Electrode foil production line waste heat utilization system
By using the high-temperature bath liquid from the front-end formation tank to heat the rear-end tank in the electrode foil production line, and combining it with a temperature control system consisting of electric valve groups and temperature measuring elements, the energy consumption problem of temperature control in the formation tank and processing tank is solved, achieving waste heat utilization and cost reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- URUMQI ZHONGRONG ELECTRONIC MATERIAL TECH CO LTD
- Filing Date
- 2025-04-30
- Publication Date
- 2026-05-19
AI Technical Summary
Existing electrode foil production lines require additional energy consumption to maintain the temperature of the formation and processing tanks, which increases production costs.
The high-temperature liquid in the front-end formation tank is used as a heat exchange medium to heat the rear-end formation tank and processing tank. By setting up electric valve groups and temperature measuring elements in combination with the temperature control system, waste heat can be utilized without increasing the number of heat exchangers or energy consumption.
It achieves stable temperature control on the production line, reduces production costs, and does not require additional heat exchangers or energy consumption.
Smart Images
Figure CN224262320U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrode foil formation production, specifically to a waste heat utilization system for an electrode foil production line. Background Technology
[0002] When the electrode foil formation production line is working, the raw material for etching foil needs to pass through multiple formation tanks and treatment tanks containing acidic solutions. At the same time, high voltage and high current direct current are applied in the tanks as needed to achieve the purpose of forming a dense oxide film on the surface of the etched foil, so that the etched foil is finally transformed into a formed foil. During this process, each formation tank and treatment tank on the production line must be maintained at a specific temperature.
[0003] During the chemical formation production line, the high current in the front-end formation tank causes a rapid rise in the tank solution temperature. Once the set temperature is reached, further temperature increases necessitate the use of cooling water for heat exchange and cooling. In contrast, the current in the rear-end formation and processing tanks is lower. To maintain the required reaction temperature, external heat sources such as electric heating, steam, or hot water are supplied for heating or heat exchange. Steam heating involves installing steam coils at the bottom of the formation or processing tank, circulating steam at a specific pressure and temperature to heat the nearby solution. A pump continuously circulates the solution outside the tank, gradually equalizing the temperature until the set temperature is reached. Electric heating involves installing electric heaters at the bottom of the formation or processing tank. These heaters heat the nearby solution, and a pump continuously circulates the solution outside the tank, gradually equalizing the temperature until the set temperature is reached. Hot water heating involves installing a double-pass plate heat exchanger outside the formation tank or treatment tank. High-temperature hot water flows into one end of the plate heat exchanger, while a pump outside the tank continuously circulates the tank solution to the other end. As the hot water and tank solution convection within the plate heat exchanger, the tank solution is heated, eventually reaching the set temperature over time. However, both methods require additional energy consumption, thus increasing production costs.
[0004] Patent CN219083832U discloses a heat recovery device suitable for a chemical foil production line. This device collects high-temperature steam generated in the electrolytic cell and drying furnace of the chemical foil production line, and then exchanges heat with pure water used for cleaning. This allows the steam to be collected and cooled, while also heating the pure water used for cleaning to a suitable temperature. However, this device is not used to maintain the temperature stability of the chemical forming tank and the processing tank.
[0005] Patent CN201655559U discloses a thermal energy recycling device for electrode foil formation equipment. This device uses the aforementioned hot water heating method, but it adds a secondary heat exchange system to the bath liquid and uses reverse osmosis permeate or mixed bed permeate as another circulating cooling medium, which increases the number of heat exchangers on the production line. Utility Model Content
[0006] The purpose of this invention is to provide a waste heat utilization system for an electrode foil production line. It uses the high-temperature front-end forming liquid in the front-end forming tank as a heat exchange medium to heat the rear-end forming tank and the rear-end processing tank. This not only realizes the utilization of waste heat from the front-end forming tank of the production line, but also eliminates the need to increase the number of heat exchangers or increase energy consumption, thereby reducing production costs.
