An electrolytic apparatus capable of outputting a high-oxidizing acidic etching solution

Abstract

The utility model provides an electrolytic equipment of can output high oxidability acid etching liquid, including negative pole circulation jar, positive pole circulation jar, negative pole circulation pump, positive pole circulation pump, negative pole input pipe, positive pole input pipe, electrolytic jar, negative pole backflow pipe, positive pole backflow pipe, chlorine recovery pipe, waste gas treatment device, acid etching liquid storage tank, acid regeneration liquid storage tank, acid etching liquid input pump, first overflow pipe and second overflow pipe, electrolytic jar is equipped with negative pole electrolytic area and ion exchange membrane positive pole frame, and negative pole electrolytic area and ion exchange membrane positive pole frame do not communicate each other. The utility model provides an electrolytic equipment of can output high oxidability acid etching liquid according to above-mentioned content, solves the mode of using drum in chlorine gas to improve the oxidizability of acid etching regeneration liquid in prior art, and the problem of the risk of chlorine gas leakage exists.

Description

Technical Field

[0001] This utility model relates to the field of etching waste liquid treatment technology, and in particular to an electrolytic device capable of outputting highly oxidizing acidic etching liquid. Background Technology

[0002] Acid etching is an etching process used in PCB manufacturing. The main components of commonly used acid etching solutions are copper chloride, concentrated hydrochloric acid, hydrogen peroxide, water, and other components. The etching waste liquid generated after PCB etching contains a large amount of copper with high economic value. The industry usually recovers the copper from the acid etching solution through electrolysis, and then prepares the electrolyzed acid etching regeneration solution (ORP < 300mV) to make its ORP (oxidation-reduction potential) meet the requirements of PCB production.

[0003] However, in the existing technology, in order to adjust the acidic etching regeneration solution after electrolysis to meet the production requirements (ORP>500mV), chlorine gas from the positive electrode of electrolysis is usually blown into the acidic etching regeneration solution after electrolysis. The blowing process carries the risk of chlorine gas leakage. Chlorine gas is toxic and poses a danger to the health of the operators. Utility Model Content

[0004] The purpose of this invention is to propose an electrolytic device that can output a highly oxidizing acidic etching solution, thereby solving the problem of chlorine leakage risk associated with the existing method of using chlorine gas to increase the oxidizing power of the acidic etching regeneration solution.

[0005] To achieve this objective, the present invention adopts the following technical solution: An electrolytic device capable of outputting a highly oxidizing acidic etching solution includes a negative electrode circulation tank, a positive electrode circulation tank, a negative electrode circulation pump, a positive electrode circulation pump, a negative electrode input pipe, a positive electrode input pipe, an electrolytic cylinder, a negative electrode reflux pipe, a positive electrode reflux pipe, a chlorine recovery pipe, a waste gas treatment device, an acidic etching solution storage tank, an acidic regeneration solution storage tank, an acidic etching solution input pump, a first overflow pipe, and a second overflow pipe. The electrolysis cylinder is provided with a negative electrode electrolysis zone and an ion membrane positive electrode frame, and the negative electrode electrolysis zone and the ion membrane positive electrode frame are not connected to each other; One end of the negative electrode circulation pump is connected to the negative electrode circulation cylinder, the other end of the negative electrode circulation pump is connected to one end of the negative electrode input pipe, the other end of the negative electrode input pipe is connected to the negative electrode electrolysis zone, one end of the negative electrode return pipe is connected to the negative electrode electrolysis zone, and the other end of the negative electrode return pipe is connected to the negative electrode circulation cylinder. One end of the positive electrode circulation pump is connected to the positive electrode circulation cylinder, the other end of the positive electrode circulation pump is connected to one end of the positive electrode input tube, the other end of the positive electrode input tube is connected to the ion membrane positive electrode frame, one end of the positive electrode reflux tube is connected to the ion membrane positive electrode frame, and the other end of the positive electrode reflux tube is connected to the positive electrode circulation cylinder. One end of the acidic etching solution input pump is connected to the acidic etching solution storage tank, and the other end of the acidic etching solution input pump is connected to the negative electrode circulation cylinder. One end of the first overflow pipe is connected to the negative electrode circulation cylinder, and the other end of the first overflow pipe is connected to the positive electrode circulation cylinder. One end of the second overflow pipe is connected to the positive electrode circulation cylinder, and the other end of the second overflow pipe is connected to the acidic regeneration solution storage tank. One end of the chlorine recovery pipe is connected to the positive electrode frame of the ion membrane and the positive electrode circulation cylinder, and the other end of the chlorine recovery pipe is connected to the waste gas treatment device.

