Method of producing vinyl chloride

摘要

A method of producing vinyl chloride, pyrolyzing gaseous and liqud hydrocarbons in a plasma jet of hydrogen or in a mixture of hydrogen and methane, with the addition of chlorine and/or HCl gas in such an amount that the content of HCl gas in the pyrolysis gas thus formed should be equal to the content of acetylene therein. Further the pyrolysis gas containing acetylene and ethylene is quenched with liquid hydrocarbons, purified from higher unsaturated hydrocarbons containing 3 or more carbon atoms, the acetylene is reacted with HCl gas, the resulting vinyl chloride is separated, the ethylene is reacted with chlorine, the dichloroethane thus formed is pyrolyzed with the formation of vinyl chloride and HCl gas, the vinyl chloride is separated, and the HCl gas is recycled to the stage of reacting acetylene and HCl gas.