CN104805492B - Electrodeposited chromium waste gas cleaning system and method - Google Patents
Electrodeposited chromium waste gas cleaning system and method Download PDFInfo
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- CN104805492B CN104805492B CN201510213123.8A CN201510213123A CN104805492B CN 104805492 B CN104805492 B CN 104805492B CN 201510213123 A CN201510213123 A CN 201510213123A CN 104805492 B CN104805492 B CN 104805492B
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- foam metal
- waste gas
- chromic acid
- condensing cover
- condenser pipe
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Abstract
A kind of electrodeposited chromium waste gas cleaning system and method, category electroplating technology field.The system includes passing through coupling flange（7）It is installed on electroplating unit（1）Top and the condensing cover for forming airtight passage（4）；Condensing cover（4）In multilayer foam metal is installed（8）And condenser pipe（9）；Wherein multilayer foam metal is more than the aperture diameter on upper strata according to pore size successively storied placement, the wherein aperture diameter of lower floor；Condenser pipe（9）It is arranged in foam metal（8）In；The system also includes being connected to condensing cover（4）The gas gathering system of upper end.The chromic acid for the volatilization that effectively can be produced using the present invention during Recovery Purifying electrodeposited chromium, makes discharge after the purification of the chromic acid waste gas containing plating.
Description
Technical field
The present invention relates to a kind of new electrodeposited chromium waste gas cleaning system and method, category electroplating technology field.
Background technology
Chromium plating is one of most widely used plating in electroplating industry.Chrome plating can assign metal material excellent corrosion resistant
Erosion, abrasion resistance properties and relatively low coefficient of friction.Feature chromium plating can more make material surface obtain bright, hard, fastness
With the good characteristics such as wear-corrosion resistance, therefore, electrodeposited chromium has been widely used as a process of surface treatment technology
In industries such as the protection of hardware, electromechanics, automobile and Aero-Space critical mechanical component surface.
For a long time, chrome-plated process is all the hexavalent chromium plating technique for using chromic acid for chromium source.Because bath temperature will add during chromium plating
Temperature, while because electric current is very big in chrome-plating process, a large amount of hydrogen and chromium mist are produced at negative electrode.Therefore operation is highly impacted
Workman is healthy and pollutes surrounding environment.Taking out of for chromium mist and make chromic acid amount loss up to 30% or so.Therefore, how to prevent
Chromic acid waste gas pollution air turns into the problem of current urgent need to resolve.
To administer the waste gas of chromium plating, the country carries out and much attempted.（1）The use of fluorine-containing inhibitor.By fluorine-containing suppression mist
Agent is added in chromic acid bath, when plating, is produced a large amount of hydrogen and oxygen by anode and cathode reaction and plating solution surface is produced bubble
Foam coating, so as to suppress the spilling of chromium mist.But, it is a kind of noxious material that fluorine-containing inhibitor is thought in the world, it is necessary to limited
System is used, and currently studies substitute.（2）Chromium mist is suppressed using baton round.Using the hollow vinyon of diameter 5 to 20
Ball, one layer or two layers of the alternate bedding of size can play a part of pressing down mist in chromium plating liquid surface.But this method is only limitted to exhaust system
In the case that air quantity is small, and there is following defect：（a）Due to electrode movement（Negative electrode revolution, translation etc.）Cause flow of the electrolyte,
So that baton round produces irregular movement；（b）The addition of baton round in the friction auxiliary electroforming chromium added with ceramic particle
The supporting process that normally rubs can be influenceed；（c）Swum in when plating solution needs circulation fliud flushing or plating solution frequently to change on plating solution
Baton round turns into a kind of " burden ".The present invention is based on cooled chromic acid waste gas Physical Absorption cleaning principle, invents a kind of plating
Chromium waste gas cleaning system, solves the problem that above method faces, and versatility is extremely strong.Wide, simple in construction, the volume with applicability
Small, maintenance management is convenient, and the advantages of organic efficiency is high, practicality almost covers all plating chromium process, and intact has circulation
The electroplating technology chromic acid waste gas processing of the features such as fliud flushing, electrode movement, friction auxiliary plating.
