Patent ID: 7863490
Filing Date: 2011-01-04
Classification: C07C,Y02P

Abstract:
1. A process for the manufacture of 1,2-dichloroethane comprising: a) cracking a hydrocarbon source to produce a mixture of products comprising ethylene and other constituents; b) conveying the mixture of products to at least one storage reservoir; c) supplying the previously stored mixture of products to a chlorination reactor and/or an oxychlorination reactor; d) converting the ethylene contained in the mixture of products supplied to the chlorination reactor and/or the oxychlorination reactor to 1,2-dichloroethane; and e) separating the 1,2-dichloroethane obtained from streams of products derived from the chlorination and/or oxychlorination reactors, said process further comprising after a) and before e): b1) separating the mixture of products comprising ethylene into a fraction enriched with compounds lighter than ethylene and comprising part of the ethylene (fraction A), into a fraction enriched with ethylene (fraction B) and into a heavy fraction (fraction C); b2) conveying fraction A and fraction B to separate storage reservoirs (reservoir A and reservoir B, respectively); c1) conveying fraction A stored in reservoir A to a chlorination reactor; c2) conveying fraction B stored in reservoir B to a chlorination reactor and/or an oxychlorination reactor, d1) converting the ethylene contained in fraction A supplied to the chlorination reactor to 1,2-dichloroethane; and d2) converting the ethylene contained in fraction B supplied to the chlorination reactor and/or the oxychlorination reactor to 1,2-dichloroethane.