Process for the Reduction of Alkylation Catalyst Deactivation
    21.
    发明申请
    Process for the Reduction of Alkylation Catalyst Deactivation 有权
    降低烷基化催化剂失活的方法

    公开(公告)号:US20130225888A1

    公开(公告)日:2013-08-29

    申请号:US13863722

    申请日:2013-04-16

    Abstract: Alkylation systems and methods of minimizing alkylation catalyst regeneration are described herein. The alkylation systems generally include a preliminary alkylation system adapted to receive an input stream including an alkyl aromatic hydrocarbon and contact the input stream with a preliminary alkylation catalyst disposed therein to form a first output stream. The preliminary alkylation catalyst generally includes a zeolite catalyst having a SiO2/Al2O3 ratio of less than about 25. The alkylation systems further include a first alkylation system adapted to receive the first output stream and contact the first output stream with a first alkylation catalyst disposed therein and an alkylating agent to form a second output stream.

    Abstract translation: 本文描述了使烷基化催化剂再生最小化的烷基化系统和方法。 烷基化系统通常包括适于接收包含烷基芳族烃的输入流并将输入流与设置在其中的预置烷基化催化剂接触以形成第一输出流的初步烷基化系统。 初步烷基化催化剂通常包括SiO 2 / Al 2 O 3比小于约25的沸石催化剂。烷基化系统还包括适于接收第一输出流并将第一输出流与置于其中的第一烷基化催化剂接触的第一烷基化系统 和烷基化剂以形成第二输出流。

    Processes for reduction of alkylation catalyst deactivation utilizing stacked catalyst bed
    22.
    发明授权
    Processes for reduction of alkylation catalyst deactivation utilizing stacked catalyst bed 有权
    使用堆叠催化剂床还原烷基化催化剂失活的方法

    公开(公告)号:US08426662B2

    公开(公告)日:2013-04-23

    申请号:US13344390

    申请日:2012-01-05

    CPC classification number: C07C2/66 Y02P20/584 C07C15/02

    Abstract: Alkylation systems and methods of minimizing alkylation catalyst regeneration are discussed herein. The alkylation systems generally include a preliminary alkylation system adapted to receive an input stream including an alkyl aromatic hydrocarbon and contact the input stream with a first preliminary alkylation catalyst disposed therein to form a first output stream. The first preliminary alkylation catalyst generally includes a Y zeolite. The systems further include a first alkylation system adapted to receive the first output stream and contact the first output stream with a first alkylation catalyst disposed therein and an alkylating agent to form a second output stream.

    Abstract translation: 本文讨论了使烷基化催化剂再生最小化的烷基化系统和方法。 烷基化系统通常包括适于接收包含烷基芳族烃的输入流并将输入流与设置在其中的第一初步烷基化催化剂接触以形成第一输出流的初步烷基化系统。 第一初步烷基化催化剂通常包括Y沸石。 所述系统还包括适于接收第一输出流并将第一输出流与设置在其中的第一烷基化催化剂接触的第一烷基化系统和烷基化剂以形成第二输出流。

    Petrochemical feedstock purification
    23.
    发明授权
    Petrochemical feedstock purification 失效
    石化原料净化

    公开(公告)号:US07569741B2

    公开(公告)日:2009-08-04

    申请号:US11412244

    申请日:2006-04-26

    CPC classification number: C07C15/46 C07C13/28 C07C15/44 C07C2601/16

    Abstract: Methods and systems for petrochemical feedstream purification are described herein. The methods generally include providing a petrochemical feedstock, wherein the petrochemical feedstock includes a concentration of polar impurities, contacting the petrochemical feedstock with a washing agent to remove at least a portion of the polar impurities therefrom, separating the washing agent from the petrochemical feedstock to form a purified feedstock and passing the purified feedstock to a petrochemical process. In one embodiment, the petrochemical feedstock includes benzene and the washing agent includes water.

    Abstract translation: 本文描述了石油化学原料流净化的方法和系统。 所述方法通常包括提供石油化学原料,其中石油化学原料包括极性杂质的浓度,使石油化学原料与洗涤剂接触以从其中除去至少一部分极性杂质,从洗涤剂与石油化学原料分离形成 纯化的原料并将纯化的原料送至石化工艺。 在一个实施方案中,石油化学原料包括苯,洗涤剂包括水。

    Dehydrogenation process
    24.
    发明授权
    Dehydrogenation process 失效
    脱氢工艺

    公开(公告)号:US06781024B2

    公开(公告)日:2004-08-24

    申请号:US10074173

    申请日:2002-02-12

    Abstract: Process for the catalytic dehydrogenation of a C2 or C3 alkyl aromatic in which a feedstock containing the alkyl aromatic and steam is supplied into the inlet of a tubular reactor containing a dehydrogenation catalyst. Within the reactor, the feedstock flows through at least a portion of the reactor along a spiral flow path extending longitudinally of the reactor. The resulting vinyl aromatic product is then recovered from a downstream or outlet section of the reactor. The spiral flow path through which the feedstock is passed is located at least adjacent the inlet side of the reactor and at least a portion of the spiral flow path contains a particulate dehydrogenation catalyst. The spiral flow path may extend throughout a major portion of the elongated tubular reactor and may contain a particulate dehydrogenation catalyst in a substantial portion there. The feedstock containing the alkyl aromatic and steam is supplied into a plurality of tubular reactors located within the interior of a dehydrogenation reactor vessel and is arranged in a parallel relationship in which the tubular reactors are spaced laterally from one another and from the interior wall of the reaction vessel.

