Process for the production of hydrocarbon blends with a high...

C - Chemistry – Metallurgy – 07 – C

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C07C 5/03 (2006.01) C07C 2/06 (2006.01)

Patent

CA 2454333

Process for the production of hydrocarbon blends with a high octane number by the hydrogenation of hydrocarbon blends, containing branched C8, C12 and C16 olefinic cuts, characterized by sending said blends, as such or fractionated into two streams, one substantially containing the branched C8 olefinic cut, the other substantially containing the branched C12 and C16 olefinic cuts, to a single hydrogenation zone or to two hydrogenation zones in parallel, respectively, only the stream substantially containing saturated C8 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 sub-stantially containing the branched C8 olefinic cut, being at least partly recycled to the single hydrogenation zone or to the hydrogenation zone fed by the fractionated stream substantially containing the branched C8 olefinic cut, and the hydrocarbon blend with a high octane number, obtained by the fractionation of the stream produced from the single hydrogenation zone or obtained from the hydrogenation zone, being fed by the fractionated stream substantially containing the branched C12 and C16 olefinic cuts.

Procédé pour la production de mélanges d'hydrocarbures à taux d'octane élevé par hydrogénation de mélanges d'hydrocarbures renfermant des fractions d'oléfines ramifiées en C8, C12 et C16, consistant à acheminer les mélanges en question comme tels ou séparés en deux flux, l'un contenant principalement la fraction d'oléfines ramifiées en C8, l'autre, principalement les fractions d'oléfines ramifiées en C12 et C16, vers une zone d'hydrogénation unique ou deux zones d'hydrogénation en parallèle, respectivement, seul le flux renfermant principalement les hydrocarbures saturés en C8, obtenus par fractionnement du flux produit dans la zone d'hydrogénation unique ou par la zone d'hydrogénation alimentée par le flux fractionné renfermant principalement la fraction d'oléfines ramifiées en C8, étant en partie recyclé vers la zone d'hydrogénation unique ou la zone d'hydrogénation alimentée par le flux fractionné renfermant principalement la fraction d'oléfines ramifiées en C8, le mélange d'hydrocarbures à taux d'octane élevé issu de la zone d'hydrogénation unique ou de la zone d'hydrogénation étant alimenté par le flux fractionné renfermant principalement la fraction d'oléfines ramifiées en C12 et C16.

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