CN102872691B - Paint waste gas treatment process - Google Patents
Paint waste gas treatment process Download PDFInfo
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- CN102872691B CN102872691B CN201210358034.9A CN201210358034A CN102872691B CN 102872691 B CN102872691 B CN 102872691B CN 201210358034 A CN201210358034 A CN 201210358034A CN 102872691 B CN102872691 B CN 102872691B
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Abstract
The invention provides a paint waste gas treatment process with stable operating effect and low cost. The paint waste gas treatment process comprises the following steps of: (1) removing dust, namely collecting paint waste gas by using a pipeline, and filtering and removing dust by using an air filter; (2) performing circulating water cooling, namely cooling the waste gas subjected to dust removal through a channel provided with a water cooling pipeline; (3) performing plasma purification, namely allowing the waste gas to pass through a low temperature plasma purifier, and making the organic waste gas perform glow discharge through ultrahigh pressure pulse corona, so that the organic waste gas is converted into CO2 and H2O; and (4) exhausting by using induced air. The steps are carried out in a closed channel, and the waste gas enters through a collection pipeline and is exhausted through an exhaust stack under the action of an induced draft fan. The invention has the advantages that 1) the process is simple and quick, and the purifying rate is high; 2) multi-path equipment works simultaneously to match a multiple spray process in a mirror production line; 3) the equipment is convenient to use, is started and used at any time without preheating process, and the waste gas treatment is started as long as a spray chamber starts working; and 4) the operating cost is low, the operating state is stable, and the cost is low.
Description
Technical field
The present invention relates to a kind of paint waste gas treatment process that is applied to mirror production line processed.
Background technology
The spray paint waste gas of generation of process of mirror processed is mainly toluene, dimethylbenzene, NMHC, its chemical constituent complexity, and the raw material difference of product, and composition and concentration differ, the As-Is analysis data that can only administer by current industry.What wherein mainly need control is the contained ratio of toluene and dimethylbenzene.In addition, add and also can produce dust waste gas man-hour simultaneously in polishing table polishing.The VOCs treatment method generally adopting both at home and abroad at present mainly contains heat accumulating type catalytic combustion method, adsorption/desorption catalyzing method, and adsorption/desorption catalyzing method use cost is higher, and long-term operational effect is unstable, undulate, invest higher, complex management, have secondary pollution, belong to traditional handicraft; And the equipment investment used of heat accumulating type catalytic combustion method is higher, floor space is large, safeguards complicatedly, needs professional to manipulate, and limitation high-concentration waste gas is main, needs preheating, and heat loss is serious.
There is the technique purifying by plasma purifier in air off gas at present in processing, plasma organic waste gas purifier operation principle: use super-high pressure pulse corona technology, when there being face waste gas to enter in high voltage electric field module, high voltage electric field generator is under the impulse electric corona effect of operating voltage, there is strong glow discharge, in electricity piece template, spread all over strong purple light, organic matter in organic exhaust gas is under strong purple light effect, can be within the extremely short time (ns), waste gas moment is activated, free energy surges becomes anakmetomeres, these activation divided in the moment that frequent impact occurs, kinetic transformation is become to intramolecular potential energy, original chemical bond ruptures, generate new harmless single atomic gas, thereby reach purification object.After reaction, harmful HC compound is converted into nontoxic CO2 and H2O, but the paint exhaust-gas treatment of plasma purification applications in mirror technique processed also exists corresponding problem to need to solve, there is water smoke (waste gas that enters plasma purifier should avoid there is hydrone as far as possible) etc. as paint exhaust-gas treatment air quantity is large, EGT is high, in waste gas.
Summary of the invention
The present invention is directed to prior art and have above-mentioned defect, adopt plasma purification method, the paint waste gas treatment process that a kind of operational effect is stable, cost is low is provided.
The present invention is achieved through the following technical solutions:
Paint waste gas treatment process, comprise the following steps: (1) dedusting, paint waste gas collected by pipeline after through air cleaner dust removal by filtration; (2) recirculated water cooling, the waste gas after dedusting is by being furnished with the passage cooling of water cooled pipeline; (3) plasma purifies, and waste gas is by low-temperature plasma purifier, and by super-high pressure pulse corona, organic exhaust gas glow discharge, is converted into
with
; (4) air inducing is discharged; Above step is all carried out in closed channel, and waste gas enters and discharges from blowdown stack from collection conduit under air-introduced machine effect; By at least two pipeline equipments completing steps (1)～step (4) respectively, be wherein that the circulating water pool that step (2) supplies water shares, recirculated water flows back to circulating water pool through anti-corrosion centrifugal pump, cooling tower, water cooled pipeline successively from circulating water pool; Water cooled pipeline in air cleaner in step (1) and step (2) is all arranged in the spindle gas wash tower of vertical placement; Gas wash tower top connects the plasma purifier of laterally placing by closed conduct, the entrance and exit of plasma purifier arranges respectively the tubaeform connector to plasma purifier interior expansion, and the processing air quantity of plasma purifier is 60000～80000
; Air-introduced machine is arranged in the blowdown stack for completing steps (4).
