Auxiliary treatment device for roller coating waste gas of four-color pre-roller coating aluminum coil

Abstract

The invention discloses an auxiliary treatment device for roller coating waste gas of a four-color pre-roller coating aluminum coil. The auxiliary treatment device comprises a box body, a first-stage filtering mechanism, a second-stage filtering mechanism, an adjusting mechanism, an ultraviolet light degradation mechanism, an activated carbon adsorption mechanism, a gas inlet pipeline, a gas exhaust pipeline and a return pipeline, wherein the gas inlet pipeline and the gas exhaust pipeline are arranged at the two ends of the box body respectively; the first-stage filtering mechanism, the second-stage filtering mechanism, the adjusting mechanism, the ultraviolet light degradation mechanism and the activated carbon adsorption mechanism are arranged in the box body; the return pipeline is arranged on the outer side of the box body and is connected with the adjusting mechanism and the first-stage filtering mechanism; the first-stage filtering mechanism is arranged at one end of the box body; the second-stage filtering mechanism is arranged between the first-stage filtering mechanism and the adjusting mechanism; the activated carbon adsorption mechanism is arranged at the other end of the box; and the ultraviolet light degradation mechanism is arranged between the activated carbon adsorption mechanism and the adjusting mechanism. The device is fine in structure, can well control the air speed and the air volume, and enables waste gas treatment to be more thorough.

Description

technical field [0001] The invention belongs to the technical field of organic waste gas treatment, in particular to an auxiliary treatment device for four-color pre-roller coating aluminum coil roll coating waste gas. Background technique [0002] The existing organic waste gas is basically treated by RTO combustion method, ultraviolet photodegradation and activated carbon adsorption method; RTO combustion method is suitable for large-scale factories to treat a large amount of waste gas; compared with RTO combustion treatment method, ultraviolet photodegradation and activated carbon adsorption treatment The method is suitable for a small amount of waste gas treatment, or for locations or industries where the amount of waste gas treatment is not suitable and is not suitable for installing large-scale RTO equipment, and it is used as auxiliary treatment equipment; the cost is relatively low; [0003] The existing treatment methods of ultraviolet photodegradation and activated...

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Problems solved by technology

[0004] 1) The structure of the equipment is relatively simple, and the classification of the filter mechanism is relatively simple and vague; if the filter mechanism only uses one-time coarse filtration, it only targets larger particles in the exhaust gas, and there are still a small number of particles passing through which will cause a greater burden on the post-processing mechanism; such as ultraviolet light degradation Incomplete or rapid saturation of activated carbon plate adsorption, etc.;

[0005] 2) There is a lack of control mechanism for air volume and wind speed; when the wind speed and air volume are large, the speed of exhaust gas passing through is too fast to make ultraviolet light degradation and activated carbon plate adsorption more thorough;

[0006] 3) The commonly used method of the existing ultraviolet photodegradation mechanism is that the exhaust gas diffuses through the box body pipeline in the part of the ultraviolet photodegradation mechanism, that is, the exhaust gas fills the entire warehouse body, which not only reduces the targeted ultraviolet light irradiation, but also causes exhaust gas to appear. The relatively turbulent flow makes it impossible to transfer to the next treatment process in time, thus reducing the treatment effect

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