Process for conditioning waste sulfuric acid

US5308600A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Helmold von Plessen · Kelkheim, DE
• Wolfram Fritsche-Lang · Bensheim, DE
• Horst Lorke · Liederbach, DE

Key dates

• Filing date: Oct 23, 1992
• Grant date: May 3, 1994
• Expiry date: Oct 23, 2012

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S423/02
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Process for conditioning waste sulfuric acid which is prone to precipitation of tars or resins, which comprises adding emulsifiers, preferably long-chain polyethers, to the waste sulfuric acid.