CN209555373U - A kind of acidity etching liquid recycling system - Google Patents
A kind of acidity etching liquid recycling system Download PDFInfo
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- CN209555373U CN209555373U CN201920059766.5U CN201920059766U CN209555373U CN 209555373 U CN209555373 U CN 209555373U CN 201920059766 U CN201920059766 U CN 201920059766U CN 209555373 U CN209555373 U CN 209555373U
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- 239000007788 liquid Substances 0.000 title claims abstract description 126
- 238000005530 etching Methods 0.000 title claims abstract description 75
- 238000004064 recycling Methods 0.000 title claims abstract description 27
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 36
- 239000002699 waste material Substances 0.000 claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 claims abstract description 24
- 238000005342 ion exchange Methods 0.000 claims abstract description 22
- 238000012806 monitoring device Methods 0.000 claims abstract description 18
- 239000002253 acid Substances 0.000 claims description 70
- 239000003595 mist Substances 0.000 claims description 69
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 42
- 239000000460 chlorine Substances 0.000 claims description 42
- 229910052801 chlorine Inorganic materials 0.000 claims description 42
- 238000010521 absorption reaction Methods 0.000 claims description 34
- 239000010949 copper Substances 0.000 claims description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 27
- 229910052802 copper Inorganic materials 0.000 claims description 27
- 230000007246 mechanism Effects 0.000 claims description 22
- 239000007921 spray Substances 0.000 claims description 20
- 238000005507 spraying Methods 0.000 claims description 13
- 238000005086 pumping Methods 0.000 claims description 11
- 238000000605 extraction Methods 0.000 claims description 9
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 8
- 239000010936 titanium Substances 0.000 claims description 8
- 229910052719 titanium Inorganic materials 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 16
- 230000002378 acidificating effect Effects 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 36
- 229910052742 iron Inorganic materials 0.000 description 18
- 239000007789 gas Substances 0.000 description 17
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 16
- 239000000126 substance Substances 0.000 description 16
- 229910001431 copper ion Inorganic materials 0.000 description 10
- 230000006872 improvement Effects 0.000 description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 239000002351 wastewater Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000033116 oxidation-reduction process Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 241001465754 Metazoa Species 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
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- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004070 electrodeposition Methods 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
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- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
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- 230000000694 effects Effects 0.000 description 1
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- 239000002659 electrodeposit Substances 0.000 description 1
- 238000000866 electrolytic etching Methods 0.000 description 1
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- ing And Chemical Polishing (AREA)
Abstract
The utility model discloses a kind of acidity etching liquid recycling systems, monitoring device is deployed including a waste liquid barrel, a regenerated liquid bucket, an electrolysis with ion-exchange film circulator and a regenerated liquid, wherein, the waste liquid barrel is respectively connected to electrolysis with ion-exchange film circulator and at least one etching production line, the regenerated liquid bucket is respectively connected to electrolysis with ion-exchange film circulator and regenerated liquid deploys monitoring device, regenerated liquid allotment monitoring device is connected at least one etching production line, to form closed circuit circulatory system.Acidity etching liquid recycling system provided by the utility model, can reach regenerate failed acidic etching liquid and be recycled, the purpose of zero-emission, high degree of automation, process amount is big, and stability is good, safe ready.
Description
Technical field
The utility model relates to a kind of etching technique field more particularly to a kind of acidity etching liquid recycling systems.
Background technique
In the past 20 years, Chinese PCB industry is always maintained at the annual growth rate of 10-00%, and there are many PCB of scale at present
More than 3500 families, enterprise, monthly output reach 1.2 hundred million square metres.Etching is the biggish process of liquid medicine amount to be consumed in PCB production, and generate
Waste liquid and the maximum process of waste water, it is however generally that, the dual platen of every one square metre of normal thickness (18 μm) of production consumes etching solution
About 2-3 liter, and generate spent etching solution 2-3 liter.China's PCB industry monthly consumes 60,000 ton/month of refined copper or more, the copper etching of output
Total amount of copper causes seriously the society's especially water resource of PCB factory surrounding area and soil in 50,000 tons/month or more in waste liquid
Pollution.
