CN204625787U - A kind of alkaline etching liquid electrolysis cycle regeneration system rapidly - Google Patents
A kind of alkaline etching liquid electrolysis cycle regeneration system rapidly Download PDFInfo
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- CN204625787U CN204625787U CN201520197326.8U CN201520197326U CN204625787U CN 204625787 U CN204625787 U CN 204625787U CN 201520197326 U CN201520197326 U CN 201520197326U CN 204625787 U CN204625787 U CN 204625787U
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Abstract
The utility model discloses a kind of alkaline etching liquid electrolysis cycle regeneration system rapidly, comprising power and Controlling System, electrolytic system, extracting system, back extraction system, distribution system and storage device, in described extracting system, comprising the reverse osmosis unit for improving copper ion concentration in extraction agent.Extraction agent after extraction is by reverse osmosis unit, copper ion concentration in further raising extraction agent, be the solubility limit that in extraction agent, copper ion concentration can exceed extraction agent, reduce the time required in stripping process, improve the working efficiency of alkaline etching liquid electrolysis cycle regeneration system rapidly.
Description
Technical field
The utility model relates to etching solution technical field of regeneration, and more particularly, it relates to a kind of alkaline etching liquid electrolysis cycle regeneration system rapidly.
Background technology
The typical process that printed circuit board (PCB) is processed adopts " graphic plating method ".Namely elder generation's (being the visuals of circuit) preplating one deck slicker solder resist layer in the outer Copper Foil part that need retain of plank, then chemically erodes remaining Copper Foil, is called etching.
In etching process, the copper on plate face is by [Cu (NH
3)
4]
2+complex ion is oxidized, and its etching reaction is as follows:
Cu(NH
3)
4 2++Cu →2Cu(NH
3)
2 +
[Cu (the NH generated
3)
2]
+for Cu
+complex ion, not there is etch capabilities.There iing excessive NH
3(SO
4 2+) when, can soon by the O in air
2be oxidized, generated [Cu (the NH with etch capabilities
3)
4]
2+complex ion, its regenerative response is as follows:
2Cu(NH
3)
2 ++2(NH
4)
++2NH
3+0.5O
2→2Cu(NH
3)
4 2++H
2O
Can find out from above-mentioned reaction, often etching 1 mol copper needs consumption 2 mol ammonia and 2 mol ammonium chlorides.Therefore, in etching process, along with the dissolving of copper, will constantly add ammoniacal liquor and ammonium chloride, thus etching bath mother liquor can constantly increase.Due to generated [Cu (NH
3)
2]
+for Cu
+complex ion, not there is etch capabilities, so must exclusive segment mother liquor, increase new sub-liquid (sub-liquid not copper ions) and meet and etch requirement.
Etching solution regeneration is applied in wiring board manufacturing enterprise more, and relative in wiring board manufacturing enterprise production technique, etching work procedure can be divided into: alkali etching, acid etching and microetch three kinds.
Wherein, alkali etching principle: in the etching process of wiring board, the copper ion concentration in etching solution can raise gradually and reduce etch effect, make the etch effect that etching solution reaches best, just must by the cupric ion (Cu in etching solution
2+), sulfate ion (SO
4 2-) and pH value remain in the scope of a reasonably stability, the optimum concn of above-mentioned various composition in etching solution be continued, just need constantly to add sub-liquid and replace " spent etching solution " i.e. " mother liquor " losing etch capabilities.I.e. " regeneration etching solution " this system then can become new sub-liquid by originally needing the mother liquor of discharge i.e. " spent etching solution " regeneration, the technique that this system mainly adopts now is electrolysis copper sulfate, main flow first uses the cupric ion in extraction agent extracting mother liquid, rich copper oil phase uses copper-bath (i.e. electrolytic solution) back extraction of lower concentration again, obtain the copper-bath (i.e. new electrolytic solution) of high density, then electrolyzing copper ion.Then needed by the etching solution after back extraction the supplement adding minute quantity, become sub-liquid and recycle.Also reclaim ammonia wash water simultaneously, ammonia wash water regeneration Posterior circle is utilized.
At present, application number is that the Chinese patent of CN201220013823.4 discloses a kind of regenerating alkaline etching liquid and copper recovery system, this system comprises extracting system, electrolytic system, power system and Controlling System 4 subsystems, extracting system is connected by connecting pipeline with electrolytic system, and described connecting pipeline comprises recycle pump, electric valve for pipeline door and transfer tank; Described power system is electrically connected with each recycle pump and electric valve for pipeline door; Described Controlling System is connected with power system.Be a kind of can by complete for spent etching solution cyclic regeneration, the electrolytic copper product that can obtain high economic worth, the regenerating alkaline etching liquid produced without any waste water and gas and copper recovery system.
But, this regenerating alkaline etching liquid and copper recovery system, it uses the copper ion concentration obtained in extraction agent extraction process to have certain ultimate value (in extraction agent, copper ion concentration is difficult to improve again), therefore in follow-up stripping process, a large amount of time is needed to carry out back extraction, therefore how improve copper ion concentration in extraction agent further, and to reduce the time required in stripping process be still a problem to be solved.
