Institut Francais Du Pe'trole

Ifp Energies Nouvelles

Axens

Separex

Institut Francais Du Petrole & Separex

Other

Institute Francais Du Petrole

Institut Fran.cedilla.ais Du Petrole

Institut Fran&ccedil;ais Du P&eacute;trole

Gerard Paul Hotier

Philibert Leflaive

Damien Leinekugel Le Cocq

Frederic Augier

Pierre Renard

Sylvain Louret

Than Nguyen Thanh

Claude Roux Guerraz

Paul Mikitenko

Annick Pucci

Choua Cohen

Luc Wolff

Didier Pavone

Xavier Decoodt

Daniel Lonchamp

Nicolas Couenne

Robert Jacob

Gabriel Terneuil

Jean-Michel Toussaint

Alain Methivier

Fabian Lambert

Dominique Humeau

Tom Frising

Pierre-Yves Le Goff

Francis Nativel

France Chopinet

Philippe Marteau

Eric Benazzi

Jean Cosyns

Jean-Francois Le Page

Fabio Alario

Jean-Marie Basset

Andre Deschamps

Christophe Nedez

Isabelle Prevost

Jerome Pigourier

Denis Darmancier

Mathieu Digne

Roger-Marc Nicoud

Agnes Choplin

Stuart R MacPherson

Albert Theolier

Pascal Duchene

Philibert LeFlaive

Albert Le Corre

Damien Leinekugel-Le-cocq

Damien Leinekugel Le Coco

Jean-Lucien Molle

Michel Leclercq

Roger Nicoud

Sophie Dewally-Morel

Michel Perrut

Nathalie Zanier

Kim Seo Il

Francedillaois Cansell

Gerard Bureau Du Colombier

Frederic Aügier

The present invention describes a process for obtaining para-xylene from a feedstock containing xylenes, ethylbenzene and C9+ hydrocarbons, said process comprising

Method for producing paraxylene using a simulated moving-bed step, and a step of fractionating two fractions in a two-section column

Method for the simulated moving bed (SMB) separation of a feedstock (F), in which: at least one zone (1, 2, 3, 4) contains fewer than three beds, if the stream (D, E, F, R) delimiting said zone and situated upstream of said zone is injected or withdrawn at the plate Pvia the bypass line L, then the stream delimiting said zone and situated downstream of said zone is injected/withdrawn at the plate Pvia the bypass line L, and if the stream delimiting said zone and situated downstream of said zone is injected or withdrawn at the plate Pvia the bypass line L, then the stream delimiting said zone and situated upstream of said zone is injected/withdrawn at the plate Pvia the bypass line L.

Simulated moving bed separation method and device with reduced number of beds and bypass fluid flow

Method for the simulated moving bed separation of a feedstock (F), in which when a fluid/effluent (feedstock F, desorbent D, extract E, raffinate R) is injected/withdrawn into/from a chosen plate (P) using an external bypass line (L, L) connected to said chosen plate (P), the flow rate within the said external bypass line (L, L) is controlled in such a way that: a major proportion of the fluid/effluent (F, D, E, R) is injected/withdrawn into/from the chosen plate (P); and a minor proportion of the fluid/effluent (F, D, E, R) is injected/withdrawn into/from the adjacent plate (P, P) connected to the said external bypass line (L, L).

Simulated moving bed separation method and device with bypass fluid flow

The present invention describes a novel configuration for simulated moving bed separation processes characterized by using two adsorbers each containing 12 beds, these two adsorbers functioning in parallel. This novel configuration can be used to optimize para-xylene production.

Process and apparatus for simulated counter-current chromatographic separation using two adsorbers in parallel for optimized para-xylene production

The present invention describes an analysis device and a method associated with this device, said device comprising an analysis cell () containing an optrode (), receiving an input laser signal and sending an output signal to the Raman spectrometer, and said method using two analysis routes: an analysis routeconnected to the internal circulation current passing from adsorber B to adsorber A, and an analysis routeconnected to the distilled raffinate originating from distillation column C.

Analysis device and associated method for operating simulated moving bed xylenes separation units a Raman spectrometer

The present invention describes a device for the distribution of fluids in a multi-stage column operating in simulated moving bed (SMB) mode comprising, in the direction of flow of the principal fluid, a distribution system () for auxiliary fluids, and a distributor plate () supported by stiffening elements () located below said plate (), said device being interposed between two successive beds of granular solid () denoted the upstream and downstream bed, the distribution system and the stiffening elements being immersed in the upstream and downstream granular beds to a slight extent with an upper limit for the degree of immersion.

Simulated moving bed column with a limited degree of immersion of the distribution system and optional stiffening elements within the granular bed

A device (SMB) for separation by simulated moving bed adsorption comprises a plurality of elementary zones Zin series operating in a closed loop, each of said zones comprising, between two successive fluid injection or extraction points, a unique bed Lof adsorbant solid with volume VAand a non-selective free volume V, in which the majority of the zones are ordinary elementary zones each having an identical volume VA of the same adsorbant S, and a substantially identical non-selective free volume equal to V; the device also comprises at least one particular elementary zone Z, termed the particular elementary zone, comprising a non-selective free volume Vwhich is greater than V, and a unique bed Lof adsorbant Swith volume VAwhich is less than VA, Shaving a volume adsorption capacity Cwhich is greater than that, C, of S, such that the overall adsorption capacity C&#xd7;VAof Zis closer to the overall adsorption capacity C&#xd7;VA of each of the ordinary elementary zones than the overall adsorption capacity of Zcalculated as if the adsorbant solid of bed Lof Zwere not the solid Sbut the solid S.

Device for simulated moving bed separation

A device (SMB) for separation by simulated moving bed adsorption comprises a plurality of elementary adsorption zones Zin series operating in a closed loop, and at least one singular adsorption zone with a dead volume which is greater than the adsorption zones Z, the solid adsorbant of said singular adsorption zone having a granulometry which is lower than that of the solid adsorbant of the ordinary adsorption zones.

Simulated moving bed separation device

A process for the production of para-xylene by simulated counter-current adsorption with high flexibility with respect to a reference run (100%) uses 2 adsorbers each with 12 beds, said adsorbers being able to be connected in accordance with 3 different modes; the flexibility obtained is 50% to 150%.

Highly flexible process and apparatus for the simulated counter-current production of para-xylene

Device for stiffening the plates of a multi-stage column with a diameter of more than 2 meters, whereby each plate supports a particle bed and the flow of at least one fluid passes through it from top to bottom, whereby said device consists of a number of beams that are located under the plate in question, each beam having a lower surface that is shaped like a triangle.

System for stiffening the plates of a large-diameter multi-stage column

The present invention describes a method for measuring the concentrations of species present at one point of a separation unit functioning in simulated moving bed mode (SMB), using an immersing probe located at one point in the unit or on one of the streams entering or leaving said unit, and a thermocouple located in the vicinity of the immersing probe, in which a Raman spectrum obtained using a laser source functioning at a wavelength of 785 nm is utilized.

Method for on-line measurement in simulated moving bed units and application to control and regulation of said units

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 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, allowing said plates to be flushed, in which each of the bypass lines Lcomprises automated means for regulating the flow rate in the bypass lines, the bypass lines in certain cases being subject to a flushing flow during injection or withdrawal operations.

Process and apparatus for simulated moving bed separation comprising bypass lines in every other bed and with controlled flushing flow rates during injections and withdrawals

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

Growing community of inventors

Rueil Malmaison, France

Gerard Paul Hotier