Electrodesulfurization of heavy oils using a divided...

C - Chemistry – Metallurgy – 10 – G

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C10G 67/00 (2006.01) C10G 32/02 (2006.01)

Patent

CA 2709692

The electrodesulfurization of heavy oil feedstreams is accomplished wherein a heavy oil feedstreams, along with hydrogen, is passed the cathode side of an electrochemical cell wherein the organically bound sulfur compounds in the heavy oil are reduced and the sulfur is released as hydrogen sulfide. The hydrogen sulfide can be fed directly into the anode side of the electrochemical cell to produce sulfur and hydrogen or it can be passed to an oxidation zone containing an aqueous solution of an oxidized metal salt.

L'invention porte sur l'électrodésulfuration de courants d'alimentation d'huile lourde consistant à faire passer un courant d'alimentation d'huile lourde, conjointement avec de l'hydrogène, du côté cathode d'une cellule électrochimique, les composés du soufre organiquement liés présents dans l'huile lourde étant réduits et le soufre étant libéré sous forme de sulfure d'hydrogène. Le sulfure d'hydrogène peut être introduit directement du côté anode de la cellule électrochimique pour produire du soufre et de l'hydrogène ou on peut le faire passer vers une zone d'oxydation contenant une solution aqueuse d'un sel de métal oxydé.

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