Copper is that one kind is present in soil and the intracorporal heavy metal element of people and animals, in soil content generally in 0.2ppm or so,
With people and animals' intracorporal enzyme precipitating/complex reaction can occur for excessive copper, and poisoning by enzyme occurs and loses physiological function.In nature
Copper is transferred in people and animals' body by water body, plant etc., is made one to raise intracorporal Equilibrium of Trace Elements and be destroyed, heavy metal is caused to exist
Intracorporal abnormal accumulation generates the results such as denaturation, carcinogenicity of causing a disease.
Therefore, occurred the related system of spent etching solution recycling on the market, however, current technology, according to
So there is the phenomenon that discharging of waste liquid, can not accomplish complete recycling and reusing, the effect of zero-emission.
Utility model content
In view of the above deficiencies, reachable the purpose of this utility model is to provide a kind of acidity etching liquid recycling system
To regenerating failed acidic etching liquid and be recycled, the purpose of zero-emission, high degree of automation, process amount is big,
Stability is good, safe ready.
Used technical solution is the utility model in order to achieve the above objectives:
A kind of acidity etching liquid recycling system, which is characterized in that including a waste liquid barrel, a regenerated liquid bucket, an ion
Film electrolysis cycle device and a regenerated liquid deploy monitoring device, wherein the waste liquid barrel is respectively connected to electrolysis with ion-exchange film circulation dress
It sets and is respectively connected to electrolysis with ion-exchange film circulator and regenerated liquid allotment monitoring dress at least one etching production line, the regenerated liquid bucket
It sets, regenerated liquid allotment monitoring device is connected at least one etching production line, to form closed circuit circulatory system.
The electrolysis with ion-exchange film circulator includes several electrolytic cells and sets as a further improvement of the utility model,
Be placed in the one of electrolytic cell tail end and wash copper cylinder, wherein the electrolytic cell include a circulation cylinder, the tank house being set in circulation cylinder,
Be formed in circulation cylinder and enclose set on tank house periphery a chlorine chamber and be set to circulation cylinder outside and be connected with chlorine chamber
An extraction sector；The tank house include an anode chamber, a cathode chamber and for being spaced anode chamber and cathode chamber one it is compound every
Film offers several openings being connected with chlorine chamber on the electrolysis chamber outer wall top；The extraction sector includes being set to circulation
Several suction branches of cylinder periphery, the suction branch upper end are connected on circulation cylinder outer wall and are connected with chlorine chamber, lower end to
Lower bending.
The extraction sector further includes being set to outside circulation cylinder and being connected to as a further improvement of the utility model,
One pumping main pipeline of regenerated liquid bucket and the exhaust fan being connected on pumping main pipeline, wherein suction branch lower end connection
In on pumping main pipeline, and the suction branch upper end is provided with a gas valve.
An anode titanium plate is provided in the anode chamber as a further improvement of the utility model, in the cathode
Interior is provided with a cathode titanium plates.
It as a further improvement of the utility model, further include the acid mist absorption for being connected to regenerated liquid allotment monitoring device
Subsystem, the acid mist absorb subsystem and include several acid mist absorbing devices arranged side by side and be connected to regenerated liquid allotment monitoring
Device and the chlorine siphunculus for being respectively connected to acid mist absorbing device are respectively arranged on the chlorine siphunculus and absorb dress with acid mist
Set one-to-one control valve.
The acid mist absorbing device includes being connected at least with chlorine siphunculus as a further improvement of the utility model,
One gas-liquid mixed slot, stacks the absorption chamber of acid mist once that upper acid mist absorption chamber lower end is arranged, connection at acid mist absorption chamber at least one
Runner pipe, the water pump for being connected to gas-liquid mixed slot and company on a liquid between gas-liquid mixed slot and upper acid mist absorption chamber
It is connected to runner pipe under the liquid between acid mist absorption chamber and lower acid mist absorption chamber.
The upper acid mist absorption chamber is identical as lower acid mist absorption cell structure as a further improvement of the utility model, point
Not Bao Kuo a spray chamber, be set to a spraying mechanism of spray chamber internal upper part and be set in spray chamber and be located at spraying mechanism
Several supporting mechanisms of lower section.
The spraying mechanism includes a spray disk body, is uniformly arranged on spray as a further improvement of the utility model,
Several solid cone nozzles at disk body lower end surface edge, wherein a liquid accommodating cavity is provided in the shower tray body, this is several
Solid cone nozzle is connected with liquid accommodating cavity.
