CN103736351A - Painting-waste-gas treating device - Google Patents

Painting-waste-gas treating device Download PDF

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Publication number
CN103736351A
CN103736351A CN201410012941.7A CN201410012941A CN103736351A CN 103736351 A CN103736351 A CN 103736351A CN 201410012941 A CN201410012941 A CN 201410012941A CN 103736351 A CN103736351 A CN 103736351A
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CN
China
Prior art keywords
waste gas
gas
demister
discharge low
corona discharge
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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.)
Pending
Application number
CN201410012941.7A
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Chinese (zh)
Inventor
蒋建平
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CLEAR ENVIRONMENT TECHNOLOGY SUZHOU Co Ltd
Original Assignee
CLEAR ENVIRONMENT TECHNOLOGY SUZHOU Co Ltd
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Application filed by CLEAR ENVIRONMENT TECHNOLOGY SUZHOU Co Ltd filed Critical CLEAR ENVIRONMENT TECHNOLOGY SUZHOU Co Ltd
Priority to CN201410012941.7A priority Critical patent/CN103736351A/en
Publication of CN103736351A publication Critical patent/CN103736351A/en
Pending legal-status Critical Current

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Abstract

The invention relates to a painting-waste-gas treating device for treating waste gas exhausted by a painting-waste-gas exhausting port. The painting-waste-gas treating device comprises a wet-type cyclone separator, a corona-discharge low-temperature plasma waste-gas purifying device and a water spraying tower which are connected with the painting-waste-gas exhausting port in sequence; a gas outlet of the wet-type cyclone separator is connected with a gas inlet of the corona-discharge low-temperature plasma waste-gas purifying device; a gas outlet of the corona-discharge low-temperature plasma waste-gas purifying device is connected with a gas inlet of the water spraying tower; the water spraying tower is provided with an exhausting port communicated with the atmosphere. The painting-waste-gas treating device is designed for purifying the painting waste gas and has the advantages that the pollution caused by organic pollutants such as methylbenzene and dimethylbenzene volatilizing into the air in the process of painting and drying is reduced at lower cost, so that the purpose of clean exhausting is achieved.

