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. 13, 1984
Filed:
Nov. 12, 1981
Georges Kvasnikoff, Monein, FR;
Robert Voirin, Mourenx, FR;
Societe Nationale Elf Aquitaine (Production), Paris, FR;
Abstract
Improved process for the production of sulphur from a gas containing H.sub.2 S, SO.sub.2, H.sub.2 and/or CO, in which the gas is caused to pass through a CLAUS catalyst in a primary catalytic stage operating at between 200.degree. and 460.degree. C. in order to form sulphur, and thereafter the sulphur contained in the reaction mixture issuing from this stage is condensed through indirect heat exchange with water to produce steam. The improved process consists in constituting at least the final eighth of the catalyst volume in this stage by a composite mass formed from a refractory oxide on which is fixed a transition metal compound, for example Co and/or Mo, and in entering into contact the gas with this composite mass at between 300.degree. and 460.degree. C. in order to oxidize H.sub.2 and CO. The energy resulting from this oxidation is recovered in the form of a supplementary quantity of steam during the sulphur condensation.