Patent ID: 9080113
Filing Date: 2015-07-14
Classification: B01J,C10G

Abstract:
1. An integrated process for upgrading crude shale-derived oils produced by oil shale retorting or by in situ extraction or by mixtures thereof that includes the following steps: a. fractionating the whole shale oil into a first fraction comprising naphtha, kerosene and diesel and an atmospheric bottoms fraction comprising gas oil and residuum; b. contacting the first fraction and hydrogen in a first-stage hydroprocessing reactor containing a hydrogenation catalyst to saturate diolefins contained in the first fraction and recovering an effluent from the first-stage hydroprocessing reactor; c. feeding the effluent from the first-stage hydroprocessing reactor of step (b) without phase separation to a second-stage hydroprocessing reactor operated in an upflow mode and containing catalysts to perform hydrodemetallization and saturation of mono-olefins in the effluent from the first-stage hydroprocessing reactor and recovering an effluent from the second-stage hydroprocessing reactor; d. feeding the effluent from the second-stage hydroprocessing reactor of step (c) without phase separation to a third-stage hydroprocessing reactor having one or more beds of catalyst to perform hydrodenitrogenation, hydrodesulfurization, hydrodeoxygenation, and aromatics saturation of the effluent from the second-stage hydroprocessing reactor and recovering an effluent from the third-stage hydroprocessing reactor; e. feeding the atmospheric bottoms fraction and hydrogen to a fourth-stage hydroprocessing reactor operated in an upflow mode and containing catalysts to perform hydrodemetallization of the atmospheric bottoms fraction and recovering an effluent from the fourth-stage reactor; f. feeding the effluent from the fourth-stage hydroprocessing reactor of step (e) without phase separation to a fifth-stage hydroprocessing reactor having one or more beds of catalyst each containing a catalyst to perform one or more of hydrotreating and hydrocracking of the effluent from the fourth-stage hydroprocessing reactor and recovering an effluent from the fifth-stage hydroprocessing reactor; g. processing the effluents from the fifth-stage hydroprocessing reactor of step (f) and the third-stage hydroprocessing reactor of step (d) in a separation train to recover two or more hydrocarbon fractions.