Stable toluene disproportionation process
    11.
    发明授权
    Stable toluene disproportionation process 失效
    甲苯歧化过程稳定

    公开(公告)号:US5475180A

    公开(公告)日:1995-12-12

    申请号:US317511

    申请日:1994-10-04

    CPC classification number: C07C6/123

    Abstract: A process is provided for the disproportionation of a toluene feedstock over a metal promoted mordenite catalyst. The catalyst may contain between 1.0-1.5 weight percent nickel. The toluene feedstock is supplied to the reaction zone and into contact with the catalyst. The reaction zone is operated under disproportionation conditions. During disproportionation, heavy aromatic reformates, in concentration of at least 4 weight percent, are introduced into the reaction zone. Disproportionation product containing benzene and xylene is continuously withdrawn. The addition of the heavy aromatic reformate does not adversely affect toluene conversion rates, product selectivity to benzene, catalyst activity or catalyst life. Moreover, production of xylenes increase at the expense of production of heavies.

    Abstract translation: 提供了一种用于在金属促进的丝光沸石催化剂上歧化甲苯原料的方法。 催化剂可以含有1.0-1.5重量%的镍。 将甲苯原料供应到反应区并与催化剂接触。 反应区在歧化条件下运行。 在歧化过程中,将浓度至少为4重量%的重质芳族重整油引入反应区。 含有苯和二甲苯的歧化产品不断退出。 加入重芳香重整油不会对甲苯转化率,产物对苯的选择性,催化剂活性或催化剂寿命产生不利影响。 此外,二甲苯的生产以重的生产为代价增加。

    Aromatic conversion process employing low surface area zeolite Y
    12.
    发明授权
    Aromatic conversion process employing low surface area zeolite Y 失效
    使用低表面积沸石Y的芳香族转化方法

    公开(公告)号:US06897346B1

    公开(公告)日:2005-05-24

    申请号:US09329502

    申请日:1999-06-10

    CPC classification number: C07C6/126 C07C15/073 C07C2529/40

    Abstract: A process for the transalkylation of polyalkylated aromatic compounds over a high porosity zeolite-Y molecular sieve having a surface area of no more than 500 m2/g. A feedstock comprising a polyalkylated aromatic component, including polyalkylbenzenes in which the predominant alkyl substituents contain from 2 to 4 carbon atoms, is supplied to a transalkylation reaction zone containing the high porosity zeolite-Y catalyst. Benzene is also supplied to the transalkylation zone, and the reaction zone is operated under temperature and pressure conditions to maintain the polyalkylated aromatic component in the liquid phase and which are effective to cause disproportionation of the polyalkylated aromatic component to arrive a disproportionation product having a reduced polyalkylbenzene content and an enhanced monoalkylbenzene content. An alkylation reaction zone is provided which contains a molecular sieve aromatic alkylation catalyst having an average pore size which is less than the average pore size of the average pore size of the high porosity zeolite-Y. A feedstock comprising benzene in a C2-C4 alkylating agent is supplied to the alkylation reaction zone which is operated under conditions to produce alkylation of the benzene by the alkylating agent in the presence of the molecular sieve alkylation catalyst. The alkylation product from the alkylation reaction zone is supplied to an intermediate recovery zone for the separation and recovery of a monoalkylbenzene, e.g. ethylbenzene, from the alkylation product; together with the recovery of a polyalkylated aromatic component employing a dialkylbenzene, e.g. diethylbenzene. The polyalkylated aromatic component is employed in at least a portion of the feedstream supplied to the transalkylation reactor.

