CN201952492U - Device for electrolyzing copper by cyclic regeneration of printed circuit board etching solution - Google Patents
Device for electrolyzing copper by cyclic regeneration of printed circuit board etching solution Download PDFInfo
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- CN201952492U CN201952492U CN2011200483865U CN201120048386U CN201952492U CN 201952492 U CN201952492 U CN 201952492U CN 2011200483865 U CN2011200483865 U CN 2011200483865U CN 201120048386 U CN201120048386 U CN 201120048386U CN 201952492 U CN201952492 U CN 201952492U
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims abstract description 53
- 239000010949 copper Substances 0.000 title claims abstract description 49
- 229910052802 copper Inorganic materials 0.000 title claims abstract description 46
- 238000005530 etching Methods 0.000 title claims abstract description 42
- 230000008929 regeneration Effects 0.000 title claims description 12
- 238000011069 regeneration method Methods 0.000 title claims description 12
- 125000004122 cyclic group Chemical group 0.000 title claims 8
- 239000000243 solution Substances 0.000 claims description 32
- 239000008151 electrolyte solution Substances 0.000 claims description 5
- 239000002699 waste material Substances 0.000 claims description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims 3
- 239000004571 lime Substances 0.000 claims 3
- 230000000295 complement effect Effects 0.000 claims 1
- 238000005070 sampling Methods 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 29
- 238000004064 recycling Methods 0.000 abstract description 12
- 239000007788 liquid Substances 0.000 abstract description 11
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract description 10
- 238000000605 extraction Methods 0.000 abstract description 8
- 238000003912 environmental pollution Methods 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 12
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 8
- 229910001431 copper ion Inorganic materials 0.000 description 8
- 239000012528 membrane Substances 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002912 waste gas Substances 0.000 description 4
- 238000005868 electrolysis reaction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- -1 chlorine ions Chemical class 0.000 description 1
- 229910000365 copper sulfate Inorganic materials 0.000 description 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000866 electrolytic etching Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- 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)
- Manufacturing Of Printed Circuit Boards (AREA)
Abstract
本实用新型印制电路板蚀刻液循环再生电解铜装置，主要由电解槽、以及分别与电解槽连接的循环槽、整流器构成。循环槽为电解槽提供富含铜的电解液，整流器为电解槽提供电流，富含铜的电解液由萃取剂将失效印制电路板蚀刻液的铜萃取出，然后用硫酸将萃取剂中铜反萃取出而得到。萃取后的蚀刻液通过组分调整，回用到印制电路板蚀刻机继续使用，形成循环再生系统。应用该电解铜装置，不但将失效蚀刻液得到资源利用，取得经济效益，而且还避免了环境污染。
The utility model relates to a printed circuit board etching liquid recycling electrolytic copper device, which is mainly composed of an electrolytic tank, a circulation tank connected to the electrolytic tank, and a rectifier. The circulation tank provides the electrolytic cell with copper-rich electrolyte, and the rectifier provides current for the electrolytic cell. The copper-rich electrolyte is extracted by the extractant from the copper of the invalid printed circuit board etching solution, and then the copper in the extractant is extracted by sulfuric acid. obtained by back extraction. The extracted etchant is adjusted in composition and recycled to the printed circuit board etching machine for continued use, forming a recycling system. The application of the electrolytic copper device not only utilizes the invalid etching solution as resources, obtains economic benefits, but also avoids environmental pollution.
Description
技术领域technical field
本实用新型涉及一种电解装置，即印制电路板蚀刻液循环再生电解铜装置。The utility model relates to an electrolysis device, namely a printed circuit board etching solution circulation regeneration electrolytic copper device.
