CN105177693A - Pickling bath acid mist recovery system - Google Patents
Pickling bath acid mist recovery system Download PDFInfo
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- CN105177693A CN105177693A CN201510668939.XA CN201510668939A CN105177693A CN 105177693 A CN105177693 A CN 105177693A CN 201510668939 A CN201510668939 A CN 201510668939A CN 105177693 A CN105177693 A CN 105177693A
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- acid mist
- mist recovery
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- recovery system
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Abstract
The invention relates to a pickling bath acid mist recovery system which comprises a pickling bath, a fan, an acid mist recovery tower, a recovery tank and a neutralizing tank. A gas collecting outlet is formed in the portion, 10-15 cm below a tank opening, of the side face of the pickling bath. The acid mist recovery tower is provided with a filtering layer. The pickling bath, the fan, the acid mist recovery tower and the recovery tank form a recovery and utilization circulating system through a gas collecting pipeline, a recovery pipeline, a return pipeline and a recycling pipeline. According to the pickling bath acid mist recovery system, an airhood is formed above the liquid level, waste gas is collected completely, and no acid mist is leaked. The acid mist is completely discharged after being purified through special filtration and neutralization, recovery is complete, no pollution is caused to the environment, and a non-pollution green pickling process free of waste gas exhaust is created. During the process, acid liquor evaporation is reduced, the treating efficiency is high, a solution containing acid is recycled, and the operation cost is reduced. The problem of pollution of pickling waste gas to the environment in the electroplating industry is solved fundamentally.
Description
Technical field
The invention belongs to plating waste gas pollution control and treatment technical field, particularly relate to a kind of descaling bath acid mist recovery system.
Background technology
Plating (Electroplating) is exactly the process utilizing electrolysis principle to plate other metal or alloy of skim on the surface of metal or other material, the surface attachment layer of metal film of metal or other material can be made by plating, thus play and prevent burning (as corrosion), improve the effects such as wear resistance, electroconductibility, reflective, erosion resistance and having improved aesthetic appearance.Therefore, electroplating technology widespread use in machinery, five metals and electrical equipment etc. process of producing product.Plating is the indispensable industry of the national economic development, and plating pollution on the environment problem can not be ignored, and the plating disposal of three wastes is extremely urgent.
Plating is carried out in plating tank, it is different and different that the composition of the electroplate liquid in plating tank looks coating, but all containing the main salt providing metal ion, in the main salt of energy complexing, metal ion forms the complexing agent of complex compound, for the buffer reagent of stabilizing solution potential of hydrogen, anode activation agent and special additive (as brightening agent, grain-refining agent, leveling agent, wetting agent, stress relieving agent and inhibiting fog agent etc.).Electroplating process be the metal ion in plating solution under the effect of external electric field, be reduced into atoms metal through electrode reaction, and in the process of negative electrode enterprising row metal deposition.Therefore, this is a metal electrodeposition process comprising the steps such as mass transfer in liquid phase, electrochemical reaction and electrocrystallization.
Electroplating process carries out at a certain temperature, and plating tank can produce waste gas.Equally, in acid cleaning process, pickling tank can produce acid mist, if acid mist of leaving is discharged, both affects workshop condition, and affects operator's labor safety and healthy, also can pollute air, against environmental requirement.The improvement of current electroplating industry to acid mist there is no good measure, usually only above plating tank, arranges gas sampling cover, is then sent to recovery tower and reclaims and the rear discharge of process further.Tradition gas collecting mode is divided into two large classes by cover implication stream flow pattern, i.e. air suction type gas skirt and Blowing and sucking gas trap hood, gap is had with cell body top in this kind of gas skirt use procedure, acid mist can spill from gap, treating processes efficiency is low, cost is high, and the pollution problem of acid mist to workshop condition and air can not get basic solution.
Summary of the invention
The present invention is directed to above-mentioned the deficiencies in the prior art, propose a kind of descaling bath acid mist recovery system, fundamentally solve electroplating industry pickling waste gas to the pollution problem of environment, solution evaporation in groove is reduced in technological process, processing efficiency is high, recycle acid-containing solution, reduces running cost.
The technical scheme that technical solution problem of the present invention is taked is, a kind of descaling bath acid mist recovery system, comprises pickling tank, blower fan, acid mist recovery tower, accumulator tank and the interior neutralizing well having 10%NaOH solution; Under described pickling tank notch, side, 10 ~ 15cm place is provided with gas collection outlet, and be provided with filtering layer in the middle part of described acid mist recovery tower, described neutralizing well is provided with top vent and bottom leakage fluid dram; Described pickling tank, blower fan, acid mist recovery tower and accumulator tank, consist of the recycle system reclaiming, utilize collecting pipe, recovery channel, feedback pipeline and reuse pipeline.
As preferably, the described recycle system comprises: gas collection outlet in described pickling tank side is communicated with acid mist recovery tower bottom through collecting pipe and arranges blower fan on described collecting pipe, bottom described acid mist recovery tower, liquid outlet is communicated with accumulator tank through recovery channel, described accumulator tank is communicated with acid mist recovery tower top through feedback pipeline, and described accumulator tank is through reuse pipeline communication pickling tank.