[0006] Furthermore, it also includes a specific gravity controller, which is installed in the negative electrode circulation cylinder and is used to detect the specific gravity of the negative electrode electrolyte in the negative electrode circulation cylinder.

[0007] Specifically, the electrolysis cylinder is provided with multiple negative electrode electrolysis zones, multiple ion membrane positive electrode frames, an overflow zone, and an overflow tank; Multiple ion-exchange membrane positive electrode frames are evenly spaced along the length of the electrolysis cylinder. The negative electrode electrolysis zone is located between two adjacent ion-exchange membrane positive electrode frames, and the multiple negative electrode electrolysis zones are interconnected. The multiple negative electrode electrolysis zones are connected to the overflow zone through the overflow tank, and the overflow zone is connected to the negative electrode circulation cylinder through the negative electrode return pipe.

[0008] Preferably, one end of the negative electrode input tube is connected to the negative electrode circulation pump, and the other end of the negative electrode input tube is provided with two first branch tubes, which are respectively connected to the corresponding negative electrode electrolysis zone.

[0009] In some embodiments, one end of the positive electrode input tube is connected to the positive electrode circulation pump, and the other end of the positive electrode input tube is provided with three second branches, which are respectively connected to the corresponding ion membrane positive electrode frame.

[0010] Furthermore, one end of the positive electrode reflux tube is provided with three third branches, each of which is connected to a corresponding ion membrane positive electrode frame, and the other end of the positive electrode reflux tube is connected to the positive electrode circulation cylinder.

[0011] Specifically, one end of the chlorine recovery pipe is provided with a fourth branch pipe and three fifth branch pipes, the other end of the chlorine recovery pipe is connected to the waste gas treatment device, the fourth branch pipe is connected to the positive electrode circulation cylinder, and the three fifth branch pipes are respectively connected to the corresponding ion membrane positive electrode frame.

[0012] Compared with the prior art, one of the above technical solutions has the following beneficial effects: Through the synergistic action of the negative electrode circulation system, the positive electrode circulation system, and the replenishment overflow system, not only can copper ions in the negative electrode electrolyte be electrolytically deposited to obtain elemental copper, achieving efficient recovery and reuse of copper resources and reducing production costs, but the positive electrode electrolyte can also be oxidized to increase its own oxidizing power, obtaining a low-copper, high-oxidizing acidic etching regenerator. This acidic etching regenerator can be reused in etching production, achieving the recycling of etching solution and further reducing production costs. Furthermore, the chlorine gas generated by electrolysis is directly recovered and treated by the waste gas treatment device, replacing the traditional method of recycling and using chlorine gas to increase the oxidizing power of the acidic etching regenerator, avoiding the risk of leakage during the chlorine gas injection process, and protecting the health of the operators. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an electrolytic device capable of outputting a highly oxidizing acidic etching solution according to one embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of an electrolytic device capable of outputting highly oxidizing acidic etching solution, according to one embodiment of the present invention, from another perspective. Figure 3 This is a schematic diagram of the structure of an electrolysis cylinder according to one embodiment of the present invention; The components include: negative electrode circulation cylinder 11, positive electrode circulation cylinder 12, negative electrode circulation pump 21, positive electrode circulation pump 22, negative electrode input pipe 31, first branch pipe 311, positive electrode input pipe 32, second branch pipe 321, electrolysis cylinder 4, negative electrode electrolysis zone 41, ion membrane positive electrode frame 42, overflow zone 43, overflow tank 44, negative electrode return pipe 51, positive electrode return pipe 52, third branch pipe 521, chlorine recovery pipe 6, fourth branch pipe 61, fifth branch pipe 62, waste gas treatment device 7, acidic etching solution storage tank 81, acidic regeneration solution storage tank 82, acidic etching solution input pump 83, first overflow pipe 84, second overflow pipe 85, and specific gravity controller 86. Detailed Implementation

[0014] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0015] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," "outer," "inner side," "outer side," "inner end," "outer end," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" and "second" may explicitly or implicitly include one or more of these features, used to distinguish descriptive features, without any order or emphasis. In the description of this utility model, unless otherwise stated, "multiple" means two or more.

