CN204779822U - Use electroreduction regeneration chlorine absorbing device - Google Patents
Use electroreduction regeneration chlorine absorbing device Download PDFInfo
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- CN204779822U CN204779822U CN201520546184.1U CN201520546184U CN204779822U CN 204779822 U CN204779822 U CN 204779822U CN 201520546184 U CN201520546184 U CN 201520546184U CN 204779822 U CN204779822 U CN 204779822U
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- chlorine
- chlorine absorption
- electroreduction
- jar
- cathode compartment
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Abstract
The utility model provides an use electroreduction regeneration chlorine absorbing device, it includes cation membrane electrolytic device, chlorine absorption jar and dope storage jar, chlorine absorb the jar with dope storage jar is connected, chlorine absorbs the jar and passes through trachea and etching solution recycle and regeneration product line connection, dope storage jar through add the pencil with the line connection is produced to etching solution recycle and regeneration, be provided with the ejector that supplies chlorine and ferrous chloride reaction in the chlorine absorption jar, cation membrane electrolytic device includes anode chamber, cathode chamber and connects the anode chamber with will between the cathode chamber the anode chamber reaches the cation membrane that the cathode chamber separates, the cathode chamber with chlorine absorbs jar circulating connection, above -mentioned structure can obtain the chlorine that acid etching waste liquor produced handling turning into hydrochloric acid in electrolysis regenerative process, when reducing the use amount of iron, still avoided the chlorine of production in the electrolytic process to discharge and the harm environment.
Description
Technical field
The utility model belongs to circuit card acidic etching liquid technical field, particularly relates to a kind of use electroreduction regeneration chlorine absorption unit of the chlorine produced in electrolytic process for the acidic etching waste liquid absorbing printed circuit board (PCB).
Background technology
Printed circuit board (pcb board) also claims printed circuit board (PCB), it take insulcrete as base material, be cut into certain size, at least with a conductive pattern on it, as substrate, and hole (as open holess such as component hole, firm hole, metal aperture) is provided with on substrate top, be used for replacing the chassis of device electronic devices and components in the past, realize the electrical connection between component pin by the conductive pattern on substrate, pad and metallization via hole.As the parts that electronic product is substantially the most also most crucial, printed circuit board is widely used on each electronic product and main equipment and device.
Current global printed circuit board (PCB) industry production value accounts for more than 1/4th of the electronic component industry gross output value, and be the industry that in each electronic component segmentation industry, proportion is maximum, industry size reaches 40,000,000,000 dollars.Meanwhile, due to its unique status in basic electronic industry, most active industry in contemporary electronic element industry has been become.Along with China's electronic industry annual growth is more than 20%, also driven printed circuit board (PCB) and related industries development, China has become the printed circuit board (PCB) production center the biggest in the world.
As everyone knows, chemical etching process manufactures requisite important step in printed circuit board (PCB) process at present, in printed circuit board (PCB) production process, usually with acid etching explained hereafter circuit card, therefore, will produce a large amount of this acidic etching waste liquids every year.And for the process of these acidic etching waste liquids, in current industry, the overwhelming majority adopts the mode of Direct Electrolysis to extract copper simple substance in etching waste liquor, remaining useless liquid medicine is led to toner regeneration, returning etching machine uses; Or by technical finesse, rear discharge up to standard.No matter adopt which kind of processing mode, in electrolytic process, inherently produce chlorine at anode.Traditional processing mode be directly by gas sampling to waste gas tower, by strong base solution spray-absorption.Conventional method adopts sodium hydroxide or iron protochloride to absorb, after process, sodium hydroxide can produce sodium-chlor and clorox, protochloride iron rule produces iron trichloride, and continuous hydrogen make-up sodium oxide or solution of ferrous chloride certainly will be wanted in the process constantly absorbing chlorine, a large amount of waste water will be produced like this, thus need secondary treatment.And if in liquor ferri trichloridi, add iron reduce, still need after iron trichloride concentration reaches capacity discharge, a large amount of molten iron of generation need alkali to neutralize, and processing cost is high, and the mud of generation is many.
Utility model content
Technical problem to be solved in the utility model is that providing a kind of uses electroreduction regeneration chlorine absorption unit, be intended to its chlorine that acidic etching waste liquid can be produced in electrolytic regeneration process absorb process completely and be converted into hydrochloric acid, while reducing the usage quantity of iron, also avoid the chlorine produced in electrolytic process and discharge and endanger environment.
