Ifp Energies Nouvelles

Ifp Bnergies Nouvelles

Helene Rodeschini

Arnaud Baudot

Serge Gonzalez

Jacques Vallet

Philibert Leflaive

Fabrice Giroudiere

Elsa Jolimaitre

Nicolas Boudet

Tom Frising

Jean Pierre Reyt

Process for the production of paraxylene from a C8 aromatic feedstock that comprises the following stages:

Process for separation of C8 aromatic compounds with limited recycling

This invention relates to the field of processes for membrane separation and applies in particular to the purification of C2 or C3 olefins. This process makes it possible more particularly to separate propylene from a mixture that contains other C3 hydrocarbons such as propane. The membranes that are used in the process according to this invention are vitreous polymer-based membranes whose pattern contains a bis-phenyl-9,9-fluorene group.

Process for membrane separation of an olefin that is contained in a hydrocarbon mixture

The invention relates to a process for membrane separation that makes it possible to separate linear hydrocarbons from branched hydrocarbons. The membrane that is used comprises a dense selective layer that consists of a polymer whose chemical structure contains at least one bis-phenyl-9,9-fluorene group.

Process for membrane separation of linear hydrocarbons within a hydrocarbon mixture

This invention describes a new hydrogen purification process that employs a combination of at least three membrane separation units. This process allows non-stationary operations and is particularly suitable for the production of hydrogen for the purpose of its use in a fuel cell.

Hydrogen purification process that uses a combination of membrane separation units

Growing community of inventors

Lyons, France

Helene Rodeschini