Removal of sulfur compounds from gases

US4664903A · kind A · utility

Assignee

• Linde GmbH · DE

Inventors

• Hans Becker · Tönisvorst, DE
• Michael Heisel · Munich, DE
• Karl Baur · Baierbrunn, DE

Key dates

• Filing date: Jun 7, 1985
• Grant date: May 12, 1987
• Expiry date: Jun 7, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10K1/16
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

For the removal of sulfur compounds, especially H.sub.2 S, from gases that contain hydrocarbons, and/or CO.sub.2, the gases are scrubbed with a physical solvent, which is to be regenerated and reused. To obtain sulfur free of hydrocarbons, as well as a practically sulfur-free LPG fraction and optionally a C.sub.5+ fraction, an oxidizing agent is added to the solvent for reacting the sulfur compounds to elemental sulfur, and the sulfur is separated. The concomitantly absorbed hydrocarbons and/or CO.sub.2 can then be desorbed from the separated solvent by physical regeneration and can be recovered.