Method and device for treatment of air containing viscous paint particles

Abstract

The invention provides a method for treatment of air containing viscous paint particles. Firstly, coating waste gas is collected, and paint spraying waste gas containing viscous paint particles and volatile organic compounds is sent into a paint purifier through a pipeline; the waste gas passes through a filter device at the bottom of the paint purifier firstly, a part of the paint particles in the waste gas adhere to the surface of the filter device, and other paint particles and the volatile organic compounds in the waste gas pass through the filter device and enter an inner cavity of the paint purifier provided with a centrifugal turntable, and the paint particles are purified; the volatile gas of the coating waste gas is purified by an activated carbon adsorber. The method has the advantages of short process flow, simple equipment structure design, good paint purification effect, stable operation of equipment, low energy consumption, safety and reliability, and can effectively solve the problem of treatment of waste gas containing viscous paint particles.

Description

Technical field: [0001] The invention relates to the field of environmental engineering, in particular to an air treatment method and device containing sticky paint particles. technical background: [0002] According to the surface coating production process, the exhaust gas in the coating industry mainly comes from the pre-treatment, spraying, and drying processes. The pollutants emitted are mainly: dust generated during the pre-treatment process, paint particles and organic solvents generated during painting, drying and volatilization organic solvents produced. The paint particles mainly come from the part of the solvent-based paint scattered in the air spray operation, and its composition is consistent with the paint used. Organic solvents mainly come from solvents and thinners during the use of paint, and most of them are volatile emissions. The main pollutants are xylene, benzene, toluene, etc. [0003] The waste gas generated during the painting process mainly includ...

AI Technical Summary

Problems solved by technology

The traditional method of removing paint particles generally adopts dry filtration, but in the existing technology, when physical interception methods such as filtration are used for treatment, it is often unusable due to the adhesion of paint particles to the equipment

The traditional wet treatment of spray paint organic waste gas generally uses water-washing spray booths or spray towers. The main problem is that the purification efficiency is low and the pre-treatment requirements cannot be met.

The existing packing spray tower is easy to block, has high resistance, and cannot operate stably

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