Organosulfur oxidation process

Details Organosulfur oxidation process Organosulfur oxidation process

C - Chemistry, Metallurgy

10

G

C10G 53/14 (2006.01)

Patent

CA 2513862

This invention is a method of purifying fuel streams containing organonitrogen and organosulfur impurities. The fuel stream is first treated to extract organonitrogen impurities so that the nitrogen content of the fuel stream is reduced by at least 50 percent. After separation and recovery of the nitrogen- depleted fuel stream, the organosulfur impurities in the fuel stream are then oxidized with an organic hydroperoxide in the presence of a titanium- containing silicon oxide catalyst. The resulting sulfones may be more readily removed from the fuel stream than the non-oxidized organosulfur impurities.

Cette invention concerne un procédé de purification de flux de carburant contenant des impuretés d'organoazote et d'organosoufre. Le flux de carburant est d'abord traité afin que les impuretés d'organoazote soient extraites de façon que la teneur en azote du flux de carburant soit réduite d'au moins 50 %. Après la séparation et la récupération du flux de carburant dépourvu d'azote, les impuretés d'organosoufre contenues dans le flux de carburant sont ensuite oxydées à l'aide d'un hydroperoxyde organique en présence d'un catalyseur d'oxyde de silicium contenant du titane. Les sulfones ainsi obtenues peuvent être éliminées plus facilement du flux de carburant que les impuretés d'organosoufre non oxydé.

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