Process for the dry removal of sulfur dioxide from flue gas

US4710365A · 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: Aug 9, 1985
• Grant date: Dec 1, 1987
• Expiry date: Aug 9, 2005

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F23K2201/505
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A dry process for desulfurization of a power plant flue gas recovers, e.g. from an electrostatic precipitator, the solids which include unreacted absorbent, absorption reaction product and fly ash, and recycles at least part of this recovered solid product to contact with the flue gas for further absorption.