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:
Mar. 29, 2005
Filed:
Jul. 11, 2001
Fabrice Lecomte, rue Henri Dunant, FR;
Christian Streicher, rue Masséna, FR;
Cécile Barrere-tricca, avenue du Trône, FR;
Fabrice Lecomte, rue Henri Dunant, FR;
Christian Streicher, rue Masséna, FR;
Cécile Barrere-Tricca, avenue du Trône, FR;
Institut Francais du Petrole, Rueil-Malmaison cedex, FR;
Abstract
A method for processing a gas containing at least hydrogen sulfide (HS) and at least sulfur dioxide (SO), includes the steps of contacting the gas with a liquid solvent containing at least one catalyst in a contacting stage, recovering gaseous effluent substantially containing no hydrogen sulfide and no sulfur dioxide from the contacting stage, and separating liquid sulfur from liquid solvent in a decantation zone downstream of the contacting stage. In order to remove by-products resulting from degradation of the catalyst, a liquid fraction F containing at least solvent, catalyst, sulfur and the solid by-products resulting from degradation of the catalyst is extracted from after the contacting stage. The liquid fraction F is sent to a processing stage distinct from the contacting stage where the liquid fraction F is heated to a temperature at least partially crystallizing the by-products, and the at least partially crystallized by-products separated from the rest of the liquid fraction F containing at least solvent. At least a stream Fcomprising solvent, catalyst and sulfur and substantially free of the by-products and a stream Fmostly comprising the by-products are recovered.