Process for the selective oxidation of hydrogen sulphide

Details Process for the selective oxidation of hydrogen sulphide Process for the selective oxidation of hydrogen sulphide

C - Chemistry, Metallurgy

01

B

C01B 17/00 (2006.01) C01B 17/04 (2006.01)

Patent

CA 2540349

A process for the selective oxidation of hydrogen sulphide in a hydrogen sulphide containing feed gas to elemental sulphur, wherein the hydrogen sulphide containing feed gas (3), an inert liquid medium (5), and a molecular- Oxygen containing gas (4) are supplied to a reaction zone (1) comprising at least one catalytic zone (2) comprising an oxidation catalyst to form elemental sulphur and a gaseous stream depleted in hydrogen sulphide (8), in which process the oxidation catalyst. of each catalytic zone (2) is contacted with hydrogen sulphide and/or molecular-~oxygen in the presence of inert liquid medium at a temperature in the range of from 120 to 160 oC, under such conditions that the elemental sulphur formed is essentially in liquid form and is removed from the reaction zone with the inert liquid medium.

Procédé d'oxydation sélective sous forme de soufre élémentaire d'un sulfure d'hydrogène présent dans un gaz d'alimentation. Selon ce procédé, un gaz d'alimentation contenant du sulfure d'hydrogène¿ ?(3), un milieu liquide inerte (5) et un gaz renfermant de l'oxygène moléculaire (4) vont alimenter une zone de réaction (1) comprenant au moins une région catalytique (2) à catalyseur d'oxydation pour former du soufre élémentaire et un flux gazeux appauvri en sulfure d'hydrogène (8). Au cours de ce processus, le catalyseur d'oxydation de chaque région catalytique (2) est mis en contact avec du sulfure d'hydrogène et/ou de l'oxygène moléculaire en présence d'un milieu liquide inerte à une température comprise entre 120 et 160 ?o¿C, dans des conditions telles que du soufre élémentaire est formé essentiellement sous forme liquide est extrait de la zone de réaction avec le milieu liquide inerte.

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