Three-stage treatment equipment for printing and dyeing waste gas

Abstract

The invention discloses three-stage treatment equipment for printing and dyeing waste gas. The equipment comprises a supporting plate, a zeolite concentration device, a waste-gas drying device and a photocatalytic degradation device; the zeolite concentration device, the waste-gas drying device and the photocatalytic degradation device are all installed on the supporting plate. When the equipmentprovided by the invention desorb volatile matter adsorbed on zeolite, firstly a booster fan 2 is utilized to drive hot air to pass through the front surface of a zeolite wheel through a heat exchangepipe 1 to take away concentrated waste gas, the waste gas enters a circulation pipe through a heat exchange pipe 2, the circulation pipe communicates with the heat exchange pipe 1 through adjustment of a two-position three-way solenoid valve 1, a circulation fan is started to drive hot air to pass through the back side of the zeolite wheel through the heat exchange pipe 2, then the hot air entersthe circulation pipe through the heat exchange pipe 1, and the air is blown out by the circulation fan from the circulation pipe, so that the equipment realizes circulating flow of an internal airflow, prevents a new air flow from entering the interior, greatly improves the effects of reducing air and increasing the concentration, and makes the waste gas separated thoroughly through blowing of thepositive and negative surfaces of the zeolite wheel.

Description

technical field [0001] The invention relates to the technical field of waste gas treatment, in particular to a three-stage treatment equipment for printing and dyeing waste gas. Background technique [0002] In printing and dyeing production and processing, various dye auxiliaries and coating auxiliaries will be released in the form of organic gases such as formaldehyde, polybenzenes, and aromatic hydrocarbons, which are called VOCs, which are volatile organic compounds. The composition is complex, flammable and explosive, and difficult to decompose. There are many current treatment methods, mainly zeolite concentration + catalytic combustion, photo-oxygen catalytic treatment and dry paint mist filter. With the improvement of the country's exhaust gas emission requirements, environmental protection and waste utilization are advocated, so a three-stage printing and dyeing exhaust gas treatment equipment is proposed to solve the problem of single direction of hot air passage a...

AI Technical Summary

Problems solved by technology

With the improvement of the country's exhaust gas emission requirements, environmental protection and waste utilization are advocated, so a three-stage printing and dyeing exhaust gas treatment equipment is proposed to solve the problem of single direction of hot air passage and double sides of zeolite wheel in the process of zeolite concentration. The exhaust gas adsorbed on the surface cannot be quickly detached, which greatly reduces the efficiency of exhaust gas treatment

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