[0007] The objective of this utility model is achieved through the following technical solution:
[0008] A waste heat utilization system for an electrode foil production line includes a front-end forming tank, a rear-end forming tank, a rear-end processing tank, a front-end forming liquid output pipeline, a return pipeline, a first heat exchanger, and a second heat exchanger. The input end of the front-end forming liquid output pipeline is connected to the outlet of the corresponding front-end forming tank, and the output end has a first front branch and a second front branch. The first front branch is connected to the heat exchange medium inlet of the corresponding first heat exchanger, and the second front branch is connected to the heat exchange medium inlet of the corresponding second heat exchanger. The output end of the return pipeline is connected to the return port of the corresponding front-end forming tank, and the input end has... There is a first reflux branch and a second reflux branch. The first reflux branch is connected to the heat exchange medium outlet on the corresponding first heat exchanger, and the second reflux branch is connected to the heat exchange medium outlet on the corresponding second heat exchanger. The rear formation tank is connected to the formation tank liquid inlet on the corresponding first heat exchanger through the formation liquid output pipeline and to the formation tank liquid outlet on the corresponding first heat exchanger through the formation liquid return pipeline. The rear treatment tank is connected to the treatment tank liquid inlet on the corresponding second heat exchanger through the treatment liquid output pipeline and to the treatment tank liquid outlet on the corresponding second heat exchanger through the treatment liquid return pipeline.
[0009] Electric valve groups are provided on both the first and second front-end branches, and temperature measuring elements are provided in both the rear-end formation tank and the rear-end processing tank. The electric valve groups and temperature measuring elements are connected to the production line temperature control system.
[0010] The front-end formation tank is equipped with a temperature measuring element that is connected to the production line temperature control system.
[0011] Both the formation liquid output pipeline and the processing liquid output pipeline are equipped with circulation pumps.
[0012] The first heat exchanger is a plate heat exchanger with a heat exchange area of A1, and the second heat exchanger is a shell-and-tube heat exchanger with a heat exchange area of A2.
[0013] The advantages and positive effects of this utility model are as follows:
[0014] 1. This utility model utilizes the high-temperature front-end forming liquid in the front-end forming tank as a heat exchange medium to heat the rear-end forming tank and the rear-end processing tank. This not only realizes the utilization of waste heat from the front-end forming tank of the production line, but also eliminates the need to increase the number of heat exchangers or increase energy consumption, thereby reducing production costs.
[0015] 2. This utility model can utilize the production line temperature control system to determine whether to open the electric valve group of the corresponding pipeline to achieve heat exchange based on the temperature detection of the temperature measuring elements in the front-end formation tank, the back-end processing tank and the back-end formation tank. This can further ensure the stable temperature control of the entire production line.
[0016] 3. This utility model has been tested in actual production. Based on the size of the front-end formation tank and the temperature of the liquid in the tank, each front-end formation tank can exchange heat for 1 to 3 back-end tanks (back-end formation tank and back-end processing tank), which can meet the operating needs of the production line. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model.
[0018] Figure 2 for Figure 1 Diagram of piping connections for the mid-to-rear-end processing tank.
[0019] Figure 3 This is a schematic diagram of the structure of a steam heating method in the prior art.
[0020] Figure 4 This is a schematic diagram of the structure of an existing electric heating method.
[0021] Figure 5 This is a schematic diagram of the structure of a hot water heating method in the prior art.
[0022] Among them, 1 is the front-end formation tank, 2 is the rear-end processing tank, 201 is the processing liquid output pipeline, 202 is the processing liquid return pipeline, 3 is the rear-end formation tank, 301 is the formation liquid output pipeline, 302 is the formation liquid return pipeline, 4 is the front-end formation liquid output pipeline, 401 is the first front-end branch, 402 is the second front-end branch, 403 is the electric valve group, 5 is the second heat exchanger, 6 is the first heat exchanger, 7 is the return pipeline, 701 is the first return branch, 702 is the second return branch, 8 is the circulating pump, 9 is the temperature control module, 10 is the temperature measuring element, 11 is the steam coil, 12 is the electric heater, and 13 is the third heat exchanger. Detailed Implementation
[0023] The present invention will now be described in further detail with reference to the accompanying drawings.