Utility model content
For the deficiency that prior art exists, the purpose of this utility model is to provide a kind of alkaline etching liquid electrolysis cycle regeneration system rapidly, can further improve copper ion concentration in extraction agent, reduce the time required in stripping process, improve the working efficiency of alkaline etching liquid electrolysis cycle regeneration system rapidly.
For achieving the above object, the utility model provides following technical scheme: a kind of alkaline etching liquid electrolysis cycle regeneration system rapidly, comprising power and Controlling System, electrolytic system, extracting system, back extraction system, distribution system and storage device, in described extracting system, comprising the reverse osmosis unit for improving copper ion concentration in extraction agent; Power and Controlling System, be connected with electrolytic system, extracting system, back extraction system, distribution system, for controlling each system cloud gray model; Extracting system, is comprised the extraction cylinder and reverse osmosis unit that connect successively, is extracted by extraction agent to the cupric ion in spent etching solution; Back extraction system, for preparing the cupric ion electrolytic solution of high density by cupric ion in extraction agent; Electrolytic system, is connected with back extraction system pipeline, for electrolytic copper ion electrolytic solution, prepares copper; Distribution system, is connected with storage device with back extraction system, extracting system by pipeline, the liquid produced is carried out distribution conveying in each system; Storage device, is connected with extracting system and distribution system pipeline, for storing in etching solution regenerative process each class I liquid I produced.
By adopting technique scheme, utilize " extracting back extraction one acid copper " technique, after being interconnected with etching machine, automated cycle operates, carry out recovery and the reproduction operation of etching solution and ammonia wash water, etch effect is stablized, totally enclosed system, without waste water, waste gas and waste discharge, etching work procedure can be made to become cleaner production operation.Wherein, the reverse osmosis unit in extracting system is used for increasing copper ion concentration in extraction agent further, reduces the time needed for stripping process, improves the working efficiency of alkaline etching liquid electrolysis cycle regeneration system rapidly.
The utility model is set to further: described extraction cylinder comprises the first extraction cylinder and the second extraction cylinder, first extraction cylinder, the second extraction cylinder and reverse osmosis unit series connection, second extraction cylinder connects the first extraction cylinder and reverse osmosis unit, and reverse osmosis unit connects distribution system.
By adopting technique scheme, the first extraction cylinder is used for preliminary extraction, and the second extraction cylinder is used for extracting mother liquor further, improves percentage extraction, increases the content of cupric ion in extraction agent.
The utility model is set to further: described back extraction system comprises the back extraction cylinder of multiple parallel connection.
By adopting technique scheme, the back extraction cylinder of multiple parallel connection works simultaneously, reduces the time required in stripping process, reduces the time needed for stripping process, improves the working efficiency of alkaline etching liquid electrolysis cycle regeneration system rapidly.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model alkaline etching liquid electrolysis cycle regeneration system rapidly embodiment;
Fig. 2 is the concrete structure connection diagram of the utility model alkaline etching liquid electrolysis cycle regeneration system rapidly embodiment;
Fig. 3 is the process flow sheet of the utility model alkaline etching liquid electrolysis cycle regeneration system rapidly embodiment.
Embodiment
Referring to figs. 1 through Fig. 3, the utility model alkaline etching liquid electrolysis cycle regeneration system rapidly embodiment is described further.
Fig. 2 is the concrete structure connection diagram of the present embodiment, and a kind of alkaline etching liquid electrolysis cycle regeneration system rapidly, this system comprises extracting system, back extraction system, distribution system, electrolytic system, power and Controlling System.
Power and Controlling System, be connected with electrolytic system, extracting system, back extraction system, distribution system, for controlling each system cloud gray model; Wherein, each system is connected by pipeline, and pipeline comprises recycle pump, electric valve for pipeline door and transfer tank; Power and Controlling System are electrically connected with each recycle pump and electric valve for pipeline door, for the flowing of liquid in the keying of by-pass valve control and pipeline.
Extracting system, comprise ammonia wash water extraction cylinder and the first extraction cylinder of connecting successively, the second extraction cylinder, reverse osmosis unit, the first extraction cylinder is used for preliminary extraction, and the second extraction cylinder is used for extracting mother liquor after the first step extraction further, improve percentage extraction, increase the content of cupric ion in extraction agent.By reverse osmosis unit, reverse osmosis is carried out to the extraction agent of reextraction afterwards, extraction agent is wherein discharged, thus improves copper ion concentration further, make copper ion concentration break through the ultimate value of extraction agent.Ammonia wash water extraction cylinder is connected with distribution system.
Wherein, reverse osmosis unit adopts
500L/H first-stage reverse osmosis treatment facilityreverse osmosis unit comprises reverse osmosis membrane, reverse osmosis membrane has barrier effect to cupric ion, sulfate ion, prevent it by reverse osmosis membrane, and extraction liquid and water is by reverse osmosis membrane, when reverse osmosis unit pressurizes, extraction liquid and water are by reverse osmosis membrane, and various ion cannot pass through, and extraction liquid intermediate ion (main purpose collects cupric ion) content is improved, purify to cupric ion in extraction liquid, the copper ion concentration in the extraction liquid that reverse osmosis obtains is higher.
