Process for reduction of SO.sub.2

US4117101A · kind A · utility

Assignee

• Davy Powergas, Inc. · US

Inventors

• Joachim Fechner · Hennef (Sieg), DE
• Siegward Fiebig · Pulheim, DE
• Friedrich Fischer · Seevetal, DE
• Herbert Fischer · Goldkronach, DE
• Lars Hellmer · Regen, DE
• Konrad Riedel · Cologne, DE
• Adolf Stauffer
• Kuldip Kumar Sud

Key dates

• Filing date: Mar 14, 1977
• Grant date: Sep 26, 1978
• Expiry date: Mar 14, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B17/0478
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Sulfur dioxide in sulfur dioxide-containing gases is thermally reduced at relatively moderate temperatures under reducing conditions provided by the incomplete combustion of hydrocarbon to produce elemental sulfur. Elemental sulfur can be recovered from the effluent gases from the thermal reduction and the effluent gases may be treated by conventional catalytic processes to recover additional elemental sulfur from the remaining sulfur values.