Waste gas treatment system is used in polyimide production

The utility model discloses a waste gas treatment system is used in polyimide production, including heat transfer device, solvent recovery unit, solvent water absorbing device, moisture absorption pipe, heat transfer device includes hollow shell, and its inside is equipped with cold air duct, hot air duct, all is equipped with conventional air outlets and inlet, be equipped with metal partition between cold air duct, the hot air duct, be equipped with a plurality of heating nets in the cold air duct, the heating net comprises metal mesh and the sheetmetal around the metal mesh, is equipped with a plurality of heat transfer plates in the hot air duct, solvent recovery unit includes cooling tube, solvent storage tank, solvent takeover, and the cooling tube passes through connecting pipe andhot air duct's exit linkage, solvent water absorbing device includes box, case lid, intake pipe, outlet duct, water, inlet tube, outlet pipe. The utility model discloses carry out reusing heat to thedumped hot gas flow that h