Method and device for continuous production of hydrogen sulphide

US7887777B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Andreas Wölfert · Bad Rappenau, DE
• Herald Jachow · Bensheim, DE
• Heinz Drieβ · Ludwigshafen, DE

Key dates

• Filing date: Jan 15, 2008
• Grant date: Feb 15, 2011
• Expiry date: Jan 15, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01B17/162
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Hydrogen sulfide H2S is prepared from a crude gas stream containing H2S and polysulfanes (H2Sx). The crude gas stream is passed at temperatures of from 114 to 165° C. through catalytically active material present in a vessel, and sulfur is collected in the bottom of the vessel and recycled to the preparation of H2S. This process may be accomplished in an apparatus including a reactor for reacting sulfur and hydrogen, a cooler for receiving and cooling an H2S-containing crude gas stream passed out of the reactor to between 114 to 165° C., a vessel coupled to the cooler, the vessel including catalytically active material and a bottom for collecting sulfur obtained from the crude gas stream, and a line which is connected to the bottom of the vessel and opens into the cooler or into the reactor, for recycling sulfur.