Method and device for treating xylene-containing waste gas

Abstract

The invention relates to the technical field of waste gas treatment, in particular to a method and a device for treating xylene-containing waste gas. The device is characterized by being sequentially provided with a dust removal chamber, a cooling treatment chamber, a spray tower, a demisting chamber and an adsorption chamber, wherein a dust remover used for removing solid particles in the waste gas is arranged in the dust removal chamber; an electric demister is arranged in the demisting chamber; the electric demister adopts corona discharge and is connected with an external high-voltage direct current (DC) generator. According to the device for treating the xylene-containing waste gas, a plurality of stages of adsorption grilles which are sequentially arranged along the gas flow direction are positioned in the adsorption chamber, and the distances among the adsorption grilles are 25-45cm; each adsorption grille is provided with calcium oxide powder, glass fiber and active carbon granules; compared with the prior art, the method and the device overcome the defects that in the existing xylene-containing waste gas treatment process, harmful substances such as acid mist and the like in the waste gas can not be completely removed, the treatment efficiency is low, secondary pollution is easily caused, and the like; the method and the device have the remarkable advantages of being reasonable in process, low in cost, free from secondary pollution by-products, and the like.

Description

Technical field: [0001] The invention relates to the technical field of waste gas treatment, in particular to a treatment method and device for xylene-containing waste gas. Background technique: [0002] Leather production, automobile painting, furniture painting and other spraying industries will produce a large amount of coating mist in the production process, and the exhaust gas contains a relatively high concentration of volatile organic gases (VOCs) such as toluene, xylene and non-methane total hydrocarbons. . [0003] These organic gases not only irritate the human body and seriously threaten human health, but also olefins and certain aromatic compounds in organic compounds can react with nitrogen oxides in the atmosphere and under the action of sunlight to form Los Angeles-type nitrogen oxides. Photochemical smog or industrial photochemical smog causes secondary pollution and damages the ecological environment. Therefore, it is very urgent to deal with the paint mis...

AI Technical Summary

Problems solved by technology

However, using a single biological filtration technology to treat spraying exhaust gas cannot achieve a good removal effect

The main reason is that the spray in the exhaust gas will not only reduce the removal effect of the biological filtration device, but also cause wear and corrosion to the body of the device

Images