CN110438506A - The regenerative preparation of decoating liquid - Google Patents
The regenerative preparation of decoating liquid Download PDFInfo
- Publication number
- CN110438506A CN110438506A CN201910611633.9A CN201910611633A CN110438506A CN 110438506 A CN110438506 A CN 110438506A CN 201910611633 A CN201910611633 A CN 201910611633A CN 110438506 A CN110438506 A CN 110438506A
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- CN
- China
- Prior art keywords
- waste liquid
- strip
- strip waste
- liquid
- decoating
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/21—Manganese oxides
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
- C23F1/46—Regeneration of etching compositions
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
Abstract
A kind of regenerative preparation of decoating liquid, comprising the following steps: strip waste liquid is provided, contains Manganate ions in the strip waste liquid；And the electrolysis strip waste liquid, so that the Manganate ions is converted into high manganese ion, obtains the decoating liquid.The regenerative preparation of decoating liquid provided by the embodiment of the present invention carries out regeneration treatment, it can be achieved that PVD strip waste liquid on-line regeneration recycles to strip waste liquid by electrochemical oxidation process, has the advantages that strip Zero discharge and reduces strip reagent cost；By being electrolysed the strip waste liquid, chemicals is endangered without additionally adding height, technical process is safe and environmentally protective；The regenerative preparation also has many advantages, such as that easy to operate, regeneration efficiency is high and return period is short simultaneously.
Description
Technical field
The present invention relates to field of waste liquid treatment more particularly to a kind of regenerative preparations of decoating liquid.
Background technique
Currently, the regeneration of stainless steel physical vapour deposition (PVD) (Physical Vapor Deposition, PVD) strip waste liquid
Chemical oxidization method is mainly used, process flow is main are as follows: acid is first added and carries out disproportionated reaction, then carries out at concentration and separation
Reason finally carries out formula adjustment processing.But the process flow has the following problems: it is secondary that a large amount of precipitating is generated when (1) producing
Product needs individually to handle；(2) additional addition height is needed to endanger chemicals, operational hazards；(3) equipment flowsheet complex process, no
Conducive to mass production.
Summary of the invention
In view of this, it is necessary to provide do not generate by-product, strip easy to operate, equipment flowsheet simple process when production
The regenerative preparation of liquid.
A kind of regenerative preparation of decoating liquid, comprising the following steps:
Strip waste liquid is provided, contains Manganate ions in the strip waste liquid；And
It is electrolysed the strip waste liquid, the Manganate ions is made to be converted into high manganese ion, obtains the decoating liquid.
Further, being electrolysed voltage used by the strip waste liquid is 2.0V-3.5V.
Further, being electrolysed current density used by the strip waste liquid is 0.5A/dm2-2.5A/dm2。
Further, the strip waste liquid is electrolysed to carry out under conditions of temperature is 60 DEG C -80 DEG C.
Further, being electrolysed anode used by the strip waste liquid includes active metal.
Further, the active metal includes at least one of nickel and stainless steel.
It further, further include being filtered to the strip waste liquid before being electrolysed the strip waste liquid described in removal
Sediment in strip waste liquid.
Further, the filtering includes coarse filtration step and smart filtration step.
It further, further include being preheated to the strip waste liquid before being electrolysed the strip waste liquid.
The regenerative preparation of decoating liquid provided by the embodiment of the present invention by electrochemical oxidation process to strip waste liquid into
Row regeneration treatment has strip Zero discharge and reduces strip medicament, it can be achieved that PVD strip waste liquid on-line regeneration recycles
The advantages of cost；By being electrolysed the strip waste liquid, chemicals is endangered without additionally adding height, technical process is safe and green
Colour circle is protected；The regenerative preparation also has many advantages, such as that easy to operate, regeneration efficiency is high and return period is short simultaneously.
Detailed description of the invention
Fig. 1 is a kind of regenerative preparation flow chart of decoating liquid provided in an embodiment of the present invention.
Fig. 2 is the schematic illustration that redox reaction occurs when the embodiment of the present invention is electrolysed the decoating liquid.
