Utilization of soot from synthesis gas production in sewage treatment

US5073271A · kind A · utility

Assignee

• BASF SE

Inventors

• Bruno Sander · Ludwigshafen, DE
• Siegfried Marquardt · Frankenthal (Pfalz), DE
• Uwe Kempe · Schifferstadt, DE
• Wolfgang Vodrazka · Freinsheim, DE
• Gero Lueth · Mannheim, DE

Key dates

• Filing date: Jan 30, 1991
• Grant date: Dec 17, 1991
• Expiry date: Jan 30, 2011

Classification

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

Abstract

The soot obtained in the form of a soot-containing aqueous waste liquor in the course of synthesis gas manufacture is utilizable by PA1 a) mixing said liquor in a sewage sludge treatment plant with a sewage sludge to which organic flocculants are added as drainage aids with or without a further quantity of finely divided coal or ash, PA1 b) filtering this pretreated sludge mixture, PA1 c) incinerating the resulting filter cake and PA1 d) burying the ash in a sanitary landfill.