VOCs waste gas treatment conversion Xiamen catalytic combustion

　　Characteristics of photocatalytic oxidation:

　　(1) Photocatalytic oxidation is suitable for completely oxidizing organic waste gas into non-toxic and harmless substances at room temperature, and is suitable for treating toxic and harmful gases with high concentration, medium gas volume, and strong stability.

　　(2) Effective purification can be achieved through photocatalytic oxidation, which directly oxidizes organic waste gases in the air into non-toxic and harmless substances without leaving any secondary pollution.

　　Process principle and flow: Catalytic purification is a typical gas-solid phase catalytic reaction, which essentially involves deep oxidation with the participation of reactive oxygen species. In the process of catalytic purification, the role of the catalyst is to reduce the activation energy, and at the same time, the surface of the catalyst has adsorption, which enriches the reactant molecules on the surface and increases the reaction rate, accelerating the progress of the reaction. With the help of catalysts, organic waste gas can undergo flameless combustion at lower ignition temperatures, and be oxidized and decomposed into CO2 and H2O, while releasing a large amount of heat energy, thus achieving the method of removing harmful substances from the waste gas.

　　Catalytic combustion is a purification method that uses catalysts to oxidize and decompose combustible substances in exhaust gas at lower temperatures. So, catalytic combustion is also known as catalytic chemical conversion. Due to the acceleration of the oxidation decomposition process by the catalyst, most hydrocarbons can be completely oxidized by the catalyst at temperatures of 300-450 ℃.

　　Compared with the thermal combustion method, catalytic combustion requires less auxiliary fuel, consumes less energy, and has smaller equipment and facilities. However, the promotion and application of this method in industrial production processes have been affected by issues such as catalyst poisoning, replacement of catalytic beds, and high cleaning costs.