The supporting mechanism includes for a support frame and being set to support as a further improvement of the utility model,
A hang plate of bottom in framework, and the support frame and hang plate are reticular structure.
The utility model has the following beneficial effects: acidity etching liquid recycling system is designed as closed circuit circulatory system, it is
The closed cycle regeneration technology of acidic etching liquid provides safeguard, and makes to reach and failed acidic etching liquid is made to regenerate and recycle
Purpose, high degree of automation, process amount is big, and stability is good, safe ready.
Above-mentioned is the general introduction of utility model technical solution, below in conjunction with attached drawing and specific embodiment, to the utility model
It is described further.
Detailed description of the invention
Fig. 1 is the whole functional block diagram of the utility model；
Fig. 2 is the structural schematic diagram of the utility model electrolytic cell；
Fig. 3 is the structural schematic diagram of the utility model acid mist absorbing device；
Fig. 4 is the structural schematic diagram inside the utility model spray chamber.
Specific embodiment
Further to illustrate that the utility model is the technical means and efficacy for reaching predetermined purpose and being taken, below in conjunction with
Specific embodiment of the present utility model is described in detail in attached drawing and preferred embodiment.
Fig. 1 to Fig. 4 is please referred to, the utility model embodiment provides a kind of acidity etching liquid recycling system, including
One waste liquid barrel, a regenerated liquid bucket, an electrolysis with ion-exchange film circulator and a regenerated liquid deploy monitoring device, wherein the waste liquid barrel
It is respectively connected to electrolysis with ion-exchange film circulator and at least one etching production line, which is respectively connected to electrolysis with ion-exchange film
Circulator and regenerated liquid deploy monitoring device, and regenerated liquid allotment monitoring device is connected at least one etching production line, with shape
At closed circuit circulatory system.
It is the closed cycle regeneration technology of acidic etching liquid by acidity etching liquid recycling system provided in this embodiment
It provides safeguard, to realize the purpose of etching solution very recycling and reusing and zero-emission.
In the present embodiment, regenerated liquid allotment monitoring device includes a regenerated liquid dispensing cylinder, at acidic etching waste liquid
The regenerated liquid that reason generates could make after needing to deploy its indices parameter as the acidic etching liquid of composite demand
With.
In the present embodiment, the electrolysis with ion-exchange film circulator include several electrolytic cells 1 (such as Fig. 1, No.1 electrolytic cell with
No. two electrolytic cells) and be set to the one of electrolytic cell tail end and wash copper cylinder, wherein the electrolytic cell 1 includes a circulation cylinder 11, is set to
A tank house 12 in circulation cylinder 11, be formed in circulation cylinder 11 and enclose set on 12 periphery of tank house a chlorine chamber 13 and set
The extraction sector 14 for being placed in 11 outside of circulation cylinder and being connected with chlorine chamber 13, the tank house 12 include an anode chamber 121, one
Cathode chamber 122 and a composite diaphragm 123 for being spaced anode chamber 121 Yu cathode chamber 122, are provided in the anode chamber 121
One anode titanium plate 124 is provided with a cathode titanium plates 125 in the cathode chamber 122.After electrolysis, the copper simple substance of generation is deposited on yin
In pole titanium plate 125, monolith copper sheet is formed, after copper sheet is removed from cathode titanium plate 125, is put into and washes cleaning in copper cylinder.
Meanwhile several openings 126 being connected with chlorine chamber 13 are offered on the 12 outer wall top of tank house, make in cathode
Hydrochloric acid escaping gas in room and the chlorine generated under emergency case, under the action of extraction sector 14, from opening 126 into
Enter in chlorine chamber 13.Specifically, the extraction sector 14 includes the pumping for being set to 11 outside of circulation cylinder and being connected to regenerated liquid bucket
Gas main pipeline 141, the exhaust fan 142 being connected on pumping main pipeline 141 and several pumpings for being set to 11 periphery of circulation cylinder
Branch pipe 143,143 upper end of suction branch are connected on 11 outer wall of circulation cylinder and are connected with chlorine chamber 13, and lower end is bent downward
And be connected on pumping main pipeline 141,143 upper end of suction branch is provided with a gas valve 1431.The present embodiment is in electricity
When solving 1 internal cause of slot electrolysis generation high temperature, it will appear condensed water in suction branch 143, traditional suction branch 143 is using by outlet
The structure design being folded upward at is held, i.e. outlet side is higher than inlet end, causes to ventilate in condensing drip to gas valve 1431
The phenomenon that valve 1431 blocks.The present embodiment suction branch 143 is by the way of bending downward, i.e., inlet end is higher than outlet side,
It effectively prevents the phenomenon that blocking of gas valve 1431 occur, guarantees being normally carried out for pumping.
