Ifp Energies Nouvelles

Rhodia Chimie

Rhodia Polyamide Intermediates

Arkema France

Rampal Patou

Quadrimex Chemical

Newton's

Frédéric Augier

Vincent Coupard

Philibert Leflaive

Ludivine Bouvier

Christophe Boyer

Damien Leinekugel Le Cocq

Catherine Laroche

Cécile Lutz

Yacine Haroun

Jean-Pierre Simonato

Alexandre Vonner

Denis Darmancier

Robert Beaumont

Serge Veracini

Quitterie Persillon

Sylvie Szendrovics

Daniel Amoros

Gérard Hotier

Didier Bonnet

Pedro Maximiano Raimundo

Maria Ignez Broglio

Aude Royon-lebeaud

Maxime Vassieu

Elodie Julien

Jean-Louis Plot

Frédéric Bazer-Bachi

The present invention relates to an oligomerization process implemented in a gas/liquid reactor comprising a 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 using a recycle of gaseous headspace

An enclosure includes at least one packed bed and a mixture supply line for delivering at the bottom of the enclosure a mixture of a liquid with a gas. The enclosure includes a system for separating the liquid phase and the gas phase of the mixture, the system being arranged between the bed and the mixture supply line, and this system including a housing having a flow passage for the degassed liquid and discharge passages for the disengaged gas.

Enclosure containing a granular bed and a distribution of a gas phase and of a liquid phase circulating in an ascending flow in this enclosure

The present invention relates to a treatment or hydrotreatment reactor comprising at least one granular bed (), an essentially liquid phase (L) and an essentially gaseous phase (G) present in the bottom of the reactor and separated by an interface (), and a distribution plate () with at least one main chimney () allowing circulation of liquid phase (L) towards the bed and at least one passage () for feeding gas phase (G) into said bed. According to the invention, plate () also comprises at least one mixed chimney () for circulation of the liquid phase towards the bed or for feeding the gas phase into said bed.

Treatment or hydrotreatment reactor with a granular bed and an essentially liquid phase and an essentially gaseous phase flowing through the bed

The present invention relates to a process for producing carboxylic acids. It relates more particularly to a process for producing carboxylic acids by oxidation of a hydrocarbon with oxygen or a gas containing oxygen, and even more particularly to the oxidation of cyclohexane to adipic acid. The invention relates to a process for producing carboxylic acids by oxidation with oxygen or a gas containing oxygen of a cycloaliphatic hydrocarbon in the presence of an oxidation catalyst and of a monocarboxylic oxidation solvent that is lipophilic in nature, comprising a step of extraction of the dicarboxylic acids formed in the oxidation step, consisting in carrying out, in liquid phase, an extraction of the diacids using water.

Method for making carboxylic acids

The present invention relates to a continuous method for oxidizing saturated cyclic hydrocarbons by oxygen to obtain a mixture of hydroperoxides, alcohols and ketones. It relates more particularly to a method for oxidizing cyclohexane in a column forming a bubble reactor, for the formation of cyclohexyl hydroperoxide, cyclohexanol and cyclohexanone. According to the invention, the column may be supplied with oxygen-enriched air, while meeting the maximum oxygen concentration requirements in the headspace of the reactor to avoid any risk of explosion.

Method for oxidizing saturated cyclic hydrocarbons by oxygen

Growing community of inventors

Saint Symphorien D'Ozon, France

Frédéric Augier