Paint spraying exhaust gas purification device

Abstract

The invention discloses a paint spraying exhaust gas purification device which comprises an adsorption region and a heat decomposition region. A gas collecting pipeline, a discharging pipeline and a gas inlet pipeline are separately connected in the adsorption region; the gas collecting pipeline sends collected paint spraying exhaust gas to the adsorption region; the paint spraying exhaust gas which is adsorbed is discharged from the discharging pipeline; hot air is introduced into the gas inlet pipeline to desorb the adsorption region and hot air containing volatile organic compounds to the heat decomposition region for heat decomposition and discharge the hot air into atmosphere; a first valve is arranged on the gas collecting pipeline, a second valve is arranged on the discharging pipeline, a third valve is arranged on the gas inlet pipeline, and a fourth valve is arranged between the adsorption region and the heat decomposition region. The paint spraying exhaust gas purification device has the obvious effects that the paint spraying exhaust gas purification device is simple in structure and simple to operate; the investment and the operating cost are lowered extremely by way ofpartition desorption and electric heating decomposition, so that the economical and environment-friendly pressure of industrial enterprises are alleviated.

Description

technical field [0001] The invention relates to the field of atmospheric environment protection, in particular to a paint spray exhaust gas purification device. 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 technology for dealing with large air volum...

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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