The content of the invention
It is an object of the invention to be directed to electroplating technology chromic acid waste gas pollution problem, it is proposed that one kind can reduce chromic acid pair
The electrodeposited chromium waste gas cleaning system and method for atmosphere pollution.
The system includes the condensing cover of airtight passage is installed on above electroplating unit and formed by coupling flange；Condensing cover
In multilayer foam metal and condenser pipe are installed；Wherein multilayer foam metal according to pore size successively storied placement, wherein under
The aperture diameter of layer is more than the aperture diameter on upper strata；Condenser pipe is arranged in foam metal；The system also includes being connected to condensation
Cover the gas gathering system of upper end.
According to the purification method of the electrodeposited chromium waste gas cleaning system, it is characterised in that including procedure below：With chromic acid
The waste gas of mist is brought into condensing cover in the presence of gas gathering system, during by multilayer foam metal, is disperseed and passes through many
Narrow bending channel, adds the chance for colliding with each other and becoming big, under absorption and Action of Gravity Field, and tiny chromic acid droplet absorption exists
Foam metal surface, and constantly cohesion becomes big, at the same the cooling effect of the condenser pipe in foam metal can accelerate it is this
Coacervation process, promotes the last electroplating unit that lands back of chromic acid drop.Air after purification is emptied through gas gathering system.
It is a feature of the present invention that：
（1）Using external plating mode, reservoir is separate with electroplating unit, and electroplate liquid is heated in reservoir, leads to
Reservoir is flowed back to after crossing circulating pump inflow electroplating unit, the circulatory system of opposing seal is formed.
（2）Foam metal in chromic acid condensing cover uses storied placement mode, each layer foam metal according to pore size from
Arranged successively on down.Chromium plating waste gas enters from macrovoid one end, from the discharge of small space one end, improves condensation efficiency；
（3）The easy condensing cover for not installing condenser pipe in foam metal can also be used, chromic acid waste gas are purified
Reclaim.
Brief description of the drawings
Fig. 1 is pulse plating flawless hard chrome process chromic acid waste gas cleaning system structural representation；
Fig. 2 is chromic acid condensing cover inner workings schematic diagram；
Label title：1st, electroplating unit, 2, reservoir, 3, plating fluid circulation, 4, chromic acid condensing cover, 5, electroplate liquid adds
Hot systems, 6, gas gathering system, 7, coupling flange, 8, foam metal, 9, condenser pipe, 10, casing, 11, porous foam titanium, 12, chromium
Sour waste gas, 13, the gas after reclaiming clean.
Embodiment
A kind of electrodeposited chromium waste gas cleaning system, as shown in figure 1, its system includes：Electroplating unit 1, reservoir 2, electroplate liquid
The circulatory system 3, chromic acid condensing cover 4, electroplate liquid heating system 5, gas gathering system 6, coupling flange 7, foam metal 8, condenser pipe 9,
The gas after gas 13, reclaiming clean after casing 10, porous foam titanium 11, chromic acid waste gas 12, reclaiming clean.It is characterized in institute
Chromic acid cleaning system is stated, cooling and purifying effect of the chromic acid waste gas through porous foam titanium 11, condenser pipe 9 is recovered into electroplating unit 1, its
Residual air body is discharged into air through gas gathering system.
The chromic acid condensing cover casing and coupling flange of use are made up of the polyethylene or polyvinyl chloride plastic of resistance to chromic acid corrosion, cold
Solidifying pipe is made of the titanium alloy of resistance to chromic acid corrosion, and foam metal uses porous foam titanium.
A kind of patent " electrodeposited chromium waste gas cleaning system and method " principle and process of the present invention：Using the cold of resistance to chromic acid corrosion
The key facility that solidifying pipe 9 and foam metal 8 are purified as chromic acid waste gas；The layering of foam metal 8 is formed by stacking；Condenser pipe 9 is arranged
In foam metal space, cooling water and persistent loop are passed through；Chromic acid waste gas are fully suctioned out using gas gathering system；During plating,
Periodic cleaning and the sealing for strengthening coupling flange.Because using the dust from air can be gathered after a period of time in chromic acid waste gas cover
With silt and dry chromic anhybride, resistance will be increased, or even resulted in blockage, therefore, should be periodically to chromic acid condensing cover with originally
Water is cleaned；Plating from start to end, keeps chromic acid condensing cover sealing good, and the cooling gas circulatory system persistently runs well,
After end to be electroplated, if electroplating unit temperature is down to room temperature, you can stop chromic acid waste gas cleaning system, so far, entirely electroplated
Journey realizes environment friendly and pollution-free type revolving body flawless pulse plating hard chrome process experiment.