The utility model realizes like this, a kind of electroreduction that uses regenerates chlorine absorption unit, the chlorine that the acidic etching waste liquid absorbing printed circuit board (PCB) produces in electrolytic process, it comprises cationic membrane electrolyzer, chlorine absorption cylinder and dope storage cylinder, described chlorine absorption cylinder is connected with described dope storage cylinder, described chlorine absorption cylinder produces line by tracheae and etching solution recycling and is connected, described dope storage cylinder produces line by chemical feed pipe and described etching solution recycling and is connected, the ejector for chlorine and iron protochloride reaction is provided with in described chlorine absorption cylinder, described cationic membrane electrolyzer comprises anolyte compartment, cathode compartment and be connected to the cationic membrane separated between described anolyte compartment and described cathode compartment and by described anolyte compartment and described cathode compartment, described cathode compartment circulates with described chlorine absorption cylinder and is connected.
Further, be provided with positive plate in aforesaid anolyte compartment, be provided with negative plate in described cathode compartment, described positive plate and described negative plate are electrically connected with the positive pole of direct supply and negative pole respectively.
Further, aforesaid positive plate adopts the materials such as the plating of graphite, lead alloy, titanium iridium oxide, tantalum oxide, ruthenium oxide coatings to make, and the solution of described anolyte compartment is dilution heat of sulfuric acid, and sulfuric acid content is 100-250g/L; Described negative plate adopts titanium or titanium alloy material to make, and the solution of described cathode compartment is ferric chloride Solution, and wherein iron ion content is 20-80g/L.
Further, the inlet pipe of aforesaid ejector connects the induced exhaust that described etching solution recycling produces line, and the liquid medicine that described ejector uses is the liquid medicine in cathode compartment.
Further, liquid medicine in aforesaid dope storage cylinder is added to described acidity etching liquid recycling by described chemical feed pipe and produces in line, its feed postition for standard, produces the hydrochloric acid of line and the concentration of iron for supplementing described acidity etching liquid recycling with conductance measurement number.
The utility model compared with prior art, beneficial effect is: the use electroreduction regeneration chlorine absorption unit that the utility model embodiment provides, be connected by described cathode compartment is circulated with described chlorine absorption cylinder, described chlorine absorption cylinder is connected with described dope storage cylinder, the ejector for chlorine and iron protochloride reaction is provided with in described chlorine absorption cylinder, treat that in described chlorine absorption cylinder, concentration of hydrochloric acid rises to a certain degree, transferred the possession of to described dope storage cylinder for subsequent use, and when described acidity etching liquid recycling produces required supplementary hydrochloric acid in line, first the liquid medicine in described dope storage cylinder is added by controling parameters, thus make described acidity etching liquid recycling produce the chlorine of line to be absorbed completely and process and be converted into hydrochloric acid, while reducing the usage quantity of iron, also avoid the chlorine produced in electrolytic process discharge and endanger environment.
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of the use electroreduction regeneration chlorine absorption unit that the utility model embodiment provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Refer to shown in Fig. 1, the chlorine that the use electroreduction regeneration chlorine absorption unit that the utility model provides produces in electrolytic process for the acidic etching waste liquid absorbing printed circuit board (PCB).Described use electroreduction regeneration chlorine absorption unit comprises cationic membrane electrolyzer 1, chlorine absorption cylinder 2 and dope storage cylinder 3.Described cationic membrane electrolyzer 1 is connected with described chlorine absorption cylinder 2, described chlorine absorption cylinder 2 is connected with described dope storage cylinder 3, described chlorine absorption cylinder 2 produces line (non-label) by tracheae (non-label) with etching solution recycling and is connected, and described dope storage cylinder 3 produces line by chemical feed pipe (non-label) with described etching solution recycling and is connected.