背景技术Background technique
在印刷电路板（PCB）生产过程中产生大量的失效蚀刻液，该液中含有铜(铜含量约为120～140g/L)、氨及氯化铵。对于这种失效蚀刻液，传统的处理方法是线路板生产企业作为废液交给回收公司，回收公司以其为原料生产硫酸铜产品，但其中大量含铵液体得不到有效的利用，造成环境污染和资源浪费，对于线路板生产企业没有什么效益。线路板生产企业通过技术改造，将生产过程中产生大量的失效蚀刻液变成再生资源重复循环使用，实现高质量，低污染，高效益的发展，以求达到节省资源、减少污染、增加企业效益的目的。目前，国内、外一些企业的线路板生产系统采用萃取回收技术处理失效的蚀刻液，在失效的蚀刻液中加入吸铜萃取剂，萃取其中的铜，萃取后蚀刻液加添加剂再生后，达到使用要求后，返回蚀刻槽循环使用，节省了购买蚀刻液的成本，反萃取出的富铜液到电解槽进行电解，铜离子被还原成为有价值的高纯度金属铜，卖铜的收益是相当可观的，又避免了环境污染。In the production process of printed circuit board (PCB), a large amount of invalid etching solution is produced, which contains copper (copper content is about 120-140g/L), ammonia and ammonium chloride. For this kind of invalid etching solution, the traditional treatment method is that the circuit board manufacturer sends it to the recycling company as a waste solution, and the recycling company uses it as a raw material to produce copper sulfate products, but a large amount of ammonium-containing liquid cannot be effectively used, causing environmental pollution. Pollution and waste of resources are of no benefit to circuit board manufacturers. Through technical transformation, circuit board production enterprises turn a large amount of invalid etching solution produced in the production process into renewable resources for repeated use, to achieve high-quality, low-pollution, and high-efficiency development, in order to save resources, reduce pollution, and increase corporate benefits the goal of. At present, the circuit board production systems of some domestic and foreign companies use extraction and recovery technology to process the invalid etching solution, add copper-absorbing extractant to the invalid etching solution, and extract the copper in it. After request, return to the etching tank for recycling, saving the cost of purchasing the etching solution. The copper-rich solution extracted from the back extraction is electrolyzed in the electrolytic tank, and the copper ions are reduced to valuable high-purity metal copper. The profit of selling copper is considerable , and avoid environmental pollution.
现今存在一种膜分离技术再生蚀刻液及无排放废液的电解蚀刻机，由蚀刻机和电解再生机两部分密封箱体构成；蚀刻机箱体下部有分别储放新鲜和用过的两种蚀刻液储槽，上部为蚀刻液的喷淋和印制板传送支撑机构；电解再生机上部用选择透过性离子膜分隔成正负极相间的阴极室和阳极室；阳极室里蚀刻液中的过量一价铜在此氧化成二价铜，再通过离子膜进入阴极室后，从阴极板上得到电子成为电解铜而被回收，同时，阳极室里的蚀刻液达到标准比例再生而循环使用。但是，采用膜分离技术存在离子膜和阴极板的问题，造成电解液氯离子与其他组分发生化学反应，产生有毒有害的氯气，还给蚀刻液再生带来困难，同时温度上升，有效成分氨很易挥发，造成环境污染。Nowadays, there is an electrolytic etching machine that uses membrane separation technology to regenerate etching liquid and discharge waste liquid. It is composed of two parts of the sealed box: the etching machine and the electrolytic regeneration machine; the lower part of the etching machine box stores fresh and used etching materials respectively. Liquid storage tank, the upper part is the spraying of etching solution and the supporting mechanism of printed board transmission; the upper part of the electrolytic regenerator is divided into a cathode chamber and an anode chamber with positive and negative electrodes separated by a selective permeable ion membrane; the etching solution in the anode chamber Excess monovalent copper is oxidized to divalent copper here, and then enters the cathode chamber through the ionic membrane, and the electrons obtained from the cathode plate become electrolytic copper and are recycled. However, the use of membrane separation technology has problems with the ion membrane and the cathode plate, causing the chlorine ions in the electrolyte to react chemically with other components to produce toxic and harmful chlorine gas, which also brings difficulties to the regeneration of the etching solution. At the same time, the temperature rises and the active ingredient ammonia Very volatile, causing environmental pollution.
实用新型内容Utility model content
本实用新型目的在于提供一种印制电路板蚀刻液循环再生电解铜装置，可以使失效蚀刻液中的铜得以回收，实现经济效益，避免环境污染。The purpose of the utility model is to provide a printed circuit board etching solution recycling electrolytic copper device, which can recycle the copper in the invalid etching solution, realize economic benefits and avoid environmental pollution.
本实用新型的目的通过下述技术方案实现：印制电路板蚀刻液循环再生电解铜装置，主要由电解槽、以及分别与电解槽连接的循环槽、整流器构成。循环槽为电解槽提供富含铜的电解液，整流器为电解槽提供电流，富含铜的电解液由萃取剂将失效印制电路板蚀刻液的铜萃取出，然后用硫酸将萃取剂中铜反萃取出而得到。萃取后的蚀刻液通过组分调整，回用到印制电路板蚀刻机继续使用，形成循环再生系统。The purpose of this utility model is achieved through the following technical solutions: the electrolytic copper recycling device for printed circuit board etching solution is mainly composed of an electrolytic tank, a circulation tank connected to the electrolytic tank, and a rectifier. The circulation tank provides the electrolytic cell with copper-rich electrolyte, and the rectifier provides current for the electrolytic cell. The copper-rich electrolyte is extracted by the extractant from the copper of the invalid printed circuit board etching solution, and then the copper in the extractant is extracted by sulfuric acid. obtained by back extraction. The extracted etchant is adjusted in composition and recycled to the printed circuit board etching machine for continued use, forming a recycling system.
