公开(公告)号：US20090149686A1

公开(公告)日：2009-06-11

申请号：US12253382

申请日：2008-10-17

申请人： Philibert LEFLAIVE ,  Arnaud Baudot ,  Helene Rodeschini ,  Tom Frising

发明人： Philibert LEFLAIVE ,  Arnaud Baudot ,  Helene Rodeschini ,  Tom Frising

IPC分类号： C07C5/22

CPC分类号： C07C7/13 ,  C07C7/005 ,  C07C7/144 ,  C07C15/08

摘要： Process for the production of paraxylene from a C8 aromatic feedstock that comprises the following stages: A stage for separation by adsorption in a simulated moving bed SMB that produces an extract that contains at least 95% paraxylene and at least one raffinate R that contains ethylbenzene, A recycling of raffinate to the SMB separation stage after isomerization, in which R is separated in membrane separation means to obtain a first fraction F1 that is relatively high in ethylbenzene, which is purged, and an additional fraction F2 that is relatively low in ethylbenzene, which is recycled to the SMB after a single isomerization, preferably in the liquid phase.

摘要翻译： 用于从C8芳族原料生产对二甲苯的方法，其包括以下阶段：用于通过模拟移动床中的吸附分离的阶段SMB，其产生含有至少95％对二甲苯和至少一种含乙苯的萃余液R的萃取物， 在异氰酸化后将萃余液再循环到SMB分离阶段，其中R在膜分离装置中分离以获得被吹扫的乙苯中相对较高的第一馏分F1和乙苯中相对低的另外馏分F2， 其在单一异构化之后再循环至SMB，优选在液相中。

公开(公告)号：US20090018380A1

公开(公告)日：2009-01-15

申请号：US12181771

申请日：2008-07-29

申请人： Philibert LEFLAIVE ,  Lue Wolff ,  Damien Leinekugel Le Cocq

发明人： Philibert LEFLAIVE ,  Lue Wolff ,  Damien Leinekugel Le Cocq

IPC分类号： C07C7/12

CPC分类号： B01D15/185 ,  C07C7/12 ,  C07C7/13 ,  C07C15/08

摘要： 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.

摘要翻译： 在模拟移动床（SMB）中在单个吸附阶段中从芳香原料F分离至少等于99.5重量％的纯度的对二甲苯的方法，包括不同数量的床，分配给供应的区域1 的脱附剂D和萃取物E的排出物; 提取物E的抽出和原料F的供给之间的区域2; 在原料供应和萃余液R的排出之间的区域3; 在萃余液R的抽出和解吸剂D的供应之间的区域4，其中12个吸附床的SMB具有床构型（2,5,3,2），15个吸附床的SMB具有床构型 3，6，4，2），或19个吸附剂床的SMB具有床构型（4,7,6,2），其中在后一种情况下的解吸剂是对二甲基苯。

公开(公告)号：US20130006031A1

公开(公告)日：2013-01-03

申请号：US13495423

申请日：2012-06-13

申请人： Philibert LEFLAIVE ,  Damien LEINEKUGEL LE COCQ ,  Gerard HOTIER ,  Luc WOLFF

发明人： Philibert LEFLAIVE ,  Damien LEINEKUGEL LE COCQ ,  Gerard HOTIER ,  Luc WOLFF

IPC分类号： C07C7/12

CPC分类号： B01D15/1821 ,  C07C7/13 ,  C07C15/08

摘要： 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.

摘要翻译： 本发明描述了一种用于模拟移动床分离方法的新型结构，其特征在于使用两个各自含有12个床的吸附器，这两个吸附器平行起作用。 这种新颖的配置可用于优化对二甲苯生产。

公开(公告)号：US20100048973A1

公开(公告)日：2010-02-25

申请号：US12543091

申请日：2009-08-18

申请人： Xavier DECOODT ,  Gerard HOTIER ,  Philibert LEFLAIVE ,  Damien LEINEKUGEL LE COCQ

发明人： Xavier DECOODT ,  Gerard HOTIER ,  Philibert LEFLAIVE ,  Damien LEINEKUGEL LE COCQ

IPC分类号： C07C7/12 ,  B01D15/22

CPC分类号： B01D15/1835 ,  B01D15/1842 ,  C07C7/13 ,  C07C15/08

摘要： 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 Li/i+1 directly joining two successive plates Pi, Pi+, 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 Li/i+1 is adjusted so as to obtain the best performance of the SMB.

摘要翻译： 在SMB装置的模拟移动床中通过吸附分离原料F的方法，其包括用于解吸由萃取物生产的化合物的区域1，用萃余液生产的化合物解吸区域2，用于吸附化合物的区域3 通过提取产生的区域4和位于萃余液的抽出物和解吸剂的供应之间的区域4，由此该装置包括直接连接两个连续的板Pi，Pi +的外部旁路管线Li / i + 1，其配备 用于调节旁路管线Li / i + 1的清除流量限制装置的开度的调节流量和关闭装置的非自动化装置，以获得SMB的最佳性能。