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    • 4. 发明授权
    • Process for co-production of paraxylene, metaxylene and/or orthoxylene
    • 共生产对二甲苯,间二甲苯和/或邻二甲苯的方法
    • US06841714B2
    • 2005-01-11
    • US10247830
    • 2002-09-20
    • Philibert LeflaiveLuc WolffGérard HotierAlain Methivier
    • Philibert LeflaiveLuc WolffGérard HotierAlain Methivier
    • C07C7/00C07C7/13C07C15/08C07C7/12
    • C07C15/08C07C7/005C07C7/13
    • A process for co-production of paraxylene, metaxylene and/or orthoxylene from a hydrocarbon feedstock (1) that comprises [1] a separation stage of the feedstock in a simulated moving bed in a chromatographic column (9) that contains a number of beds of an adsorbent, interconnected in a loop, is described, whereby said column comprises an injection (3) of the feedstock, a draw-off (10) of an extract that consists of paraxylene and desorbent, an intermediate fraction (11) (extract or raffinate) that contains ethylbenzene, and a raffinate (12) that contains a mixture of metaxylene and orthoxylene that is virtually free of ethylbenzene and paraxylene and [2] a crystallization stage (27) of the metaxylene and/or orthoxylene fraction. Upstream from the adsorption zone and/or upstream from the crystallization zone, it is possible to distill the entering mixture to produce an orthoxylene-enriched fraction at the bottom and a metaxylene-enriched fraction at the top.
    • 一种从烃原料(1)共同生产对二甲苯,间二甲苯和/或邻二甲苯的方法,其包括[1]在色谱柱(9)中的模拟移动床中的原料的分离阶段,其包含多个床 描述了以循环相互连接的吸附剂,其中所述柱包括原料的注入物(3),由对二甲苯和解吸剂组成的萃取物的萃取物(10),中间馏分(11) 或萃余液)和含有实际上不含乙苯和对二甲苯的间二甲苯和邻二甲苯混合物的萃余液(12),[2]间二甲苯和/或邻二甲苯馏分的结晶阶段(27)。 从吸附区上游和/或结晶区上游,可以蒸馏进入的混合物,在底部产生富含邻二甲苯的馏分,并在顶部产生富含甲炔的馏分。
    • 5. 发明授权
    • Process for co-producing para-xylene and metaxylene, comprising two separation steps
    • 共同生产对二甲苯和间二甲苯的方法,包括两个分离步骤
    • US06838588B2
    • 2005-01-04
    • US10108392
    • 2002-03-29
    • Philibert LeflaiveAlain MethivierGérard Hotier
    • Philibert LeflaiveAlain MethivierGérard Hotier
    • C07C7/04C07C7/00C07C7/12C07C7/13C07C15/08
    • C07C7/005C07C7/13C07C15/08
    • A process is described for co-producing metaxylene and paraxylene from a hydrocarbon feed comprising two separation steps. The first step of the process is a counter-current simulated moving bed system in a chromatographic column containing at least five zones, comprising injecting the feed and injecting a desorbent and delivering an extract, a raffinate and an intermediate raffinate either continuously or discontinuously. The extract is distilled to obtain a paraxylene with a purity of at least 99.7%. The raffinate, which is richer in metaxylene, is distilled to extract the desorbent and injected into a counter-current simulated moving bed continuously delivering an extract and a raffinate. One of these two streams is enriched in metaxylene. The most metaxylene-rich stream is distilled to obtain metaxylene with a purity of more than 99%.