As further improvement of this embodiment, acidity etching liquid recycling system further includes being connected to regenerated liquid allotment
One acid mist of monitoring device absorbs subsystem, the acid mist absorb subsystem include several acid mist absorbing devices 2 arranged side by side and
It is connected to regenerated liquid allotment monitoring device and is respectively connected to a chlorine siphunculus 3 of acid mist absorbing device 2, in the chlorine siphunculus 3
On be respectively arranged with and the one-to-one control valve 31 of acid mist absorbing device 2.
Specifically, the acid mist absorbing device 2 includes at least gas-liquid mixed slot 21 being connected with chlorine siphunculus, at least
Acid mist absorption chamber 22, stacking are arranged the absorption chamber of acid mist once 23 of upper 22 lower end of acid mist absorption chamber, are connected to gas-liquid mixed on one
Runner pipe 24, the water pump 25 for being connected to gas-liquid mixed slot 21 and company on a liquid between slot 21 and upper acid mist absorption chamber 22
It is connected to runner pipe under the liquid between acid mist absorption chamber 24 and lower acid mist absorption chamber 23, wherein the upper acid mist absorption chamber
24 is identical as lower acid mist 23 structures of absorption chamber, below the structure of following acid mist absorption chamber 23 be illustrated, lower acid mist absorption chamber 23
Including a spray chamber 231, it is set to a spraying mechanism 232 of 231 internal upper part of spray chamber and is set in spray chamber 231 and position
Several supporting mechanisms 233 in 232 lower section of spraying mechanism.
By the chlorine generated in electrolysis with ion-exchange film circulator Inner electrolysis, there is 60-80% chlorine to enter together with regenerated liquid
It etches in production line, remaining 20-40% chlorine enters acid mist together with other exhaust gas and absorbs in subsystem, absorbs into acid mist
Exhaust gas in subsystem, initially enters gas-liquid mixed slot 21 and solution hybrid reaction generates acid mist, and acid mist is by runner pipe on liquid
24 enter upper acid mist absorption chamber 22, and the spraying mechanism 232 in upper acid mist absorption chamber 22 is by acid mist spray to positioned at supporting mechanism
On iron substance on 233, and with iron substance haptoreaction, absorb acid mist, have reached the chlorine partially absorbed in processing exhaust gas
Purpose；Then, lower acid mist absorption chamber 23 is not entered by runner pipe under liquid with the catalytic acid mist of iron substance, is inhaled in lower acid mist
The spraying mechanism 232 received in room 23 sprays acid mist onto the iron substance being located on supporting mechanism 233, and contacts instead with iron substance
It answers, fully and completely absorbs processing acid mist, the i.e. purpose of chlorine in exhaust gas to reach, the complete of chlorine absorption greatly improved
Property.Reacting resulting ferric trichloride can be used as the flocculant use of waste water station, instead of aluminium polychloride, moreover it is possible to reduce at waste water
Reason expense, treated gas after the purification of exhaust gas tower using just discharging.
In the present embodiment, specifically, the spraying mechanism 232 includes a spray disk body 2321, is uniformly arranged on shower tray
Several solid cone nozzles 2322 at 2321 lower end surface edge of body, are provided with a liquid accommodating cavity in the spray disk body 2321,
Several solid cone nozzles 2322 are connected with liquid accommodating cavity.The present embodiment is using equally distributed several solid circular cone sprays
Mouth 2322 is designed as the nozzle sets of spraying mechanism 232, can be with since solid cone nozzle 2322 is in a circular region
Form uniform liquid distribution, and the combination of multiple solid cone nozzles 2322, the intersection of multiple border circular areas can be formed, is made
Acid mist can be in a wide range of interior a large amount of sprays, so that making the iron substance of the 232 each position in lower section of spraying mechanism can touch greatly
The acid mist of amount, so that iron be enable comprehensively to touch a large amount of acid mist, to improve the speed that chlorine is reacted with iron, reaction is more comprehensively
Thoroughly.
