Process for the elimination of ammonia in coke plant waste waters

US4447333A · kind A · utility

Assignee

• Didier Engineering GmbH · DE

Inventors

• Dietrich Wagener · Essen, DE
• Theo Sander · Essen, DE
• Karl H. Laue

Key dates

• Filing date: Jan 12, 1983
• Grant date: May 8, 1984
• Expiry date: Jan 12, 2003

Classification

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

Abstract

A process for the elimination of ammonia in waste waters from a coke oven battery wherein ammonia-containing waste water or ammonia-containing vapor obtained by means of ammonia separation from the waste water are mixed with flue gas from the coke oven battery and sprayed into a NO.sub.x reactor at an elevated temperature with the resulting mixture being subjected to a catalytic redox reaction.