Ifp Energies Nouvelles

Pascal Etienne

Damien Leinekugel Le Cocq

Catherine Laroche

Philibert Leflaive

Alexandre Vonner

Jean-Philippe Heraud

Process for the production of olefins and of middle distillates from a paraffinic feedstock, in which:

Process for the production of olefins and of middle distillates from a hydrocarbon effluent resulting from the fischer-tropsch synthesis

The present invention describes a process for the simulated moving bed separation of xylenes which can be used for the treatment of paraxylene-rich feeds (more than 25% by weight of paraxylene), in which the operating conditions are optimized by means of a specific relationship between the cycle time and the desorbant flow rate.

Simulated moving bed xylenes separation process, and optimized operating conditions for units treating paraxylene-rich feeds

The present invention describes a process for the simulated moving bed separation of xylenes, in which the operating conditions are optimized by means of a specific relationship between the cycle time and the flow rate of the desorbant.

Process for the simulated moving bed separation of xylenes, and optimized operating conditions

The present invention describes a process for the separation of xylenes in simulated counter-current utilising at least one adsorber with a limited cumulated total height (Hcu) of adsorbent and a superficial velocity (Vsl) of less than 2 cm/s.

Process and apparatus for simulated counter-current chromatographic separation for high-productivity production of paraxylene

This invention describes a process for separation of xylenes for the purpose of the production of high-purity metaxylene, a simulated countercurrent process using at least one adsorber with a limited cumulative total level (Hcu) of adsorbent at a surface velocity (Vsl) that is less than 2 cm/s.

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Estrablin, France

Pascal Etienne