Electrochemical treatment of heavy oil streams followed by...

Details Electrochemical treatment of heavy oil streams followed by... Electrochemical treatment of heavy oil streams followed by...

C - Chemistry, Metallurgy

10

G

C10G 32/02 (2006.01) C10G 19/02 (2006.01) C10G 21/06 (2006.01)

Patent

CA 2708395

This invention relates to the electrochemical conversion of dibenzothiophene type molecules of petroleum feedstreams to mercaptans that can then be removed, in one embodiment, by caustic extraction. In another embodiment, the mercaptans can be thermally decomposed, removing sulfur as hydrogen sulfide. The conversion of dibenzothiophenes to mercaptans is performed by electrochemical means without the required addition of hydrogen and in the substantial absence of water.

La présente invention concerne la conversion électrochimique de molécules de type dibenzothiophène des courants d'alimentation de pétrole en mercaptans qui peuvent ensuite être éliminés, dans un mode de réalisation, par une extraction caustique. Dans un autre mode de réalisation, les mercaptans peuvent être décomposés thermiquement, le soufre étant éliminé sous forme de sulfure d'hydrogène. La conversion de dibenzothiophènes en mercaptans est effectuée par des moyens électrochimiques sans qu'il soit nécessaire d'ajouter d'hydrogène et essentiellement en l'absence d'eau.

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