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    Multi-phase alkylation process
    2.
    发明公开
    Multi-phase alkylation process 有权
    Mehrphasenalkylierungsverfahren

    公开(公告)号：EP1211233A9

    公开(公告)日：2002-11-20

    申请号：EP01204558.9

    申请日：2001-11-26

    申请人： FINA TECHNOLOGY, INC.

    发明人： Merrill, James T. ,  Butler, James R.

    IPC分类号： C07C15/073 ,  C07C2/66

    CPC分类号： C07C15/073 ,  C07C2/66 ,  C07C2529/035 ,  C07C2529/08 ,  C07C2529/70 ,  Y02P20/544

    摘要： A process for the production of ethylbenzene by the gas phase alkylation of benzene over a molecular sieve aromatic alkylation catalyst followed by liquid phase alkylation of the product of the gas phase alkylation. A feedstock containing benzene and ethylene is supplied to a first alkylation reaction zone containing a molecular sieve aromatic alkylation catalyst. The reaction zone is operated at temperature and pressure conditions to cause gas phase ethylation of the benzene with the production of an alkylation product comprising a mixture of ethylbenzene and polyalkylated aromatic components including diethylbenzene. The output from the first alkylation reaction zone is supplied, at least in part, to a second alkylation zone which is operated in the liquid phase or in the supercritical region followed by supply to an intermediate recovery zone for the separation and recovery of ethylbenzene and a polyalkylated aromatic compound component including diethylbenzene. At least a portion of the polyalkylated component is supplied along with benzene to a transalkylation reaction zone operated in the liquid phase.

    Multi-phase alkylation process
    3.
    发明公开
    Multi-phase alkylation process 有权
    多相烷基化过程

    公开(公告)号：EP1211233A1

    公开(公告)日：2002-06-05

    申请号：EP01204558.9

    申请日：2001-11-26

    申请人： FINA TECHNOLOGY, INC.

    发明人： Merrill, James T. ,  Butler, James R.

    IPC分类号： C07C15/073 ,  C07C2/66

    CPC分类号： C07C15/073 ,  C07C2/66 ,  C07C2529/035 ,  C07C2529/08 ,  C07C2529/70 ,  Y02P20/544

    摘要： A process for the production of ethylbenzene by the gas phase alkylation of benzene over a molecular sieve aromatic alkylation catalyst followed by liquid phase alkylation of the product of the gas phase alkylation. A feedstock containing benzene and ethylene is supplied to a first alkylation reaction zone containing a molecular sieve aromatic alkylation catalyst. The reaction zone is operated at temperature and pressure conditions to cause gas phase ethylation of the benzene with the production of an alkylation product comprising a mixture of ethylbenzene and polyalkylated aromatic components including diethylbenzene. The output from the first alkylation reaction zone is supplied, at least in part, to a second alkylation zone which is operated in the liquid phase or in the supercritical region followed by supply to an intermediate recovery zone for the separation and recovery of ethylbenzene and a polyalkylated aromatic compound component including diethylbenzene. At least a portion of the polyalkylated component is supplied along with benzene to a transalkylation reaction zone operated in the liquid phase.

    摘要翻译： 通过苯在分子筛芳族烷基化催化剂上的气相烷基化随后气相烷基化产物的液相烷基化生产乙苯的方法。 将含有苯和乙烯的原料供应至含有分子筛芳族烷基化催化剂的第一烷基化反应区。 反应区在温度和压力条件下操作以引起苯的气相乙基化，同时产生包含乙苯和多烷基化芳族组分（包括二乙苯）的混合物的烷基化产物。 第一烷基化反应区的输出至少部分地供应到第二烷基化区，该第二烷基化区在液相或超临界区中操作，随后供应到中间回收区以分离和回收乙苯和 包括二乙苯的多烷基化芳族化合物组分。 将至少一部分多烷基化组分与苯一起送入在液相中操作的烷基转移反应区。

    Gas phase alkylation-liquid phase transalkylation process
    4.
    发明公开
    Gas phase alkylation-liquid phase transalkylation process 有权
    Verfahren zur Alkylierung in der Gasphase - zur Transalkylierung in derflüssigenPhase

    公开(公告)号：EP1043296A2

    公开(公告)日：2000-10-11

    申请号：EP00201106.2

    申请日：2000-03-27

    申请人： FINA TECHNOLOGY, INC.

    发明人： Ghosh, Ashim Kumar ,  Merrill, James T. ,  Butler, James R.