Meanwhile in the present embodiment, which includes for a support frame 2331 and being set to support frame
A hang plate 2332 of bottom in 2331, and the support frame 2331 and hang plate 2332 are reticular structure.Specifically used
When, iron substance (such as scrap iron) is put into support frame 2331, due to the presence of 2331 inner inclined plate 2332 of support frame, is made
One end of iron substance tilts, and increases the exposed area of iron substance, thus increase with the catalytic iron substance area of acid mist,
Improve the speed for absorbing chlorine；Meanwhile support frame 2331 and hang plate 2332 are disposed as reticular structure, acid mist can be from net
Shape structure enters inside support frame 2331, contacts with iron substance surface, contact each surface of iron substance can with acid mist, increases
Big haptoreaction area, further increases the speed for absorbing chlorine.
The utility model embodiment also provides the acidity etching liquid recycling method based on above system, including following step
It is rapid:
(1) it is stored in waste liquid barrel by the etching waste liquor that etching production line generates, the etching waste liquor in waste liquid barrel passes through certainly
Dynamic detection addition manner is added in electrolysis with ion-exchange film circulator；
(2) electrolysis is carried out to etching waste liquor by electrolysis with ion-exchange film circulator and generates regenerated liquid and elemental copper, regenerated liquid storage
It is stored in regenerated liquid bucket, elemental copper is removed by the form of copper sheet；
(3) oxidant, hydrochloric acid and the regenerated liquid being stored in regenerated liquid bucket are added to regenerated liquid allotment monitoring dress respectively
In setting, detection allotment is carried out to regenerated liquid by several detectors in regenerated liquid allotment monitoring device, makes the oxidation of regenerated liquid also
Between 480-520mv, copper concentration is back in etching production line former current potential range within the scope of 30-60g/L, then by regenerated liquid
It uses.In the present embodiment, several detectors include specific gravity detector, ORP monitor, acidometer and flowmeter, in real time to whole
The operation data of set system is controlled, and the labor intensity of employee has not only been reduced, but also can be good at the normal fortune of guarantee system
Turn.
In the step (1), specifically includes the following steps:
(1.1) oxidation reduction potential value that etching solution in etching production line is detected by ORP monitor real time sample, if oxidation
Reduction potential value then constantly repeats the step within the scope of 480-520mv, and executes step (1.2), otherwise, in waste liquid barrel
Etching waste liquor is automatically added in electrolysis with ion-exchange film circulator；
(1.2) copper concentration that etching solution in etching production line is detected by specific gravity detector real time sample, if copper concentration is 30
When within the scope of~60g/L, then the step is constantly repeated, otherwise, the etching waste liquor in waste liquid barrel is automatically added to electrolysis with ion-exchange film
In circulator.
In the step (2), specific electrolytic process the following steps are included:
(2.1) the low etching waste liquor of oxidation reduction potential value enters from anode chamber's low level of electrolysis with ion-exchange film circulator,
Under electrolysis, the univalent copper ion in etching waste liquor loses electronics in anode and is oxidized to bivalent cupric ion, bivalent cupric ion
Increase, univalent copper ion reduces or eliminates, and obtains the high regenerated liquid of oxidation reduction potential value, regenerated liquid is by the high bit stream in anode chamber
Out, it and is stored in regenerated liquid bucket；
(2.2) etching waste liquor of high copper enters from the cathode chamber low level of electrolysis with ion-exchange film circulator, makees in electrolysis
Under, regeneration that copper ion is reduced into copper simple substance to reduce copper ion concentration, after reducing copper ion concentration content in cathode
Liquid is flowed out from a cathode chamber high position, and is stored in regenerated liquid bucket；
Step (2.1) and step (2.2) are without sequencing.
