Institut Francais Du Pe'trole

Jean-Yves Bernhard

Eric Benazzi

Jean-Francois Joly

Jean-Marie Deves

Bernard Chatelain

Jos&eacute; Brandely

Corinne Guitton

Pierre Toutant

Jean-Charles Viltard

Nathalie Ferrer

Yves Chauvin

Helene Olivier

Andre Hirschauer

Frederic Chaigne

Fre/ De/ Chaigne

The present invention relates to a distribution device intended for a gaseous effluent produced by a chemical reaction, comprising at least two inlet ways and two outlet ways. This device comprises at least one closed-loop line divided into four sections by four controlled sealing elements, and each one of said four ways communicates with a single section so that the inlet ways are connected to two opposite sections and said outlet ways are connected to the other two sections.

Distribution device for automatic catalyst evaluation multi-reactors

A method and to an equipment carry out measurements on an effluent resulting from a chemical reaction taking place in a reactor containing a catalyst. The method includes, in combination, injecting at least one feedstock into each of at least two reactors, separating the gas and liquid phases downstream from each reactor, sending the separated gas phase to be measured and analyzed while the other gas phases coming from the other separators are discharged, sending the separated liquid phase to be analyzed and measured, and automatically monitoring and controlling the chemical reaction in the reactors, the analysis and measurement cycle performed on the gas phase and the analysis and measurement cycle performed on the liquid phase.

Automatic multi-reactor catalyst evaluation method and device with a heavy feedstock

A method and an equipment carry out measurements on an effluent resulting from a chemical reaction taking place in a reactor containing a catalyst. The method includes, in combination, injecting at least one feedstock into at least two reactors, sending the effluent coming from one of the reactors for analysis and measuring controlling the pressure and the temperature of the effluent in the circuit contained between downstream from the reactors and upstream from the analysis device, and allowing automatic monitoring and control of the chemical reaction in the reactors and of the analysis and measurement cycle performed on the effluent produced by the reaction.

Automatic multi-reactor catalyst evaluation method an device with in-line analysis without liquid-gas separation

A catalyst containing a porous organic or mineral support and at least one active phase having at least one aluminum halide, at least one compound selected for quaternary ammonium halides and amine hydrohalides, and at least one cuprous compound, the support having been impregnated with the active phase, the catalyst essentially constituted by particles with an average diameter in the range 0.1 .mu.m to 150 .mu.m, and the support, before impregnation with the active phase, has a total pore volume in the range 0.1 cm.sup.3 /g and 6 cm.sup.3 /g.

Aliphatic alkylation catalyst comprising an active phase containing a

The invention concerns a process for purifying sulphuric acid, particularly after it has acted as a catalyst in aliphatic alkylation reactions. It is characterized in that the sulphuric acid is impregnated into a porous organic or inorganic support, for example silica, and is then calcined at least once to eliminate organic hydrocarbon substances which the sulphuric acid may contain.

Process for purifying impure sulphuric acid

The invention concerns a process for regenerating an impure catalyst comprising sulphuric acid deposited on silica. It is characterized in that the catalyst is calcined at least once to eliminate organic hydrocarbon substances contained in the catalyst, in particular as a result of its use in aliphatic alkylation reactions.

Process for regenerating an impure catalyst comprising sulphuric acid

Catalyst comprising a porous mineral or organic support and a mixture constituted by sulphuric acid, trifluoromethanesulphonic acid and, optionally, water. The invention also relates to a method for the preparation of the catalyst and its use in catalytic alkylation of isobutane and/or isopentane in the presence of at least one olefin comprising 3 to 6 carbon atoms per molecule.

Growing community of inventors

Mennecy, France

Jean-Yves Bernhard