Abstract: 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.

Abstract: Apparatus (30) for the sealed fixing of a tube (1) at the point where it enters a receptacle is provided. One end (10, 11) of the tube (1) forming a ball joint (7, 8, 10, 11), cooperating with a component (7, 8) made of flexible material, is rigidly mounted in relation to the receptacle. The apparatus (30) has: a sleeve member (14), through which tube (1) passes and which is designed to be mounted integrally with the receptacle; and at least one O-ring (3, 4), against the tube, O-ring (3, 4) being housed in a groove in that part of the sleeve member (14) facing the tube (1).

Abstract: The invention concerns a method for obtaining directly polymerisable vinyl chloride which consists in subjecting a cooled raw product derived from of pyrolysis of 1,2-dichloroethane, to another cooling process at a temperature not more than 40° C., under pressure ranging between 10 to 15 bars then in leaving it at substantially identical temperature and pressure levels for a duration not more than 20 minutes. The invention also concerns a device for implementing the method.

Abstract: The invention concerns a method for obtaining directly polymerisable vinyl chloride which consists in subjecting a cooled raw product derived from of pyrolysis of 1,2-dichloroethane, to another cooling process at a temperature not more than 40° C., under pressure ranging between 10 to 15 bars then in leaving it at substantially identical temperature and pressure levels for a duration not more than 20 minutes. The invention also concerns a device for implementing the method.