Description

A kind of lacquer spraying waste gas treating apparatus
Technical field
The present invention relates to waste gas purification processing technology field, relate in particular to a kind of lacquer spraying waste gas treating apparatus.
Background technology
Spraying paint is a kind of very common process of surface treatment, and in now widely used paint, the organic solvents such as benzene,toluene,xylene, NMHC occupy very large ratio.Spray paint and dry process in, these organic solvents can evaporate in air, form the pollution to air.Existing paint-spraying production line is all provided with air exhausting device at paint spray booth and baking room, and the organic matter volatilizing in paint is discharged.The emission-control equipment that at present only had a small amount of paint-spraying production line design and installation, in these emission-control equipments, majority is to adopt sorbing material to process organic pollution.The sorbing materials such as active carbon are to utilize the micro-pore of material surface that the molecule particle of pollutant is fixed, and in lacquer spraying waste gas, contain the dry coating cloud of significant proportion, these coating clouds are attached to sorbing material surface, after dry, the micropore of sorbing material can be blocked, stop sorbing material further to adsorb, because paint is dry rear firmly abnormal, sorbing material cannot be regenerated simultaneously, must change.Therefore adopt absorption method to process lacquer spraying waste gas and there is very large difficulty.Because the tolerance of lacquer spraying waste gas is huge, some efficient processing methods are as combustion method needs a large amount of heat energy, are that the producer of spraying paint often cannot bear.
Chinese patent (N202654901U) discloses a kind of absorbent charcoal adsorber of paint spray booth, with two-layer active carbon, adsorbs, and this mode gas does not pass through pre-filtering, and the utilization rate of active carbon is reduced, and replacement frequency increases, and cost is huge.Therefore need to develop the treating apparatus of a kind of anti-pollution, low operating cost.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the expensive technical problem of lacquer spraying waste gas treating apparatus in prior art, a kind of lacquer spraying waste gas treating apparatus is provided, under lower cost, reduce spray paint and dry process in the pollution that causes in evaporateing into air of the organic pollution such as toluene, dimethylbenzene.
The technical solution adopted for the present invention to solve the technical problems is: a kind of lacquer spraying waste gas treating apparatus, the waste gas of discharging for the treatment of lacquer spraying waste gas floss hole, described lacquer spraying waste gas treating apparatus comprises the wet cyclone being connected successively with lacquer spraying waste gas floss hole, corona discharge low temp cleaning plant for waste gas of plasma and spray washing tower, described wet cyclone gas outlet connects the air inlet of corona discharge low temp cleaning plant for waste gas of plasma, the gas outlet of described corona discharge low temp cleaning plant for waste gas of plasma connects the air inlet of described spray washing tower, described spray washing tower is provided with the exhaust outlet communicating with atmosphere.
Further, described Waste gas outlet is communicated with the air inlet that is positioned at the bottom of described wet cyclone by pipeline, and the bottom of wet cyclone has liquid and/or solid-state coating cloud is concentrated outlet.
Further, described lacquer spraying waste gas treating apparatus also comprises demister, described demister is located between wet cyclone and corona discharge low temp cleaning plant for waste gas of plasma, the gas outlet of described wet cyclone is connected with the air inlet of described demister, and the gas outlet of described demister is connected with the air inlet of corona discharge low temp cleaning plant for waste gas of plasma.
Further, described demister is baffle plate type demister, the air foam separator that described baffle plate type demister is comprised of several deflection plates, and described baffle plate type demister is two groups.
Further, described baffle plate type demister is made by stainless steel.
Further, described corona discharge low temp cleaning plant for waste gas of plasma comprises housing and is located at the corona discharge low temp plasma electrode in housing.
Further, in described housing, be provided with the cleaning device that can clean described corona discharge low temp plasma electrode.
Further, described spray washing tower has two groups of spray heads.
The invention has the beneficial effects as follows, lacquer spraying waste gas treating apparatus of the present invention is removed the liquid and/or solid-state coating cloud that has a strong impact on described lacquer spraying waste gas treating apparatus operation in waste gas by wet cyclone, can further remove mist by flowing board-like demister, then by corona discharge low temp cleaning plant for waste gas of plasma, remove the organic pollution in waste gas, by spray washing tower, remove the acidic oxide forming after organic pollution oxidation again, through the waste gas of processing, by exhaust outlet, emit.The present invention under lower cost, reduce spray paint and dry process in the pollution that causes in evaporateing into air of the organic pollution such as toluene, dimethylbenzene, reached the object of clean emission.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of one embodiment of the present invention.
In figure: 1, Waste gas outlet; 2, wet cyclone; 3, demister; 4, corona discharge low temp plasma electrode; 5, cleaning device; 6, discharge low-temperature cleaning plant for waste gas of plasma; 7, outlet; 8, spray washing tower; 9, spray head; 10, exhaust outlet.
The specific embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, basic structure of the present invention is only described in a schematic way, so it only show the formation relevant with the present invention.
As shown in Figure 1, described lacquer spraying waste gas treating apparatus of the present invention comprises wet cyclone 2, corona discharge low temp cleaning plant for waste gas of plasma 6 and the spray washing tower 8 being connected successively with lacquer spraying waste gas floss hole 1, described wet cyclone 2 gas outlets connect the air inlet of corona discharge low temp cleaning plant for waste gas of plasma 6, the gas outlet of described corona discharge low temp cleaning plant for waste gas of plasma 6 connects the air inlet of described spray washing tower 8, and described spray washing tower 8 is provided with the exhaust outlet 10 communicating with atmosphere.
The waste gas that enters described wet cyclone 2 through floss hole 1 is subject to revolving wind action and produces strong rotation, liquid and solid-state coating cloud is thrown toward the wall of wet cyclone 2 under the action of the centrifugal, under Action of Gravity Field, liquid and solid-state coating cloud falls through concentrating outlet 7 to discharge along wall.Gas after separation enters corona discharge low temp cleaning plant for waste gas of plasma 6 from the gas outlet of wet cyclone 2.
For the liquid state to larger in waste gas and solid-state coating cloud carry out pre-separation, to alleviate the load of wet cyclone 2, preferably, described Waste gas outlet 1 is communicated with the air inlet that is positioned at the bottom of described wet cyclone 2 by pipeline, and the bottom of wet cyclone 2 has liquid and/or solid-state coating cloud is concentrated outlet 7.Because from bottom air inlet, can make full use of the lower space of wet cyclone 2.
Entrainment in the gas of processing through wet cyclone 2, and these mist diameters are very little, described mist need to be removed, therefore, described lacquer spraying waste gas treating apparatus also comprises demister 3, described demister 3 is located between wet cyclone 2 and corona discharge low temp cleaning plant for waste gas of plasma 6, the gas outlet of described wet cyclone 2 is connected with the air inlet of described demister 3, and the gas outlet of described demister 3 is connected with the air inlet of corona discharge low temp cleaning plant for waste gas of plasma 6.
In order further to improve the efficiency of demist, described demister 3 is baffle plate type demister, the air foam separator that described baffle plate type demister is comprised of several deflection plates, and described baffle plate type demister is two groups.When the waste gas that contains mist is flowed through baffle plate type demister with certain speed, the bend that in baffle plate type demister, V-type deflection plate forms causes the sharply variation of fluid flow direction, make to have compared with the mist of large inertia and deflection plate and collide and be attached on deflection plate surface, mist is separated from mobile gas.And gas is unimpeded due to the runner spaciousness forming between deflection plate, thereby can smooth and easy passing through.Two groups of baffle plate type demisters have increased the chance that mist is captured, and the mist not being removed is captured through identical effect at next group baffle plate type demister, thereby has greatly improved demist efficiency.Gas, by after baffle plate type demister, does not basically contain mist.
In order to strengthen the corrosion resistance of described baffle plate type demister, preferentially, described baffle plate type demister is made by stainless steel.
Described corona discharge low temp cleaning plant for waste gas of plasma 6 comprises housing and is located at the corona discharge low temp plasma electrode 4 in housing.
Contaminated and cannot process waste gas due to corona discharge low temp plasma electrode 4 for fear of emission-control equipment, preferably, in described housing, be provided with the cleaning device 5 that can clean described corona discharge low temp plasma electrode 4.
In order to remove the acidic oxide forming after oxidation operation, preferably, described spray washing tower 8 comprises two groups of spray heads 9, described spray head 9 ejection alkaline waters, the waste gas of processing is washed, and after the acidic oxide forming after removal oxidation operation, gas is discharged from exhaust outlet 10.
The operation principle of lacquer spraying waste gas treating apparatus of the present invention is as follows: first by wet cyclone 2, the liquid state and the solid-state coating cloud that in waste gas, have a strong impact on treating apparatus operation are removed, liquid and solid-state coating cloud is through concentrating outlet 7 to discharge; Gas is further removed mist by the board-like demister 3 of stream again; Then utilize resistant to pollution corona discharge low temp plasma electrode 4 in discharge low-temperature cleaning plant for waste gas of plasma 6 that the organic pollution being dissolved in gas is decomposed to removal; Finally utilize the spray head 9 ejection alkaline waters in spray washing tower 8, the gas of processing is washed, after the acidic oxide forming after removal oxidation operation, gas is discharged through exhaust outlet 10, reaches the object of clean emission.
The above-mentioned foundation desirable embodiment of the present invention of take is enlightenment, and by above-mentioned description, relevant staff can, within not departing from the scope of this invention technological thought, carry out various change and modification completely.The technical scope of this invention is not limited to the content on description, must determine its technical scope according to claim scope.

