A kind of overflow water recycling device of hydration tank of medium-high voltage formation foil production line

Abstract

The utility model discloses a kind of overflow water recycling devices of hydration tank of medium-high voltage formation foil production line, belong to formation foil production equipment technical field, including hydration tank (1), the overflow port of hydration tank (1) is connected with a collection tank (2) by pipeline, centrifugal pump (3), filter (4) and permeation membrane unit (5) are sequentially connected after the collection tank (2), the permeation membrane unit (5) is connected to a spray pipe (7) by pipeline, the lower of the spray pipe (7), corresponding to the phosphating foil piece (8) after being handled by middle section phosphoric acid treatment tank (6), change;The device of the utility model can effectively reduce sewage temperature, solve the adverse effects caused by high water temperature when sewage treatment, water after removing impurities can be used for the cleaning of phosphorus-containing foil, to effectively improve formation line foil surface quality, and reduce the pure water amount of formation line cleaning foil surface, reduce energy consumption.

Description

Technical Field

[0001] This utility model relates to the technical field of electrolytic foil production equipment, and in particular to a device for recycling overflow water from the hydration tank of a medium- and high-pressure electrolytic foil production line. Background Technology

[0002] During the operation of the medium- and high-voltage electrolytic foil production line, the hydration tank requires 1.0–0.1 μs / cm pure water heated to maintain a high temperature of 95–100°C. This is used to clean the foil, removing any trace amounts of electrolyte, organic matter, and dust particles that may have remained from the previous etching process. The cleaned foil then undergoes a formal hydration reaction to form a uniform and strongly adhering hydrated oxide film. To maintain a stable and effective hydration cleaning capacity, the hydration tank needs to be continuously replenished with fresh clean pure water. Naturally, a certain amount of 90–95°C pure water overflows from the hydration tank, along with a certain amount of cooling pure water from the foil surface. The overflowing 90°C pure water and the cooling pure water from the foil surface are then discharged to the wastewater treatment plant.

[0003] Excessive wastewater temperature can reduce the activity of some microorganisms, hinder their metabolism, or even kill them, leading to decreased wastewater treatment efficiency and difficulty in meeting discharge standards. Simultaneously, residual phosphoric acid on the foil behind the phosphate treatment tank in the middle of the chemical formation line makes it difficult to clean, causing the foil to yellow. This can even lead to decreased stability of the electrolyte in the next stage of the chemical formation electrolysis tank, potentially resulting in ineffectiveness or contamination, forcing a production shutdown and the re-preparation of the electrolyte. This directly results in wasted chemical formation electrolyte, increased raw material costs, and unstable product quality. Summary of the Invention

[0004] The purpose of this invention is to provide a device for recycling overflow water from the hydration tank of a medium- or high-pressure electrolytic foil production line, in order to solve the above-mentioned problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A device for recycling overflow water from a hydration tank in a medium- or high-pressure electrolytic foil production line includes a hydration tank. The overflow port of the hydration tank is connected to a collection tank via a pipe. A centrifugal pump, a filter, and a permeation membrane unit are sequentially connected after the collection tank. The permeation membrane unit is connected to a spray pipe via a pipe. The area below the spray pipe corresponds to the phosphoric acid electrolytic foil treated in the intermediate phosphoric acid treatment tank.

[0006] This invention first collects the high-temperature overflow water from the hydration tank using a collection tank. A centrifugal pump then transports the hot pure water from the collection tank to a filter for filtration. This filtration separates solid particles and suspended matter scattered in the pure water during the cleaning process of the hydration tank's etched foils, as well as organic impurities adsorbed from the pure water molecules. The filtered hot pure water is then transported through pipelines to a permeate membrane unit to separate any trace electrolyte molecules that may have remained from the etching process before the permeate membrane unit, as well as alumina powder molecules from the foils during the cleaning process in the hydration tank. After the above filtration, separation, and purification steps, clean pure water free of particles and impurities is obtained, which is used to clean the phosphoric acid-containing foil surfaces behind the phosphoric acid treatment tank in the middle section of the formation line. In this way, after the high-temperature pure water overflowing from the hydration tank passes through the collection tank, the transfer pump, the filter, the permeate membrane, the pipeline, and the multi-hole sprayer to evenly spray the foil surfaces for cleaning, the water temperature has dropped to about 35°C. This solves the problem that high water temperatures in wastewater treatment plants affect the activity of organic microorganisms in the treatment tank, causing metabolic obstruction or even death. On the other hand, the hot pure water after removing impurities can be better used to clean phosphorus-containing foil surfaces.

[0007] As a preferred technical solution, the collection tank is made of heat-resistant PP material.