所述电解槽通过设置在电解槽外壁的电解液回流槽、以及电解液输送管与循环槽相连接。The electrolytic cell is connected to the circulation cell through an electrolyte return tank and an electrolyte delivery pipe arranged on the outer wall of the electrolytic cell.
所述电解液输送管连接有若干支管，所述支管设置有与其相匹配的阀门。The electrolyte delivery pipe is connected with several branch pipes, and the branch pipes are provided with matching valves.
所述循环槽内设置有循环泵，所述循环泵还与电解液输送管连接。循环泵将富含铜电解液通过电解液输送管均匀分配到电解槽中，阀门控制流量大小。A circulation pump is arranged in the circulation tank, and the circulation pump is also connected with the electrolyte delivery pipe. The circulation pump evenly distributes the copper-rich electrolyte into the electrolytic cell through the electrolyte delivery pipe, and the valve controls the flow rate.
所述电解槽内设置有阳极板和阴极覆铜板，所述阳极板和阴极覆铜板分别与整流器的阳极和阴极相连接。在电流作用下，电解液中的铜离子被还原到阴极覆铜板上，通过反应阴极覆铜板上铜不断累积，电解液中铜离子减少，通过电解液回流槽回到循环槽中，电解液从出液管由泵抽入到萃取系统使用。An anode plate and a cathode copper-clad plate are arranged in the electrolytic cell, and the anode plate and the cathode copper-clad plate are respectively connected with the anode and the cathode of the rectifier. Under the action of the current, the copper ions in the electrolyte are reduced to the cathode copper clad plate, and the copper on the cathode copper clad plate is continuously accumulated through the reaction, the copper ions in the electrolyte are reduced, and the electrolyte returns to the circulation tank through the electrolyte return tank, and the electrolyte from The outlet pipe is pumped into the extraction system for use.
所述电解槽的槽口设置有集气罩，所述集气罩安装有废气收集管。 循环槽还设置有检修口、以及进液管，所述循环槽的槽口设置有集气罩，所述集气罩安装有废气管、所述循环槽侧壁设置有出液管。废气通过收集后由废气吸收塔处理，避免环境污染。The notch of the electrolytic cell is provided with a gas collecting hood, and the gas collecting hood is equipped with a waste gas collecting pipe. The circulation tank is also provided with an inspection port and a liquid inlet pipe. The notch of the circulation tank is provided with a gas collection cover, and the gas collection cover is equipped with a waste gas pipe, and the side wall of the circulation tank is provided with a liquid outlet pipe. The exhaust gas is collected and processed by the exhaust gas absorption tower to avoid environmental pollution.
本实用新型印制电路板蚀刻液循环再生电解铜装置的有益之处，不但将失效蚀刻液得到资源利用，取得经济效益，而且还避免了环境污染。The utility model has the advantages of the device for recycling and regenerating the electrolytic copper of the printed circuit board etching solution, which not only utilizes the invalid etching solution as resources, obtains economic benefits, but also avoids environmental pollution.
附图说明Description of drawings
图1为印制电路板蚀刻液循环再生电解铜装置结构示意图。Fig. 1 is a schematic structural diagram of an electrolytic copper recycling device for printed circuit board etching solution.
图2为图1的侧视图。FIG. 2 is a side view of FIG. 1 .
图中标号分别表示为：1—循环槽、101—循环泵、102—检修口、103—废气管、104—出液管、105—进液管、106—电解液输送管、2—电解槽、201—阳极板、202—阴极覆铜板、203—阀门、204—电解液回流槽、205—集气罩、206—废气收集管、3—整流器、301—阳极、302—阴极。The labels in the figure are respectively indicated as: 1—circulation tank, 101—circulation pump, 102—inspection port, 103—exhaust gas pipe, 104—liquid outlet pipe, 105—liquid inlet pipe, 106—electrolyte solution delivery pipe, 2—electrolytic tank , 201—anode plate, 202—cathode copper clad laminate, 203—valve, 204—electrolyte return tank, 205—gathering hood, 206—exhaust gas collection pipe, 3—rectifier, 301—anode, 302—cathode.