Claims (8)

1. a lacquer spraying waste gas treating apparatus, the waste gas of discharging for the treatment of lacquer spraying waste gas floss hole (1), it is characterized in that, comprise the wet cyclone (2) connecting successively, corona discharge low temp cleaning plant for waste gas of plasma (6) and spray washing tower (8), described wet cyclone (2) gas outlet connects the air inlet of corona discharge low temp cleaning plant for waste gas of plasma (6), the gas outlet of described corona discharge low temp cleaning plant for waste gas of plasma (6) connects the air inlet of described spray washing tower (8), described spray washing tower (8) is provided with the exhaust outlet (10) communicating with atmosphere.
2. lacquer spraying waste gas treating apparatus as claimed in claim 1, it is characterized in that, described Waste gas outlet (1) is communicated with the air inlet that is positioned at the bottom of described wet cyclone (2) by pipeline, and the bottom of wet cyclone (2) has liquid and/or solid-state coating cloud is concentrated outlet (7).
3. lacquer spraying waste gas treating apparatus as claimed in claim 1, it is characterized in that, also comprise demister (3), described demister is located between wet cyclone (2) and corona discharge low temp cleaning plant for waste gas of plasma (6), the gas outlet of described wet cyclone (2) is connected with the air inlet of described demister (3), and the gas outlet of described demister (3) is connected with the air inlet of corona discharge low temp cleaning plant for waste gas of plasma (6).
4. lacquer spraying waste gas treating apparatus as claimed in claim 3, it is characterized in that, described demister (3) is baffle plate type demister, the air foam separator that described baffle plate type demister is comprised of several V-type deflection plates, and described baffle plate type demister is two groups.
5. lacquer spraying waste gas treating apparatus as claimed in claim 4, is characterized in that, described baffle plate type demister is made by stainless steel.
6. lacquer spraying waste gas treating apparatus as claimed in claim 1, is characterized in that, described corona discharge low temp cleaning plant for waste gas of plasma (6) comprises housing and is located at the corona discharge low temp plasma electrode (4) in housing.
7. lacquer spraying waste gas treating apparatus as claimed in claim 6, is characterized in that, is provided with the cleaning device (5) that can clean described corona discharge low temp plasma electrode (4) in described housing.
8. lacquer spraying waste gas treating apparatus as claimed in claim 1, is characterized in that, has two groups of spray heads (9) in described spray washing tower (8).
CN201410012941.7A 2014-01-13 2014-01-13 Painting-waste-gas treating device Pending CN103736351A (en)