    • 描述了从包含两个分离步骤的烃进料共同生产间二甲苯和对二甲苯的方法。 该方法的第一步是在含有至少五个区域的色谱柱中的逆流模拟移动床系统,包括注射进料并注入解吸剂并连续地或不连续地递送提取物,萃余液和中间萃余液。 蒸馏提取物,得到纯度至少为99.7%的对二甲苯。 富含中间二甲苯的萃余液被蒸馏以提取解吸剂并注入到逆流模拟移动床中,连续输送提取物和萃余液。 这两条河中的一条富含间二甲苯。 蒸馏出最富含中间二甲烷的料流,得到纯度大于99%的间二甲苯。
    • 9. 发明授权
    • Process and device for improved separation of metaxylene in a simulated moving bed
    • 在模拟移动床中改善间二甲苯分离的方法和装置
    • US07838714B2
    • 2010-11-23
    • US12181525
    • 2008-07-29
    • Philibert LeflaiveLuc WolffDamien Leinekugel Le Cocq
    • Philibert LeflaiveLuc WolffDamien Leinekugel Le Cocq
    • C07C7/12
    • B01D15/185B01D53/06B01D2257/7027C07C7/13C07C15/08
    • 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: Either an SMB of 12 adsorbent beds operating according to the configuration (2, 5, 3, 2), Or an SMB of 13 adsorbent beds operating according to the configuration (2, 5, 4, 2), Or an SMB of 15 adsorbent beds operating according to the configuration (2, 6, 4, 3).
    • 在SMB装置的模拟移动床的单个吸附阶段中分离具有至少99重量%芳族原料F的至少99重量%的间二甲苯的方法,所述SMB装置包含12,13或15个具有不同床数的吸附剂床 在供应解吸剂D与提取物E的排出之间的区域1中使用; 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; 和抽提物R的抽出和解吸剂D的供给之间的区域4,由此根据区域(a,b,c,d)的构造进行处理,由此a,b,c和d 表示分别在其中使用的区域1,2,3,4中操作的吸附剂床的数量:根据配置(2,5,3,2)操作的12个吸附床的SMB,或者根据配置(2,5,3,2)操作的SMB或者 13个吸附床根据结构(2,5,4,2)操作,或15个吸附床的SMB(根据配置操作(2,6,4,3))。
    • 10. 发明授权
    • Process and device for simulated moving bed separation with a reduced number of valves
    • 用于模拟移动床分离的过程和装置,减少阀门数量
    • US07582206B2
    • 2009-09-01
    • US11890526
    • 2007-08-07
    • Gerard HotierPhilibert LeflaiveSylvain LouretFrederic Augier
    • Gerard HotierPhilibert LeflaiveSylvain LouretFrederic Augier
    • B01D15/08
    • G01N30/6069B01D15/1842B01D53/0423B01D53/0446B01D2256/24B01D2257/7027B01D2259/4148C07C7/12G01N30/02G01N30/44C07C15/08B01D15/1821
    • A simulated moving bed (SMB) separation device comprising a column, beds Ai of adsorbent separated by plates Pi with a single distribution and extraction network for fluids, in particular feed F, desorbant D, raffinate R and extract B, and a plurality of two-way valves for distribution of said fluids, said valves being limited in number compared with the prior art. The column is divided into a plurality of sectors Sk with 2 or 3 superimposed plates, each sector Sk comprising an external bypass line Lk connected to each plate Pi of Sk via a connector comprising a plate valve Vi. Each line Lk comprises a controlled means for limiting its internal flow, and is connected to each of the fluid networks F, D, R, E via a single line comprising a single controlled two-way isolation valve to supply for sequential supply or withdrawal of the corresponding fluid F, D, R or E towards or from the sector Sk under consideration. The SMB device may be used for the separation of para-xylene or meta-xylene from an aromatic C8 cut.
    • 包括柱的模拟移动床(SMB)分离装置,具有用于流体的单个分配和提取网络的板Pi分离的吸附剂的吸附剂Ai,特别是进料F,脱硫剂D,萃余液R和萃取物E,以及多个二 用于分配所述流体的通道阀,与现有技术相比,所述阀的数量受到限制。 该列被分成具有2或3个叠加板的多个扇区Sk,每个扇区Sk包括通过包括板阀Vi的连接器连接到Sk的每个板Pi的外部旁路管线Lk。 每条线路Lk包括用于限制其内部流动的受控装置,并且经由包括单个受控双向隔离阀的单个管线连接到每个流体网络F,D,R,E,以供供应连续供应或撤出 相应的液体F,D,R或E朝向或来自所考虑的部分Sk。 SMB装置可用于从芳香C8馏分分离对二甲苯或间二甲苯。