Equipment for removal of multiple pollutants in waste gas of setting machine and in-situ regeneration of adsorbent and method of equipment

Abstract

The invention relates to equipment for removal of multiple pollutants in waste gas of a setting machine and in-situ regeneration of an adsorbent. The equipment includes a dust-removing oily fume-removing device, a flue gas de-whitening device, a VOC adsorption regeneration device and an oil-water separation device; the dust-removing oily fume-removing device comprises a filter and a wet electrostatic precipitator, the flue gas de-whitening device includes a first-stage gas-water heat exchanger, a third-stage gas-water heat exchanger, a second-stage gas-water heat exchanger, and a water coolingtower, the VOC adsorption regeneration device includes an adsorption tank, a catalytic burner and a gas-gas heat exchanger, and the oil-water separation device includes an oil-water separator; an inlet of the filter is connected with the waste gas of the setting machine; an inlet of the first-stage gas-water heat exchanger is connected with an outlet of the filter, and the first-stage gas-water heat exchanger is connected with the third-stage gas-water heat exchanger located at an outlet of the adsorption tank. The equipment has the following beneficial effects: 1) simultaneous removal and ''de-whitening'' of the multiple pollutants are realized; 2) the generation amount of waste water is reduced; and 3) the adsorbent is regenerated in situ.

Description

technical field [0001] The invention belongs to the technical field of resources and environment, and in particular relates to a device and method for removing multi-pollutants from waste gas of a setting machine and in-situ regeneration of an adsorbent. Background technique [0002] The distribution of printing and dyeing enterprises is concentrated, and the exhaust gas of the setting machine contains a large amount of pollutants such as fiber dust (particulate matter), oil fume, VOCs, etc., which adversely affects the quality of the regional air environment. In March 2015, Zhejiang Province promulgated the local standard "Emission Standard of Air Pollutants for Textile Dyeing and Finishing Industry" (DB 33 / 962-2015) before the national level. The emissions of benzene series have proposed emission limits. [0003] At present, printing and dyeing enterprises mostly use water spray or wet electrostatic precipitator technology to control the exhaust gas pollution of setting m...

AI Technical Summary

Problems solved by technology

[0004] 1) Without a dedicated VOCs control unit, it cannot meet the requirements of the new standard;

[0005] 2) Due to the high temperature of the exhaust gas of the setting machine, "white smoke" will be emitted after wet treatment, which will affect the appearance

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