Ifp Energies Nouvelles

Arkema France

Institut Francais Du Pe'trole

Ceca S.a.

Total Raffinage Chimie

Cece S.a.

Totalenergies Onetech

Catherine Laroche

Ludivine Bouvier

Philibert Leflaive

Cécile Lutz

Damien Leinekugel Le Cocq

Arnaud Baudot

Stéphane Kieger

Pascal Etienne

Serge Nicolas

Javier Perez-Pellitero

Marie-Laurence Labede

Nicolas Bats

Julien Grandjean

Alexandre Vonner

Tom Frising

Danielle Richard

Stephane Kieger

Frederic Augier

Jean-Francois Joly

Florent Guillou

Morgane Josserand

Laurent Simon

Frederic Feugnet

Dominique Plee

Joel Patarin

Bogdan Harbuzaru

Jean-Louis Paillaud

Joël Patarin

Quitterie Persillon

Arnold Lambert

Sylvie Szendrovics

Emmanuelle Bracco

Frédéric Augier

Delphine Marti

Thierry Leflour

Olivier Delpoux

Elodie Comte

Jean Louis Paillaud

Maria Manko

Airy Tilland

Anne-Sophie Gay

Guillaume Blancke

Javier Perez Pellitero

David Goncalves

Florent Moreau

Marie-Laurence LABÈDE

The invention relates to a process for the liquid-phase separation of xylose from a mixture of C5 and C6 sugars comprising at least xylose and glucose, by adsorption of xylose on a zeolitic adsorbent based on FAU-type zeolite crystals having an Si/Al atomic ratio of less than or equal to 1.5 comprising barium, wherein (a) said mixture is brought into contact with said adsorbent, by liquid chromatography, to obtain a glucose-enriched liquid phase and a xylose-enriched adsorbed phase; and (b) on the one hand, said glucose-enriched liquid phase is recovered and said phase adsorbed on said adsorbent is desorbed by means of a desorption solvent in order to recover the xylose on the other hand.

Liquid phase separation of second-generation sugars by adsorption on FAU zeolite having a Si/Al atomic ratio of less than 1.5

Device and process for converting a feedstock of aromatic compounds, in which the feedstock is notably treated using a fractionation train (-), a xylenes separating unit () and an isomerization unit (), and in which a pyrolysis unit () treats a second hydrocarbon-based feedstock, produces a pyrolysis effluent feeding the feedstock, and produces a pyrolysis gas comprising CO, CO2 and H2; a WGS water gas shift reaction section () suitable for treating the pyrolysis gas and for producing a WGS gas enriched in CO2 and in hydrogen; a CO2 aromatization reaction section () suitable for: at least partly treating the WGS gas to produce a hydrocarbon effluent comprising aromatic compounds, and feeding the feedstock with the hydrocarbon effluent.

Production of aromatics by pyrolysis, water gas shift and aromatization of CO2

The present invention relates to zeolite adsorbents based on agglomerated crystals of zeolite X comprising barium, potassium, sodium and strontium. These adsorbents have applications in the separation of fractions of aromatic C8 isomers and in particular xylenes.

Zeolite adsorbents based on barium, strontium, potassium and sodium, preparation process therefor, and uses thereof

The invention relates to a pretreatment process for improving the filling of a chamber with solid particles, in which said solid particles are mixed before loading of said solid particles into the chamber with at least one lubricant that is solid at ambient temperature chosen from saturated fatty acids having 14 or more carbon atoms, metal salts of saturated fatty acids having 14 or more carbon atoms, esters of fatty acids having 14 or more carbon atoms, fatty alcohols having 14 or more carbon atoms, linear N-alkanes having 16 or more carbon atoms in solid form, fumaric acid, talc, sodium stearoyl fumarate, the lubricant being introduced at a content of between 0.01% and 1% relative to the total weight of the mixture of solid particles and lubricant. The invention also relates to the use of the process for the pretreatment of particles of adsorbents for the separation of xylenes.

Pretreatment process for improving the filling of a chamber with solid particles

The invention relates to an oxygen carrier solid, its preparation and its use in a method of combustion of a hydrocarbon feedstock by active mass chemical-looping oxidation-reduction, i.e. chemical-looping combustion (CLC). The solid, which is in the form of particles, comprises an oxidation-reduction active mass composed of metal oxide(s) dispersed in a ceramic matrix comprising at least at least one feldspar or feldspathoid with a melting point higher than 1500&#xb0; C., such as celsian, and has, initially, a specific macroporous texture. The oxygen carrier solid is prepared from a precursor of the ceramic matrix, obtained from a macroporous zeolitic material with zeolite crystals of a specific size, and a precursor of the oxidation-reduction active mass.

