Patent ID: 9546330
Date: 2017-01-17
CPC Classifications: C10G

Claim:
1. A method for upgrading a crude oil feed to reduce the content of undesired heteroatom compounds containing metals, sulfur and nitrogen, the method comprising: a. heating the crude oil feed and flashing the heated crude oil feed to produce a flashed straight distillate fraction and an atmospheric residue fraction; b. hydroprocessing the atmospheric residue fraction in an ebullated-bed reaction zone in the presence of hydrogen and an ebullated-bed reactor catalyst to produce an ebullated-bed reactor effluent stream, wherein make-up hydrogen is introduced as needed; c. separating the ebullated-bed reactor effluent stream into a hydroprocessed products stream containing hydrogen, a recycle oil stream and an unconverted residue stream, and recovering the unconverted residue stream; d. hydrotreating in a fixed bed hydroprocessing zone a combined stream of the hydroprocessed products stream containing hydrogen and the flashed straight run distillate fraction in the presence of a hydrotreating catalyst in a hydrotreater to produce a hydrotreated effluent, wherein hydrogen from the hydroprocessed products stream forms at least a portion of the requisite hydrogen for hydrotreating reactions; e. separating the hydrotreated effluents to produce a light gas stream and a hydrotreated distillate stream, and recovering the hydrotreated distillate stream; and f. purifying the light gas stream and recycling the purified light gas stream to the ebullated-bed reactor as a source of hydrogen gas for hydroprocessing.