Described cationic membrane electrolyzer 1 comprises anolyte compartment 10, cathode compartment 11 and is connected to the cationic membrane 12 separated between described anolyte compartment 10 and described cathode compartment 11 and by described anolyte compartment 10 and described cathode compartment 11.Described cathode compartment 11 circulates with described chlorine absorption cylinder 2 and is connected.Be provided with positive plate 100 in described anolyte compartment 10, be provided with negative plate 110 in described cathode compartment 11, described positive plate 100 and described negative plate 110 are electrically connected with the positive pole of direct supply and negative pole respectively.The electrode materials that described positive plate 100 uses is graphite, the plating of lead alloy, titanium iridium oxide, tantalum oxide, ruthenium oxide coatings etc., and the solution of described anolyte compartment 10 is dilution heat of sulfuric acid, and sulfuric acid content is 100-250g/L; Described negative plate 110 generally adopts titanium or titanium alloy material to make its electrode, and the solution of described cathode compartment 110 is ferric chloride Solution, and wherein iron ion content is 20-80g/L.Liquid medicine in described cathode compartment 11 supplements the etching solution into reducing in the described acidity etching liquid recycling product line after cupric ion.Circulate with the liquid medicine complementation in described cathode compartment 11 in described anolyte compartment 10.Under the effect of electric current, reaction is as follows: negative electrode: 2FeCl
3+ H
2==2FeCl
2+ 2HCl; Anode: 2H
2o==2H
2+ O
2.Ejector (not shown) described chlorine absorption cylinder 2 is equipped with, connect by the inlet pipe of ejector the induced exhaust (not shown) that described etching solution recycling produces line, the liquid medicine used in described ejector is the liquid medicine in described cathode compartment 11.The chlorine that described etching solution recycling produces line is extracted in described ejector by described ejector by described chlorine absorption cylinder 2, and react with the solution of ferrous chloride of jet in described ejector and generate iron trichloride chlorine can not be emerged contaminate environment in air, its reaction is as follows: 2FeCl
2+ Cl
2==2FeCl
3.
Liquid medicine in described dope storage cylinder 3 is added to described acidity etching liquid recycling by described chemical feed pipe and produces in line, its feed postition with conductance measurement number for standard (namely acidity etching liquid recycling produces the concentration of hydrochloric acid in line) produces the hydrochloric acid of line and the concentration of iron for supplementing described acidity etching liquid recycling.
When described use electroreduction regeneration chlorine absorption unit absorbs the chlorine that acidic etching liquid produces, first be that solution in the anolyte compartment 10 of described cationic membrane electrolyzer issues biochemical reaction in the effect of electric current, the reaction formula in described anolyte compartment 10 is: 2H
2o==2H
2+ O
2.The oxidized gas H produced in described anolyte compartment 10
2enter in described cathode compartment 11, and with the ferric chloride Solution generation chemical reaction in described cathode compartment 11, the reaction formula in described cathode compartment 11 is: 2FeCl
3+ H
2==2FeCl
2+ 2HCl.The hydrochloric acid generated in described cathode compartment 11 enters in described chlorine absorption cylinder 2, and in continuous electrolytic reduction working cycle, concentration of hydrochloric acid in described cathode compartment 11 can constantly raise, therefore when concentration of hydrochloric acid is increased to more than 6mol/L, enter 2/3 of whole circulation fluid volume in described dope storage cylinder 3, and described acidity etching liquid recycling is produced the low copper of line or adds to described cathode compartment 11 without cupric ion liquid medicine, because described acid etching cyclic regeneration produces the iron ion also containing 20-50g/L in the liquid medicine of line, but its concentration of hydrochloric acid is low, described like this cathode compartment 11 can continue to circulate with described chlorine absorption cylinder 2.The chlorine that described acid etching cyclic regeneration produces line is extracted in described ejector by the described ejector in described chlorine absorption cylinder 2, and reacts with the solution of ferrous chloride of jet in it and generate iron trichloride, and chlorine can not be emerged contaminate environment in air.Its reaction formula is: 2FeCl
2+ Cl
2==2FeCl
3.And when needing supplementary hydrochloric acid in described acid etching cyclic regeneration product line, liquid medicine in described dope storage cylinder 3 is added (namely acidity etching liquid recycling produces the concentration of hydrochloric acid in line) by controling parameters and produces the hydrochloric acid of line and the concentration of iron to supplement described acidity etching liquid recycling, the chlorine making described acid etching cyclic regeneration produce line obtains process and is converted into hydrochloric acid, thus reduces the usage quantity of iron.
