Reduction in the rate of oxidation of sulfite solutions

US5077023A · kind A · utility

Assignee

• BASF SE

Inventors

• Bernd Leutner · Bischofswerda, DE
• Klaus-Dieter Hoppe · Monsheim, DE
• Paul-Michael Bever · Mannheim, DE
• Matthias Kraume · Mannheim, DE

Key dates

• Filing date: Jul 12, 1990
• Grant date: Dec 31, 1991
• Expiry date: Jul 12, 2010

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D53/501
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The rates of oxidation of sulfite/bisulfite-containing solutions in gas-liquid scrubbers for removing SO.sub.2 from gases are reduced by adding oxidation inhibitors to the solutions in an amount of from 0.02 to 20 mmol per hour and per square meter of exchange area.