CN219032380U

CN219032380U - Acid etching solution recovery system

Info

Publication number: CN219032380U
Application number: CN202223372408.0U
Authority: CN
Inventors: 郑慧珍; 张冰冰
Original assignee: KINSUS INTERCONNECT TECHNOLOGY (SUZHOU) CORP
Current assignee: KINSUS INTERCONNECT TECHNOLOGY (SUZHOU) CORP
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-05-16
Anticipated expiration: 2032-12-14

Abstract

The utility model discloses an acid etching solution recovery system, and relates to the technical field of high-density printed circuit boards and flexible circuit boards. The acid etching liquid recycling system comprises an electrolytic tank, wherein the input end of the electrolytic tank is electrically connected with an anode, a cathode and an output end for controlling specific gravity, the input end of the cathode is electrically connected with an output end of chlorine, the input end of the chlorine is electrically connected with an output end for controlling ORP, the input end of the ORP is electrically connected with an output end for absorbing acid mist, the input end for absorbing acid mist is electrically connected with an output end for an acid etching line (DES) and an output end for a scrap iron reduction cylinder respectively, the input end for the acid etching line (DES) is electrically connected with an overflow and an output end for absorbing acid mist respectively, the input end for the overflow is electrically connected with an output end for etching a waste liquid tank, and the input end for etching the waste liquid tank and the output end for the electrolytic tank are electrically connected. The device reduces the emission of copper ions through a series of recovery operations, reduces environmental pollution, and is favorable for responding to environmental protection calls.

Description

Acid etching solution recovery system

Technical Field

The utility model relates to the technical field of high-density printed circuit boards and flexible circuit boards, in particular to an acid etching solution recycling system.

Background

The circuit board can be called a printed circuit board or a printed circuit board, an FPC circuit board, the FPC circuit board is also called a flexible circuit board which is made of polyimide or polyester film as a base material and has high reliability, the excellent flexible printed circuit board is made of copper, copper is an indispensable element of the circuit board, but copper and compounds thereof have great pollution to atmosphere, water body and soil, and the copper can be harmful to human health after being accumulated in a body to a certain extent.

The application number is CN201720014515.6, and the recovery treatment system of the acid etching waste liquid comprises a waste liquid collecting tank for collecting the acid etching waste liquid of an etching production line and a membrane electrolytic tank for electrolyzing the acid etching waste liquid, wherein the waste liquid collecting tank is communicated with the membrane electrolytic tank through a liquid conveying pipe, and a water pump is arranged to input the acid etching waste liquid in the waste liquid collecting tank into the membrane electrolytic tank; the membrane electrolytic tank is characterized in that the membrane is used for dividing the electrolytic tank into a cathode chamber and an anode chamber, the membrane electrolytic tank is used for electrolyzing acid etching waste liquid to separate out metallic copper and chlorine gas to obtain acid etching regeneration liquid, the chlorine gas generated by the acid etching waste liquid in the membrane electrolytic regeneration process is absorbed by a chlorine gas absorbing device and is led into concentrated hot alkali liquid, the reaction is carried out to generate mixed solution, the generated mixed solution can be used as an oxidant to be added in the production of the original etching liquid, the conversion of pollutants into resource recovery and reutilization are realized, and the membrane electrolytic tank is more environment-friendly.

The device can retrieve acid etching waste liquid, but can not carry out cyclic operation, can not maximize the reduction copper ion's the emission, based on this, proposes an acid etching liquid recovery system.

Disclosure of Invention

The present utility model is directed to an acidic etching solution recycling system, which solves the problems set forth in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an acid etching solution recovery system, includes the electrolysis trough, the input electricity of electrolysis trough is connected with positive pole, negative pole and specific gravity control's output, the input electricity of negative pole is connected with the output of chlorine, the input electricity of chlorine is connected with ORP control's output, ORP control's input electricity is connected with the absorptive output of acid mist, the absorptive input of acid mist is connected with the output of acid etching line (DES) and iron fillings reduction jar respectively, the absorptive output of acid etching line (DES) is connected with overflow and acid mist respectively, the input electricity of overflow is connected with the output of etching waste liquid groove, the input of etching waste liquid groove and the output of electrolysis trough are the electricity and connect the setting, specific gravity control's input electricity is connected with the output of first AQUA automatic control.