    Abstract translation: 在多孔烷基化芳族化合物在表面积不超过500m 2 / g的高孔隙率沸石-Y分子筛上烷基转移的方法。 包含多烷基化芳族组分的原料被供应到包含高孔隙率沸石-Y催化剂的烷基转移反应区,包括其中主要烷基取代基含有2至4个碳原子的聚烷基苯。 苯也被供应到烷基转移区,并且反应区在温度和压力条件下操作以将多烷基化芳族组分保持在液相中,并且有效地引起多烷基化芳族组分的歧化,以得到具有减少的歧化产物 多烷基苯含量和增强的单烷基苯含量。 提供烷基化反应区,其含有平均孔径小于高孔隙率沸石-Y的平均孔径的平均孔径的分子筛芳族烷基化催化剂。 将包含C 2 -C 4烷基化剂中的苯的原料供给到烷基化反应区,该烷基化反应区在烷基化试剂生成苯烷基化的条件下操作 存在分子筛烷基化催化剂。 来自烷基化反应区的烷基化产物被供应到中间回收区,用于分离和回收单烷基苯,例如。 乙基苯,来自烷基化产物; 以及采用二烷基苯的多烷基化芳族组分的回收。 二乙基苯。 多烷基化芳族组分用于供应至烷基转移反应器的进料流的至少一部分。

    Multi-phase alkylation process
    13.
    发明授权
    Multi-phase alkylation process 失效
    多相烷基化工艺

    公开(公告)号:US06376729B1

    公开(公告)日:2002-04-23

    申请号:US09729032

    申请日:2000-12-04

    Abstract: 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.

    Abstract translation: 通过在分子筛芳族烷基化催化剂上苯气相烷基化生产乙苯的方法,随后气相烷基化产物的液相烷基化。 将含有苯和乙烯的原料供给到含有分子筛芳烃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,以产生包含乙苯和多烷基化芳族组分(包括二乙基苯)的混合物的烷基化产物的苯气相乙基化。 第一烷基化反应区的输出至少部分地供应到在液相或超临界区域中操作的第二烷基化区,然后供应到用于分离和回收乙苯的中间回收区和 多烷基化芳族化合物组分,包括二乙基苯。

    Multi-phase alkylation-transalkylation process
    14.
    发明授权
    Multi-phase alkylation-transalkylation process 失效
    多相烷基化 - 烷基转移法

    公开(公告)号:US06268542B1

    公开(公告)日:2001-07-31

    申请号:US09378819

    申请日:1999-08-23

    Abstract: A process for the production of ethylbenzene by the alkylation of benzene over a molecular sieve aromatic alkylation catalyst followed by transalkylation of polyalkylated aromatic components and then liquid 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 with xylene present in only small amounts. The output from the alkylation reaction zone is supplied to an intermediate recovery zone for the separation and recovery of ethybenzene, 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. Disproportionation product from the transalkylaton reaction zone is supplied to a second alkylation zone containing a molecular sieve aromatic alkylation catalyst. Ethylene is also supplied to the second alkylation zone which is operated under temperature and pressure conditions to cause liquid phase ethylation of the benzene. The alkylation product from the second alkylation zone is supplied to the aforementioned intermediate recovery zone.

    Abstract translation: 一种通过在分子筛芳族烷基化催化剂上烷基化苯然后经多烷基化芳族组分的烷基转移然后进行液相烷基化来生产乙苯的方法。 将含有苯和乙烯的原料供给到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,以产生包含乙苯和多烷基化芳族组分(包括二乙基苯)与二甲苯的混合物的烷基化产物的气相乙基化,其中二甲苯仅以少量存在。 将烷基化反应区的输出物供应到中间回收区,用于分离和回收乙苯,包括二乙基苯的多烷基化芳族化合物组分。 至少一部分多烷基化组分与苯一起供应到在液相中操作的烷基转移反应区。 来自转烷基转移反应区的歧化产物供给含有分子筛芳族烷基化催化剂的第二烷基化区。 乙烯也被供给到在温度和压力条件下操作以引起苯的液相乙基化的第二烷基化区。 将来自第二烷基化区的烷基化产物供给到上述中间回收区。

    Gas phase alkylation-liquid phase transalkylation process
    15.
    发明授权
    Gas phase alkylation-liquid phase transalkylation process 失效
    气相烷基化 - 液相烷基转移法

    公开(公告)号:US5847255A

    公开(公告)日:1998-12-08

    申请号:US861206

    申请日:1997-05-21

    Abstract: 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.