Described filtering layer comprises filter screen and filtrate.
Bottom described neutralizing well, leakage fluid dram is communicated to combined sewage groove through Drainage pipe.
State in neutralizing well and be provided with pH meter.
Described pickling tank is provided with liquidometer.
Described feedback pipeline is provided with pump; Described reuse pipeline is also provided with pump.
The present invention side, 10 ~ 15cm place under pickling tank notch is provided with gas collection outlet, airhood is formed at ullage, waste gas is directly exported by gas collection and enter acid mist recovery tower bottom under the effect of collecting pipe at blower fan, in acid mist recovery tower, waste gas is by middle part filtering layer, be purified after filtration, be delivered to neutralizing well from the air outlet of top of tower through gas pipe line; The acid mist carried secretly in waste gas is reclaimed, and enters accumulator tank from the bottom liquid outlet of tower through recovery channel; Waste gas further neutralizing well in 10%NaOH solution and purification and discharged by venting port, the waste liquid of neutralizing well is sent to combined sewage groove through Drainage pipe.Reclaim acid-containing solution through reuse pipeline by pump delivery to pickling tank reuse, or through feedback pipeline conveying acid mist recovery tower top be used for spray.Accumulator tank is connected with pure water plenum system, regulates liquid measure to supply water, and for acid mist recovery tower provides spray liquid, and carries out fluid infusion for pickling tank.Filtering layer in acid mist recovery tower, filter screen adopts the filter screen be made up of polymer fiber material usually, and filtrate adopts biofilter material usually, as ball of wandering about as a refugee, speed point biochemistry ball etc.
The technical characterstic that the present invention gives prominence to and effect are, under pickling tank notch, side, 10 ~ 15cm place is provided with gas collection outlet, forms airhood at ullage, and gas sampling is complete, releases without acid mist; By special filtration neutralization, emptying after purification, reclaim completely, environmentally safe; The recycle system constitute purification by collecting pipe, recovery channel, feedback pipeline and reuse pipeline, recycling, creates the pollution-free green acid cleaning process of non-exhaust emission.In technological process, reduce acid solution evaporation, processing efficiency is high, recycle acid-containing solution, reduces running cost; Fundamentally solve electroplating industry pickling waste gas to the pollution problem of environment.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment schematic diagram of the present invention.
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Embodiment
Embodiment 1: a kind of descaling bath acid mist recovery system.
As shown in Figure 1, system comprises pickling tank 1, blower fan 2, acid mist recovery tower 3, accumulator tank 4 and interiorly has 10%H
2sO
4the neutralizing well 5 of solution; Under pickling tank 1 notch, side, 12cm place is provided with gas collection outlet; Be provided with filtering layer in the middle part of acid mist recovery tower 3, top is provided with air outlet, and bottom is provided with liquid outlet.The gas collection outlet of pickling tank 1 side is connected with acid mist recovery tower 3 bottom through collecting pipe, and collecting pipe is provided with blower fan 2; Air outlet, acid mist recovery tower 3 top is connected with neutralizing well 5 through gas pipe line, and bottom acid mist recovery tower 3, liquid outlet is connected with accumulator tank 4 through recovery channel, and accumulator tank 4 is connected with acid mist recovery tower 3 top through feedback pipeline, and feedback pipeline is provided with pump 8; Accumulator tank 4 is connected with pickling tank 1 through reuse pipeline, and reuse pipeline is also provided with pump 8.Neutralizing well 5 top is provided with venting port, and bottom is provided with leakage fluid dram, is provided with pH meter 6 in neutralizing well 5, and bottom neutralizing well 5, leakage fluid dram is communicated to combined sewage groove through Drainage pipe.Pickling tank 1 is provided with liquidometer 7.Filtering layer is made up of filter screen and filtrate, and filter screen is at lower floor's filtrate on upper strata, and filter screen is polypropylene fibre strainer, and filtrate is ball of wandering about as a refugee.
Embodiment 2: another kind of descaling bath acid mist recovery system.
Under pickling tank notch, side, 15cm place is provided with gas collection outlet.All the other are identical with embodiment 1.
Embodiment 3: another descaling bath acid mist recovery system.
Under pickling tank notch, side, 10cm place is provided with gas collection outlet.All the other are identical with embodiment 1.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (8)
1. a descaling bath acid mist recovery system, comprises pickling tank, blower fan, acid mist recovery tower and accumulator tank, it is characterized in that, have the neutralizing well of 10%NaOH solution in also comprising; Under described pickling tank notch, side, 10 ~ 15cm place is provided with gas collection outlet, and be provided with filtering layer in the middle part of described acid mist recovery tower, described neutralizing well is provided with top vent and bottom leakage fluid dram; Described pickling tank, blower fan, acid mist recovery tower and accumulator tank, consist of the recycle system reclaiming, utilize collecting pipe, recovery channel, feedback pipeline and reuse pipeline.
