Catalytic combustion catalyst is used to make the combustible material in the exhaust gas at a lower temperature oxidative decomposition purification method. Therefore, catalytic combustion is also known as catalytic chemical conversion. Due to accelerating the process of oxidative decomposition of the catalyst, most of the hydrocarbons can be completely oxidized by the catalyst at a temperature of 300 to 450 ° C.

Compared with the thermal combustion method, catalytic combustion requires less auxiliary fuel, low energy consumption, and small equipment and facilities. However, due to the poisoning of the catalyst used and the high cost of replacement and cleaning of the catalytic bed, the promotion and application of this method in the industrial production process has been affected.