The present invention that the following detailed description will be further explained with reference to the above drawings.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real
Applying mode, the present invention will be described in detail.It should be noted that in the absence of conflict, presently filed embodiment and reality
The feature applied in mode can be combined with each other.Many details are explained in the following description in order to fully understand this hair
Bright, described embodiment is only some embodiments of the invention, rather than whole embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Mode shall fall within the protection scope of the present invention.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein "and/or" includes one or more
All and arbitrary combinations of relevant listed item.
Referring to Fig. 1, being the regenerative preparation flow chart of decoating liquid provided in an embodiment of the present invention, including following step
It is rapid:
Step S1: strip waste liquid is provided, contains Manganate ions (MnO in the strip waste liquid4 2-)；
Step S2: it is electrolysed the strip waste liquid, the Manganate ions is made to be converted into high manganese ion (MnO4 -), it obtains
The decoating liquid.
In step sl, the strip waste liquid is that strip occurs by strip object with one by strip medicament to react and generate, institute
The effective component for stating strip medicament is MnO4 -, but in strip reaction process, MnO4 -Can be thermally decomposed and with by strip object
Metal reaction and gradually use up, so as to cause the failure of strip medicament, reaction principle is as follows:
It is thermally decomposed: MnO4 -+OH-→MnO4 2-+1/2O2↑；
It is reacted with metal Cr: Cr+3MnO4 -+4OH-→3MnO4 2-+Cr(OH)4 -。
Therefore by MnO4 2-It is oxidized to MnO4 -, so that the decoating liquid be made to come into force again.
In step s 2, by applying voltage to the strip waste liquid, make the MnO in the strip waste liquid4 2-It is reduced into
MnO4 -, to regenerate the decoating liquid.
Specifically, referring to Fig. 2, the reaction principle of regeneration decoating liquid are as follows:
Cathode reaction: 2H2O+2e→H2+2OH-, Eθ=-0.828V；
Anode main reaction: MnO4 2--e→MnO4 -, Eθ=-0.564V；
Due to Eθ(MnO4 -/MnO4 2-)<Eθ(O2/OH-), MnO can occur for anode4 2-Generate MnO4 -Electrochemical reaction；
Further, side reaction, the reaction principle of side reaction also occur for anode are as follows:
Anode side reaction: 2OH--2e→H2O+1/2O2, Eθ=-0.401V.
Therefore, anode electrode proposes high oxygen separated overpotential using active metal material, such as nickel, stainless steel plate etc., reduces sun
The generation of oxygen side reaction is analysed in pole, to improve MnO4 2-Transformation efficiency.
The voltage for being electrolysed the strip waste liquid is 2.0V-3.5V, current density 0.5A/dm2-2.5A/dm2.The electric current
The size of density is to the size of the voltage in relation to directly proportional, i.e., under the same conditions, the voltage of application is bigger, and the electric current is close
It spends bigger；The voltage of application is smaller, and the current density is smaller.
Further, the voltage is excessive, then increases energy consumption, improves production cost, at the same can reduce cathode electrode and
The service life of anode electrode；The voltage is too small, then cell reaction speed is slow, is unfavorable for practical industry production.
Electrolysis temperature is 60 DEG C -80 DEG C.Wherein, the electrolysis temperature is too low, then cell reaction speed is slow；The electrolysis temperature
Height is spent, then can accelerate MnO4 -Decomposition rate, make the MnO4 -Resolve into MnO4 2-And it fails.
Further, the regenerative preparation of the decoating liquid further includes filtration step.
Specifically, before being electrolysed the strip waste liquid, the strip waste liquid is filtered, to remove in the strip waste liquid
Sediment.In one embodiment, the filtration step includes coarse filtration step and smart filtration step, that is, first passes through slightly mistake
The sediment of larger particles in strip waste liquid described in step is filtered, is then filtered out in the strip waste liquid by essence filtration step again
The sediment of smaller particle, by being filtered for multiple times, largely to remove the sediment.
It further include preheating step after by filtration step, temperature needed for making the strip waste liquid reach electrolysis.