It is continuous processing that acidic etching waste liquid, which enters electrolysis with ion-exchange film circulator, etches the acidity of low ORP in production line
Etching waste liquor enters, monovalence of the etching waste liquor under electrolysis, in acidic etching waste liquid from ion-exchange membrane electrolyzer anode low level
Copper ion loses electronics in anode and is oxidized to bivalent cupric ion, and bivalent cupric ion increases, and univalent copper ion reduces or eliminates, and improves
The oxidability of etching solution, ORP are increased, and the acidic etching liquid of high ORP again outflows back to etching production line through an anode region high position
It is etched process, guarantees the needs that etching work procedure normally produces.
Cell reaction mechanism are as follows:
Anode: 2Cl-→Cl2+2e 2CuCl+Cl2→2CuCl2
The etching waste liquor of high copper from ion-exchange membrane electrolyzer cathodic region low level enter, etching waste liquor under electrolysis,
Copper ion therein is reduced to copper simple substance in cathode to make copper ion concentration reduce, and reduces the etching after content of copper ion
Waste liquid is flowed out from a cathode high position, and etching production line is returned after formulated and is etched process, forms solution circulation loop.
Electrodeposit reaction mechanism:
Cathode: Cu2++ 2e=Cu
Electro-deposition control is predominantly according to etching solution specific gravity control, and Cu concentration is substantially 30 to 60g/L after electro-deposition.
The present embodiment acidity etching liquid recycling method is further comprising the steps of:
(4) regenerated liquid bucket is sequentially entered in the chlorine that electrolysis with ion-exchange film circulator Inner electrolysis generates and regenerated liquid allotment is supervised
Device is controlled, and has 60-80% chlorine to enter in etching production line together with regenerated liquid, remaining 20-40% chlorine enters acid mist
It absorbs in subsystem, absorbs the chlorine in subsystem into acid mist and generate acid mist with solution hybrid reaction first, then acid mist is adopted
With the iron substance haptoreaction in the mode and acid mist absorbing device of jet stream, to absorb processing acid mist.
The entire electrolytic process of the present embodiment is carried out under chloride system, and in cathodic region, hydrochloric acid is due to being easier
Volatilization is controlled although the main ORP value by controlling medium of generation in anode region chlorine reaches control chlorine release in ORP
Under the emergency situations of failure processed, when the excessively high chlorine of ORP is precipitated, need effectively to be handled these gases.
The present embodiment is handled acid mist using jet stream absorption+iron reaction principle, to realize to the absorption of chlorine
Reason, reacting resulting ferric trichloride can be used as the flocculant use of waste water station, instead of aluminium polychloride, moreover it is possible to reduce at waste water
Reason expense, treated gas after the purification of exhaust gas tower using just discharging.
Acidity etching liquid recycling technique provided by the embodiment of the utility model has including following advantage:
(1) by the ORP value of real-time measure and control electrolytic etching liquid, the effective generation for controlling chlorine, make monovalence copper from
Son becomes bivalent cupric ion, restores etch capabilities, completely returns to production, realize the closed cycle of acidic etching liquid, etching solution hundred
Divide hundred recycling and reusings, achieve the purpose that zero-emission, reduces and even cancel production oxidant used, saving production material,
Production cost is reduced, the discharge of pollutant is greatly reduced, realizes clean manufacturing；
(2) ion-exchange membrane electrolysis is utilized, extracts copper purity up to 99.5% or more, and copper sheet, staff labor intensity can be generated
Small, copper selling price is high, brings economic benefit；
(3) jet stream absorption is carried out to the hydrochloric acid escaping gas of cathode chamber and the chlorine generated under emergency case and iron is anti-
The technique that should be neutralized avoids exhaust gas excessive, guarantees the safety of system；
(4) high degree of automation, system operation maintenance is simple, does not influence to produce in installation and debugging.
The above descriptions are merely preferred embodiments of the present invention, not makees to the technical scope of the utility model
Any restrictions, therefore technical characteristic identical or approximate with the utility model above-described embodiment is used, and obtained other structures,
It is within the protection scope of the utility model.
Claims (9)
1. a kind of acidity etching liquid recycling system, which is characterized in that including a waste liquid barrel, a regenerated liquid bucket, an ionic membrane
Electrolysis cycle device and a regenerated liquid deploy monitoring device, wherein the waste liquid barrel is respectively connected to electrolysis with ion-exchange film circulator
With at least one etching production line, which is respectively connected to electrolysis with ion-exchange film circulator and regenerated liquid allotment monitoring dress
It sets, regenerated liquid allotment monitoring device is connected at least one etching production line, to form closed circuit circulatory system.
