Adsorption process for producing ultra low sulfur...

C - Chemistry – Metallurgy – 10 – G

Patent

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C10G 25/00 (2006.01) C10G 25/08 (2006.01) C10G 25/12 (2006.01) C10G 61/08 (2006.01) C10G 67/16 (2006.01) C10G 69/08 (2006.01)

Patent

CA 2374660

The instant invention is directed to a method for reducing the amount of sulfur in hydrocarbon streams comprising the steps of: (a) contacting a hydrocarbon stream comprising hydrocarbons and sulfur compounds with an adsorbent selective for adsorption of said sulfur compounds, under adsorption conditions capable of retaining said sulfur compounds on said adsorbent and obtaining an adsorption effluent comprising a desulfurized hydrocarbon stream, (b) collecting said desulfurized hydrocarbon stream, (c) desorbing said sulfur compounds from said adsorbent by passing a desorbent through said adsorbent under desorption conditions to obtain a desorption effluent comprising sulfur compounds and said desorbent, (d) treating said desorption effluent to remove said sulfur compounds from said desorption effluent and collecting a desulfurized desorbent effluent comprising desorbent.

La présente invention concerne un procédé de réduction de la quantité de soufre dans des flux d'hydrocarbure comprenant les étapes consistant (a) à mettre un flux d'hydrocarbure contenant des hydrocarbures et des composés soufrés en contact avec un adsorbant à sélectivité d'adsorption desdits composés soufrés, dans des conditions d'adsorption capables de retenir lesdits composés soufrés sur ledit adsorbant et à obtenir un effluent d'adsorption contenant un flux d'hydrocarbure désulfuré, (b) à collecter ledit flux d'hydrocarbure désulfuré, (c) à désorber lesdits composés soufrés dudit adsorbant par passage d'un désorbant à travers ledit adsorbant dans des conditions de désorption pour obtenir un effluent de désorption contenant des composés soufrés et ledit désorbant, (d) à traiter ledit effluent de désorption pour éliminer lesdits composés soufrés dudit effluent de désorption et à collecter un effluent de désorbant désulfuré contenant le désorbant.

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