Spray booth organic waste gas treatment system

Abstract

The invention discloses a spray booth organic waste gas treatment system. The spray booth organic waste gas treatment system comprises a dry-type filter, adsorption-desorption boxes, a catalytic combustion apparatus, an adsorption fan, a desorption fan and a gas supplementing fan, wherein the number of the adsorption-desorption boxes is three, the catalytic combustion apparatus is internally provided with a preheating chamber, a catalysis bed, a heat exchanger and a first thermocouple, and a heater is arranged in the preheating chamber; and the spray booth organic waste gas treatment system also comprises a PLC control system, wherein the PLC control system comprises a PLC controller, a first thermocouple and a first over-temperature alarming device which are installed in the adsorption-desorption box, a second over-temperature alarming device which is installed in the catalytic combustion apparatus and a differential pressure gauge which is arranged in the dry-type filter, and the PLCcontroller is installed in a control cabinet. The spray booth organic waste gas treatment system solves the problems that the spray waste gas is easy in blockage, and the waste gas cannot be stably up to the standard; moreover, the automation and intelligent degree of the system is high, the treatment effect for the waste gas is good, the purifying efficiency is greater than 98 percent, and the waste gas can reach and be higher than the national emission standard; and moreover, the waste gas is catalytically combusted online, so that the zero emission of the waste gas is realized.

Description

technical field [0001] The invention relates to the technical field of exhaust gas treatment, in particular to an exhaust gas treatment system for a spray booth. Background technique [0002] The main components of spray paint exhaust gas are paint spray dust and volatilized benzene, toluene, xylene, etc. Random discharge will have a certain impact on the surrounding environment. Therefore, it needs to be discharged after certain treatment. [0003] The traditional treatment process mainly includes: paint exhaust gas→water spray tower→dry-wet separation→primary effect filter→activated carbon adsorption→discharge. [0004] Due to the viscosity of paint powder, activated carbon adsorption is used to treat organic waste gas. After the activated carbon is saturated, catalytic combustion is used to desorb it. The exhaust gas discharged from the spray booth contains a certain amount of paint mist, which is a viscous substance. Therefore, before the exhaust gas enters the activated...

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Problems solved by technology

[0008] Aiming at the problems existing in the prior art, the present invention provides a treatment system for organic waste gas in a spray booth, which solves the problems that the waste gas from spray painting is easy to block and the waste gas cannot reach the standard stably, and the system has a high degree of automation and intelligence, and the treatment effect on waste gas Excellent, purification efficiency > 98%, meeting and higher than the national emission standards; and can carry out catalytic combustion treatment of exhaust gas online to achieve zero emission of exhaust gas

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