Removal of phosgene from off-gases

US4064218A · kind A · utility

Assignee

• BASF SE

Inventors

• Heinrich Scholz · Mettmann, DE
• Martin Decker · Ludwigshafen, DE
• Franz Neumayr

Key dates

• Filing date: Jun 21, 1976
• Grant date: Dec 20, 1977
• Expiry date: Jun 21, 1996

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D53/70
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

Process for the removal of phosgene from an off-gas in which it is present in small quantities, by washing with an aqueous solution of alkali and ammonia.