| abstract |
The invention relates to a process for synthesizing hydrogen from a feed (1) comprising at least one naphthene, such that the average boiling point of said feed is substantially less than or equal to the average boiling point of the mixture. of aromatics which will result therefrom after dehydrogenation, characterized in that the operation is carried out in a distillation zone (2), associated with a dehydrogenation reaction zone, comprising at least one catalytic bed (3), in which the reaction is carried out. dehydrogenation of at least a portion of said naphthene contained in the feed, in the presence of a dehydrogenation catalyst, the feed of the reaction zone being taken up to at least one sampling level (16) and representing at least one part of the liquid flowing in the distillation zone, the effluent from the reaction zone being at least partly reintroduced (15) into the distillation zone, so as to ensure the continuity of the distillation, and so as to exit fina At the top of the distillation zone an effluent (12) comprising mainly hydrogen and at the bottom of the distillation zone an effluent (7) mainly comprising said dehydrogenated naphthene. |