Patent ID: 8999141
Filing Date: 2015-04-07
Classification: C10G

Abstract:
1. A method of processing a hydrocarbonaceous feed stock comprising: directing a feed stream to a substantially continuous liquid-phase hydroprocessing zone to form a first effluent, the substantially continuous liquid-phase hydroprocessing zone having a first hydrogen requirement; directing at least a portion of the first effluent to a substantially three-phase hydroprocessing zone to form a second effluent, the substantially three-phase hydroprocessing zone having a second hydrogen requirement effective to maintain the substantially three-phase hydroprocessing zone in a substantially continuous gas phase throughout and to provide an excess amount of hydrogen in the second effluent; supplying a hydrogen stream from an external make-up hydrogen system to provide the second hydrogen requirement; and separating the excess hydrogen present in the second effluent from the substantially three-phase hydroprocessing zone as a flow of hydrogen, and directing the hydrogen flow to the substantially continuous liquid-phase hydroprocessing zone to provide a hydrogen supply for the first hydrogen requirement.