C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
C10G 65/04 (2006.01) C10G 70/00 (2006.01)
Patent
CA 2580295
This invention relates to a process and an installation for treatment of a heavy petroleum feedstock, of which at least 80% by weight has a boiling point of greater than 340°C, whereby the process comprises the following stages: (a) hydroconversion in a boiling-bed reactor operating with a rising flow of liquid and gas, conversion in % by weight of the fraction having a boiling point of greater than 540°C being from 10 to 98% by weight; (b) separation of the effluent obtained from stage (a) into a gas containing hydrogen and H2S, a fraction comprising the gas oil and optionally a fraction that is heavier than gas oil and a naphtha fraction; c) hydrotreatment by contact with at least one catalyst of at least the fraction comprising the gas oil obtained in stage (b); d) separation of the effluent obtained at the end of stage (c) into a gas containing hydrogen and at least one gas oil fraction having a sulfur content of less than 50 ppm, preferably less than 20 ppm, and more preferably less than 10 ppm, the hydroconversion stage (a) being conducted at a pressure P1 and the hydrotreatment stage (c) being conducted at a pressure P2, the difference .DELTA.P = P1- P2 being at least 3 MPa, hydrogen supply for the hydroconversion (a) and hydrotreatment (c) stages being ensured by a single compression system with n stages.
Duddy John E.
Gragnani Andrea
Wisdom Lawrence
Ifp
Robic
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