| abstract |
The invention pertains to a hydroprocessing catalyst suitable for the conversion of heavy hydrocarbon oils, which comprises 7-20wt.% of Group VI metal, Calculated as trioxide, and 0.5-6 wt.% of Group VIII metal, calculated as oxide, on a carrier comprising alumina, the catalyst having a surface area of 100-180 m2/g, a total pore volume of 0.55 ml/g or more, a %PV(>200 .ANG. d) of at least 50%, a %PV(>1,000 .ANG. d) of at least 5%, a %PV(100-1,200 .ANG. d) of at least 85%, a %PV(> 4,000 .ANG. d) of 0-2%, and a %PV(> 10,000 .ANG. d) of 0-1%. The catalyst of the present invention shows improved metals and asphaltene removal, combined with appropriate sulfur, nitrogen, and Conradson carbon removal. Additionally, the catalyst shows a decrease in sediment formation and an improved conversion in ebullating bed operations. In fixed bed operation, the catalyst produces product with an improved storage stability. The invention also pertains to a process for hydroprocessing heavy hydrocarbon feeds with the catalyst according to the invention in fixed bed or ebullating bed operation. |