Priority Applications (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107875782A (en) * 2016-08-09 2018-04-06 蔡惠萍 Improved furniture spray painting purifier
CN108465356A (en) * 2017-12-25 2018-08-31 襄阳光瑞汽车零部件有限公司 Spray exhaust treatment system
CN110772912A (en) * 2019-09-30 2020-02-11 广州紫科环保科技股份有限公司 Purification equipment for comprehensive waste gas of biological pharmaceutical factory

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10249126A (en) * 1997-03-17 1998-09-22 Shinto Dasutokorekutaa Kk Waste gas treating device
CN201208539Y (en) * 2008-05-09 2009-03-18 苏州艾特斯环保材料有限公司 Coking waste-gas combination purification apparatus
CN201445890U (en) * 2009-07-29 2010-05-05 蔡宇峰 Spray paint exhaust gas purification equipment
CN201760220U (en) * 2010-05-07 2011-03-16 宁波东方兴达环保设备有限公司 Plasma waste gas purifying device
CN102614731A (en) * 2012-04-05 2012-08-01 泉州市天龙环境工程有限公司 Purifying device for paint spraying organic waste gas and solvent recovering method thereof
CN102805997A (en) * 2012-08-24 2012-12-05 许以青 Waste gas treatment system
CN102872691A (en) * 2012-09-24 2013-01-16 浙江大明玻璃有限公司 Paint waste gas treatment process
CN203635019U (en) * 2014-01-13 2014-06-11 苏州克利亚环保科技有限公司 Spray paint waste gas treatment device

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10249126A (en) * 1997-03-17 1998-09-22 Shinto Dasutokorekutaa Kk Waste gas treating device
CN201208539Y (en) * 2008-05-09 2009-03-18 苏州艾特斯环保材料有限公司 Coking waste-gas combination purification apparatus
CN201445890U (en) * 2009-07-29 2010-05-05 蔡宇峰 Spray paint exhaust gas purification equipment
CN201760220U (en) * 2010-05-07 2011-03-16 宁波东方兴达环保设备有限公司 Plasma waste gas purifying device
CN102614731A (en) * 2012-04-05 2012-08-01 泉州市天龙环境工程有限公司 Purifying device for paint spraying organic waste gas and solvent recovering method thereof
CN102805997A (en) * 2012-08-24 2012-12-05 许以青 Waste gas treatment system
CN102872691A (en) * 2012-09-24 2013-01-16 浙江大明玻璃有限公司 Paint waste gas treatment process
CN203635019U (en) * 2014-01-13 2014-06-11 苏州克利亚环保科技有限公司 Spray paint waste gas treatment device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107875782A (en) * 2016-08-09 2018-04-06 蔡惠萍 Improved furniture spray painting purifier
CN107875782B (en) * 2016-08-09 2019-12-10 徐州欧美国林人造板有限公司 Improved furniture paint spraying and purifying device
CN108465356A (en) * 2017-12-25 2018-08-31 襄阳光瑞汽车零部件有限公司 Spray exhaust treatment system
CN110772912A (en) * 2019-09-30 2020-02-11 广州紫科环保科技股份有限公司 Purification equipment for comprehensive waste gas of biological pharmaceutical factory

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Application publication date: 20140423

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