| abstract |
The invention relates to a process for treating a feedstock consisting mainly of hydrocarbons comprising at least 5 carbon atoms per molecule and comprising at least one unsaturated compound comprising at most six carbon atoms per molecule including benzene, such as said feed is treated in a distillation zone, comprising a depletion zone and a rectification zone, associated with a hydrogenation reaction zone, comprising at least one catalytic bed, in which the hydrogenation of at least at least a portion of the unsaturated compounds comprising at most six carbon atoms per molecule and contained in the charge, the charge of said reaction zone being sampled at the level of a sampling level and representing at least part of the liquid flowing in the zone distillation, the effluent from the reaction zone being at least partially reintroduced into the distillation zone, so as to ensure the continuity of the distillation and so as to leave at the head of the distillation zone an effluent very depleted in unsaturated compounds comprising at most 6 carbon atoms per molecule, and at the bottom of the distillation zone an effluent depleted in unsaturated compounds comprising at most six carbon atoms per molecule, said process being characterized in that the hydrogenation zone is at least partially external to the distillation zone. |