Method and apparatus for the thermal treatment of waste materials

US4976611A · kind A · utility

Assignee

• Man Gutehoffnungshutte Aktiengesellschaft · DE

Inventors

• Klaus Knop · Geldern, DE
• Gunter Wolters · Düsseldorf, DE

Key dates

• Filing date: Oct 2, 1989
• Grant date: Dec 11, 1990
• Expiry date: Oct 2, 2009

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E20/34
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In a method for the thermal treatment of wastes (combustible, poorly combustible and incombustible), especially those which cannot be harmlessly dumped, air is preheated in a first regenerator (2) to a temperature of 800.degree. to 1200.degree. C. and fed through a first combustion chamber (7) to a melting vessel (6) into which wastes are dumped for thermal treatment. The flue gas from the melting vessel is fed through a second combustion chamber (7') to a second regenerator (2'). The two regenerators contain sections for thermal storage (3, 3'), for the adsorption (4, 4') of flue gas impurities and for the further treatment (5, 5') of the flue gas. The air and flue gas flow is reversible, i.e., air preheated in the second regenerator (2') is fed to the melting vessel (6) through the second combustion chamber (7'). The flue gas is fed through the first combustion chamber (7) to the first regenerator (2).