Back extraction system, for preparing the copper sulfate electrolyte of high density by cupric ion in extraction agent; Comprise 2 back extraction cylinders in parallel (secondary mixing round trip back extraction cylinder can be called), the back extraction cylinder of multiple parallel connection works simultaneously, reduce the time required in stripping process, reduce the time needed for stripping process, improve the working efficiency of alkaline etching liquid electrolysis cycle regeneration system rapidly.The copper-bath that back extraction obtains, is delivered to the Ac cylinder in electrolytic system.
Electrolytic system, comprises Ac cylinder and electrolyzer, and Ac cylinder is for collecting the high-concentration sulfuric acid copper solutions in back extraction cylinder, and electrolyzer is used for electrolysis copper sulfate electrolyte, prepares copper (this electrolysis process is called for short electrodeposition, is arranged in Fig. 3).Copper-bath copper ion concentration after electrodeposition reduces, and is delivered in back extraction cylinder, prepares high-concentration sulfuric acid copper solutions for back extraction, reach a circulation with this.
Distribution system, is connected with storage device with back extraction system, extracting system by pipeline, the liquid produced is carried out distribution conveying in each system; Comprise inhale copper agent circulation cylinder and for store each class I liquid I with rear liquid bath, with rear tank, regeneration tank, regeneration liquid bath.Wherein inhaling copper agent circulation cylinder to be connected with reverse osmosis unit, back extraction cylinder, for storing the high density cupric ion extraction agent that reverse osmosis obtains, and extraction agent being delivered in back extraction cylinder, realize the conveying of cupric ion in the collection of extraction agent and stripping process.
Storage device, is connected with extracting system and distribution system pipeline, for storing in etching solution regenerative process each class I liquid I produced.
The above is only preferred implementation of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (3)
1. an alkaline etching liquid electrolysis cycle regeneration system rapidly, comprising power and Controlling System, electrolytic system, extracting system, back extraction system, distribution system and storage device, it is characterized in that: in described extracting system, comprising the reverse osmosis unit for improving copper ion concentration in extraction agent;
Power and Controlling System, be connected with electrolytic system, extracting system, back extraction system, distribution system, for controlling each system cloud gray model;
Extracting system, is comprised the extraction cylinder and reverse osmosis unit that connect successively, is extracted by extraction agent to the cupric ion in spent etching solution;
Back extraction system, for preparing the cupric ion electrolytic solution of high density by cupric ion in extraction agent;
Electrolytic system, is connected with back extraction system pipeline, for electrolytic copper ion electrolytic solution, prepares copper;
Distribution system, is connected with storage device with back extraction system, extracting system by pipeline, the liquid produced is carried out temporary reservoir and distribute conveying in each system;
Storage device, is connected with etching machine, extracting system and distribution system pipeline, for storing etching solution and regeneration etching solution.
2. alkaline etching liquid electrolysis cycle regeneration system rapidly according to claim 1, it is characterized in that: described extraction cylinder comprises the first extraction cylinder and the second extraction cylinder, first extraction cylinder, the second extraction cylinder and reverse osmosis unit series connection, second extraction cylinder connects the first extraction cylinder and reverse osmosis unit, and reverse osmosis unit connects distribution system.
3. alkaline etching liquid electrolysis cycle regeneration system rapidly according to claim 1 and 2, is characterized in that: described back extraction system comprises the back extraction cylinder of multiple parallel connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520197326.8U CN204625787U (en) | 2015-04-02 | 2015-04-02 | A kind of alkaline etching liquid electrolysis cycle regeneration system rapidly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520197326.8U CN204625787U (en) | 2015-04-02 | 2015-04-02 | A kind of alkaline etching liquid electrolysis cycle regeneration system rapidly |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105506636A (en) * | 2016-02-02 | 2016-04-20 | 深圳中能润德环保有限公司 | Cyclic regeneration system and method for extracting waste cupric liquor |
| CN106702387A (en) * | 2015-11-18 | 2017-05-24 | 陶克（苏州）机械设备有限公司 | On-line alkaline ammonium sulfate etching waste liquid cyclic regeneration system |
-
2015
- 2015-04-02 CN CN201520197326.8U patent/CN204625787U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702387A (en) * | 2015-11-18 | 2017-05-24 | 陶克（苏州）机械设备有限公司 | On-line alkaline ammonium sulfate etching waste liquid cyclic regeneration system |
| CN105506636A (en) * | 2016-02-02 | 2016-04-20 | 深圳中能润德环保有限公司 | Cyclic regeneration system and method for extracting waste cupric liquor |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: 215311 room 2, No. 285, Cheng Xiang Road, Ba Town, Kunshan, Suzhou, Jiangsu. Patentee after: Jiangsu s security environmental protection science and technology limited company Address before: 215311 No. 285, Cheng Xiang Road, Ba Town, Kunshan City, Suzhou, Jiangsu. Patentee before: KUNSHAN GSA ENVIRONMENTAL CO., LTD. |