Patent ID: 6229059
Filing Date: 2001-05-08
Classification: C07C

Abstract:
A process for the production of 1,2-dichlorethane (EDC), comprising the steps of:(a) reacting ethylene and chlorine in liquid phase (direct chlorination) in the presence of a catalyst;(b) drawing off 1,2-dichloroethane produced in gaseous phase;(c) separating high-boilers from the 1,2-dichloroethane in a heavy-ends column and in a downstream vacuum column;(d) separating light-boilers and gases including ethylene and hydrogen in an EDC stripping column or in a light-ends column; and(e) neutralizing vapors in the EDC stripping column or the light-ends column by using an alkaline substance, wherein the hydrogen chloride is removed and 1,2-dichloroethane leaving the heavy-ends column is cleaned in the EDC stripping column or in the light-ends column thereby separating the light boilers and the gases.