Axens

Ifp Energies Nouvelles

Institut Francais Du Pe'trole

Pierre-Yves Martin

Jerome Pigourier

Isabelle Prevost

Laurent Watripont

Laurent Bournay

Alexandre Rojey

Vincent Coupard

Alexandre Pagot

Fabian Lambert

Jean-Alain Chodorge

B&eacute;atrice Fischer

Julien Gornay

Joana Fernandes

Yann Lepine

Jérôme Pigourier

Christophe Pierre

Yves Scharff

Arnaud Cotte

Francois Sala

Daniel-Jean Vinel

Jérôme M Pigourier

François Sala

The present invention relates to a process for producing high-purity para-xylene, comprising a single step of separation by adsorption in an SMB, with a subsequent step of separation by distillation in a first three-fraction distillation column producing at least two raffinates and optionally of two isomerization steps, making it possible to improve the overall para-xylene yield of the aromatic loop and to minimize the economic impact.

Process for producing para-xylene using a step in a simulated moving bed and a step of fractionation via a three-fraction column

The present invention describes a type of inclined bed reactor which permits a small quantity of catalyst to be employed. Application of the reactor to a regenerative reforming process.

Inclined bed reactor permitting a small quantity of catalyst to be employed

The present invention describes a process for the isomerization of a light naphtha with a view to forming high octane number gasolines, said process using a deisopentanizer and a deisohexanizer which are thermally integrated in a manner such as to reduce the consumption of the high temperature utilities employed in the process.

Naphtha isomerization process comprising two thermally integrated steps

The present invention describes a process for the production of high octane number gasoline by isomerization of a light naphtha cut, comprising two separation steps located downstream of the reaction step which can be used to improve the energy efficiency of said process.

Gasoline production process comprising an isomerization step followed by at least two separation steps

A process for the isomerization of a feed of hydrocarbon compounds containing Cand/or C hydrocarbon compounds, comprising: a) supplying an isomerization unit with at least one liquid fraction of the feed of hydrocarbon compounds and isomerizing the feed in the presence of a chlorinated catalyst; b) supplying a stabilization unit containing at least one stabilization column with the effluent obtained from the isomerization unit and separating the effluent; c) providing an absorption unit having one absorption column; d) extracting a liquid flow enriched in chlorinated compounds from the absorption unit which is recycled to the isomerization unit; and e) extracting the liquid flow containing at least one isomerate from the stabilization unit.

Process for the isomerization of C5/C6 hydrocarbon cuts with chlorinated compound recycling

A process for recovering 1-hexene comprising: a) separating the mixture obtained from the ethylene trimerization reaction into a top fraction comprising ethylene and a bottom fraction, b) separating a portion of the bottom fraction obtained from step a) into a top fraction comprising 1-hexene and 1-butene and a bottom fraction, c) separating a portion of the fraction comprising 1-hexene and 1-butene obtained from step b) into a top fraction principally comprising 1-butene and into a bottom fraction principally comprising 1-hexene, and in said process: a portion of the bottom fraction obtained from step b) is returned to the reaction section and another portion of said bottom fraction obtained from step b) is used in a recirculation loop connecting the reaction section and the column of said step b), said recirculation loop being used to cool the reaction section and to reboil said column of step b).

Process for separating 1-hexene from a mixture of products obtained from an ethylene trimerization zone

The present invention describes a process for the production of alkyl esters of fatty acids and glycerine employing, in a reaction section, at least one transesterification reaction between an animal or vegetable oil and an aliphatic mono-alcohol, and using a heterogeneous solid catalyst, in which the energy balance is improved by thermal integration of the energy released during the mono-alcohol condensation step.

Process for the production of alkyl esters from animal or vegetable oil and an aliphatic mono-alcohol with thermal integration

Natural gas liquefaction method wherein the natural gas is cooled, condensed and subcooled by indirect heat exchange with two cooling mixtures to a temperature such that the natural gas does not remain entirely liquid under pressure after expansion to the atmospheric pressure. The liquid natural gas under pressure is expanded to form a gas phase and a liquid phase. The gas phase can be either compressed and recycled to the process inlet, or used as a fuel. The liquid phase is expanded to form a gas phase and a liquid phase. The gas phase is compressed and recycled to the process inlet. The liquid phase constitutes the liquefied natural gas produced.

Liquefaction of natural gas with natural gas recycling

Growing community of inventors

Rueil Malmaison, France

Pierre-Yves Martin