Coating line waste gas purification treatment system

The utility model relates to the technical field of paint mist waste gas purification treatment facilities, and discloses a coating line waste gas purification treatment system which comprises a dry type filter, an activated carbon adsorber, an RCO catalytic combustion device, an exhaust smoke bin and an adsorption fan, and the dry type filter is connected with the activated carbon adsorber and feeds waste gas into the activated carbon adsorber under suction of the adsorption fan; the activated carbon adsorber is connected with the exhaust smoke bin and exhausts purified gas through the smoke bin, a temperature sensor I and a nitrogen nozzle I are arranged in the activated carbon adsorber, the nitrogen nozzle I is connected with a nitrogen making unit through a nitrogen pipe I, the nitrogen pipe I is provided with a pneumatic valve I, and the nitrogen making unit is connected with a compressed air tank. The temperature sensor I is in control connection with the nitrogen making unit and the pneumatic valve I;