Process for converting hydrocarbons by treatment in a distillation zone comprising extracting a hydrocarbon cut as a side stream, associated with reaction zone, and its use for hydrogenating benzene

摘要

Hydrocarbon charge is treated in a distillation zone associated with a reaction zone that is partially or totally external and comprises at least one catalytic bed for catalytic conversion of at least a part of at least one hydrocarbon in the presence of a catalyst and a flow of gaseous hydrogen. Potentially harmful levels of benzene and lower olefin contents can be removed. The reaction zone charge is withdrawn at a height of at least one discharge level and represents at least part of the liquid passing through the distillation zone. At least part of the effluent of the reaction zone is reintroduced into the distillation zone at a height of at least one reintroduction level so as to ensure continuous distillation. Effluent fluid is extracted from the distillation zone at a height of at least one level of extraction. At least part of the effluent is at least partially treated in a gas-liquid lateral separation zone. The separated gaseous effluent is at least partially reintroduced into the distillation zone, and the liquid effluent is at least partially recovered as an intermediate cut.