Therefore, in one embodiment, the strip waste liquid regenerative preparation specifically includes the following steps:
Step S10: the strip waste liquid generated after strip medicament strip by a storage tank automatic sucking, the strip are useless
Contain Manganate ions (MnO in liquid4 2-) and sediment；
Step S20: the strip waste liquid being placed in purification tank and successively carries out coarse filtration processing and smart filtration step, with
Remove the sediment and short grained sediment of the bulky grain in strip waste liquid；
Step S30: the strip waste liquid for removing sediment is preheated；
Step S40: the strip waste liquid after preheating is placed in regeneration tank, is electrolysed the strip waste liquid, and what is obtained described moves back
Plating solution；
Step S50: the decoating liquid is placed in and is re-used as decoating liquid in the storage tank and is recycled online.
Table 1 is please referred to, table 1 is not using the regenerative preparation (comparative example) of the decoating liquid and to use the decoating liquid
Comparison of the regenerative preparation (embodiment) to the quality and expense of required strip medicament.
The quality and expense of strip medicament needed for 1 comparative example of table and embodiment
| The quality (Kg) of required strip medicament | The expense (member) of strip medicament | |
| Comparative example | 22237 | 378039 |
| Embodiment | 12000 | 204000 |
As it can be seen from table 1 the quality that can reduce strip medicament is 10237Kg by regenerative preparation, strip is reduced
The expense of medicament is 174039 yuan, i.e. the cost of strip medicament reduces 46%；It is prepared simultaneously by using the regeneration of decoating liquid
Meet zero-emission during method, further reduces costs.
The regenerative preparation of decoating liquid provided by the embodiment of the present invention by electrochemical oxidation process to strip waste liquid into
Row regeneration treatment has strip Zero discharge and reduces strip medicament, it can be achieved that PVD strip waste liquid on-line regeneration recycles
The advantages of cost；By being electrolysed the strip waste liquid, chemicals is endangered without additionally adding height, technical process is safe and green
Colour circle is protected；The regenerative preparation also has many advantages, such as that easy to operate, regeneration efficiency is high and return period is short simultaneously.
Embodiment of above is only used to illustrate the technical scheme of the present invention and not to limit it, although referring to the above preferable embodiment party
Formula describes the invention in detail, those skilled in the art should understand that, it can be to technical solution of the present invention
It modifies or equivalent replacement should not all be detached from the spirit and scope of technical solution of the present invention.
Claims (9)
1. a kind of regenerative preparation of decoating liquid, comprising the following steps:
Strip waste liquid is provided, contains Manganate ions in the strip waste liquid；And
It is electrolysed the strip waste liquid, the Manganate ions is made to be converted into high manganese ion, obtains the decoating liquid.
2. the regenerative preparation of decoating liquid according to claim 1, being electrolysed voltage used by the strip waste liquid is
2.0V-3.5V。
3. it is close to be electrolysed electric current used by the strip waste liquid for the regenerative preparation of decoating liquid according to claim 1
Degree is 0.5A/dm2-2.5A/dm2。
4. the regenerative preparation of decoating liquid according to claim 1, being electrolysed the strip waste liquid in temperature is 60 DEG C -80
It is carried out under conditions of DEG C.
5. the regenerative preparation of decoating liquid according to claim 1 is electrolysed anode packet used by the strip waste liquid
Include active metal.
6. the regenerative preparation of decoating liquid according to claim 5, the active metal includes in nickel and stainless steel
At least one.
7. the regenerative preparation of decoating liquid according to claim 1 further includes pair before being electrolysed the strip waste liquid
The strip waste liquid is filtered to remove the sediment in the strip waste liquid.
8. the regenerative preparation of decoating liquid according to claim 7, the filtering includes coarse filtration step and smart mistake
Filter step.
