Trichloroethylene production process more methods, mainly acetylene, ethylene direct chlorination, ethylene oxychlorination. The acetylene method is mainly a saponification method and a gas phase catalytic dehydrochlorination method. Saponified trichloroethylene production process is simple, but the amount of saponification residual liquid is more, environmental pressure is greater and has been eliminated. From the standpoint of process technology, ethylene oxychlorination is a more advanced process. Due to the oxychlorination reaction, large amounts of hydrogen chloride are avoided.
The most commonly used is the ethylene method, which is low in cost and suitable for a wide range of production. Ethylene can be divided into direct chlorination and ethylene oxychlorination according to different legal reaction processes. Direct oxidation is a process in which chlorine is directly chlorinated to produce a mixture of tetrachloroethane and pentachloroethane. Trichloroethylene is obtained by cracking and separation. The ethylene oxychlorination method uses ethylene, oxygen and chlorine as raw materials to obtain trichloroethylene by catalysis.