[0016] In one embodiment of this utility model, such as Figure 1-3As shown, an electrolytic device capable of outputting a highly oxidizing acidic etching solution includes a negative electrode circulation tank 11, a positive electrode circulation tank 12, a negative electrode circulation pump 21, a positive electrode circulation pump 22, a negative electrode input pipe 31, a positive electrode input pipe 32, an electrolytic cylinder 4, a negative electrode reflux pipe 51, a positive electrode reflux pipe 52, a chlorine recovery pipe 6, a waste gas treatment device 7, an acidic etching solution storage tank 81, an acidic regeneration solution storage tank 82, an acidic etching solution input pump 83, a first overflow pipe 84, and a second overflow pipe 85; the electrolytic cylinder 4 is provided with a negative electrode electrolysis zone 41 and an outlet... The positive electrode frame 42 of the ion membrane is connected to the negative electrode electrolysis region 41, and the negative electrode positive electrode frame 42 is not connected to the negative electrode circulation pump 21. One end of the negative electrode circulation pump 21 is connected to the negative electrode circulation cylinder 11, and the other end of the negative electrode circulation pump 21 is connected to one end of the negative electrode input pipe 31. The other end of the negative electrode input pipe 31 is connected to the negative electrode electrolysis region 41. One end of the negative electrode return pipe 51 is connected to the negative electrode electrolysis region 41, and the other end of the negative electrode return pipe 51 is connected to the negative electrode circulation cylinder 11. The positive electrode circulation pump 22... One end of the positive electrode circulation pump 22 is connected to the positive electrode circulation cylinder 12, and the other end of the positive electrode circulation pump 22 is connected to one end of the positive electrode input pipe 32. The other end of the positive electrode input pipe 32 is connected to the ion membrane positive electrode frame 42. One end of the positive electrode reflux pipe 52 is connected to the ion membrane positive electrode frame 42, and the other end of the positive electrode reflux pipe 52 is connected to the positive electrode circulation cylinder 12. One end of the acidic etching solution input pump 83 is connected to the acidic etching solution storage tank 81, and the other end of the acidic etching solution input pump 83 is connected to... The negative electrode circulation cylinder 11 has one end of the first overflow pipe 84 connected to the negative electrode circulation cylinder 11 and the other end of the first overflow pipe 84 connected to the positive electrode circulation cylinder 12. One end of the second overflow pipe 85 is connected to the positive electrode circulation cylinder 12 and the other end of the second overflow pipe 85 is connected to the acidic regenerated liquid storage tank 82. One end of the chlorine recovery pipe 6 is connected to the ion membrane positive electrode frame 42 and the positive electrode circulation cylinder 12 respectively, and the other end of the chlorine recovery pipe 6 is connected to the waste gas treatment device 7.In this embodiment, the waste gas treatment device 7 is existing technology. The negative electrode electrolysis zone 41 is equipped with an electrolytic negative electrode plate, which is electrically connected to the negative electrode of the power supply. The ion membrane positive electrode frame 42 is equipped with an electrolytic positive electrode plate, which is electrically connected to the positive electrode of the power supply. The negative electrode circulation cylinder 11 contains a negative electrode electrolyte (high copper ion concentration), and the positive electrode circulation cylinder 12 contains a positive electrode