[0024] like Figures 1-2 As shown, this utility model includes a front-end formation tank 1, a rear-end formation tank 3, a rear-end processing tank 2, a front-end formation liquid output pipe 4, a return pipe 7, a first heat exchanger 6, and a second heat exchanger 5. The input end of the front-end formation liquid output pipe 4 is connected to the outlet of the corresponding front-end formation tank 1, and the output end is provided with a first front-end branch 401 and a second front-end branch 402. The first front-end branch 401 is connected to the heat exchange medium inlet of the corresponding first heat exchanger 6, and the second front-end branch 402 is connected to the heat exchange medium inlet of the corresponding second heat exchanger 5. The output end of the return pipe 7 is connected to the return port of the corresponding front-end formation tank 1, and the input end is provided with a first return branch... The first return branch 701 is connected to the heat exchange medium outlet on the corresponding first heat exchanger 6, and the second return branch 702 is connected to the heat exchange medium outlet on the corresponding second heat exchanger 5. The rear formation tank 3 is connected to the formation tank liquid inlet on the corresponding first heat exchanger 6 through the formation liquid output pipe 301 and to the formation tank liquid outlet on the corresponding first heat exchanger 6 through the formation liquid return pipe 302. The rear processing tank 2 is connected to the processing tank liquid inlet on the corresponding second heat exchanger 5 through the processing liquid output pipe 201 and to the processing tank liquid outlet on the corresponding second heat exchanger 5 through the processing liquid return pipe 202.
[0025] like Figures 1-2 As shown in this embodiment, electric valve assemblies 403 are provided on both the first front-end branch 401 and the second front-end branch 402. Temperature sensing elements 10 are provided in both the rear-end formation tank 3 and the rear-end processing tank 2. Both the electric valve assemblies 403 and the temperature sensing elements 10 are connected to the production line temperature control system 9. When the temperature of the bath liquid inside the rear-end formation tank 3 and the rear-end processing tank 2 is lower than the set requirement, the production line temperature control system 9 controls the corresponding electric valve assembly 403 to open and output the high-temperature front-end formation liquid for heat exchange. Alternatively, a temperature sensing element 10 can also be installed in the front-end formation tank 1 as needed. When the temperature of the bath liquid in the front-end formation tank 1 is too high, the production line temperature control system 9 can also control the corresponding electric valve assembly 403 to open and cool the front-end formation liquid. Both the electric valve assembly 403 and the temperature sensing element 10 are commercially available products.
[0026] like Figure 2 As shown in this embodiment, both the formation liquid output pipeline 301 and the processing liquid output pipeline 201 are equipped with a circulation pump 8 for driving the formation liquid or processing liquid to circulate and exchange heat.
[0027] In this embodiment, the first heat exchanger 6 corresponding to the rear formation tank 3 is a stainless steel plate heat exchanger with a heat exchange area of A1 = 3 square meters, and the second heat exchanger 5 corresponding to the rear processing tank 2 is a plastic shell-and-tube heat exchanger with a heat exchange area of A2 = 8 square meters. Both the first heat exchanger 6 and the second heat exchanger 5 are commercially available products.
[0028] In addition, a drive pump can be installed on the front-end formation liquid output pipeline 4 as needed to increase the output flow rate of the front-end formation liquid, thereby improving the heat exchange efficiency.
[0029] The working principle of this utility model is as follows:
[0030] Conventional heating methods in existing technologies, such as Figures 3-5 As shown, where Figure 3 The diagram shows a steam heating method, which utilizes the steam coil 11 within the tank for heating. Figure 4 The diagram shows an electric heating method, which utilizes an electric heater 12 within the tank for heating. Figure 5 The diagram shows a hot water heating method, which uses a third heat exchanger 13 with hot water as the heat exchange medium to heat the tank liquid.
[0031] This invention takes into account the temperature difference between the front-end formation tank 1 and the rear-end formation tank 3 and the rear-end processing tank 2. It uses the front-end formation liquid with a higher temperature in the front-end formation tank 1 as a heat exchange medium to heat the rear-end formation tank 3 and the rear-end processing tank 2. This not only realizes the utilization of the waste heat of the front-end formation tank 1 in the production line, but also eliminates the need to increase the number of heat exchangers or increase energy consumption, thereby reducing production costs.