2. acidity etching liquid recycling system according to claim 1, which is characterized in that the electrolysis with ion-exchange film circulation
Device includes several electrolytic cells and is set to the one of electrolytic cell tail end and washes copper cylinder, wherein the electrolytic cell includes a circulation cylinder, sets
The tank house that is placed in circulation cylinder is formed in circulation cylinder and the chlorine chamber and being set to enclosed set on tank house periphery follows
The extraction sector being connected outside ring cylinder and with chlorine chamber；The tank house is including an anode chamber, a cathode chamber and for being spaced
One composite diaphragm of anode chamber and cathode chamber offers several openings being connected with chlorine chamber on the electrolysis chamber outer wall top；
The extraction sector includes several suction branches for being set to circulation cylinder periphery, which is connected on circulation cylinder outer wall
And be connected with chlorine chamber, lower end is bent downward.
3. acidity etching liquid recycling system according to claim 2, which is characterized in that the extraction sector further includes
The exhausting for being set to outside circulation cylinder and being connected to a pumping main pipeline of regenerated liquid bucket and being connected on pumping main pipeline
Machine, wherein the suction branch lower end is connected on pumping main pipeline, and the suction branch upper end is provided with a gas valve.
4. acidity etching liquid recycling system according to claim 2, which is characterized in that be arranged in the anode chamber
There is an anode titanium plate, a cathode titanium plates are provided in the cathode chamber.
5. acidity etching liquid recycling system according to claim 1, which is characterized in that further include being connected to regenerated liquid
The acid mist for deploying monitoring device absorbs subsystem, and it includes that several acid mists arranged side by side absorb dress which, which absorbs subsystem,
It sets and is connected to regenerated liquid allotment monitoring device and be respectively connected to a chlorine siphunculus of acid mist absorbing device, it is logical in the chlorine
It is respectively arranged on pipe and the one-to-one control valve of acid mist absorbing device.
6. acidity etching liquid recycling system according to claim 5, which is characterized in that the acid mist absorbing device packet
At least gas-liquid mixed slot being connected with chlorine siphunculus, acid mist absorption chamber at least one are included, stacks upper acid mist absorption chamber is set
Runner pipe, connection on the absorption chamber of acid mist once of lower end, the liquid being connected between gas-liquid mixed slot and upper acid mist absorption chamber
The runner pipe under the water pump and the liquid that is connected between upper acid mist absorption chamber and lower acid mist absorption chamber of gas-liquid mixed slot.
7. acidity etching liquid recycling system according to claim 6, which is characterized in that the upper acid mist absorption chamber with
Lower acid mist absorption cell structure is identical, respectively includes a spray chamber, is set to a spraying mechanism of spray chamber internal upper part and is set to
Several supporting mechanisms in spray chamber and below spraying mechanism.
8. acidity etching liquid recycling system according to claim 7, which is characterized in that the spraying mechanism includes one
Spray disk body, several solid cone nozzles for being uniformly arranged on spray disk body lower end surface edge, wherein set in the shower tray body
It is equipped with a liquid accommodating cavity, which is connected with liquid accommodating cavity.
9. acidity etching liquid recycling system according to claim 7, which is characterized in that the supporting mechanism includes being
One support frame and the hang plate for being set to bottom in support frame, and the support frame and hang plate are reticular structure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN201821373214 | 2018-08-24 | ||
| CN2018213732143 | 2018-08-24 |
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| CN209555373U true CN209555373U (en) | 2019-10-29 |
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| CN201920059766.5U Expired - Fee Related CN209555373U (en) | 2018-08-24 | 2019-01-15 | A kind of acidity etching liquid recycling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394729A (en) * | 2020-04-26 | 2020-07-10 | 江苏地一环保科技有限公司 | Electrolytic device and printed board acid etching waste liquid regeneration and copper recovery equipment thereof |
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2019
- 2019-01-15 CN CN201920059766.5U patent/CN209555373U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111394729A (en) * | 2020-04-26 | 2020-07-10 | 江苏地一环保科技有限公司 | Electrolytic device and printed board acid etching waste liquid regeneration and copper recovery equipment thereof |
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