Patent ID: 7794585

Claim:
A method of hydroprocessing a hydrocarbonaceous feed stock comprising: providing a feed stream including at least an admixture of the hydrocarbonaceous feed stock, a previously hydroprocessed liquid-phase hydrocarbonaceous stream, and hydrogen; the hydrogen of the feed stream provided by hydrogen from the previously hydroprocessed liquid-phase hydrocarbonaceous stream and added hydrogen, the added hydrogen provided in an amount effective to increase a hydrogen content of the feed stream while maintaining the feed stream in a substantially liquid-phase condition; directing the feed stream to a first substantially liquid-phase hydroprocessing zone to form a first effluent; admixing an amount of hydrogen in the first effluent, the admixed hydrogen provided in an amount effective to increase a hydrogen content of the first effluent while maintaining the first effluent in a substantially liquid-phase condition; directing the first effluent to a second substantially liquid-phase hydroprocessing zone to form a second effluent having at least a liquid component; recycling a portion of the liquid component from the second effluent to the feed stream to provide the previously hydroprocessed liquid-phase hydrocarbonaceous stream; and the first effluent being substantially undiluted with another hydrocarbon stream.