Carboxylic acid activated dry calcium absorbent method for removing sulfur dioxide from a flue gas

US4533532A · kind A · utility

Assignee

• Rheinisch-Westfalisches Elektrizitatswerk Aktiengesellschaft · DE

Inventors

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

Key dates

• Filing date: Jul 2, 1984
• Grant date: Aug 6, 1985
• Expiry date: Jul 2, 2004

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D53/508
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

An absorbent for the dry removal of sulfur dioxide and other noxious and toxic components from a combustion flue gas which consists essentially of at least one finely divided alkaline-earth compound and an additive selected from the group which consists of at least one carboxylic acid or an alkali metal, alkaline-earth metal or ammonium salt thereof.