METHOD OF OBTAINING 1,2-DICHLOROETHANE BY DIRECT CHLORINATION WITH A STEP OF SEPARATION FROM THE CATALYST BY DIRECT EVAPORATION, AND FACILITY FOR THE IMPLEMENTATION THEREOF

摘要

The present invention relates to a method of producing liquid 1,2-dichloroethane (DCE), obtained by low-temperature direct chlorination of ethylene, in the presence of a Lewis acid-type catalyst, that makes it possible to obtain, after separation of the catalyst, DCE of sufficient purity to give, via cracking, vinyl chloride monomer (VCM); characterized in that it comprises a step of dechlorination (5) of the liquid DCE stream (4) exiting the chlorination reactor (1), that makes it possible to remove the excess dissolved chlorine, followed by a step of direct evaporation (9) of the whole of the liquid DCE stream (8) exiting said reactor, that makes it possible to separate the catalyst from the evaporated fraction (10) of the stream of DCE good for cracking.;The invention also relates to the plant for the implementation of such a method.