Preferably, the input end of the anode is electrically connected with the output end of the copper plate.

Preferably, the acid etched line (DES) and the acid mist absorber are in an electrically interconnected relationship.

Preferably, the input end of the scrap iron reduction cylinder is electrically connected with the output end of the wastewater tank, and chlorine is not completely absorbed and then discharged after being collected by the scrap iron reduction cylinder, so that the effect of environmental protection is achieved.

Preferably, the first AQUA automatic controller and the second AQUA automatic controller are in an electric connection relationship, so that the cyclic operation can be performed, and the environment-friendly use effect is achieved.

Preferably, the input end of the first AQUA automatic controller is electrically connected with an acid etching line (DES) and the output end of the second AQUA automatic controller, the input end of the second AQUA automatic controller is electrically connected with the output end of the first AQUA automatic controller, the input end of the second AQUA automatic controller is electrically connected with the output end of the hydrochloric acid regenerant storage tank, the input end of the hydrochloric acid regenerant storage tank is electrically connected with an automatically added output end, the automatically added input end and the output end of the acid etching line (DES) are electrically connected, and the copper regenerant is recycled in the acid etching line (DES) through the hydrochloric acid regenerant storage tank, so that the environmental protection purpose of recycling and regeneration is achieved.

Compared with the prior art, the utility model has the beneficial effects that:

(1) According to the acid etching solution recycling system, through the use of the electrolytic tank, direct current is led out of the anode to separate out a copper plate, the cathode generates chlorine and low-content copper regeneration solution, the chlorine reacts with an acid etching line (DES) through ORP control, oxidation-reduction potential is improved, the chlorine returns into an etching waste liquid tank, divalent copper ions are generated through absorption reaction of monovalent copper ions in the etching waste liquid tank, oxidation-reduction potential and etching capacity are improved, recycling treatment is carried out again, the purpose of reducing the discharge of copper ions is achieved, the discharge of copper ions is reduced through a series of recycling operation, one year of copper emission can be reduced by 72 tons, environmental pollution is reduced, response to environmental protection call is facilitated, copper can be recycled for 504 ten thousands of yuan/year, cost is reduced, energy output is favorably saved, modern market requirements are met, and popularization and use are facilitated.

Drawings

FIG. 1 is a first recovery flow diagram in the present utility model;

FIG. 2 is a second recovery flow diagram in the present utility model;

Detailed Description

Reference will now be made in detail to the present embodiments of the present utility model, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present utility model, but not to limit the scope of the present utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, greater than, less than, exceeding, etc. are understood to exclude this number, and above, below, within, etc. are understood to include this number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1-2, the present utility model provides a technical solution: the utility model provides an acid etching solution recovery system, which comprises an electrolytic cell, the input of electrolysis cell is electrically connected with positive pole, negative pole and specific gravity control's output, the input of positive pole is electrically connected with the output of copper, the input of negative pole is electrically connected with the output of chlorine, the input of chlorine is electrically connected with ORP control's output, ORP control's input is electrically connected with the output that acid mist absorbed, the input that acid mist absorbed is electrically connected with acid etching line (DES) and iron fillings reduction jar's output respectively, the input of acid etching line (DES) is electrically connected with overflow and the output that acid mist absorbed respectively, acid etching line (DES) and acid mist absorption are mutual electrical connection, the input of overflow is electrically connected with the output of etching waste liquid groove, the input of etching waste liquid groove and the output of electrolysis cell are the electrical connection setting, through the use of an electrolytic tank, direct current is used for separating out a copper plate from an anode, chlorine gas and low-content copper regeneration liquid are generated from a cathode, the chlorine gas reacts with an acid etching line (DES) through ORP control, oxidation-reduction potential is improved and returns to an etching waste liquid tank, the chlorine gas generates bivalent copper ions through monovalent copper ion absorption reaction in the etching waste liquid tank, oxidation-reduction potential and etching capacity are improved, recycling treatment is carried out again, the purpose of reducing copper ion emission is achieved, the input end of specific gravity control is electrically connected with the output end of a first AQUA automatic controller, the input end of the first AQUA automatic controller is electrically connected with the output end of the acid etching line (DES) and the output end of a second AQUA automatic controller, the input end of an iron filings reduction cylinder is electrically connected with the output end of a waste water tank, chlorine gas is not completely absorbed into the iron filings reduction cylinder and is discharged after being collected by the iron filings reduction cylinder, the environment-friendly effect is achieved, the input end of the second AQUA automatic controller is electrically connected with the output end of the first AQUA automatic controller, the first AQUA automatic controller and the second AQUA automatic controller are in an electric connection relationship, the input end of the second AQUA automatic controller is electrically connected with the output end of the hydrochloric acid regenerant storage tank, the input end of the hydrochloric acid regenerant storage tank is electrically connected with the automatically added output end, the automatically added input end and the output end of the acid etching line (DES) are electrically connected, the copper regenerant is recycled in the acid etching line (DES) through the hydrochloric acid regenerant storage tank, the environment-friendly purpose of recycling is achieved, the emission of copper ions is reduced through a series of recycling operations, the emission of 72 tons of copper can be reduced for one year, the environment pollution is reduced, the response to the environment-friendly call is facilitated, the copper can be recycled for 504 ten thousand yuan/year, the cost is reduced, the energy output is favorably saved, the modern market demand is met, and the copper regenerant is convenient to popularize and use.