    IPC分类号： C07C15/00 ,  C07C2/64 ,  C07C5/22

    CPC分类号： C07C15/073 ,  C07C2/66 ,  C07C2529/08 ,  C07C2529/40

    摘要： Process for the production of ethylbenzene by alkylation over a silicalite alkylation catalyst with the subsequent transalkylation of diethylbenzene with the alkylation catalyst and conditions selected to retard xylene production and also heavies production. A feedstock containing benzene and ethylene is applied to a multi-stage alkylation reaction zone having a plurality of series-connected catalyst beds containing a pentasil molecular sieve alkylation catalyst which is silicalite of a predominantly monoclinic symmetry having a silica/alumina ratio of at least 275. The feedstock is supplied to the alkylation reaction zone to cause gas-phase ethylation of benzene at a flow rate to provide a space velocity of benzene over the catalyst to produce a xylene concentration in the product of about 600 ppm or less based upon the ethylbenzene content. Periodically the space velocity may be increased to a value which is greater than the space velocity associated with a minimum concentration of diethylbenzene in the alkylation product such that diethylbenzene production is enhanced while minimizing any attendant transalkylation reactions within the alkylation reaction zone. This is accompanied by a relatively low xylene content in the product, specifically no more than 600 ppm based upon the ethylbenzene in the product. The output from the alkylation reactor is applied to an intermediate recovery zone for the separation and recovery of ethylbenzene with the recovery of a polyalkylated aromatic component which is supplied along with benzene to a transalkylation reaction zone where the polyalkylated aromatic fraction is subject to disproportionation to provide a reduced diethylbenzene content and an enhanced ethylbenzene content. A specific monoclinic silicalite alkylation catalyst has a silica/alumina ratio of at least 300 and has a crystal size of less than one micron.

    摘要翻译： 通过在硅沸石烷基化催化剂上烷基化生产乙苯的方法，随后用烷基化催化剂对二乙基苯进行烷基转移和选择用于延迟二甲苯生产和重质生产的条件。 含有苯和乙烯的原料被施加到具有多个串联连接的催化剂床的多级烷基化反应区，该催化剂床含有pentasil分子筛烷基化催化剂，它是主要是单斜对称的硅沸石，二氧化硅/氧化铝比为至少275 将原料供应到烷基化反应区，以使流速进行苯的气相乙基化，以提供催化剂上苯的空间速度，以产生基于乙苯约600ppm或更低的产物中的二甲苯浓度 内容。 定期地，空间速度可以增加到大于与烷基化产物中二乙基苯的最小浓度相关联的空间速度的值，使得二乙苯产生增强，同时最小化在烷基化反应区内的任何伴随的烷基转移反应。 这伴随着产物中二甲苯含量相对较低，特别是不超过600ppm，基于产品中的乙苯。 将烷基化反应器的输出应用于中间回收区，用于分离和回收乙苯，回收与苯一起供应的多烷基化芳族组分至烷基转移反应区，其中多烷基化芳族部分进行歧化以提供 二乙苯含量降低，乙苯含量增加。 特定的单斜硅沸石烷基化催化剂具有至少300的二氧化硅/氧化铝比例并且具有小于1微米的晶体尺寸。

    Process for purifying styrene monomer feedstock prior to polymerization
    6.
    发明公开
    Process for purifying styrene monomer feedstock prior to polymerization 有权
    Verfahren zur Reinigung von Styren Monomer-Einsatzstoffen vor der Polymerisation

    公开(公告)号：EP1334959A2

    公开(公告)日：2003-08-13

    申请号：EP03075396.6

    申请日：2003-02-11

    申请人： FINA TECHNOLOGY, INC.

    发明人： Merrill, James T.

    IPC分类号： C07C7/20 ,  C07C5/09

    CPC分类号： C07C5/09 ,  C07C7/20 ,  Y02P20/52 ,  C07C15/46 ,  C07C11/04

    摘要： A process is disclosed which provides for the reduction of phenylacetylene levels in styrene monomer feedstreams, which process utilizes a normal styrene inhibitor additive, such as an hydroxylamine, injected into the styrene monomer feedstream immediately upstream of the phenylacetylene reduction reactor.

    摘要翻译： 公开了一种方法，其提供苯乙烯单体进料流中苯乙炔含量的降低，该方法利用在苯乙炔还原反应器的紧邻上游注入到苯乙烯单体进料流中的常规苯乙烯抑制剂添加剂，例如羟胺。