[0008] As a preferred technical solution, the spray pipe is a porous spray pipe made of heat-resistant material.

[0009] As a preferred technical solution, the filter is a high-density pressure filter. This type of filter is existing technology, in which the filter plate and filter cloth are tightly combined to form a closed filter chamber, ensuring efficient interception of solid particles, and filtration is carried out under pump delivery pressure.

[0010] Compared with the prior art, the advantages of this utility model are as follows: the device of this utility model can effectively reduce the temperature of sewage to below 35°C, solve the adverse effects caused by high water temperature during sewage treatment, and the hot pure water after removing impurities can be used for cleaning phosphorus-containing foils, thereby effectively improving the foil surface quality of the forming line and reducing the amount of pure water used for cleaning the foil surface of the forming line, thus reducing energy consumption. Attached Figure Description

[0011] Figure 1 This is an overall structural diagram of the recycling device of this utility model; In the diagram: 1. Hydration tank; 2. Collection tank; 3. Centrifugal pump; 4. Filter; 5. Permeation membrane unit; 6. Intermediate phosphoric acid treatment tank; 7. Spray pipe; 8. Phosphorylation foil. Detailed Implementation

[0012] The present invention will be further described below with reference to the embodiments.

[0013] Example 1:

[0014] See Figure 1A device for recovering and utilizing overflow hot pure water from a hydration tank in a medium- and high-pressure electrolytic foil production line includes a hydration tank 1. The overflow port of the hydration tank 1 is connected to a collection tank 2 via a pipe. The collection tank 2 is made of heat-resistant PP material. A centrifugal pump 3 is connected sequentially after the collection tank 2. The centrifugal pump 3 transports the hot pure water in the collection tank to a filter 4 and a permeation membrane unit 5. The permeation membrane unit 5 is connected to a spray pipe 7 via a pipe. The spray pipe 7 is a porous spray pipe made of heat-resistant material. The area below the spray pipe 7 corresponds to the phosphorylated electrolytic foil 8 treated in the intermediate phosphoric acid treatment tank 6. Hot pure water overflows from hydration tank 1 (as described in the background: the hydration tank needs to be heated to 95-100℃ using pure water at a rate of 1.0-0.1 μs / cm to clean the foil; therefore, the hydration tank is also replenished with pure water; the subsequent filtration process is to remove suspended solid particles scattered in the pure water of the hydration tank and to adsorb organic impurities from the pure water molecules; the purpose of the permeation treatment is to remove various trace electrolyte molecules that may remain from the previous foil etching process and alumina powder molecules on the foil during the cleaning process in the hydration tank). The overflowing hot pure water enters collection tank 2 through a pipeline, and is then pumped by a small centrifugal pump 3 to a high-density pressure filter 4 for filtration, removing suspended solid particles scattered in the pure water of the hydration tank and organic impurities from the adsorbed pure water molecules. After filtration, the pure water is then permeated through a permeation membrane unit 5 to separate various trace electrolyte molecules that may remain from the previous foil etching process and alumina powder molecules on the foil during the cleaning process in the hydration tank. This cleaned hot pure water is then used to clean the phosphoric acid-containing foil surface. The intermediate phosphoric acid treatment tank 6 contains a certain amount of phosphoric acid in the formation foil, which effectively improves the cleanliness of the phosphoric acid in the foil of the intermediate phosphoric acid treatment tank 6, and improves the controllability and stability of the electrolyte in the next formation tank, solving the previous problems of yellowing foil surface and electrolyte failure or contamination in the next formation tank.

[0015] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for recycling overflow water from the hydration tank of a medium- or high-pressure electrolytic foil production line, characterized in that, The system includes a hydration tank (1), the overflow port of which is connected to a collection tank (2) via a pipe. A centrifugal pump (3), a filter (4), and a permeation membrane unit (5) are connected in sequence after the collection tank (2). The permeation membrane unit (5) is connected to a spray pipe (7) via a pipe. The area below the spray pipe (7) corresponds to the phosphorylated foil (8) after treatment in the intermediate phosphoric acid treatment tank (6).

2. The overflow water recycling device for the hydration tank of the medium-high voltage electrolytic foil production line according to claim 1, characterized in that, The collection tank (2) is made of heat-resistant PP material.

3. The overflow water recycling device for the hydration tank of the medium-high voltage electrolytic foil production line according to claim 1, characterized in that, The spray pipe (7) is a porous spray pipe made of heat-resistant material.

4. The overflow water recycling device for the hydration tank of the medium-high voltage electrolytic foil production line according to claim 1, characterized in that, The filter (4) is a high-density pressure filter.

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