Heavy feedstock upgrading process based on deasphalting and...

C - Chemistry – Metallurgy – 10 – G

Patent

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Details

C10G 65/12 (2006.01) C10G 65/04 (2006.01) C10G 67/04 (2006.01) C10G 69/04 (2006.01)

Patent

CA 2464796

The invention relates to a method for treating a hydrocarbons charge comprising the following stages, in which: (a) the charge is brought into contact with a solvent in order to obtain a deasphalted effluent having a content of asphaltenes below 3000 ppm by weight, ( b) the deasphalted effluent is cracked in the presence of hydrogen and a hydrocracking catalyst, in a bubbling-bed reactor, so as to convert at least 50 wt. % of the fraction of the deasphalted effluent boiling above 500° C. to compounds having a boiling point below 500° C., (c) the effluent from stage (b) is fractionated to recover gasolines, kerosene, gas oils and a first residue, and (d) at least a portion of this first residue is cracked so as to obtain an effluent comprising gasolines, kerosene, gas oils and a second residue.

L'invention porte sur un procédé de traitement d'une charge d'hydrocarbures comprenant les étapes suivantes, dans lesquelles: a) on met en contact la charge avec un solvant de manière à obtenir un effluent désalphalté ayant une teneur en asphaltènes inférieure à 3000 ppm poids, b) on craque l'effluent désalphalté en présence d'hydrogène et d'un catalyseur d'hydrocraquage, dans un réacteur à lit bouillonnant, de manière à convertir au moins 50 % en poids de la fraction de l'effluent désalphalté bouillant au dessus de 500°C en composés ayant un point d'ébullition inférieur à 500°C, c) on fractionne l'effluent de l'étape b) pour récupérer des essences, du kérosène, des gazoles et un premier résidu, et d) on craque au moins une partie de ce premier résidu de manière à obtenir un effluent comprenant des essences, du kérosène, des gazoles et un second résidu.

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