Process for reducing total sulphur content in gases...

B - Operations – Transporting – 01 – D

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B01D 53/52 (2006.01) B01D 53/86 (2006.01)

Patent

CA 2263579

Process for reducing the total sulphur content of a gas containing hydrogen sulphide and other sulphur components, which process comprises: (a) contacting the gas with a reducing gas in the presence of a hydrogenation catalyst comprising at least one metal component selected from Groups VIB and VIII supported on a carrier comprising amorphous silica-alumina, (b) contacting at least part of the gas obtained from step (a) with a hydrolysis catalyst capable of catalysing the hydrolysis of carbonyl sulphide to form hydrogen sulphide, and (c) removing hydrogen sulphide from the gas obtained from step (b), thus obtaining a product gas having a reduced total sulphur content.

L'invention a pour objet un procédé pour réduire la teneur totale en soufre d'un gas contenant du sulfure d'hydrogène et d'autres composants de soufre. Ce procédé consiste à (a) mettre en contact le gaz avec un gaz réducteur en présence d'un catalyseur d'hydrogénation comprenant au moins un composant métallique sélectionné parmi les groupes VIB et VIII supportés sur un vecteur comprenant du dioxyde de silicium-oxyde d'aluminium amorphe, (b) mettre au moins une partie du gaz obtenu au cours de l'étape (a) en contact avec un catalyseur d'hydrolyse permettant de catalyser l'hydrolyse du sulfure de carbonyle pour former du sulfure d'hydrogène, et (c) retirer le sulfure d'hydrogène du gaz obtenu du gaz obtenu au cours de l'étape (b). On obtient ainsi un gaz dont la teneur totale en soufre est réduite.

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