Method of removing sulfur dioxide and other toxic and noxious components from flue gases

US4540555A · kind A · utility

Assignee

• Rheinisch-Westfalisches Elektrizitatswerk Aktiengesellschaft · DE

Inventors

• Paul W. U. Franke · Essen, DE
• Wolfgang Glaser · Graz, AT
• Georg R. U. Gebhard · Bergneustadt, DE
• Klaus Hein · Gedern, DE

Key dates

• Filing date: Aug 26, 1983
• Grant date: Sep 10, 1985
• Expiry date: Aug 26, 2003

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D53/501
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A method of and an apparatus for the desulfurization of the flue gases from a fossil fuel power plant. A particulate absorbent is contacted with the flue gases in a dry desulfurization step, particulates being then separated from the flue gas and being utilized in part as a secondary absorbent in a subsequent scrubbing of the flue gas. The sludge from the wet scrubbing is combined with the remainder of the dried particles from the separator to form a settable composition.