9. the regenerative preparation of decoating liquid according to claim 1 further includes pair before being electrolysed the strip waste liquid
The strip waste liquid is preheated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910611633.9A CN110438506A (en) | 2019-07-08 | 2019-07-08 | The regenerative preparation of decoating liquid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910611633.9A CN110438506A (en) | 2019-07-08 | 2019-07-08 | The regenerative preparation of decoating liquid |
Publications (1)
| Publication Number | Publication Date |
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| CN110438506A true CN110438506A (en) | 2019-11-12 |
Family
ID=68429850
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910611633.9A Withdrawn CN110438506A (en) | 2019-07-08 | 2019-07-08 | The regenerative preparation of decoating liquid |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112323136A (en) * | 2020-10-26 | 2021-02-05 | 深圳市裕展精密科技有限公司 | Deplating solution and deplating method |
| US20220411953A1 (en) * | 2019-11-21 | 2022-12-29 | Coventya S.P.A. | An Electrolytic Treatment Device for Preparing Plastic Parts to be Metallized and a Method for Etching Plastic Parts |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0291445A2 (en) * | 1987-05-11 | 1988-11-17 | ATOTECH Deutschland GmbH | Process and apparatus for regenerating permanganate etch solutions |
| WO1989006639A1 (en) * | 1988-01-19 | 1989-07-27 | Circuit Chemistry Corporation | Alkaline permanganate etchant regeneration process and apparatus |
| KR900001826B1 (en) * | 1985-05-31 | 1990-03-24 | 모르톤 티오콜, 인코오포레이티드 | Method of regenerating permanganate etch bath |
| EP0396252A1 (en) * | 1989-05-05 | 1990-11-07 | Macdermid Incorporated | Electrolytic regeneration of alkaline permanganate etching bath |
| JPH06306668A (en) * | 1993-04-16 | 1994-11-01 | Ebara Densan:Kk | Regeneration method from manganate to permanganate and its regeneration device |
| CN1429282A (en) * | 2000-05-19 | 2003-07-09 | 埃托特克德国有限公司 | Cathode for electrochemical regeneration of permanganate etching solutions |
| CN1498291A (en) * | 2002-02-06 | 2004-05-19 | 新光电气工业株式会社 | Electrolytic recycling device |
| CN103764871A (en) * | 2011-08-26 | 2014-04-30 | 安美特德国有限公司 | Method for treating of plastic substrates and a device for an at least partial regeneration of a treatment solution |
-
2019
- 2019-07-08 CN CN201910611633.9A patent/CN110438506A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR900001826B1 (en) * | 1985-05-31 | 1990-03-24 | 모르톤 티오콜, 인코오포레이티드 | Method of regenerating permanganate etch bath |
| EP0291445A2 (en) * | 1987-05-11 | 1988-11-17 | ATOTECH Deutschland GmbH | Process and apparatus for regenerating permanganate etch solutions |
| WO1989006639A1 (en) * | 1988-01-19 | 1989-07-27 | Circuit Chemistry Corporation | Alkaline permanganate etchant regeneration process and apparatus |
| EP0396252A1 (en) * | 1989-05-05 | 1990-11-07 | Macdermid Incorporated | Electrolytic regeneration of alkaline permanganate etching bath |
| JPH06306668A (en) * | 1993-04-16 | 1994-11-01 | Ebara Densan:Kk | Regeneration method from manganate to permanganate and its regeneration device |
| CN1429282A (en) * | 2000-05-19 | 2003-07-09 | 埃托特克德国有限公司 | Cathode for electrochemical regeneration of permanganate etching solutions |
| CN1498291A (en) * | 2002-02-06 | 2004-05-19 | 新光电气工业株式会社 | Electrolytic recycling device |
| CN103764871A (en) * | 2011-08-26 | 2014-04-30 | 安美特德国有限公司 | Method for treating of plastic substrates and a device for an at least partial regeneration of a treatment solution |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220411953A1 (en) * | 2019-11-21 | 2022-12-29 | Coventya S.P.A. | An Electrolytic Treatment Device for Preparing Plastic Parts to be Metallized and a Method for Etching Plastic Parts |
| US11603595B2 (en) * | 2019-11-21 | 2023-03-14 | Coventya S.P.A. | Electrolytic treatment device for preparing plastic parts to be metallized and a method for etching plastic parts |
| CN112323136A (en) * | 2020-10-26 | 2021-02-05 | 深圳市裕展精密科技有限公司 | Deplating solution and deplating method |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20191112 |
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