System for treating waste gas generated by automotive internal decorative board

Abstract

The invention discloses a system for treating waste gas generated by an automotive internal decorative board, comprising a shock hydraulic jump dust remover, a cyclone water film dust remover, a chemical absorption system, an absorption tank, an induced draught system, a high-altitude discharge system and a remained water purifying system. The method is a combined treatment technology of physics and chemistry and has the following advantages: two-stage dust removal consisting of the shock hydraulic jump dust remover and the cyclone water film dust remover effectively removes particle pollutants from waste gas generated by the automotive internal decorative board, simultaneously can reduce the temperature of the waste gas and reduce the influence on the purification effect of follow-up systems; the chemical absorption system is adopted, and copper sulfate absorption liquid with the mass concentration of 10 percent is used for absorbing compounds of phenols and aldehydes in the waste gas and part of volatile organic pollutants, thus reducing the load of volatile organic pollutants and prolonging regeneration period of absorbing material in the absorption tank; and the absorption tank adopts graded coke as the absorbing material, thus being capable of improving the efficiency of removing the volatile organic pollutants, having low price and being capable of effectively reducing the operation cost.

Description

Technical field [0001] The invention belongs to an exhaust gas treatment system. Specifically, it relates to an exhaust gas treatment system for the production of automotive interior panels. Background technique [0002] At present, my country's automotive interior panel production has been among the top in the world for many consecutive years, and there are nearly a thousand automotive interior panel manufacturers of various sizes across the country. Every year, it can provide nearly one million pieces of automotive interior panels for domestic and foreign automotive manufacturers. The production process of automotive interior panels is mainly to use the leftovers of some textile enterprises' cotton and linen products or cotton and linen fiber products. Firstly, they are broken into fibers, and then a certain amount of phenolic resin, phenol, ammonium polyphosphate and other binders are mixed in. , After heating and condensing in a polymerization oven, extrusion molding. In this...

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Problems solved by technology

[0005] (1) Water washing + spray purification treatment: more than 90% of domestic waste gas treatment technologies for automotive interior panels use this technology. Most of the particulate pollutants in the exhaust gas, but the removal efficiency of organic pollutants in the exhaust gas is low

[0006] (2) Dust removal + water washing process: Cyclone dust removal and packed tower water washing are mainly used, which can basically meet the requirements of dust removal, but the purification of organic pollutants needs to be strengthened, and the removal rate of exhaust gas odor after treatment is low, which cannot meet the emission standards

[0007] It can be seen that the main reason why the existing exhaust gas treatment system for the production of automotive interior panels cannot meet the standards is that the treatment process unit is too simple, and the treatment object is only the particulate pollutants in the exhaust gas, while the organic pollutants in the exhaust gas have not been effectively treated

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