Macroporous oxygen carrier solid with a refractory feldspar/feldspathoid, method for the preparation thereof, and use thereof in a chemical-looping oxidation-reduction method

Provided is a hybrid process for producing high-purity para-xylene from a feedstock of aromatic hydrocarbon isomer fractions having 8 carbon atoms, in a liquid phase. The process includes a liquid chromatography separation step and a crystallization step of the para-xylene from the purified stream of para-xylene obtained at the separation step.

Hybrid process for producing high-purity para-xylene with toluene solvent

Provided is a zeolite-based adsorbent in the form of agglomerates, where the adsorbent having a tortuosity factor, calculated from the pore distribution determined by mercury intrusion porosimetry, of greater than 1 and less than 3. The adsorbent also has a porosity as determined by mercury intrusion porosimetry of between 25% and 35%. The adsorbent is useful in the field of separations in particular in a process for separating para-xylene from aromatic hydrocarbon isomer fractions containing 8 carbon atoms.

Zeolite adsorbent in the form of low-tortuosity agglomerates

The present invention relates to zeolite adsorbents based on agglomerated zeolite X crystals comprising barium, potassium and sodium. These adsorbents find applications in the separation of aromatic C8 isomer fractions and especially xylene.

Zeolite adsorbents, preparation process therefor and uses thereof

The present invention relates to zeolitic adsorbents based on small agglomerated crystals of zeolite X comprising barium, combining optimum properties in terms of selectivity and of mechanical strength. These adsorbents have applications in the separation of fractions of aromatic Cisomers and in particular xylenes, in the separation of substituted toluene isomers, such as nitrotoluene, diethyltoluene or toluenediamine, in the separation of cresols and in the separation of polyhydric alcohols, such as sugars.

Zeolitic adsorbents, their process of preparation and their uses

The present invention relates to a zeolitic granular material having a connected zeolitic structure across the entire volume thereof, having high mechanical resistance to crushing in the bed, and optimised material transfer in the macro-mesopores. The invention also relates to the method for preparing said zeolitic granular material, as well as to the use thereof as an adsorbent material in co-current or counter-current liquid phase separation methods, typically in a simulated mobile bed.

Zeolitic granular material having a connected structure

The present invention relates to zeolitic adsorbents based on agglomerated crystals of FAU zeolite containing barium and/or potassium, with large external surface area, combining optimum properties in terms of selectivity and mechanical strength. These adsorbents find applications in the separation of cuts of C8-aromatic isomers and notably of xylenes, in the separation of isomers of substituted toluene such as nitrotoluene, diethyltoluene, toluenediamine, in the separation of cresols, and in the separation of polyhydric alcohols such as sugars.

Zeolitic adsorbents with large external surface area, process for preparing them and uses thereof

The invention relates to zeolitic absorbents based on at least one zeolite with hierarchical porosity, containing barium or barium and potassium, to the uses thereof for separating para-xylene from aromatic fractions containing 8 carbon atoms, and to the method for separating para-xylene from aromatic fractions containing 8 carbon atoms.

Zeolitic absorbents comprising a zeolite with hierarchical porosity

The present invention relates to a zeolite absorbent comprising at least one FAU zeolite with hierarchical porosity and comprising barium or barium and potassium, and the external surface area of which is greater than 20 m&#xb7;g, and the non-zeolite phase content being between 6% and 12% by weight with respect to the total weight of the absorbent. The present invention also relates to the use of such a zeolite absorbent as an adsorption agent, as well as the method for separation of para-xylene from aromatic isomer fractions with 8 carbon atoms.

Zeolite adsorbents with low binder content and large external surface area, method for preparation of same and uses thereof

Process for separating xylenes starting from a feed comprising cuts of isomers of aromatic hydrocarbons containing 8 carbon atoms, in a simulated moving bed, by selective adsorption of a xylene isomer in the presence of a desorbent, by means of particles of agglomerated zeolitic adsorbent based on zeolite crystals with a number-average diameter less than or equal to 1.2 &#x3bc;m, wherein the number-average diameter of said particles of adsorbent is between 150 &#x3bc;m and 500 &#x3bc;m and the mechanical strength measured by the Shell method series SMS1471-74 adapted for agglomerates with a size below 500 &#x3bc;m is greater than or equal to 2 MPa.

Method for separating xylenes in a simulated moving bed by means of a zeolitic adsorbent solid having a particle size of between 150 and 500 microns

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Vernaison, France

Catherine Laroche