Ifp Energies Nouvelles

Institut Francais Du Pe'trole

Compagnie Generale Des Etablissements Michelin

Arkema France

Frederic Augier

Damien Leinekugel Le Cocq

Frederic Bazer-Bachi

Yacine Haroun

Alexandre Vonner

Cecile Plais

Philippe Beard

Gerard Paul Hotier

Christophe Boyer

Denis Darmancier

Philibert Leflaive

Arnaud Baudot

Sylvain Louret

Aude Royon-Lebeaud

Natacha Touchais

Tiago Sozinho

Jeremy Gazarian

Pedro Maximiano Raimundo

Jauffray Salvatore Delteil

Jauffray Delteil

Vincent Coupard

Ludivine Bouvier

Catherine Laroche

Cécile Lutz

Ludovic Raynal

Lionel Magna

Pierre Boucot

Marc Jacquin

Caroline Aymard

Rejane Dastillung

Jerome Bonnardot

Romina Digne

Sophie Drozdz

Quitterie Persillon

Sylvie Szendrovics

Nicolas Pupat

Manel Fourati

Daniel Svezia

Mohamed Fadhel Ben Chaabane

Etienne Jourdier

Celine Hognon

Paris Packeu

Charly Rogeon

Cecile Barrere-Tricca

Pierre Balz

Aude Royon-lebeaud

Pierre Olivier Dreger

Frederic Bazer-bachi

Céline Hognon

The present invention describes a device for supplying or collecting from a column forming part of an assembly of columns in series, for use in a simulated moving bed separation process. The present device can be used to very substantially reduce the non-selective volumes in each column.

Concept for collection and distribution channels for a simulated moving bed separation process using N-columns in series

The present invention relates to the field of gas/liquid reactors making possible the oligomerization of ethylene to give linear olefins by homogeneous catalysis with a reaction chamber comprising transverse internals capable of slowing down the ascent of the gaseous ethylene in the said reactor.

Gas/liquid oligomerization reactor comprising transverse internals

The present invention relates to an oligomerization process implemented in a sequence of at least two gas/liquid reactors, placed in series, comprising at least one gas headspace recycle loop. The process more particularly relates to the oligomerization of ethylene to linear alpha-olefins such as 1-butene, 1-hexene, 1-octene or a mixture of linear alpha-olefins.

Oligomerization process implementing the recycling of the gas headspace

A process for producing cellulolytic and/or hemicellulolytic enzymes with a strain of microorganism belonging to the family of filamentous fungi. The process includes growing the fungi in an aqueous culture medium, in the presence of at least one carbon-based growth substrate, in a stirred and aerated bioreactor. It also includes the production of enzymes, starting with the aqueous culture medium in the presence of at least one inductive carbon-based substrate and also inducing the production of hydrophobins. Further, at least a portion of the hydrophobins produced in step (b) are reintroduced into the growth step (a).

Process for producing enzymes with a strain belonging to a filamentous fungus

The invention relates to a process for the oligomerization of ethylene, carried out at a pressure of between 0.1 and 10.0 MPa, at a temperature of between 30 and 200&#xb0; C., in a cascade of N gas/liquid reactors in series, N being at least equal to 2, comprising a step of introducing a catalytic oligomerization system into at least the first reactor of the cascade, a step of bringing said catalytic system and an optional solvent into contact with ethylene by introducing said ethylene into the lower part of the reaction chamber of at least the first reactor of the cascade, for each reactor n, a step of withdrawing a liquid fraction in the lower part of the reaction chamber of the reactor n, the liquid fraction being separated into two streams: a first stream corresponding to a first, 'main', part of the liquid fraction, which is conveyed to a heat exchanger for cooling; a second stream corresponding to the second part of the liquid fraction which constitutes the liquid feedstock of the following reactor n+1 in the cascade, a step of introducing said second part of the liquid phase withdrawn from the reactor n towards the reaction chamber of the following reactor n+1 in the direction of flow, a step of cooling said first part of the liquid fraction withdrawn from the reactor n in step c) by passing said first part of the liquid fraction into a heat exchanger in order to obtain a cooled liquid fraction, a step of introducing said liquid fraction cooled in step e) at the top of the reaction chamber of said reactor n, the steps a) to f) being carried out, unless indicated otherwise, for each reactor n of the cascade, n being between 1 and N. The invention also relates to a device of N stirred gas/liquid reactors in a cascade, enabling the oligomerization process to be carried out.