Claims (2)
1. a kind of electrodeposited chromium waste gas cleaning system, it is characterised in that：
The system includes passing through coupling flange（7）It is installed on electroplating unit（1）Top and the condensing cover for forming airtight passage（4）；
Condensing cover（4）In multilayer foam metal is installed（8）And condenser pipe（9）；Wherein multilayer foam metal according to pore size successively
The aperture diameter of storied placement, wherein lower floor is more than the aperture diameter on upper strata；Condenser pipe（9）It is arranged in foam metal（8）In；
The system also includes being connected to condensing cover（4）The gas gathering system of upper end.
2. the purification method of electrodeposited chromium waste gas cleaning system according to claim 1, it is characterised in that including procedure below：
Waste gas with mist of chromic acid enters condensing cover in the presence of gas gathering system（4）；
When waste gas passes through multilayer foam metal, disperseed and by many narrow bending channels, added the change that collides with each other big
Chance, under absorption and Action of Gravity Field, on foam metal surface, and constantly, cohesion becomes big to the absorption of tiny chromic acid droplet, simultaneously
The cooling effect of condenser pipe in foam metal can accelerate this coacervation process, promote chromic acid drop finally to land telegram in reply
Plate unit；
Purified gas is emptied through gas gathering system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510213123.8A CN104805492B (en) | 2015-04-30 | 2015-04-30 | Electrodeposited chromium waste gas cleaning system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510213123.8A CN104805492B (en) | 2015-04-30 | 2015-04-30 | Electrodeposited chromium waste gas cleaning system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104805492A CN104805492A (en) | 2015-07-29 |
| CN104805492B true CN104805492B (en) | 2017-07-11 |
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| CN201510213123.8A Active CN104805492B (en) | 2015-04-30 | 2015-04-30 | Electrodeposited chromium waste gas cleaning system and method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105057273A (en) * | 2015-08-27 | 2015-11-18 | 苏州凯锝微电子有限公司 | Ultrasonic lens cleaning device |
| CN108014587A (en) * | 2017-11-06 | 2018-05-11 | 广州塞提斯环保科技有限公司 | A kind of industrial gas emission device |
| CN111733437A (en) * | 2020-07-01 | 2020-10-02 | 福建旭辰信息科技有限公司 | Closed air exhaust environment-friendly industrial component electrochemical treatment system |
| CN112504962B (en) * | 2020-12-04 | 2022-09-20 | 江苏源泉智能装备科技有限公司 | Portable electroplating workshop chromic acid fog automatic checkout device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1017643B (en) * | 1973-11-15 | 1977-08-10 | Ebara Udylite Kk | METHOD AND APPARATUS FOR TREATMENT AND SOLUTIONS FOR SURFACE TREATMENT OF METALS AND WASHING LIQUIDS |
| JPS5932602Y2 (en) * | 1981-01-13 | 1984-09-12 | トヨタ自動車株式会社 | plating device |
| US5104496A (en) * | 1990-10-18 | 1992-04-14 | Optical Radiation Corporation | Low mist chromium plating method and system |
| CN102151460A (en) * | 2011-02-28 | 2011-08-17 | 无锡宏联电镀设备有限公司 | Waste gas purifying device capable of recovering chromium fog |
| CN102586849B (en) * | 2012-03-16 | 2014-11-05 | 王树萱 | Chromium plating production equipment without discharge of electroplating waste liquid, waste gas and waste residues (three wastes) |
| CN204251751U (en) * | 2014-11-03 | 2015-04-08 | 大连迪施船机有限公司 | A kind of chromium mist tower spray equipment |
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