Patent ID: 7510646

Claim:
A process for the production of hydrocarbon blends with a high octane number by the hydrogenation of hydrocarbon blends, containing branched C 8 , C 12 and C 16 olefinic cuts, characterized by sending said blends, as such or fractionated into two streams, one substantially consisting of the branched C 8 olefinic cut, the other substantially containing the branched C 12 and C 16 olefinic cuts, to a single hydrogenation zone or to two hydrogenation zones in parallel, respectively, only the stream substantially consisting of saturated C 8 hydrocarbons, obtained by the fractionation of the stream produced by the single hydrogenation zone or obtained by the hydrogenation zone fed by the fractionated stream substantially consisting of the branched C 8 olefinic cut, being at least partly recycled to the single hydrogenation zone or to the hydrogenation zone fed by the fractionated stream substantially consisting of the branched C 8 olefinic cut, and to said hydrogenation zone fed by the fractionated stream substantially containing the branched C 12 and C 16 olefinic cuts.