[0032] In the electrode foil formation process, the required process temperature for the reaction in the front-end formation tank 1 is generally between 85 and 95°C. Simultaneously, the current applied to the foil in these tanks (current negative electrodes) is maintained at approximately 500A to 1200A, with a voltage greater than 200V, thus continuously generating heat. The temperature inside the tank rises continuously until it reaches the boiling point, requiring cooling. Meanwhile, the process temperature in the depolarization back-end treatment tank 2 and the back-end formation tank 3 at the rear of the formation production line is 60 to 75°C. This invention, through the above design, allows the high-temperature front-end formation liquid to be input as a heat exchange medium into the first heat exchanger 6 and the second heat exchanger 5. This reduces the temperature of the front-end formation liquid and increases the temperature of the back-end formation liquid and the back-end treatment tank. The temperature of the liquid is monitored, and the production line temperature control system 9 can also use the temperature detection of the temperature sensing elements 10 in the front-end formation tank 1, the back-end processing tank 2, and the back-end formation tank 3 to determine whether to open the electric valve group 403 of the corresponding pipeline to achieve heat exchange. This can further ensure the temperature control stability of the entire production line. If the temperature sensing element 10 detects that the temperature in the tank meets the requirements, the corresponding electric valve group 403 is closed. If it does not meet the requirements, the production line temperature control system 9 controls the corresponding electric valve group 403 to open to achieve heat exchange of the front-end formation liquid output. After the temperature in the relevant tank reaches the process requirements, the production line temperature control system 9 controls the corresponding electric valve group 403 to close.
[0033] When this utility model is working, the temperature difference between the front-end formation tank 1 and the liquid in each of the rear-end tanks needs to be above 5°C. The greater the temperature difference, the better the heat exchange effect. In addition, after actual production testing, this utility model shows that, depending on the size of the tank body and the temperature of the liquid, each front-end formation tank 1 can exchange heat with 1 to 3 rear-end tanks (rear-end formation tank 3 and rear-end processing tank 2).
Claims
1. An electrode foil production line waste heat utilization system, characterized by: The system includes a front-end formation tank (1), a rear-end formation tank (3), a rear-end processing tank (2), a front-end formation liquid output pipeline (4), a return pipeline (7), a first heat exchanger (6), and a second heat exchanger (5). The input end of the front-end formation liquid output pipeline (4) is connected to the outlet of the corresponding front-end formation tank (1), and the output end is provided with a first front-end branch (401) and a second front-end branch (402). The first front-end branch (401) is connected to the heat exchange medium inlet on the corresponding first heat exchanger (6), and the second front-end branch (402) is connected to the heat exchange medium inlet on the corresponding second heat exchanger (5). The output end of the return pipeline (7) is connected to the return port of the corresponding front-end formation tank (1), and the input end is provided with a first return branch (701). 1) and the second return branch (702), and the first return branch (701) is connected to the heat exchange medium outlet on the corresponding first heat exchanger (6), the second return branch (702) is connected to the heat exchange medium outlet on the corresponding second heat exchanger (5), the rear formation tank (3) is connected to the formation tank liquid inlet on the corresponding first heat exchanger (6) through the formation liquid output pipe (301), and is connected to the formation tank liquid outlet on the corresponding first heat exchanger (6) through the formation liquid return pipe (302), the rear processing tank (2) is connected to the processing tank liquid inlet on the corresponding second heat exchanger (5) through the processing liquid output pipe (201), and is connected to the processing tank liquid outlet on the corresponding second heat exchanger (5) through the processing liquid return pipe (202).
2. The electrode foil production line waste heat utilization system according to claim 1, characterized by: Electric valve groups (403) are provided on the first front-end branch (401) and the second front-end branch (402). Temperature measuring elements (10) are provided in the rear-end formation tank (3) and the rear-end processing tank (2). The electric valve groups (403) and the temperature measuring elements (10) are connected to the production line temperature control system (9).
3. The electrode foil production line waste heat utilization system according to claim 2, characterized by: The front-end formation tank (1) is equipped with a temperature measuring element (10) connected to the production line temperature control system (9).
4. The electrode foil production line waste heat utilization system according to claim 1, characterized by: Both the formation liquid output pipeline (301) and the treatment liquid output pipeline (201) are equipped with circulation pumps (8).
5. The electrode foil production line waste heat utilization system according to claim 1, characterized by: The first heat exchanger (6) is a plate heat exchanger with a heat exchange area of A1, and the second heat exchanger (5) is a shell-and-tube heat exchanger with a heat exchange area of A2.