[0021] In the figure: 10, sealed box; 11, heat conducting oil; 20, electrolytic cell; 21, alkali inlet; 22, alkali outlet; 30, circulating part; 31, circulating pipeline; 32, temperature control unit; 33, heat exchanger; 40, heat energy utilization unit; 50, circulating pump. DETAILED DESCRIPTION

[0022] The technical solutions of the present application will be described in detail below with reference to the drawings and specific embodiments, so that those skilled in the art can have a more in-depth understanding of the design concept and implementation manner of the present application, and can make practical application and promotion accordingly. It should be particularly pointed out that the following examples are only used to assist in explaining the structure and principle of the present application, and do not constitute a limitation on the protection scope of the present application.

[0023] The present embodiment provides a high-efficiency and reliable electrolytic cell thermal management and waste heat utilization system. The system completely immerses the electrolytic cell 20 in the sealed box body 10 filled with heat-conducting oil 11, uses the excellent heat-conducting performance and forced circulation mechanism of the heat-conducting oil 11 to realize accurate regulation and control of the working temperature of the electrolytic cell 20. At the same time, the system can effectively transfer the waste heat generated in the electrolysis process to the external heat exchange unit, and further realize energy recovery and reuse. This design not only significantly improves the operation efficiency and long-term working stability of the electrolytic cell 20, but also realizes the cascade utilization of heat energy, thereby greatly reducing the energy consumption of the entire system, meeting the requirements of green manufacturing and energy saving and environmental protection.

[0024] In combination with Figs. 1 to 3 As shown in the figure, the electrolytic cell thermal management and waste heat utilization system in the present embodiment includes three core parts: a sealed box body 10, an electrolytic cell 20, and a circulation part 30. The sealed box body 10 is filled with a sufficient amount of heat-conducting oil 11 to ensure that there is no gas remaining in the box, achieving a completely sealed environment; the electrolytic cell 20 is stably arranged inside the sealed box body 10 and completely immersed in the heat-conducting oil 11 to ensure uniform heat transfer and absorption; the circulation part 30 includes a circulation pipeline 31, a temperature control unit 32, and a heat exchanger 33. The circulation pipeline 31 connects the heat-conducting oil 11 inlet and outlet of the sealed box body 10 to form a closed loop. The temperature control unit 32 and the heat exchanger 33 are both installed on the circulation pipeline 31 to realize temperature regulation of the heat-conducting oil 11 and heat energy transfer.

[0025] In the present embodiment, the temperature control unit 32 can include one or a combination of a heater and a cooler, so as to heat or cool the heat-conducting oil 11 according to the actual working conditions, ensuring that the electrolytic cell 20 is always in the preset optimal working temperature range.

[0026] Further, the system also includes a heat energy utilization unit 40 connected with the heat exchanger 33. Through the built-in temperature sensor and intelligent control system linkage, the unit can accurately distribute the heat recovered in the heat exchanger 33 to multiple scenarios such as electrolytic cell preheating, caustic soda circulation heating, and plant heating. In specific implementation, the system can automatically adjust the heat distribution ratio according to different heat demand.

[0027] In terms of the structural design of the electrolytic cell 20, an alkali inlet 21 is provided at one end, and an alkali outlet 22 is provided at the other end to meet the feeding and discharging requirements of the electrolysis reaction. More specifically, the alkali outlet 22 can be provided with two outlets for oxygen and hydrogen, respectively, to facilitate the separation and collection of the gases produced by electrolysis.

[0028] In addition, a circulating pump 50 is provided on the circulation pipeline 31, which is driven by external power and can effectively push the heat transfer oil 11 to circulate continuously within the entire thermal management system. This design not only significantly improves the efficiency of heat conduction, but also ensures the uniformity of heat distribution and the accuracy of temperature control during long-term operation, thereby providing reliable protection for the stable operation and real-time thermal management of the entire system.

