Production of base for benzene-free motor fuel exhibiting a high octane number

摘要

Reduction in the benzene content in the gasoline pool, in which hydrogenation is carried out of the feedstock characterised by a weight composition included within the following ranges: - between 40 and 80 % of paraffins - between 0.5 and 7 % of naphthenes - between 6 and 45 % of aromatics and a maximum distillation temperature of between 70 and 90@C, then an isomerisation of the said feedstock is carried out, the process being characterised in that the said feedstock has been mixed with a C5-C6 direct distillation cut at at least one of the following times: - just before the hydrogenation, - just before the isomerisation and after the hydrogenation of the said feedstock. <IMAGE>