Heavy feed hpc process using a mixture of catalysts

Details Heavy feed hpc process using a mixture of catalysts Heavy feed hpc process using a mixture of catalysts

B - Operations, Transporting

01

J

B01J 23/24 (2006.01) B01J 35/10 (2006.01) C10G 49/04 (2006.01)

Patent

CA 2508605

The present invention pertains to a process for the hydroprocessing of heavy hydrocarbon feeds, preferably in an ebullating bed process, by contacting the feed with a mixture of two hydroprocessing catalysts meeting specified pore size distribution requirements. More in particular, catalyst I has at least 50% of its total pore volume in pores with a diameter of at least 20 nm (200 .ANG.), and 10-30% of the total pore volume in pores with a diameter of at least 200 nm (2000 .ANG.), while catalyst II has at least 75% of the total pore volume in pores with a diameter of 10-120 nm (1001200 .ANG.), 0-2% of the total pore volume in pores with a diameter of at least 400 nm (4000 .ANG.), and 0-1 % of the total pore volume in pores with a diameter of at least 1000 nm (10000 .ANG.). The process combines high contaminant removal with high conversion, low sediment formation, and high process flexibility.

L'invention concerne un procédé d'hydrotraitement de charges d'hydrocarbures lourds, de préférence en réacteur à combustible en suspension, par contact entre la charge et un mélange de deux catalyseurs d'hydrotraitement qui satisfont des conditions spécifiées relatives à la distribution de la taille des pores. Plus précisément, le catalyseur I comporte au moins 50 % du volume total de pores en pores ayant un diamètre d'au moins 20 nm (200 .ANG.), et de 10 à 30 % du volume total de pores en pores ayant un diamètre d'au moins 200 nm (2000 .ANG.), tandis que le catalyseur II comporte au moins 75 % du volume total de pores en pores ayant un diamètre compris entre 10 et 120 nm (100-1200 .ANG.), de 0 à 2 % du volume total de pores en pores ayant un diamètre d'au moins 400 nm (4000 .ANG.), et de 0 à 1 % du volume total de pores en pores ayant un diamètre d'au moins 1000 nm (10000 .ANG.). Le procédé décrit combine un degré élevé d'élimination des contaminants, un degré de conversion élevé, un faible degré de formation de sédiments, et un degré élevé de flexibilité de traitement.

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