electrolyte (low copper ion concentration). During operation, the negative electrode circulation cylinder 11 transports the negative electrode electrolyte to the negative electrode electrolysis zone 41 of the electrolysis cylinder 4 through the negative electrode circulation pump 21 and the negative electrode input pipe 31. Under the action of the negative electrode electrolysis plate, an electrolytic reaction occurs, electrolyzing and depositing elemental copper from the copper ions in the negative electrode electrolyte, i.e., the copper in the negative electrode electrolyte. As the ion concentration decreases, the negative electrode electrolyte flows back from the negative electrode reflux pipe 51 to the negative electrode circulation cylinder 11. Meanwhile, the positive electrode circulation cylinder 12, through the positive electrode circulation pump 22 and the positive electrode input pipe 32, transports the positive electrode electrolyte to the ion membrane positive electrode frame 42 of the electrolysis cylinder 4. Under the action of the positive electrode electrolysis plate, an electrolysis reaction occurs, oxidizing the positive electrode electrolyte and thus increasing its own oxidizing power, i.e., the ORP value of the positive electrode electrolyte continuously increases. Then, the positive electrode electrolyte flows back to the positive electrode circulation cylinder 12 through the positive electrode reflux pipe 52. Chlorine gas is generated during the oxidation process of the positive electrode electrolyte. Therefore, the chlorine gas in the ion membrane positive electrode frame 42 and the positive electrode circulation cylinder 12 can be recovered through the chlorine gas recovery pipe 6 and sent to the waste gas treatment device 7 for treatment. Furthermore, when the specific gravity of the negative electrode electrolyte in the negative electrode circulation tank 11 is lower than the set value, the acidic etching solution input pump 83 delivers high-copper acidic etching solution from the acidic etching solution storage tank 81 to the negative electrode circulation tank 11, thereby replenishing the concentration of copper ions in the negative electrode electrolyte. During the replenishment of the acidic etching solution, the low-copper-concentration negative electrode electrolyte in the negative electrode circulation tank 11 overflows into the positive electrode circulation tank 12 through the first overflow pipe 84, while the high-oxidizing positive electrode electrolyte in the positive electrode circulation tank 12 overflows into the acidic regeneration solution storage tank 82 through the second overflow pipe 85, thereby enabling the acidic regeneration solution storage tank 82 to obtain a low-copper, high-oxidizing (ORP > 950mV) acidic etching regeneration solution. This utility model achieves this through negative electrode circulation. The synergistic effect of the system, the positive electrode circulation system, and the replenishment overflow system not only electrolytically deposits copper ions in the negative electrode electrolyte to obtain elemental copper, achieving efficient recovery and reuse of copper resources and reducing production costs, but also oxidizes the positive electrode electrolyte to increase its own oxidizing power, obtaining a low-copper, high-oxidizing acidic etching regenerator. This acidic etching regenerator can be reused in etching production, achieving the recycling of etching solution and further reducing production costs. Furthermore, the chlorine gas generated by electrolysis is directly recovered and treated by the waste gas treatment device 7, replacing the traditional method of recycling and using chlorine gas to improve the oxidizing power of the acidic etching regenerator, avoiding the risk of leakage during the chlorine gas injection process, and protecting the health of the operators.

