The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 15, 2011
Filed:
Jan. 15, 2008
Andreas Wölfert, Bad Rappenau, DE;
Herald Jachow, Bensheim, DE;
Heinz Drieβ, Ludwigshafen, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Hydrogen sulfide HS is prepared from a crude gas stream containing HS and polysulfanes (HS). 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 HS. This process may be accomplished in an apparatus including a reactor for reacting sulfur and hydrogen, a cooler for receiving and cooling an HS-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.