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Paint mist treatment method and spraying tank

A treatment method and spray box technology, applied in the direction of gas treatment, separation methods, chemical instruments and methods, etc., can solve the problems that the purification treatment system cannot operate normally, affect the effect of waste gas treatment, blockage of water channels and gas channels, etc., and achieve good results. Paint mist removal effect, beneficial to cleaning, and prevents the effect of clogging the pipeline

Active Publication Date: 2016-04-20
吴永光 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor paint mist removal effect of this simple spray box, the water vapor mixed in the exhaust gas enters the activated carbon adsorption tower together, causing the activated carbon to become wet and invalid, so it cannot be widely used
Moreover, the paint mist will adhere to the equipment, pipes and the inside of the pump body. After a period of use, it will cause blockage of water and air passages, making it difficult to clean up, resulting in the failure of the purification treatment system to operate normally, affecting the effect of waste gas treatment, and affecting the spraying effect. damage to the box and affect its service life

Method used

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  • Paint mist treatment method and spraying tank
  • Paint mist treatment method and spraying tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] A method for treating paint mist, comprising the steps of:

[0053] (1) The spraying exhaust gas generated in the spraying process enters the paint mist treatment chamber, and the water curtain formed by the circulating water on the water curtain baffle 12 washes and absorbs the spraying exhaust gas, and part of the paint mist of the spraying exhaust gas is brought into the spray box by the water curtain Circulating pool 15 at the bottom;

[0054] (2) After part of the paint mist is treated by the water curtain, the spraying exhaust gas enters the rotating washing drum for rotating washing. Under the action of the deflector swirl plate and the washing ball, the spraying exhaust gas is fully mixed with the circulating water in the rotating washing drum, and the rotating washing drum The spray device 16 on the top sprays and absorbs the spraying exhaust gas, and the paint mist is trapped and brought into the circulating pool 15;

[0055] (3) After the spraying exhaust ga...

Embodiment 2

[0075] The difference between this embodiment and embodiment 1 is:

[0076] In this embodiment, the paint mist decomposer includes the following components in mass percent:

[0077] Active foaming agent 10%

[0078] Sodium hydroxide 2%

[0079] Citric acid 5%

[0080] water balance.

[0081] Further, the active foaming agent is an alkyl glycoside.

[0082] Further, the paint mist collector includes anionic polyacrylamide with a mass percentage of 10%. The molecular weight of the anionic polyacrylamide is 3 million.

[0083] Further, the paint mist collector also includes the following components in mass percentage:

[0084] Carboxymethylthiourea Chitosan 20%

[0085] Nano Zinc Oxide 10%

[0086] Monocetyl Maleate Sodium Salt 3%

[0087] Wherein, the particle size of the nano zinc oxide is 10nm.

[0088] Further, the defogging layer 14 is filled with Raschig rings.

[0089] Further, there are three swirl water washing drums 13, and using multiple swirl water washing ...

Embodiment 3

[0092] The difference between this embodiment and embodiment 1 is:

[0093] In this embodiment, the paint mist decomposer includes the following components in mass percent:

[0094] Active foaming agent 30%

[0095] Sodium hydroxide 4%

[0096] Citric acid 8%

[0097] water balance.

[0098] Further, the active foaming agent is tea saponin and fatty alcohol polyoxyethylene ether, and the combination of these two surface active substances can mutually enhance the surface activity performance of the two, improve the foaming ability of the mixed liquid and the stability of the foam , the combination of the two can also improve the biodegradability of surfactants, reduce biological toxicity, and avoid pollution to the environment.

[0099] Further, the paint mist collector includes anionic polyacrylamide with a mass percentage of 30%. The molecular weight of the anionic polyacrylamide is 8 million.

[0100] Further, the paint mist collector also includes the following compon...

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Abstract

The invention relates to the technical field of spraying waste gas treatment, in particular relates to a paint mist treatment method and a spraying tank. The paint mist treatment method comprises the following steps: (1) carrying out spraying adsorption on spraying waste gas by a water curtain formed by circulating water on a water screen baffle plate; (2) enabling the spraying waste gas to enter a rotary washing drum, carrying out rotary washing on the spraying waste gas, and carrying out spraying absorption on the spraying waste gas by a spraying device arranged at the top part of the rotary washing drum; (3) exhausting the spraying waste gas after treating the spraying waste gas through a demisting layer, wherein a paint mist decomposer and a paint mist catcher are added in the circulating water which is used for treating the spraying waste gas. According to the paint mist treatment method disclosed by the invention, the technologies of water screen spraying, rotary washing and spraying adsorption are combined, and a good paint mist removing effect is obtained; the paint mist decomposer and the paint mist catcher are matched with each other to be added in the circulating water, so that paint mist can be effectively prevented from sticking on the inner wall of the spraying tank; the paint mist in the circulating water is enabled to be flocculated and floats up, so that cleaning of floating paint mist scum is facilitated, the service cycle of the circulating water is prolonged, and the damage to equipment is reduced.

Description

technical field [0001] The invention relates to the technical field of spraying waste gas treatment, in particular to a paint mist treatment method and a spray box. Background technique [0002] During the coating process, the VOCs waste gas generated must be effectively treated before being discharged into the atmosphere. At present, the widely used treatment method is activated carbon adsorption. This treatment method requires that the exhaust gas containing VOCs must be clean in order to achieve the ideal treatment effect. Therefore, a spray device is often placed in front of the activated carbon adsorption tower to remove the paint mist in the exhaust gas of the coating. The purpose is to ensure that the activated carbon layer is not blocked and to reduce the concentration of VOCs in the exhaust gas, greatly extending the replacement cycle of activated carbon. [0003] At present, a simple spray box is generally used for paint mist pretreatment, that is, multiple spray ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D47/00B01D47/06B01D50/00B01D53/14
CPCB01D47/022B01D47/06B01D50/00B01D53/1487B01D2257/708B01D2252/103
Inventor 吴永光
Owner 吴永光
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