Multistage VOCs industrial tail gas treatment system

Abstract

The invention belongs to the field of gas treatment equipment, and particularly relates to a multistage VOCs industrial tail gas treatment system which comprises a dust removal chamber, a conveying belt, a dust washing tank, a washing tank, a connecting pipe and an activated carbon adsorption tank, and further comprises a dust removal module, a sand filtering module, a stirring module and a washing module, wherein the dust removal module is used for preliminary treatment of industrial tail gas; the sand filtering module is used for separating solid sand and water in the industrial tail gas; the stirring module is used for washing dust in the industrial tail gas; the washing module is used for washing the industrial tail gas after dust removal, and the industrial tail gas is introduced intothe dust removal chamber through a first gas inlet, the industrial tail gas is processed by the dust removal module, the sand filtering module, the stirring module and the washing module in sequence,passes through the connecting pipe and reaches the activated carbon processing box, and the drying layer inside the connecting pipe absorbs the liquid in the industrial tail gas, the activated carbonin the activated carbon adsorption tank is used for re-absorbing harmful organic matters in the industrial tail gas, so that the cleanness of the discharged gas is ensured.

Description

technical field [0001] The invention belongs to the field of gas treatment equipment, in particular to a multi-stage VOCs industrial tail gas treatment system. Background technique [0002] VOCs waste gas is a common industrial waste gas in the chemical industry. It has complex components and contains a large amount of organic substances such as hydrocarbons, aldehydes, chlorinated hydrocarbons, etc. Most of the components are carcinogenic pollutants. If they are discharged into the atmosphere without treatment, It will seriously endanger human health and cause great harm to the environment. Therefore, the requirements for VOCs tail gas treatment technology are getting higher and higher, and it is necessary to efficiently complete tail gas treatment in limited equipment. [0003] At present, the VOCs tail gas treatment methods commonly used in industry include: incineration method, plasma purification method, activated carbon adsorption method, and photocatalytic method. Am...

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Problems solved by technology

[0005] In the above-mentioned patent documents, the VOCs tail gas is treated in multiple stages by setting the dust removal box, the washing tank and the activated carbon adsorption box connected in sequence, and the acidic substances in the washing tank are removed to improve the tail gas treatment effect, but this device cannot treat the VOCs in the washing tank. The washing liquid and the solid sand in the tail gas are recycled, which is not conducive to the full utilization of resources

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