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    Process for co-producing para-xylene and styrene
    41.
    发明授权
    Process for co-producing para-xylene and styrene 有权
    共生产对二甲苯和苯乙烯的方法

    公开(公告)号：US07592499B2

    公开(公告)日：2009-09-22

    申请号：US10666523

    申请日：2003-09-22

    申请人： Luc Wolff ,  Philibert Leflaive ,  Alain Methivier

    发明人： Luc Wolff ,  Philibert Leflaive ,  Alain Methivier

    IPC分类号： C07C7/00

    CPC分类号： C07C7/12 ,  C07C5/3332 ,  C07C7/13 ,  C07C2523/14 ,  C07C2523/86 ,  C07C15/46 ,  C07C15/08 ,  C07C15/073

    摘要： A process for co-producing para-xylene and styrene from a feed (1) of hydrocarbons containing xylenes and ethylbenzene is described, the process comprising the following succession of steps: a step for separating the feed in a simulated moving bed in an adsorption column (6) containing beds of an adsorbent, from which an extract that is rich in para-xylene (7a) of at least 99.7% purity and at least one raffinate (7b) containing ethylbenzene, ortho-xylene, meta-xylene and a very small quantity of para-xylene is withdrawn; a step for dehydrogenating (10) the ethylbenzene contained in the raffinate (7b) to styrene; at least one step for primary separation of the stream (11) from the dehydrogenation step (10), to eliminate by-products; a step for separating the purified mixture (18) derived from the stream (11) containing styrene, unconverted ethylbenzene, meta-xylene and ortho-xylene, from which a stream (21a) that is rich in styrene of at least 99.8% purity and a stream (21b) containing unconverted ethylbenzene, meta-xylene and ortho-xylene is withdrawn; and a step for isomerising the stream (21b), the effluent being recycled to the adsorption column (6).

    摘要翻译： 描述了从含有二甲苯和乙苯的烃的进料（1）共同生产对二甲苯和苯乙烯的方法，该方法包括以下连续步骤：在吸附塔中的模拟移动床中分离进料的步骤 （6）含有吸附剂的床，富含至少99.7％纯度的对二甲苯（7a）的提取物和至少一种含有乙苯，邻二甲苯，间二甲苯和至少一种二甲苯的提余物（7b） 撤回少量的对二甲苯; （10）将残液（7b）中所含的乙苯脱氢成苯乙烯的步骤; 用于从脱氢步骤（10）中初始分离料流（11）的至少一个步骤，以消除副产物; 用于分离源自含有苯乙烯，未转化的乙苯，间二甲苯和邻二甲苯的物流（11）的纯化的混合物（18）的步骤，其中富含至少99.8％纯度的苯乙烯流（21a）和 取出含有未转化的乙苯，间二甲苯和邻二甲苯的料流（21b） 和将物流（21b）异构化的步骤，将废液再循环至吸附塔（6）。

    Process for co-production of paraxylene, metaxylene and/or orthoxylene
    42.
    发明授权
    Process for co-production of paraxylene, metaxylene and/or orthoxylene 有权
    共生产对二甲苯，间二甲苯和/或邻二甲苯的方法

    公开(公告)号：US06841714B2

    公开(公告)日：2005-01-11

    申请号：US10247830

    申请日：2002-09-20

    申请人： Philibert Leflaive ,  Luc Wolff ,  Gérard Hotier ,  Alain Methivier

    发明人： Philibert Leflaive ,  Luc Wolff ,  Gérard Hotier ,  Alain Methivier

    IPC分类号： C07C7/00 ,  C07C7/13 ,  C07C15/08 ,  C07C7/12

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

    摘要： 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.

    摘要翻译： 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。

    Process for co-producing para-xylene and metaxylene, comprising two separation steps
    43.
    发明授权
    Process for co-producing para-xylene and metaxylene, comprising two separation steps 有权
    共同生产对二甲苯和间二甲苯的方法，包括两个分离步骤

    公开(公告)号：US06838588B2

    公开(公告)日：2005-01-04

    申请号：US10108392

    申请日：2002-03-29

    申请人： Philibert Leflaive ,  Alain Methivier ,  Gérard Hotier

    发明人： Philibert Leflaive ,  Alain Methivier ,  Gérard Hotier

    IPC分类号： C07C7/04 ,  C07C7/00 ,  C07C7/12 ,  C07C7/13 ,  C07C15/08

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

    摘要： 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%.

    摘要翻译： 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。

    Coproduction process for para-xylene and ortho-xylene comprising two separation steps
    44.
    发明授权
    Coproduction process for para-xylene and ortho-xylene comprising two separation steps 失效
    对二甲苯和邻二甲苯的共同生产方法包括两个分离步骤

    公开(公告)号：US06828470B2

    公开(公告)日：2004-12-07

    申请号：US10321724

    申请日：2002-12-18

    申请人： Philibert Leflaive ,  Luc Wolff ,  Alain Methivier ,  Gérard Hotier

    发明人： Philibert Leflaive ,  Luc Wolff ,  Alain Methivier ,  Gérard Hotier

    IPC分类号： C07C712

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

    摘要： A coproduction process for ortho-xylene and para-xylene starting with a batch of hydrocarbons comprises a simulated counter-current fluidized bed system in a chromatographic column (6) containing at least five zones, comprising injection (1) of the batch and injection (2) of desorption agent and delivering an extract (3), a refined product (5), and an intermediate refined product (4). Refined product (5), richer in ortho-xylene than the intermediate refined product, is distilled (9) to extract desorption agent (15) and is injection, according to the second step of the process, into a simulated counter-current fluidized bed system (17) delivering an extract (18) and a refined product (19) continuously.

    摘要翻译： 从一批烃开始的邻二甲苯和对二甲苯的共生产方法包括在色谱柱（6）中的模拟逆流流化床系统，其包含至少五个区域，包括批料和注射（1）的注射（1） 2）的解吸剂和递送提取物（3），精制产物（5）和中间精制产物（4）。 精制产品（5），比中间精制产物富含邻二甲苯，蒸馏（9）提取脱附剂（15），并根据该方法的第二步将注射成模拟逆流流化床 系统（17）连续递送提取物（18）和精制产品（19）。