[0017] like Figure 1-2As shown, it also includes a specific gravity controller 86, which is installed in the negative electrode circulation cylinder 11. The specific gravity controller 86 is used to detect the specific gravity of the negative electrode electrolyte in the negative electrode circulation cylinder 11. In this embodiment, the specific gravity controller 86 is prior art. Specifically, the specific gravity controller 86 is a sensor controller that detects the specific gravity (density) of the liquid in real time and outputs a signal. The specific gravity controller 86 is electrically connected to the acidic etching solution input pump 83. During operation, when the specific gravity controller 86 detects that the specific gravity of the negative electrode electrolyte in the negative electrode circulation cylinder 11 is lower than a set value, that is, the copper ion concentration is lower than a set value, the specific gravity controller 86 feeds back an electrical signal to the acidic etching solution input pump 83. The acidic etching solution input pump 83 starts working and transports the high-copper acidic etching solution from the acidic etching solution storage tank 81 to the negative electrode circulation cylinder 11, thereby achieving the purpose of replenishment.

[0018] like Figure 1-3 As shown, the electrolysis cylinder 4 is provided with multiple negative electrode electrolysis zones 41, multiple ion membrane positive electrode frames 42, overflow zone 43, and overflow tank 44; the multiple ion membrane positive electrode frames 42 are evenly spaced along the length direction of the electrolysis cylinder 4, the negative electrode electrolysis zones 41 are located between two adjacent ion membrane positive electrode frames 42, and the multiple negative electrode electrolysis zones 41 are interconnected with each other, the multiple negative electrode electrolysis zones 41 are connected to the overflow zone 43 through the overflow tank 44, and the overflow zone 43 is connected to the negative electrode circulation cylinder 11 through the negative electrode return pipe 51. In this embodiment, the electrolysis cylinder 4 is provided with three ion membrane positive electrode frames 42 and three corresponding electrolysis positive electrode plates. Two negative electrode electrolysis zones 41 are formed between the three ion membrane positive electrode frames 42 and two corresponding electrolysis negative electrode plates are provided. Specifically, there are hollow areas on the outer sides of the two outermost ion membrane positive electrode frames 42. These hollow areas are connected to the negative electrode electrolysis zones 41, which facilitates the electrolysis and reduction of more negative electrode electrolyte. During operation, after the negative electrode electrolyte in the negative electrode electrolysis zone 41 is electrolyzed and reduced, the negative electrode electrolyte overflows from the overflow tank 44 to the overflow zone 43 and returns to the negative electrode circulation cylinder 11 through the negative electrode return pipe 51.

[0019] like Figure 1-3 As shown, one end of the negative electrode input pipe 31 is connected to the negative electrode circulation pump 21, and the other end of the negative electrode input pipe 31 is provided with two first branch pipes 311, which are respectively connected to the corresponding negative electrode electrolysis zones 41. In this embodiment, during operation, the negative electrode circulation pump 21 pumps the negative electrode electrolyte from the negative electrode circulation cylinder 11 into one end of the negative electrode input pipe 31, and then diverts it from the two first branch pipes 311 at the other end of the negative electrode input pipe 31 into the two negative electrode electrolysis zones 41.

[0020] like Figure 1-3As shown, one end of the positive electrode input pipe 32 is connected to the positive electrode circulation pump 22, and the other end of the positive electrode input pipe 32 is provided with three second branch pipes 321, which are respectively connected to the corresponding ion membrane positive electrode frames 42. In this embodiment, during operation, the positive electrode circulation pump 22 pumps the positive electrode electrolyte from the positive electrode circulation cylinder 12 into one end of the positive electrode input pipe 32, and then diverts it from the three second branch pipes 321 at the other end of the positive electrode input pipe 32 to the interior of the three ion membrane positive electrode frames 42. Specifically, the opening of the second branch pipe 321 is connected to the top of the ion membrane positive electrode frame 42.

[0021] like Figure 1-3 As shown, one end of the positive electrode reflux pipe 52 is provided with three third branch pipes 521, each of which is connected to a corresponding ion membrane positive electrode frame 42. The other end of the positive electrode reflux pipe 52 is connected to the positive electrode circulation cylinder 12. In this embodiment, during operation, the oxidized positive electrode electrolyte in the three ion membrane positive electrode frames 42 flows from the three third branch pipes 521 into one end of the positive electrode reflux pipe 52, and then flows back into the positive electrode circulation cylinder 12 from the other end of the positive electrode reflux pipe 52.

[0022] like Figure 1-3 As shown, one end of the chlorine recovery pipe 6 is provided with a fourth branch pipe 61 and three fifth branch pipes 62. The other end of the chlorine recovery pipe 6 is connected to the waste gas treatment device 7. The fourth branch pipe 61 is connected to the positive electrode circulation cylinder 12, and the three fifth branch pipes 62 are respectively connected to the corresponding ion membrane positive electrode frame 42. In this embodiment, the fourth branch pipe 61 is connected to the top of the positive electrode circulation cylinder 12, and the fifth branch pipes 62 are connected to the top of the ion membrane positive electrode frame 42. During operation, the chlorine in the positive electrode circulation cylinder 12 and the chlorine in the three ion membrane positive electrode frames 42 converge into one end of the chlorine recovery pipe 6 through the fourth branch pipe 61 and the three fifth branch pipes 62, and then enter the waste gas treatment device 7 from the other end of the chlorine recovery pipe 6 for recovery treatment.