[0029] The electrolytic cell thermal management and waste heat utilization system proposed in this embodiment performs stably and efficiently during actual operation. After the system is started, the circulating pump 50 begins to operate and pushes the heat transfer oil 11 to continuously flow in the closed loop. The high-temperature heat transfer oil 11 absorbs a large amount of waste heat generated during the process from the inside of the electrolytic cell 20, and then flows out of the electrolytic cell 20 tank, first entering the heat exchanger 33. In the heat exchanger 33, the high-temperature oil exchanges heat with the externally supplied cold water, transferring the heat it carries to the cold water, thereby raising the temperature of the cold water and converting it into usable hot water to meet other heat demand, achieving energy cascade utilization. After completing the heat exchange, the temperature of the heat transfer oil 11 drops significantly, and then flows into the temperature control unit in the system. The temperature control unit is equipped with high-precision temperature sensors and intelligent controllers, which can monitor the temperature changes of the flowing oil in real time, and based on the set optimal temperature range, dynamically determine whether to start auxiliary cooling devices (such as air-cooled radiators or water-cooled modules) or electric heating equipment to accurately adjust the oil temperature. Through this closed-loop control mechanism, the system can ensure that the heat transfer oil 11 flowing back to the electrolytic cell 20 is always within the preset optimal temperature range, thereby ensuring the continuous, stable and efficient operation of the electrolytic cell 20.

[0030] In summary, the electrolytic cell thermal management and waste heat utilization system proposed in this embodiment successfully solves the technical bottleneck of traditional electrolytic cells 20 in heat dissipation and waste heat utilization through innovative structural design and thermal management strategies. The system uses heat transfer oil 11 as the heat conduction medium, not only achieving precise control of the working temperature of the electrolytic cell 20, but also through the synergistic action of the heat exchanger 33 and the heat energy utilization unit 40, converting the otherwise wasted waste heat into reusable energy, significantly improving the overall energy efficiency of the system. At the same time, the system has a compact structure, easy operation, high reliability and economy, providing strong support for the green and efficient development of hydrogen energy preparation technology.

[0031] Obviously, the above embodiments are merely example for clearly illustrating, and are not limitation to the embodiments. For ordinary skilled in the art, other different forms of changes or variations can be made on the basis of the above description. Here, all the embodiments need not and can not be exhausted. The obvious changes or variations derived therefrom are still within the scope of the present invention.

Claims

1. A thermal management and waste heat utilization system for an electrolytic cell, characterized in that, include A sealed housing (10) is filled with heat-conducting oil (11), which fills the interior of the sealed housing (10). An electrolytic cell (20) is located inside the sealed housing (10) and is submerged in the heat-conducting oil (11); The circulation section (30) includes a circulation pipe (31), a temperature control unit (32), and a heat exchanger (33). The circulation pipe (31) connects the inlet of the heat transfer oil (11) of the sealed box (10) to the outlet of the heat transfer oil (11). The temperature control unit (32) and the heat exchanger (33) are both installed on the circulation pipe (31).

2. The electrolytic cell thermal management and waste heat utilization system according to claim 1, characterized in that, The temperature control unit (32) includes a heater and / or a cooler to keep the operating temperature of the electrolytic cell (20) within a preset range.

3. The electrolytic cell thermal management and waste heat utilization system according to claim 1, characterized in that, It also includes a heat energy utilization unit (40), which is connected to the heat exchanger (33) to utilize the heat exchanged by the heat exchanger (33).

4. The electrolytic cell thermal management and waste heat utilization system according to claim 1, characterized in that, The electrolytic cell (20) is connected to an alkali inlet (21) at one end and an alkali outlet (22) at the other end.

5. The electrolytic cell thermal management and waste heat utilization system according to claim 4, characterized in that, There are two alkaline outlets (22), one of which is an oxygen outlet and the other is a hydrogen outlet.

6. The electrolytic cell thermal management and waste heat utilization system according to claim 1, characterized in that, A circulation pump (50) is installed on the circulation pipe (31) to continuously circulate the heat transfer oil (11).

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