Hydrocracking Process

Abstract: The invention relates to a process for hydrocracking a petroleum feedstock (1) comprising: - (a) a step of hydrocracking the feedstock in order to obtain a hydrocracked effluent; - (b) a step of liquid/gas separation of the effluent in order to obtain a gaseous effluent (5) and a liquid effluent (9); - (c) a step of fractionating said liquid effluent (9) at a pressure P1, producing a first distillate (13,14) and a first residue (15), - (d) a step of recycling a first portion (18) of said first residue (15) to the hydrocracking step and/or at least one of the hydrocracking steps, - (e) a step of rectifying a second portion (20) of the first residue (15) at a pressure P2 lower than or equal to the pressure P1, in order to obtain a secondary distillate (23), a secondary residue (16) and a vapour stream (22), - (f) a step of purging a portion of the secondary residue (16), - (g) a step of recycling all or part of said secondary distillate (23) to the hydrocracking step or to at least one of the hydrocracking steps. Figure for the abstract: Figure 2

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