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:
Apr. 16, 1996
Filed:
Aug. 22, 1994
Elf Aquitaine Production, Courbevoie, FR;
Abstract
A process is provided for the production of sulphur from at least one sour gas containing H.sub.2 S and a gaseous or liquid fuel effluent, of the type comprising a thermal reaction step, wherein the thermal reaction step is conducted by performing the combustion of the gaseous or liquid fuel effluent in a first zone of the thermal reaction stage with a quantity of a gas containing free oxygen in excess in relation to the theoretical quantity needed for a complete combustion of the fuel effluent, the excess being smaller than the theoretical proportion of gas containing free oxygen needed to oxidize to SO.sub.2 approximately one third of the H.sub.2 S of the total flow of sour gas into the combustion fumes of the fuel effluent which are present in the first zone of the thermal reaction stage, by burning incompletely a second stream of sour gas in a second zone of the thermal reaction stage, which receives the gaseous products from the first zone, with a controlled quantity of gas containing free oxygen, such that the H.sub.2 S:SO.sub.2 molar ratio in the gases originating from the catalytic reaction step has a predetermined value, and by adjusting the flow rates of the first and second sour gas streams so that the temperature obtained during the incomplete combustion of the second sour gas stream in the second zone of the thermal reaction stage has a value higher than 850.degree. C.