The use electroreduction regeneration chlorine absorption unit that the utility model embodiment provides, be connected by described cathode compartment is circulated with described chlorine absorption cylinder, described chlorine absorption cylinder is connected with described dope storage cylinder, the ejector for chlorine and iron protochloride reaction is provided with in described chlorine absorption cylinder, treat that in described chlorine absorption cylinder, concentration of hydrochloric acid rises to a certain degree, transferred the possession of to described dope storage cylinder for subsequent use, and when described acidity etching liquid recycling produces required supplementary hydrochloric acid in line, first the liquid medicine in described dope storage cylinder is added by controling parameters, thus make described acidity etching liquid recycling produce the chlorine of line to be absorbed completely and process and be converted into hydrochloric acid, while reducing the use of iron, also avoid the chlorine produced in electrolytic process discharge and endanger environment.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. one kind uses electroreduction regeneration chlorine absorption unit, the chlorine that the acidic etching waste liquid absorbing printed circuit board (PCB) produces in electrolytic process, it comprises cationic membrane electrolyzer, chlorine absorption cylinder and dope storage cylinder, described chlorine absorption cylinder is connected with described dope storage cylinder, described chlorine absorption cylinder produces line by tracheae and etching solution recycling and is connected, described dope storage cylinder produces line by chemical feed pipe and described etching solution recycling and is connected, the ejector for chlorine and iron protochloride reaction is provided with in described chlorine absorption cylinder, described cationic membrane electrolyzer comprises anolyte compartment, cathode compartment and be connected to the cationic membrane separated between described anolyte compartment and described cathode compartment and by described anolyte compartment and described cathode compartment, described cathode compartment circulates with described chlorine absorption cylinder and is connected.
2. the electroreduction that uses as claimed in claim 1 regenerates chlorine absorption unit, it is characterized in that, be provided with positive plate in described anolyte compartment, be provided with negative plate in described cathode compartment, described positive plate and described negative plate are electrically connected with the positive pole of direct supply and negative pole respectively.
3. the electroreduction that uses as claimed in claim 2 regenerates chlorine absorption unit, it is characterized in that, described positive plate adopts the materials such as the plating of graphite, lead alloy, titanium iridium oxide, tantalum oxide, ruthenium oxide coatings to make, and the solution of described anolyte compartment is dilution heat of sulfuric acid, and sulfuric acid content is 100-250g/L; Described negative plate adopts titanium or titanium alloy material to make, and the solution of described cathode compartment is ferric chloride Solution, and wherein iron ion content is 20-80g/L.
4. the electroreduction that uses as claimed in claim 3 regenerates chlorine absorption unit, it is characterized in that, the inlet pipe of described ejector connects the induced exhaust that described etching solution recycling produces line, and the liquid medicine that described ejector uses is the liquid medicine in cathode compartment.
5. the electroreduction that uses as claimed in claim 4 regenerates chlorine absorption unit, it is characterized in that, liquid medicine in described dope storage cylinder is added to described acidity etching liquid recycling by described chemical feed pipe and produces in line, its feed postition for standard, produces the hydrochloric acid of line and the concentration of iron for supplementing described acidity etching liquid recycling with conductance measurement number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520546184.1U CN204779822U (en) | 2015-07-24 | 2015-07-24 | Use electroreduction regeneration chlorine absorbing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520546184.1U CN204779822U (en) | 2015-07-24 | 2015-07-24 | Use electroreduction regeneration chlorine absorbing device |
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|---|---|
| CN204779822U true CN204779822U (en) | 2015-11-18 |
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ID=54519912
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112458463A (en) * | 2020-11-09 | 2021-03-09 | 江苏净拓环保科技有限公司 | Acid etching solution recycling system and method |
-
2015
- 2015-07-24 CN CN201520546184.1U patent/CN204779822U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112458463A (en) * | 2020-11-09 | 2021-03-09 | 江苏净拓环保科技有限公司 | Acid etching solution recycling system and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Use electroreduction regeneration chlorine absorbing device Effective date of registration: 20170728 Granted publication date: 20151118 Pledgee: Bank of Beijing Limited by Share Ltd Shenzhen branch Pledgor: ShenZhen JeCh Technology Co., Ltd. Registration number: 2017990000696 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220614 Granted publication date: 20151118 Pledgee: Bank of Beijing Limited by Share Ltd. Shenzhen branch Pledgor: SHENZHEN JECH TECHNOLOGY Co.,Ltd. Registration number: 2017990000696 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right |