    Abstract translation: 通过在硅沸石烷基化催化剂上烷基化制备乙苯的方法,随后使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。 将含有苯和乙烯的原料施加到多级烷基化反应区,该多段烷基化反应区具有多个串联连接的催化剂床,该催化剂床含有pentasil分子筛烷基化催化剂,其为主要单斜对称的硅沸石,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,以提供苯在催化剂上的空速,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的二乙基苯的最小浓度相关联的空间速度的值,使得二苯基产生增强,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。 这伴随产物中相对较低的二甲苯含量,特别是不超过600ppm,基于产物中的乙苯。 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,回收与苯一起供给的烷基化芳族组分到烷基转移反应区,其中多烷基化芳族部分经过歧化以提供 二乙苯含量降低,乙苯含量增加。

    Process for ethylbenzene production

    公开(公告)号:US08802911B2

    公开(公告)日:2014-08-12

    申请号:US13868505

    申请日:2013-04-23

    Inventor: James R. Butler

    CPC classification number: C07C2/66 C07C2529/70 Y02P20/584 C07C15/073

    Abstract: A method of producing an alkylaromatic by the alkylation of an aromatic with an alkylating agent, such as producing ethylbenzene by an alkylation reaction of benzene, is disclosed. The method includes using an H-beta catalyst to minimize process upsets due to alkylation catalyst deactivation and the resulting catalyst regeneration or replacement. The H-beta catalyst can be used in a preliminary alkylation reactor that is located upstream of the primary alkylation reactor. The H-beta catalyst used in a preliminary alkylation reactor can reduce the deactivation of the catalyst in the primary alkylation reactor.

    Dilute ethylene alkylation of benzene
    18.
    发明授权
    Dilute ethylene alkylation of benzene 有权
    苯稀释乙烯烷基化

    公开(公告)号:US08742190B2

    公开(公告)日:2014-06-03

    申请号:US13178091

    申请日:2011-07-07

    Inventor: James R. Butler

    Abstract: Methods of forming ethylbenzene are described herein. In one embodiment, the method includes contacting dilute ethylene with benzene in the presence of an alkylation catalyst to form ethylbenzene, wherein such contact occurs in a reaction zone containing a gaseous phase and recovering ethylbenzene from the reaction zone.

    Abstract translation: 本文描述了形成乙苯的方法。 在一个实施方案中,该方法包括在烷基化催化剂存在下使稀乙烯与苯接触以形成乙苯,其中这种接触在含有气相的反应区中发生并从反应区回收乙苯。

    Production of EB from toluene and methane
    19.
    发明授权
    Production of EB from toluene and methane 有权
    从甲苯和甲烷生产EB

    公开(公告)号:US08734737B2

    公开(公告)日:2014-05-27

    申请号:US13604760

    申请日:2012-09-06

    Abstract: A process for making ethylbenzene and/or styrene by reacting toluene with methane is disclosed. In one embodiment the process can include reacting toluene with methane to form a product stream comprising ethylbenzene and further processing the ethylbenzene to form styrene in an existing styrene production facility.

    Abstract translation: 公开了通过使甲苯与甲烷反应制备乙苯和/或苯乙烯的方法。 在一个实施方案中,该方法可以包括使甲苯与甲烷反应以形成包含乙苯的产物流,并进一步处理乙苯以在现有的苯乙烯生产设备中形成苯乙烯。

    Oxidative coupling of hydrocarbons as heat source
    20.
    发明授权
    Oxidative coupling of hydrocarbons as heat source 有权
    碳氢化合物作为热源的氧化偶联

    公开(公告)号:US08710286B2

    公开(公告)日:2014-04-29

    申请号:US12416074

    申请日:2009-03-31

    Inventor: James R. Butler

    CPC classification number: C07C4/025 C07C2/82 C07C5/327 C07C11/04 C07C15/46

    Abstract: A process for the coupling of hydrocarbons and utilizing the heat energy produced by the reaction is disclosed. In one embodiment the process can include reacting methane with oxygen to form a product stream containing ethane and further processing the ethane to ethylene in an existing ethylene production facility while using the heat energy produced by the reaction within the facility.

    Abstract translation: 公开了一种用于偶联烃并利用由反应产生的热能的方法。 在一个实施方案中,该方法可以包括使甲烷与氧反应形成含有乙烷的产物流,并且在现有乙烯生产设备中进一步处理乙烯至乙烯,同时使用由设备内的反应产生的热能。

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