Process for cleaning up wastewaters from the hock process

US6299783A · kind A · utility

Assignee

• Phenolchemie GmbH & Co. KG · DE

Inventors

• Otto Gerlich · Gladbeck, DE
• Werner Pompetzki · Dorsten, DE
• Dietmar Ahrens · Aschendorf, DE

Key dates

• Filing date: Aug 19, 1999
• Grant date: Oct 9, 2001
• Expiry date: Aug 19, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S210/919
• WIPO field: Environmental technology
• WIPO sector: Chemistry

Abstract

A process for reducing the loading of wastewaters produced in the preparation of hydroxyl and carbonyl compounds from hydroperoxides by the Hock process, which may be acidic, by treating the wastewaters with an oxygen-containing gas at a pressure greater than 25 bar absolute and at a temperature of 150-250.degree. C. Surprisingly, improved degradation rates are achieved under these conditions.