Ifp Energies Nouvelles

Institut Francais Du Pe'trole

Axens

Xavier Decoodt

Gerard Paul Hotier

Damien Leinekugel Le Cocq

Philibert Leflaive

Gérard Hotier

Pierre Renard

Frederic Bazer-Bachi

Cecile Plais

Gilles Ferschneider

Jean-Christophe Viguie

Philibert LeFlaive

Pierre Yves Le Goff

Sébastien Durand

Stéphane Wermester

Sebastien Lecarpentier

Pierre Yves Le-Goff

Pierre-Yves Le-Goff

A reactor allowing continuous regeneration of catalyst grains having a chamber with an oxychlorination zone superposed on a calcination zone equipped with a pipe for introducing calcination gas and at least one pipe for injecting oxychlorination gas emptying into the inner space. Each gas passage has a gas evacuation device that is permeable to gas and impermeable to catalyst grains.

Reactor for continuous catalyst regeneration with a perforated box for mixing and distributing gases in the oxychlorination zone

A reactor for regenerating catalyst grains comprises a vessel having an oxychlorination zone superimposed over a calcining zone having a line for introducing gas. A chamber, disposed between oxychlorination and calcining zones, comprises an internal space located between two plates which are gas tight and impervious to catalyst grains. A plurality of tubes pass through the chamber to allow catalyst to pass from oxychlorination zone to calcining zone. A plurality of means pass through the chamber to allow calcining gas to pass from calcining zone to oxychlorination zone. At least one oxychlorination gas injection line opens into the internal space of the chamber. Each means for passage of calcining gas comprises at least one orifice communicating with the chamber internal space, and a means for evacuating gas which is permeable to gas and impermeable to catalyst grains.

Continuous catalyst regeneration reactor with a chamber for mixing gas and distributing gas in the oxychlorination zone

The present invention describes a process for regenerative reforming of gasolines, characterized by recycling at least a portion of the effluent from the catalyst reduction zone to the head of the last or penultimate reactor of the reaction zone. This arrangement can significantly improve the hydrogen balance of the unit and the production of reformate.

Process for pre-generative reforming of gasolines, comprising recycling at least a portion of the effluent from the catalyst reduction phase

The invention concerns a process for regenerating a catalyst for the production of aromatic hydrocarbons or for reforming, comprising a step for combustion in a zone A comprising at least 2 beds Aand A, a step for oxychlorination in a zone B, and a step for calcining in a zone C. A portion of the effluent gas from the oxychlorination zone is recycled via at least one scrubbing section D to the inlet to beds Aand A. Further, a portion of the effluent gas from zone B is recycled to the combustion bed A, passing via a blower but without passing via said scrubbing section D, and a portion is recycled to the inlet to zone B, passing via said blower but not via said scrubbing section. The invention also concerns the vessel in which said process is carried out.

Process and vessel for regenerating a reforming catalyst

The invention concerns a process for regenerating a catalyst for the production of aromatic hydrocarbons or for reforming. Said process comprises a step for combustion in a zone A comprising at least 2 beds Aand A, a step for oxychlorination in a zone B, and a step for calcining in a zone C. A portion of the effluent gas from the oxychlorination zone is recycled via at least one scrubbing section D to the inlet to beds Aand A. Further, a portion of the effluent gas from zone B is recycled, passing via a blower and without passing via said scrubbing section D, to the combustion bed A

Process for regenerating a reforming catalyst

A process for separating a feed F by simulated moving bed adsorption in a SMB device is described, the device comprising external bypass lines Lwhich directly connect two successive plates P, P, the index i being either even or (exclusive of the foregoing) odd, along the whole length of the column, in order to flush said plates, in which each of the bypass lines Lcomprises automated means for regulating the flow rate in the bypass lines, the degree of opening of said regulating means being defined by the following three rules:

Process and apparatus for simulated moving bed separation comprising bypass lines in every other bed and with a modulated bypass fluid flow rate

A process for separating a feed F by simulated moving bed adsorption in a SMB device comprises at least one zone 1 for desorption of the compounds produced in the extract, a zone 2 for desorption of the compounds produced in the raffinate, a zone 3 for adsorption of the compounds produced in the extract, a zone 4 located between the raffinate withdrawal and the desorbant supply, the device comprising external by-pass lines Ldirectly connecting two successive plates Pand P; in which the degree of opening of means for restricting the flushing flow rate of the by-pass lines Lare sequentially modified such that: 

Process and device for simulated moving bed separation with a modulated by-pass fluid flow

Process for separation of a feedstock F by adsorption in a simulated moving bed in an SMB device that comprises a zone 1 for desorption of compounds produced by extraction, a zone 2 for desorption of compounds produced with a raffinate, a zone 3 for adsorption of compounds produced by extraction, and a zone 4 that is located between the draw-off of the raffinate and the supply of the desorbent, whereby the device comprises external bypass lines Ldirectly joining two successive plates P, P, that are equipped with non-automated means for adjusting flow rate and closing means, in which the degree of opening of the restriction means of the scavenging flow rate of the bypass lines Lis adjusted so as to obtain the best performance of the SMB.

Process and device for separation in a simulated moving bed with a bypass fluid flow rate that is not regulated automatically

Device and process for separating at least one compound from a mixture in a simulated moving bed, comprising:

System for injecting a by-pass fluid in a separation method in a simulated moving bed

For use in a separation column, a mat element or a beam element has at least: an upper part; at least one distributor-collector part () having one or more secondary orifices () and at least one main orifice (), whereby the passage sections of orifices () and () are different; and a lower part (). The distributor-collector part or parts () arranged between the upper part () and the lower part (). A sealing element () arranged between the distributor-collector part () and the upper part (), and a sealing element () arranged between the distributor-collector part () and the lower part (). A separation element () arranged at distributor-collector part (), thus delimiting two spaces () for circulation of fluids.

Growing community of inventors

Carrieres S/Seine, France

Xavier Decoodt