Institut Francais Du Pe'trole

Elf France

Henri Bourgognon

Bernard Torck

Jerome Weill

Pierre Amigues

Claude Gueguen

Michel Llinares

The invention concerns a process for upgrading olefinic gasolines containing C.sub.5 hydrocarbons, but free of C.sub.4 hydrocarbons, by etherification. It is characterized in that the tertiary olefins of the charge are reacted (1 and 2) with methanol; the reaction effluent being then extracted (3) with water, in order to separate an aqueous phase containing the major part of the unreacted methanol from a hydrocarbon phase containing the major part of the formed ethers. The aqueous phase is then introduced in a distillation zone (4) where water is separated from methanol and recycled to the extraction zone (3), whereas methanol is recycled to the etherification zone (1 and 2).

Growing community of inventors

Tassin la Demi Lune, France

Henri Bourgognon