Patent ID: 7161052

Claim:
A process for the valorization of a liquid charge of hydrocarbons and for reducing the vapor pressure of said charge comprising the following steps: a) the separation from said charge of hydrocarbons of a fraction (O1) at least 30% by weight of compounds containing 5 carbon atoms, including at least 2% by weight of pentenes, b) a placing of said fraction (O1) in contact with a cut of hydrocarbons (O2) at least partly comprising hydrocarbons having a number of carbon atoms between 6 and 10, including at least 2% by weight of olefins, in the presence of at least one catalyst promoting the reactions of dimerization and alkylation of at least a portion of resultant hydrocarbons present in the mixture originating from said placing in contact. c) a separation of the effluents originating from step b) into at least two cuts: a gasoline cut (α) the upper distillation point of which is less than 100° C. and comprising most of the hydrocarbons that have not reacted and a kerosene cut (β) having a distillation range between 100° C. and 300° C. comprising most of the resultant products originating from the alkylation and dimerization reactions.