Patent application number | Description | Published |
20080217232 | PROCESS AND DEVICE FOR SIMULATED MOVING BED SEPARATION WITH A REDUCED NUMBER OF LARGE DIAMETER VALVES AND A REDUCED LINE VOLUME - The invention concerns a simulated moving bed adsorption separation device comprising a limited number of large diameter valves. According to the invention, the device comprises a column with a plurality of sectors Sk with 2 superimposed plates Pi with a single distribution network, each sector Sk comprising an external principal bypass line Lk connected to each plate Pi of Sk via a large diameter plate valve Vi and an external secondary bypass line Mk comprising a small diameter valve VMk connected to the adjacent sector Sk−1. Each line Lk comprises a flow rate limitation means and is connected to each fluid network via a single large diameter valve. Further, the connectors of lines Lk onto the column are offset by at most 20° inside Sk to limit the volume of lines Lk, and are offset by a mean angle in the range 70° to 110° between two neighbouring sectors Sk and Sk+1 so as not to weaken the column mechanically. The plates preferably comprise panels DMEi,j with parallel segments the direction of which varies from plate to plate or per group of 2 plates. | 09-11-2008 |
20080237132 | Process and device for simulated moving bed separation with a reduced number of valves and lines - The invention concerns a simulated moving bed adsorption separation device comprising a limited number of valves. According to the invention, the device comprises a column with a plurality of sectors Sk with 2 superimposed plates Pi with a single distribution network, each sector Sk comprising an external principal bypass line Lk connected to each plate Pi of Sk via a plate valve V | 10-02-2008 |
20080269535 | PROCESS FOR PRODUCING HIGH PURITY META-XYLENE, COMPRISING SIMULATED MOVING BED ADSORPTION AND CRYSTALLIZATION - The invention concerns a process for producing high purity meta-xylene, comprising a step for separation by simulated moving bed adsorption starting from an aromatic C8 feed delivering a fraction which is rich in meta-xylene and a fraction which is depleted in meta-xylene, and a step for crystallization of the meta-xylene rich fraction. The purity of the meta-xylene produced is at least 99.5%. | 10-30-2008 |
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 |
20090149686 | PROCESS FOR SEPARATION OF C8 AROMATIC COMPOUNDS WITH LIMITED RECYCLING - Process for the production of paraxylene from a C8 aromatic feedstock that comprises the following stages:
| 06-11-2009 |
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 |
20100113854 | AGGLOMERATED ZEOLITIC ADSORBENTS, THEIR METHOD OF PREPARATION AND THEIR USES - The present invention relates to agglomerated zeolitic adsorbents based on zeolite X with an Si/Al ratio such that 1.1505-06-2010 | |
20110118525 | IMPROVED SIMULATED MOVING BED SEPARATION DEVICE - A device (SMB) for separation by simulated moving bed adsorption comprises a plurality of elementary adsorption zones Z | 05-19-2011 |
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 |
20110184165 | Aggregate Zeolitic Absorbents, Their Method of Preparation and Their Uses - The invention relates to aggregate zeolitic adsorbents based on faujasite X type zeolite powder having a low silica content and small crystals, exchanged with barium or based on faujasite X type zeolite having a low silica content and small crystals, exchanged with barium and potassium. | 07-28-2011 |
20110198500 | Novel method for on-line measurement in simulated moving bed units and application to control and regulation of said units - 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.
| 08-18-2011 |
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 |
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 |
20140148633 | SIMULATED COUNTERCURRENT CHROMATOGRAPHIC SEPARATION PROCESS AND DEVICE WITH LOW PRESSURE DROP AND HIGH NUMBER OF ZONES - A simulated moving bed separation process is characterized in that the feed and desorbant injection streams are each divided into N streams (N being a whole number strictly greater than 1) injected respectively at N distinct feed injection points and at N distinct desorbant injection points, and in that the extract and raffinate withdrawal points are also each divided into N streams each withdrawn from N distinct withdrawal points, the device being constituted by 4×N chromatographic zones. | 05-29-2014 |
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 |
20140197073 | PROCESS FOR THE PRODUCTION OF A GASOLINE WITH A LOW SULFUR CONTENT - This invention relates to a process for treatment of a gasoline comprising diolefins, olefins, and sulfur-containing compounds including mercaptans, in which:
| 07-17-2014 |
20140323778 | CATALYTIC ADSORBENT FOR THE CAPTURE OF ARSENIC AND THE SELECTIVE HYDRODESULFURIZATION OF GASOLINES - A catalytic adsorbent, comprising at least cobalt and molybdenum deposited on a porous substrate in which the content of cobalt, expressed in terms of CoO oxide, is between 11 and 30% by weight relative to the total weight of said adsorbent and the content of molybdenum, expressed in terms of MoO | 10-30-2014 |
20140374321 | PROCESS FOR ELIMINATING ARSENIC FROM A HYDROCARBON FEED - The invention concerns a process for eliminating arsenic from a hydrocarbon feed which is at least partially liquid, comprising at least the following steps:
| 12-25-2014 |
20150087878 | PROCESS FOR SEPERATING XYLENES BY SIMULATED COUNTER-CURRENT, TREATING A FEED INCLUDING OXYGEN-CONTAINING AROMATIC IMPURITIES OF THE PHENOL TYPE - The present invention describes a process for separating xylenes in simulated counter-current (simulated moving bed, SMB) for the treatment of feeds including oxygen-containing aromatic impurities of the phenol type and/or derivatives thereof, by controlled injection of water in the ingoing streams. | 03-26-2015 |