Countercurrent desulfurization process for refractory...

C - Chemistry – Metallurgy – 10 – G

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C10G 25/00 (2006.01) C10G 45/00 (2006.01) C10G 45/04 (2006.01) C10G 45/60 (2006.01) C10G 65/04 (2006.01) C10G 67/06 (2006.01)

Patent

CA 2382997

A process for the hydrodesulfurization (HDS) of the multiple condensed ring heterocyclic organosulfur compounds present in petroleum and chemical streams. The stream is passed through at least one reaction zone countercurrent to the flow of a hydrogen-containing treat gas, and through at least one sorbent zone. The reaction zone contains a bed of Group VIII metal-containing hydrodesulfurization catalyst and the sorbent zone contains a bed of hydrogen sulfide sorbent material.

L'invention concerne un processus d'hydrodésulfuration (HDS) de multiples composés organo-sulfureux à noyau hétérocycliques condensés, présents dans le pétrole et les courants chimiques. Le courant passe par au moins une zone de réaction à contre-courant par rapport à un flux gazeux de traitement contenant de l'hydrogène, et par au moins une zone de sorbant. La zone de réaction contient un lit de catalyseur d'hydrodésulfuration contenant un métal du groupe VIII et la zone de sorbant contient un lit de matière sorbante d'hydrogène sulfuré.

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