2. descaling bath acid mist recovery system according to claim 1, it is characterized in that, the described recycle system comprises: gas collection outlet in described pickling tank side is communicated with acid mist recovery tower bottom through collecting pipe and arranges blower fan on described collecting pipe, bottom described acid mist recovery tower, liquid outlet is communicated with accumulator tank through recovery channel, described accumulator tank is communicated with acid mist recovery tower top through feedback pipeline, and described accumulator tank is through reuse pipeline communication pickling tank.
3. descaling bath acid mist recovery system according to claim 1, is characterized in that, described filtering layer comprises filter screen and filtrate.
4. descaling bath acid mist recovery system according to claim 1, is characterized in that, bottom described neutralizing well, leakage fluid dram is communicated to combined sewage groove through Drainage pipe.
5. descaling bath acid mist recovery system according to claim 1, is characterized in that, is provided with pH meter in described neutralizing well.
6. descaling bath acid mist recovery system according to claim 1, is characterized in that, described pickling tank is provided with liquidometer.
7. descaling bath acid mist recovery system according to claim 1 and 2, is characterized in that, described feedback pipeline is provided with pump.
8. descaling bath acid mist recovery system according to claim 1 and 2, is characterized in that, described reuse pipeline is provided with pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510668939.XA CN105177693A (en) | 2015-10-13 | 2015-10-13 | Pickling bath acid mist recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510668939.XA CN105177693A (en) | 2015-10-13 | 2015-10-13 | Pickling bath acid mist recovery system |
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| Publication Number | Publication Date |
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| CN105177693A true CN105177693A (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510668939.XA Pending CN105177693A (en) | 2015-10-13 | 2015-10-13 | Pickling bath acid mist recovery system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521532A (en) * | 2016-11-28 | 2017-03-22 | 重庆万斯金属特种成形有限公司 | Closed type acid pickling device |
| CN106799101A (en) * | 2017-02-20 | 2017-06-06 | 李培芹 | Inhale acid mist environmental protecting device in a kind of pickling tube air curtain side |
| CN107475759A (en) * | 2017-08-23 | 2017-12-15 | 江苏国电新能源装备有限公司 | A kind of zincincation of acid suppression mist |
Citations (5)
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| AT407756B (en) * | 1999-03-22 | 2001-06-25 | Andritz Patentverwaltung | METHOD FOR RECOVERY OF ACIDS FROM METAL SOLUTIONS OF THESE ACIDS, PREFERABLY HC1 AND FE COMPOUNDS |
| CN101791486A (en) * | 2009-12-21 | 2010-08-04 | 江阴利鑫环保科技有限公司 | Method for purifying acid mist from pickling process |
| CN102586849A (en) * | 2012-03-16 | 2012-07-18 | 王树萱 | Chromium plating production equipment without discharge of electroplating waste liquid, waste gas and waste residues (three wastes) |
| CN103422126A (en) * | 2013-08-13 | 2013-12-04 | 四川省尼科国润新材料有限公司 | Acid mist recycling system device |
| CN104109898A (en) * | 2014-07-08 | 2014-10-22 | 德清县浙北通讯器材有限公司 | Waste gas treatment device of pickling or electroplating equipment |
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2015
- 2015-10-13 CN CN201510668939.XA patent/CN105177693A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT407756B (en) * | 1999-03-22 | 2001-06-25 | Andritz Patentverwaltung | METHOD FOR RECOVERY OF ACIDS FROM METAL SOLUTIONS OF THESE ACIDS, PREFERABLY HC1 AND FE COMPOUNDS |
| CN101791486A (en) * | 2009-12-21 | 2010-08-04 | 江阴利鑫环保科技有限公司 | Method for purifying acid mist from pickling process |
| CN102586849A (en) * | 2012-03-16 | 2012-07-18 | 王树萱 | Chromium plating production equipment without discharge of electroplating waste liquid, waste gas and waste residues (three wastes) |
| CN103422126A (en) * | 2013-08-13 | 2013-12-04 | 四川省尼科国润新材料有限公司 | Acid mist recycling system device |
| CN104109898A (en) * | 2014-07-08 | 2014-10-22 | 德清县浙北通讯器材有限公司 | Waste gas treatment device of pickling or electroplating equipment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106521532A (en) * | 2016-11-28 | 2017-03-22 | 重庆万斯金属特种成形有限公司 | Closed type acid pickling device |
| CN106799101A (en) * | 2017-02-20 | 2017-06-06 | 李培芹 | Inhale acid mist environmental protecting device in a kind of pickling tube air curtain side |
| CN107475759A (en) * | 2017-08-23 | 2017-12-15 | 江苏国电新能源装备有限公司 | A kind of zincincation of acid suppression mist |
| CN107475759B (en) * | 2017-08-23 | 2019-05-03 | 江苏国电新能源装备有限公司 | A kind of zincincation of acid suppression mist |
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