Catalytic combustion: this method is suitable for treating organic waste gas and eliminating odor. The operating temperature of catalytic combustion method is half lower than that of ordinary combustion method, usually 200-400*c(generally lower than 800’c). Under the action of the catalyst, the hydrocarbons in the organic exhaust gas can be rapidly oxidized at a lower temperature to produce carbon dioxide and water, and emit combustion heat at the same time. The purification rate of catalytic combustion method can reach 95%, which is suitable for treating organic waste gas with high concentration, small air volume and high exhaust gas temperature. The appropriate design process can maintain combustion with only a small amount of energy supplement, generate abundant energy, completely decompose pollutants, and have low operation cost. However, the concentration of “trioheny!” in the paint exhaust gas is generally lower than 300mg / m3, so the catalytic combustion method is not suitable for the treatment of paint exhaust gas