Catalytic system and process for the hydroconversion of...

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B01J 23/28 (2006.01) B01J 23/883 (2006.01) B01J 29/70 (2006.01) C10G 45/04 (2006.01)

Patent

CA 2726904

Catalytic system which can be used in processes for the hydroconversion of heavy oils by means of hydrotreatment in slurry phase, characterized in that it comprises: a catalyst, having the function of hydrogenating agent, containing MoS2 or WS2 or mixtures thereof in lamellar form or an oil-soluble precursor thereof; a co- catalyst, having nanometric or micronic particle-sizes, selected from cracking and/or denitrogenation catalysts. The co-catalyst preferably consists of zeolites having small-sized crystals and with a low aggregation degree between the primary particles, and/or oxides or sulfides or precursors of sulfides of Ni and/or Co in a mixture with Mo and/or W.

La présente invention concerne un système catalytique qui peut être utilisé dans des procédés d'hydroconversion de pétroles lourds par hydrotraitement en phase boueuse, caractérisé en ce qu'il comprend : un catalyseur servant d'agent d'hydrogénation et contenant du MoS2 ou du WS2 ou des mélanges de ceux-ci sous forme lamellaire ou, encore, un précurseur oléosoluble de ceux-ci; un cocatalyseur, présentant une taille des particules de l'ordre du nanomètre ou du micron et choisi parmi les catalyseurs de craquage et/ou de dénitrogénation. Le cocatalyseur est, de préférence, constitué de zéolites à petits cristaux et présentant un faible degré d'agrégation entre les particules primaires, et/ou d'oxydes ou de sulfures ou de précurseurs de sulfures de Ni et/ou de Co en mélange avec du Mo et/ou du W.

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