Patent application number | Description | Published |
20090018380 | PROCESS AND DEVICE FOR IMPROVED SEPARATION OF PARAXYLENE IN A SIMULATED MOVING BED - Process for separating paraxylene with a purity that is at least equal to 99.5% by weight from an aromatic feedstock F in a single adsorption stage in a simulated moving bed (SMB), comprising different numbers of beds, allocated to a zone 1 between the supply of the desorbent D and the draw-off of the extract E; a zone 2 between the draw-off of the extract E and the supply of the feedstock F; a zone 3 between the supply of the feedstock and the draw-off of the raffinate R; a zone 4 between the draw-off of the raffinate R and the supply of the desorbent D, wherein an SMB of 12 adsorbent beds has bed configuration (2, 5, 3, 2), an SMB of 15 adsorbent beds has bed configuration (3, 6, 4, 2), or an SMB of 19 adsorbent beds has bed configuration (4, 7, 6, 2), wherein the desorbent in this latter case is paradiethylbenzene. | 01-15-2009 |
20090036726 | PROCESS AND DEVICE FOR IMPROVED SEPARATION OF METAXYLENE IN A SIMULATED MOVING BED - Process for separation of metaxylene, with at least 99% by weight of purity of an aromatic feedstock F, in a single adsorption stage in a simulated moving bed in an SMB device that comprises 12, 13 or 15 adsorbent beds with different numbers of beds being employed in zone 1 between the supply of the desorbent D and the draw-off of the extract E; zone 2 between the draw-off of the extract E and the supply of the feedstock F; zone 3 between the supply of the feedstock and the draw-off of the raffinate R; and zone 4 between the draw-off of the raffinate R and the supply of the desorbent D whereby the process is carried out according to a configuration of zones (a, b, c, d), whereby a, b, c, and d represent the number of adsorbent beds that operate respectively in zones 1, 2, 3, 4 in which there is used:
| 02-05-2009 |
20100048973 | PROCESS AND DEVICE FOR SEPARATION IN A SIMULATED MOVING BED WITH A BYPASS FLUID FLOW RATE THAT IS NOT REGULATED AUTOMATICALLY - 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, | 02-25-2010 |
20100069696 | PROCESS FOR SEPARATING PROPYLENE MIXED WITH PROPANE BY ADSORPTION IN A SIMULATED MOVING BED - A process for separating propylene mixed with propane by adsorption in a simulated moving bed is described. The process operates in the gaseous phase or in the liquid phase, and it uses a 13X faujasite-type zeolite as adsorbent solid and butene-1 or isobutane or any mixture of these 2 components as desorbent. | 03-18-2010 |
20100089233 | PURIFICATION METHOD BY HYDROGEN ADSORBTION WITH COGENERATION OF CO2 STREAM PRESSURE - The present invention relates to a method of producing hydrogen of very high purity from a feed predominantly containing said hydrogen and a minor part of impurities mainly consisting of carbon dioxide, carbon monoxide, methane and heavier hydrocarbons. | 04-15-2010 |
20100258505 | 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 is described, the device comprising external bypass lines L | 10-14-2010 |
20110166406 | Improved Device for Simulated Moving Bed Separation - A device (SMB) for separation by simulated moving bed adsorption comprises a plurality of elementary zones Z | 07-07-2011 |
20110201865 | PROCESS AND DEVICE FOR SIMULATED MOVING BED SEPARATION WITH A MODULATED BY-PASS FLUID FLOW - 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 L | 08-18-2011 |
20110315634 | 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 external bypass lines L | 12-29-2011 |
20130006031 | PROCESS AND APPARATUS FOR SIMULATED COUNTER-CURRENT CHROMATOGRAPHIC SEPARATION USING TWO ADSORBERS IN PARALLEL FOR OPTIMIZED PARA-XYLENE PRODUCTION - 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. | 01-03-2013 |
20130053610 | HIGHLY FLEXIBLE PROCESS AND APPARATUS FOR THE SIMULATED COUNTER-CURRENT PRODUCTION OF PARA-XYLENE - 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%. | 02-28-2013 |
20140121436 | PROCESS AND APPARATUS FOR THE SIMULATED COUNTER-CURRENT PRODUCTION OF PARA-XYLENE, CONSTITUTED BY TWO ADSORBERS IN SERIES WITH A TOTAL NUMBER OF 22 OR FEWER BEDS - The present invention describes a novel configuration for simulated counter-current para-xylene production units, constituted by two adsorbers, characterized in that the volume occupied by the solid adsorbent is reduced by at least 8% compared with the volume of solid adsorbent contained in the adsorbers of a prior art unit. This novel configuration can be used to minimize the quantity of solid adsorbent necessary to produce a given quantity of para-xylene. | 05-01-2014 |
20140138285 | LIQUID-LIQUID EXTRACTION COLUMN USING PLATES EQUIPPED WITH A PRESSURE DROP GENERATOR ELEMENT - The present invention describes a liquid-liquid extraction column with perforated plates and overflows, the plates also being equipped with an additional friction element which makes it possible to increase the thickness of the layer of coalesced matter and to guarantee a counter-current flow of the continuous and dispersed phases. | 05-22-2014 |
20140142342 | LIQUID-LIQUID EXTRACTION COLUMN CONTAINING TWO DISTINCT TYPES OF PLATES - The present invention describes a liquid-liquid extraction column with perforated plates and downpipes, having a majority of so-called “open” plates and a minority of so-called “closed” plates, the two types of plates differing in the degree of perforation. Application of the said column to the treatment of liquid-liquid systems with time-variable coalescence. | 05-22-2014 |
20140155672 | PROCESS AND APPARATUS FOR SIMULATED COUNTER-CURRENT CHROMATOGRAPHIC SEPARATION FOR HIGH-PRODUCTIVITY PRODUCTION OF PARAXYLENE - The present invention describes a process for the separation of xylenes in simulated counter-current utilising at least one adsorber with a limited cumulated total height (Hcu) of adsorbent and a superficial velocity (Vsl) of less than 2 cm/s. | 06-05-2014 |
20140155673 | PROCESS AND DEVICE FOR SIMULATED-COUNTERCURRENT CHROMATOGRAPHIC SEPARATION FOR THE PRODUCTION OF METAXYLENE WITH HIGH YIELD - This invention describes a process for separation of xylenes for the purpose of the production of high-purity metaxylene, a simulated countercurrent process using at least one adsorber with a limited cumulative total level (Hcu) of adsorbent at a surface velocity (Vsl) that is less than 2 cm/s. | 06-05-2014 |
20140284250 | DEVICE FOR EXTRACTING SULPHUR-CONTAINING COMPOUNDS BY LIQUID-LIQUID EXTRACTION BY MEANS OF A SODA SOLUTION WITH AN OPTIMIZED FINAL WASHING STEP - Process of extracting sulphur-containing compounds from a hydrocarbon cut of the gasoline or LPG type by liquid-liquid extraction with a soda solution employing a unit ( | 09-25-2014 |
20140319025 | DEVICE FOR EXTRACTING SULPHUR-CONTAINING COMPOUNDS COMPRISING A FIRST PRETREATMENT REACTOR OPERATING IN BATCH MODE FOLLOWED BY A SECOND PRETREATMENT REACTOR OF THE PISTON TYPE - Process of extracting sulphur-containing compounds from a hydrocarbon cut of the gasoline or LPG type by liquid-liquid extraction with a soda solution employing a unit ( | 10-30-2014 |