Process for oxychlorination of ethylene

US4754088A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Ludwig Schmidhammer · Haiming, DE
• Peter Hirschmann · Puchheim, DE
• Herbert Patsch · Braunau am Inn, AT
• Rudolf Strasser · Baoshan, TW

Key dates

• Filing date: Feb 11, 1987
• Grant date: Jun 28, 1988
• Expiry date: Feb 11, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C17/156
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

In a process for preparation of 1,2-dichloroethane by chlorination of ethylene-containing reaction vent gases from the oxychlorination of ethylene in the presence of a catalyst carrier impregnated with metal compounds wherein the waste from the oxychlorination stage are chlorinated, the improvement comprising preheating the ethylene-containing waste gases to at least 50.degree. C. and then chlorinating the ethylene at 100.degree. to 300.degree. C. at a pressure of 1 to 7 bar with a space velocity of 100 to 5000 h.sup.-1 related to standard conditions in the presence of at least one metal compound selected from the group consisting of chlorides and oxides of manganese, nickel and cobalt supported on a catalyst carrier with reduced formation of oxychlorinated by-products.