Working principle: when the electrolytic bath is used, direct current is used, copper plates are separated out from the anode, chlorine gas and low-content copper regeneration liquid are generated from the cathode through the anode, the chlorine gas reacts with an acid etching line (DES) through ORP control, oxidation-reduction potential is improved, the chlorine gas returns into an etching waste liquid tank, divalent copper ions are generated through monovalent copper ion absorption reaction in the etching waste liquid tank, oxidation-reduction potential and etching capacity are improved, recycling treatment is performed again, the purpose of reducing emission of copper ions is achieved, the chlorine gas is not completely absorbed and is discharged after being received by a scrap iron reduction tank, the effect of environmental protection is achieved, the copper regeneration liquid is recycled in the acid etching line (DES) through a hydrochloric acid regenerant storage tank, the purpose of environmental protection is achieved, the emission of copper ions is reduced through a series of recycling operation, the emission of 72 tons of copper can be reduced for one year, environmental pollution is reduced, the response to environment protection call is facilitated, the copper can be recycled for 504 ten thousands yuan/year, the cost is reduced, the energy output is facilitated, the current market demand is met, and the environmental protection is convenient to popularize and use.

Claims

1. An acidic etching solution recovery system, includes the electrolysis trough, its characterized in that: the input of electrolysis trough electricity is connected with positive pole, negative pole and proportion control's output, the input of negative pole electricity is connected with the output of chlorine, the input of chlorine electricity is connected with ORP control's output, ORP control's input electricity is connected with the absorptive output of acid mist, the absorptive input of acid mist is connected with the output of acid etching line (DES) and iron fillings reduction jar respectively, the input of acid etching line (DES) is connected with overflow and the absorptive output of acid mist respectively, the input of overflow electricity is connected with the output of etching waste liquid groove, the input of etching waste liquid groove and the output of electrolysis trough are the electricity and connect the setting, proportion control's input electricity is connected with the output of first AQUA automatic control ware.

2. The acidic etching solution recycling system according to claim 1, wherein: the input end of the anode is electrically connected with the output end of the copper plate.

3. The acidic etching solution recycling system according to claim 1, wherein: the acid etched line (DES) and the acid mist absorption are in an electrically interconnected relationship.

4. The acidic etching solution recycling system according to claim 1, wherein: the input end of the scrap iron reduction cylinder is electrically connected with the output end of the wastewater tank.

5. The acidic etching solution recycling system according to claim 1, wherein: the first AQUA automatic controller and the second AQUA automatic controller are in an electrically connected relationship with each other.

6. The acidic etching solution recycling system according to claim 1, wherein: the input end of the first AQUA automatic controller is electrically connected with an acid etching line (DES) and the output end of the second AQUA automatic controller, the input end of the second AQUA automatic controller is electrically connected with the output end of the first AQUA automatic controller, the input end of the second AQUA automatic controller is electrically connected with the output end of the hydrochloric acid regenerant storage tank, the input end of the hydrochloric acid regenerant storage tank is electrically connected with an automatic adding output end, and the automatic adding input end and the output end of the acid etching line (DES) are electrically connected.