Spraying waste gas purification system and purification method thereof

Abstract

The invention discloses a spraying waste gas purification system and a purification method thereof.The system is provided with an adsorption area, a first heat recycling area and a thermal decomposition area.The adsorption area is connected with a gas collection pipeline, a discharge pipeline and a gas inlet pipeline and connected with a first inlet of the first heat recycling area through a pipeline.A first outlet of the first heat recycling area is connected with a second inlet of the first heat recycling area through the thermal decomposition area.A second outlet of the first heat recycling area exhausts air subjected to thermal decomposition, the second heat recycling area is further connected between a second outlet of the first heat recycling area and the atmosphere, and a second outlet of the second heat recycling area is connected with the gas inlet pipeline through a preheating area.The system has the advantages that the structure is simple, operation is easy, investment and operation cost is greatly reduced through the modes of partition desorption and electric heating decomposition, and economic and environment protection burdens of industrial enterprises are effectively relieved.

Description

technical field [0001] The invention relates to the technical field of atmospheric environment protection, in particular to a paint spray exhaust gas purification system and a purification method thereof. Background technique [0002] With the increase of environmental protection requirements and investment in environmental protection year by year, the improvement of atmospheric environmental quality is not obvious, and smog occurs frequently in various places. After SO2, NOx and dust became the control objects, volatile organic compounds (VOCs) were also included in the scope of air pollutant control. VOCs treatment technologies mainly include activated carbon adsorption, condensation recovery, adsorption concentration + oxidative combustion (regenerative combustion RTO, heat recovery thermal incineration TNV or regenerative catalytic RCO), low temperature plasma, photocatalysis and biological methods, among which adsorption concentration + Oxidative combustion is a common...

AI Technical Summary

Problems solved by technology

However, in the existing treatment technologies, the problem of the adsorption concentration + oxidation combustion method for the treatment of spray paint exhaust gas is that it has high requirements for operation and maintenance, and high investment and operation and maintenance costs; regenerative combustion RTO and heat recovery thermal incineration TNV generally require The use of gas requires high combustion control and secondary pollution; regenerative catalytic RCO requires the use of expensive and easily deactivated catalysts

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