Process for oligomerization in a cascade of stirred gas-liquid reactors with staged injection of ethylene

The invention relates to a device for the upflow of a single-phase fluid comprising at least two beds of solid particles and at least one bypass means for a portion of said fluid, and also to the use thereof.

Anti-clogging device for the upflow of a fluid

The present invention describes a fluid distribution and collection device of a simulated moving bed separation unit comprising N plates, themselves divided into meridian panels, which device makes it possible to maintain an approximately identical residence time for each portion of fluid.

Distribution system using meridian panels for a simulated moving bed separation method using N columns in series

The present invention relates to an oligomerization process using a reaction device comprising a dispersion means. In particular, the process relates to the oligomerization of ethylene to give linear &#x3b1;-olefins, such as 1-butene, 1-hexene or 1-octene, or a mixture of linear alpha-olefins.

Oligomerization method using a reaction device comprising a dispersion means

Liquid-liquid extraction and distillation of a liquid feedstock of at least ethanol, water, acetaldehyde and at least one hydrocarbon-based impurity with a boiling point of between 20&#xb0; C. and 100&#xb0; C. at atmospheric pressure, or which generates, with at least one of the compounds of the liquid feedstock and/or with the organic extraction solvent and/or with the aqueous back-washing solvent, an azeotrope and a partition coefficient of between 0.1 and 5 at any point in a back-washing (BW) column of the extraction section, by (a) a liquid-liquid extraction step a washing (W) column, a back-washing (BW) column and at least one injection (F) of a cut withdrawn in step b), located in the top half of the back-washing column, (b) distillation of an aldehyde and ethanol separation producing at least one aldehyde-rich effluent, one ethanol-rich effluent and one water-rich effluent.

Method for selectively separating impurities present in a hydro-alcoholic cut by recycling through a liquid-liquid extraction column

Fluid mixing and distribution device for a downflow catalytic reactor, the said device comprising a mixing zone comprising at least one fluid-mixing space of length L' and a fluid-exchange space of length L&#x2032;, situated underneath and superposed with said mixing space, it being understood that the length L&#x2032; of the said exchange space is strictly greater than the length L&#x2032; of the said mixing space so as to create a roof at the level of the said exchange space, the said roof comprising at least one longitudinal opening suited to the passage of the following its from the said exchange space to the said distribution zone.

Mixing and distribution device with longitudinal opening

Reaction device which makes possible the oligomerization of olefins to give linear olefins and preferably linear &#x3b1;-olefins, comprising a gas/liquid reactor and a reactor of plug-flow type. The reaction device is also employed in an oligomerization process.

Process for the oligomerization of ethylene with stirred gas/liquid reactor and plug-flow reactor sequence

The present invention describes a device for distributing incoming fluid or for collecting fluid being discharged from a column forming part of an assembly of N columns in series intended to be used in a simulated moving bed separation process. The present device can be used to very substantially reduce the non-selective volumes at each column, while at the same time providing the flow with good synchronicity.

Peripheral distribution or collection system for a simulated moving bed separation method using N columns in series

A device for mixing fluids for a downflow catalytic reactor (), having

Compact device for mixing fluids

Device for mixing and distributing fluids for a downflow catalytic reactor, comprising:

Mixing device situated above the distribution zone

The invention relates to a process for purifying an aqueous solution comprising ethanol, acetaldehyde and diethylacetal comprising: a step A) of countercurrent liquid-liquid extraction comprising an extraction section supplied at the top by said aqueous solution as a mixture with at least one fraction of the water/ethanol/acetaldehyde raffinate resulting from the back extraction step B), and at the bottom by an extraction solvent, and producing an extract at the top and a purified feedstock at the bottom; &#x2014;a step B) of countercurrent liquid-liquid back extraction comprising a back extraction section supplied at the top by an acidic aqueous solution, the pH of which is between 0.5 and 5, and at the bottom by the extract resulting from step A), and producing an extract at the top and a water/ethanol/acetaldehyde raffinate at the bottom.

Process for purifying an aqueous solution comprising diethylacetal

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Saint Symphorien D'Ozon, France

Frederic Augier