Further, in described step (1), filtering element for air filter material is glass fibre and offset paper; Its initial resistance 230～240Pa, dust containing capacity is 500～1000g.
Further, in described step (2), waste gas initial temperature is 100～105 ° of C, and the temperature after recirculated water cooling is 55～60 ° of C.
Further, in described step (4), air-introduced machine air inducing amount is 50000～70000
, rated power is 37KW.
Further, in described step (4), the outlet of blowdown stack is highly overhead 15～18m.
Further, the nuisance in paint waste gas is 150～200 in the concentration of porch
.
Further, in circulating water pool, be provided with level alarm for water, priming device and deslagging device.
For easy to assembly and guarantee seal, the interconnective port of gas wash tower, plasma purifier and blowdown stack is provided with retractable and flexible Petrochemical Pipe Joints.
Compared with prior art, beneficial effect of the present invention is: 1) technique is simply rapid, and purifying rate is high; 2) multichannel equipment moves simultaneously, to coordinate the multi-coat lacquer technique in mirror production line processed; 3) equipment is easy to use, and start at any time, is used at any time, does not need warm, as long as start working in spray room, exhaust-gas treatment is enabled thereupon; 4) operating cost is low, and running status is stable, and cost is low.
Brief description of the drawings
Fig. 1 is the structural representation for the treatment of facility of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail:
With reference to Fig. 1, paint waste gas treatment process, it is characterized in that comprising the following steps: (1) dedusting, paint waste gas collected by pipeline after through air cleaner dust removal by filtration; (2) recirculated water cooling, the waste gas after dedusting is by being furnished with the passage cooling of water cooled pipeline; (3) plasma purifies, and waste gas is by low-temperature plasma purifier 2, and by super-high pressure pulse corona, organic exhaust gas glow discharge, is converted into
with
; (4) air inducing is discharged; Above step is all carried out in closed channel, and waste gas enters and discharges from blowdown stack 6 from collection conduit under air-introduced machine 3 effects.Relevant device only arranges opening in waste gas introducing place and discharge place.
In described step (1), filtering element for air filter material is glass fibre and offset paper; Its initial resistance 230～240Pa, dust containing capacity is 500～1000g, the material of above-mentioned filter core and parameter are chosen in mirror production line exhaust-gas treatment processed optimum, meet various operating mode needs, long service life, maintenance cost is low.
Waste gas initial temperature is 100～105 ° of C in described step (2), and the temperature after recirculated water cooling is 55～60 ° of C, enters plasma purifier after EGT is reduced within the scope of this and just can reach preferably clean-up effect.
In step in the present embodiment (4), air-introduced machine air inducing amount is 50000～70000
, rated power is 37KW.Adaptability is good, and clean-up effect and purification speed significantly improve.For meeting relevant emission standards, in described step (4), the outlet of blowdown stack 6 is highly overhead 15～18m.
Nuisance in paint waste gas is 150～200 in the concentration of porch
.Nuisance is mainly benzene, toluene and dimethylbenzene, accounts for the more than 95% of whole nuisances.
Shown in Fig. 1, for adapting to the multi-coat lacquer technique in mirror production line processed, the present invention adopts following further scheme: by least two pipeline equipments completing steps (1)～step (4) respectively, be wherein that the circulating water pool 4 that step (2) supplies water shares, recirculated water flows back to circulating water pool 4 through anti-corrosion centrifugal pump 5, cooling tower, water cooled pipeline successively from circulating water pool 4.To ensure the stable operation of water-cooled step.
In circulating water pool 4, be provided with level alarm for water, priming device and deslagging device.In Cooling Process, there is water evaporation, therefore water level lower than when setting value level alarm for water report to the police, by priming device, water level in circulating water pool is met the requirements, circulation is long-term also can form waste residue after using, so being set, deslagging device automatically removes waste residue, unobstructed to ensure water route.
In the present embodiment, the water cooled pipeline in the air cleaner in step (1) and step (2) is all arranged in the spindle gas wash tower 1 of vertical placement; Gas wash tower 1 top connects the plasma purifier 2 of laterally placing by closed conduct, the entrance and exit of plasma purifier 2 arranges respectively the tubaeform connector to plasma purifier interior expansion, and the processing air quantity of plasma purifier 2 is 60000～80000
; Air-introduced machine is arranged in the blowdown stack for completing steps (4).
For easy to assembly and guarantee seal, the interconnective port of gas wash tower 1, plasma purifier 2 and blowdown stack 6 is provided with retractable and flexible Petrochemical Pipe Joints.
