Process for hydrocracking hydrocarbons

Details Process for hydrocracking hydrocarbons Process for hydrocracking hydrocarbons

C - Chemistry, Metallurgy

10

G

196/119

C10G 47/00 (2006.01)

Patent

CA 1176198

Abstract A process for hydrocracking hydrocarbons for residuum conversion in the presence of a fluidized catalyst, which is characterized by extracting at least part of the fluidized catalyst from the reaction system as a spent catalyst,subjecting at least part of the spent catalyst to hydrotreatment for solubilizing toluene-insoluble carbonaceous materials deposited on the catalyst thereby regenerating the spent catalyst, and recycling the regenerated catalyst to the hydrocracking step. According to this process, the spent catalyst is recycled to the hydrocracking step in a highly activated state after the regenerative hydrotreatment, so that it becomes possible to suppress the coke production within the reactor to a considerable degree, to maintain the coke level of the catalyst below a predetermined value and to preclude the contamination of the reactor walls with coke. The process of the invention which regenerates the spent catalyst by a hydrotreatment, in contrast to the conventional catalyst regeneration by oxidative roasting, eliminates all the difficult problems as encountered in the oxidative roasting methods.

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