Process and apparatus for purifying dust- and pollutant-containing exhaust gases

US5160510A · kind A · utility

Assignee

• Metallgesellschaft AG · DE

Inventors

• Karl Steinbacher · Mühlheim, DE
• Hermann Schmidt · Linz, DE
• Wilhelm Leussler · Frankfurt, DE

Key dates

• Filing date: Mar 31, 1991
• Grant date: Nov 3, 1992
• Expiry date: Mar 31, 2011

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B03C3/88
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process and apparatus are used for purifying dust- and pollutant-containing exhaust gases, which are first subjected in a first stage to a dry purification in a mass separator and are subsequently subjected in a second stage to an electrostatic purification in an electrostatic precipitator. In the second stage the exhaust gases are passed through one or more fields provided with liquid-wetted collecting electrodes, which define gas passages. The electrostatic precipitator also has an overflow trough and a collecting trough for each collecting electrode. Liquid supplied to the overflow trough flows onto the collecting electrode and then is collected in the collecting trough.