METHOD FOR DESULPHURATION, DENITROGENATION AND/OR DEAROMATIZATION OF A HYDROCARBON FEED ON A DOLLAR G(P) ELECTRON ACCEPTOR-BASED COMPLEXING ADSORBENT

摘要

The invention concerns a method for desulphuration, denitrogenation and/or dearomatization of a hydrocarbon feed containing sulphur compounds of the benzo-and/or dibenzothiophene type, nitrogen compounds of indole and/or carbazole type and polyaromatic compounds, comprising a step which consists in adsorbing the feed in an adsorption column containing an adsorbent including a pi electron acceptor based complexing agent; recovering a desulphurized, denitrogenated and/or dearomatizedand adsorption effluent A with and stopping the adsorption of the feed on the column. The column is regenerated in two steps: one first step which consists in washing a major part of hydrocarbons contained in the porous volume of the adsorbent and in recovering a first regeneration effluent B. Said washing is carried out either using a desorbent or a flushing liquid; a second step during which the desorbent is circulated in the column and a second regeneration effluent C is recovered containing the sulphur, nitrogen and/or polyaromatic compounds which have been desorbed. The invention is applicable to final desulphuration of a diesel fuel.