具体实施方式Detailed ways
下面结合附图和实施例对本实用新型印制电路板蚀刻液循环再生电解铜装置进一步说明。The following is a further description of the device for recycling electrolytic copper of the printed circuit board etching solution of the present invention in conjunction with the accompanying drawings and embodiments.
实施例一，如图1、2所示，电解铜装置由循环槽1、电解槽2、整流器3组成，循环槽1为电解槽2提供富含铜的电解液，整流器3为电解槽2提供电流。印制电路板蚀刻液循环再生系统工作时，用萃取剂将失效印制电路板蚀刻液的铜萃取出，然后用硫酸将萃取剂中铜反萃取出而得到富含铜的电解液，铜离子浓度在20~40g/L之间，萃取后的蚀刻液通过组分调整，添加部分蚀刻所需的添加剂，回用到印制电路板蚀刻机继续使用，形成循环再生系统。Embodiment 1, as shown in Figures 1 and 2, the electrolytic copper device is composed of a circulation tank 1, an
循环槽1设置循环泵101，电解液输送管106连接有若干支管，所述支管设置有与其相匹配的阀门203。循环泵101将富含铜电解液通过电解液输送管106均匀分配到电解槽2中，阀门203控制流量大小。The circulation tank 1 is provided with a circulation pump 101, and the electrolyte delivery pipe 106 is connected with several branch pipes, and the branch pipes are provided with
电解槽2安装有阳极板201和阴极覆铜板202，阳极板201与整流器3阳极301连接，阴极覆铜板202与整流器3阴极302连接。在电流作用下，电解液中的铜离子被还原到阴极覆铜板202上，通过反应阴极覆铜板202上铜不断累积，电解液中铜离子减少，铜离子浓度小于20 g/L，通过电解液回流槽204回到循环槽1中，电解液从出液管104由泵抽入到萃取系统使用。The
电解铜装置运行参数：当电解槽中的含铜量达到30g/L时，依次放入阳极板201和阴极覆铜板202，然后开启整流器3，电流由小到大慢慢旋动，根据铜离子量，调整整流器3的电流大小，电解槽内电解液的控制参数如表1所示。Operating parameters of the electrolytic copper device: When the copper content in the electrolytic cell reaches 30g/L, put the anode plate 201 and the cathode
表1 电解槽内电解液的控制参数表Table 1 Control parameters of the electrolyte in the electrolytic cell
当Cu2+＜20 g/L不可停止电解，应低电流电解（电流=500A），正常运行情况下控制电解液中的含铜量在Cu2+=30 g/L左右，电解液储缸硫酸在180~210g/L，不足时添加硫酸，当Cu2+＞45 g/L时需停止蚀刻液萃取。When Cu 2+ < 20 g/L, the electrolysis cannot be stopped, and low current electrolysis (current = 500A) should be used. Under normal operation, the copper content in the electrolyte should be controlled at about Cu 2+ =30 g/L, and the electrolyte storage tank Sulfuric acid is 180~210g/L, add sulfuric acid when it is insufficient, and stop etching solution extraction when Cu 2+ >45 g/L.
电解槽2的槽口设置有集气罩205，集气罩205安装有废气收集管206。The notch of the
循环槽1还设置有检修口102、以及进液管105，所述循环槽1的槽口设置有集气罩205，集气罩205安装有废气管103，循环槽1侧壁设置有出液管104。The circulation tank 1 is also provided with an inspection port 102 and a liquid inlet pipe 105. The notch of the circulation tank 1 is provided with a
如上所述便可较好实现本实用新型，但本实用新型的实施方式不限于此。As described above, the present invention can be better realized, but the embodiments of the present invention are not limited thereto.
Claims (7)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104630825A (en) * | 2015-01-20 | 2015-05-20 | 昆山美源达环保科技有限公司 | Device and process for electrolytically extracting copper in acidic etching liquid |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104630825A (en) * | 2015-01-20 | 2015-05-20 | 昆山美源达环保科技有限公司 | Device and process for electrolytically extracting copper in acidic etching liquid |
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Assignee: SHANGHAI PUDONG HUANGGONG PRINTING CO., LTD. Assignor: Zheng Chuanyong Contract record no.: 2013320010159 Denomination of utility model: Device for electrolyzing copper by cyclic regeneration of printed circuit board etching solution Granted publication date: 20110831 License type: Exclusive License Record date: 20130927 |
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