| 摘要 |
The invention relates to an alkylation process in which a feedstock (charge) comprising at least one isoparaffin and at least one olefin containing from 2 to 6 carbon atoms per molecule is treated in the presence of a solid alkylation catalyst, the said process comprising: a) the introduction and the operation of bringing into contact with the catalyst present in a reaction region R of the following compounds: (i) the said feedstock, preferably introduced at least at the inlet of the region R, (ii) a part of the liquid effluent described in b), introduced at least at the inlet of the region R and preferably entirely introduced at the inlet of the region R, and (iii) a part of the liquid effluent described in d), preferably introduced at least at the inlet of the region R, b) the recycling of a part of the liquid effluent exiting from the reaction region R towards the inlet of the said region R, c) the introduction of another part of the liquid effluent exiting from the reaction region R into an isobutane/normal-butane/alkylate S separation region, d) the recycling of the major part of the isobutane-enriched liquid effluent from the region S into the reaction region R, e) the production of an alkylate, as product, from the region S, and f) the production of normal-butane, as purge, from the region S. <IMAGE>
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