Although the present invention illustrates and describes by reference to preferred embodiment,, those of ordinary skill in the art should understand, and can be not limited to the description of above-described embodiment, in the scope of claims, can do the various variations in form and details.
Claims (1)
- Paint waste gas treatment process, it is characterized in that comprising the following steps: (1) dedusting, paint waste gas collected by pipeline after through air cleaner dust removal by filtration; (2) recirculated water cooling, the waste gas after dedusting is by being furnished with the passage cooling of water cooled pipeline; (3) plasma purifies, and waste gas is by low-temperature plasma purifier, and by super-high pressure pulse corona, organic exhaust gas glow discharge, is converted into with ; (4) air inducing is discharged; Above step is all carried out in closed channel, and waste gas enters and discharges from blowdown stack from collection conduit under air-introduced machine effect; By at least two pipeline equipments completing steps (1)～step (4) respectively, be wherein that the circulating water pool that step (2) supplies water shares, recirculated water flows back to circulating water pool through anti-corrosion centrifugal pump, cooling tower, water cooled pipeline successively from circulating water pool; Water cooled pipeline in air cleaner in step (1) and step (2) is all arranged in the spindle gas wash tower of vertical placement; Gas wash tower top connects the plasma purifier of laterally placing by closed conduct, the entrance and exit of plasma purifier arranges respectively the tubaeform connector to plasma purifier interior expansion, and the processing air quantity of plasma purifier is 60000～80000 ; Air-introduced machine is arranged in the blowdown stack for completing steps (4).2. paint waste gas treatment process according to claim 1, is characterized in that: in described step (1), filtering element for air filter material is glass fibre and offset paper; Its initial resistance 230～240Pa, dust containing capacity is 500～1000g.3. paint waste gas treatment process according to claim 1, is characterized in that: in described step (2), waste gas initial temperature is 100～105 ° of C, and the temperature after recirculated water cooling is 55～60 ° of C.4. paint waste gas treatment process according to claim 1, is characterized in that: in described step (4), air-introduced machine air inducing amount is 50000～70000 , rated power is 37KW.5. paint waste gas treatment process according to claim 1, is characterized in that: in described step (4), the outlet of blowdown stack is highly overhead 15～18m.6. paint waste gas treatment process according to claim 1, is characterized in that: the nuisance in paint waste gas is 150～200 in the concentration of porch .7. paint waste gas treatment process according to claim 1, is characterized in that: in circulating water pool, be provided with level alarm for water, priming device and deslagging device.8. paint waste gas treatment process according to claim 1, is characterized in that: the interconnective port of gas wash tower, plasma purifier and blowdown stack is provided with retractable and flexible Petrochemical Pipe Joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210358034.9A CN102872691B (en) | 2012-09-24 | 2012-09-24 | Paint waste gas treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210358034.9A CN102872691B (en) | 2012-09-24 | 2012-09-24 | Paint waste gas treatment process |
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| Publication Number | Publication Date |
|---|---|
| CN102872691A CN102872691A (en) | 2013-01-16 |
| CN102872691B true CN102872691B (en) | 2014-09-17 |
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|---|---|---|---|
| CN201210358034.9A Active CN102872691B (en) | 2012-09-24 | 2012-09-24 | Paint waste gas treatment process |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103071376A (en) * | 2013-01-24 | 2013-05-01 | 江苏新阪神太阳能有限公司 | Waste gas treatment device |
| CN103736351A (en) * | 2014-01-13 | 2014-04-23 | 苏州克利亚环保科技有限公司 | Painting-waste-gas treating device |
| CN105983300A (en) * | 2015-01-31 | 2016-10-05 | 福建省首融环境科技有限公司 | Treatment process for paint exhaust gas |
| CN105233646A (en) * | 2015-11-18 | 2016-01-13 | 温州伟诚环保科技有限公司 | Organic waste gas treatment device |
| CN110270570A (en) * | 2018-03-14 | 2019-09-24 | 上海强精金属制品有限公司 | A kind of spraying waste gas recovery utilizes system |
| CN108325328A (en) * | 2018-04-25 | 2018-07-27 | 济南永新环境科技有限公司 | It is melt into the ultra-clean abatement equipment of fine exhaust gas integration and its application method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102327719A (en) * | 2011-07-23 | 2012-01-25 | 天津天任车料有限公司 | System and method for treating exhaust gas generated during varnish baking by using water for industrial cycle |
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2012
- 2012-09-24 CN CN201210358034.9A patent/CN102872691B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102327719A (en) * | 2011-07-23 | 2012-01-25 | 天津天任车料有限公司 | System and method for treating exhaust gas generated during varnish baking by using water for industrial cycle |
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| CN102872691A (en) | 2013-01-16 |
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