Process for purification of HCl from pyrolysis of EDC

US4839153A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Ludwig Schmidhammer · Haiming, DE
• Gerhard Dummer · Altötting, DE
• Peter Hirschmann · Puchheim, DE
• Rudolf Strasser · Baoshan, TW
• Franz Haunberger · Burghausen, DE

Key dates

• Filing date: Feb 3, 1988
• Grant date: Jun 13, 1989
• Expiry date: Feb 3, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B33/10763
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

In a process for the purification of hydrogen chloride from the pyrolysis of 1,2-dichloroethane, optionally after a preceding step of acetylene removal by selective hydrogenation under specific conditions followed by rectification of the resulting mixture to obtain hydrogen chloride containing at most 5 ppm of unsaturated hydrocarbons and at most 5 ppm of chlorinated hydrocarbons.