[0023] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An electrolytic device capable of outputting a highly oxidizing acidic etching solution, characterized in that: It includes a negative electrode circulation cylinder, a positive electrode circulation cylinder, a negative electrode circulation pump, a positive electrode circulation pump, a negative electrode input pipe, a positive electrode input pipe, an electrolysis cylinder, a negative electrode reflux pipe, a positive electrode reflux pipe, a chlorine recovery pipe, a waste gas treatment device, an acidic etching solution storage tank, an acidic regeneration solution storage tank, an acidic etching solution input pump, a first overflow pipe, and a second overflow pipe. The electrolysis cylinder is provided with a negative electrode electrolysis zone and an ion membrane positive electrode frame, and the negative electrode electrolysis zone and the ion membrane positive electrode frame are not connected to each other; One end of the negative electrode circulation pump is connected to the negative electrode circulation cylinder, the other end of the negative electrode circulation pump is connected to one end of the negative electrode input pipe, the other end of the negative electrode input pipe is connected to the negative electrode electrolysis zone, one end of the negative electrode return pipe is connected to the negative electrode electrolysis zone, and the other end of the negative electrode return pipe is connected to the negative electrode circulation cylinder. One end of the positive electrode circulation pump is connected to the positive electrode circulation cylinder, the other end of the positive electrode circulation pump is connected to one end of the positive electrode input tube, the other end of the positive electrode input tube is connected to the ion membrane positive electrode frame, one end of the positive electrode reflux tube is connected to the ion membrane positive electrode frame, and the other end of the positive electrode reflux tube is connected to the positive electrode circulation cylinder. One end of the acidic etching solution input pump is connected to the acidic etching solution storage tank, and the other end of the acidic etching solution input pump is connected to the negative electrode circulation cylinder. One end of the first overflow pipe is connected to the negative electrode circulation cylinder, and the other end of the first overflow pipe is connected to the positive electrode circulation cylinder. One end of the second overflow pipe is connected to the positive electrode circulation cylinder, and the other end of the second overflow pipe is connected to the acidic regeneration solution storage tank. One end of the chlorine recovery pipe is connected to the positive electrode frame of the ion membrane and the positive electrode circulation cylinder, and the other end of the chlorine recovery pipe is connected to the waste gas treatment device.

2. The electrolytic device capable of outputting a highly oxidizing acidic etching solution according to claim 1, characterized in that: It also includes a specific gravity controller, which is installed in the negative electrode circulation cylinder and is used to detect the specific gravity of the negative electrode electrolyte in the negative electrode circulation cylinder.

3. The electrolytic device capable of outputting a highly oxidizing acidic etching solution according to claim 1, characterized in that: The electrolysis cylinder is equipped with multiple negative electrode electrolysis zones, multiple ion membrane positive electrode frames, an overflow zone, and an overflow tank. Multiple ion-exchange membrane positive electrode frames are evenly spaced along the length of the electrolysis cylinder. The negative electrode electrolysis zone is located between two adjacent ion-exchange membrane positive electrode frames, and the multiple negative electrode electrolysis zones are interconnected. The multiple negative electrode electrolysis zones are connected to the overflow zone through the overflow tank, and the overflow zone is connected to the negative electrode circulation cylinder through the negative electrode return pipe.

4. The electrolytic device capable of outputting a highly oxidizing acidic etching solution according to claim 3, characterized in that: One end of the negative electrode input tube is connected to the negative electrode circulation pump, and the other end of the negative electrode input tube is provided with two first branch tubes, which are respectively connected to the corresponding negative electrode electrolysis zone.

5. The electrolytic device capable of outputting a highly oxidizing acidic etching solution according to claim 3, characterized in that: One end of the positive electrode input tube is connected to the positive electrode circulation pump, and the other end of the positive electrode input tube is provided with three second branches, which are respectively connected to the corresponding ion membrane positive electrode frame.

6. The electrolytic device capable of outputting a highly oxidizing acidic etching solution according to claim 3, characterized in that: One end of the positive electrode reflux tube is provided with three third branches, and the three third branches are respectively connected to the corresponding ion membrane positive electrode frame. The other end of the positive electrode reflux tube is connected to the positive electrode circulation cylinder.

7. The electrolytic device capable of outputting a highly oxidizing acidic etching solution according to claim 3, characterized in that: One end of the chlorine recovery pipe is provided with a fourth branch pipe and three fifth branch pipes. The other end of the chlorine recovery pipe is connected to the waste gas treatment device. The fourth branch pipe is connected to the positive electrode circulation cylinder, and the three fifth branch pipes are respectively connected to the corresponding ion membrane positive electrode frame.

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