Patent ID: 6096191
Filing Date: 2000-08-01
Classification: C10G

Abstract:
A process for hydrocracking a hydrocarbonaceous feedstock to produce lower boiling hydrocarbonaceous compounds which process comprises:(a) contacting said hydrocarbonaceous feedstock, a liquid recycle stream having a temperature greater than about 500.degree. F. and saturated with hydrogen, and added hydrogen with a metal promoted hydrocracking catalyst in a hydrocracking zone at an elevated temperature in the range from about 450.degree. F. (232.degree. C.) to about 875.degree. F. (468.degree. C.) and a pressure in the range from about 500 psig (3448 kPa gauge) to about 3000 psig (20685 kPa gauge) sufficient to obtain a substantial conversion to lower boiling hydrocarbons;(b) stripping the uncooled hydrocarbon effluent from said hydrocracking zone in a hot, high pressure stripping zone maintained at essentially the same pressure as said hydrocracking zone and a temperature in the range from about 450.degree. F. to about 875.degree. F. with a first hydrogen-rich gaseous stream to produce a first gaseous hydrocarbonaceous stream and a first liquid hydrocarbonaceous stream;(c) condensing at least a portion of said first gaseous hydrocarbonaceous stream and separating the same into a second liquid hydrocarbonaceous stream and a second hydrogen-rich gaseous stream;(d) recycling at least a portion of said first liquid hydrocarbonaceous stream to supply at least a portion of said liquid recycle stream in step (a);(e) recycling at least a portion of said second hydrogen-rich gaseous stream from step (c) to supply at least a portion of said added hydrogen in step (a) and at least a portion of said first hydrogen-rich gaseous stream in step (b); and(f) recovering at least a portion of said second liquid hydrocarbonaceous stream.