    Abstract translation: 将含有烷基芳族和蒸汽的原料供给到含有脱氢催化剂的管式反应器的入口中的C2或C3烷基芳族化合物的催化脱氢方法。 在反应器内,原料沿着反应器纵向延伸的螺旋流动路径流过反应器的至少一部分。 然后从反应器的下游或出口部分回收得到的乙烯基芳族化合物。 原料通过的螺旋流动路径至少位于反应器的入口侧,螺旋流路的至少一部分含有颗粒脱氢催化剂。 螺旋流动路径可以延伸穿过细长管式反应器的主要部分,并且可以在其中大部分含有颗粒状脱氢催化剂。 将含有烷基芳族化合物和蒸汽的原料供给到位于脱氢反应器容器内部的多个管式反应器中并且以平行关系排列,其中管式反应器彼此横向间隔开, 反应容器

    Dehydrogenation process
    25.
    发明授权
    Dehydrogenation process 有权
    脱氢工艺

    公开(公告)号:US06380449B1

    公开(公告)日:2002-04-30

    申请号:US09718601

    申请日:2000-11-22

    Abstract: Process for the catalytic dehydrogenation of ethylbenzene in which a feedstock containing ethylbenzene and steam is supplied into the inlet of a tubular reactor containing a dehydrogehation catalyst. Within the reactor, the feedstock flows through at least a portion of the reactor along a spiral flow path extending longitudinally of the reactor. The resulting styrene product is then recovered from a downstream or outlet section of the reactor. The spiral flow path through which the feedstock is passed is located at least adjacent the inlet side of the reactor and at least a portion of the spiral flow path contains a particulate dehydrogenation catalyst. The spiral flow path may extend throughout a major portion of the elongated tubular reactor and may contain a particulate dehydrogenation catalyst in a substantial portion there.

    Abstract translation: 乙苯的催化脱氢方法,其中将含有乙苯和蒸汽的原料供入含有脱氢化催化剂的管式反应器的入口。 在反应器内,原料沿着反应器纵向延伸的螺旋流动路径流过反应器的至少一部分。 然后从反应器的下游或出口部分回收得到的苯乙烯产物。 原料通过的螺旋流动路径至少位于反应器的入口侧,螺旋流路的至少一部分包含颗粒脱氢催化剂。 螺旋流动路径可以延伸穿过细长管式反应器的主要部分,并且可以在其中大部分含有颗粒状脱氢催化剂。

    Gas phase alkylation-liquid transalkylation process
    26.
    发明授权
    Gas phase alkylation-liquid transalkylation process 失效
    气相烷基化 - 液体烷基转移法

    公开(公告)号:US5955642A

    公开(公告)日:1999-09-21

    申请号:US739564

    申请日:1996-10-30

    CPC classification number: C07C15/02 C07C2529/40 C07C2529/70

    Abstract: An alkylation/transalkylation process involving vapor phase alkylation of a benzene feedstock in a multi-stage alkylation zone having a plurality of series connected catalyst beds containing a pentasil aromatic alkylation catalyst, such as silicalite, coupled with intermediate separation and recirculation steps and liquid phase transalkylation over a transalkylation catalyst comprising a molecular sieve having a pore size greater than the pore size of the silicalite. The benzene containing feedstock is supplied to the multi-stage alkylation reaction zone along with a C.sub.2 -C.sub.4 alkylating agent operated under temperature and pressure conditions to maintain the benzene in the gas phase. Alkylated product is recovered from the alkylation zone and supplied to a benzene recovery zone for the separation of the benzene from the alkylation product. Benzene from the benzene recovery zone is recycled to the reaction zone. A higher boiling bottom fraction containing a mixture of monoalkylated and polyalkylated aromatic components is supplied to a secondary separation zone from which a monoalkylated aromatic component, e.g. ethylbenzene, is recovered overhead with a heavier polyalkylated aromatic recovered as a bottom fraction. The bottom fraction may be applied to a tertiary separation zone.

    Abstract translation: 一种烷基化/烷基转移方法,涉及在多级烷基化区中苯原子气相烷基化的方法,该多级烷基化区具有多个串联连接的催化剂床,该催化剂床含有pentasil芳族烷基化催化剂,如硅沸石,加上中间分离和再循环步骤以及液相烷基转移 在包含具有大于硅沸石的孔径的孔径的分子筛的烷基转移催化剂上。 含苯原料与在温度和压力条件下运行的C2-C4烷基化剂一起供应到多级烷基化反应区,以保持苯在气相中。 从烷基化区回收烷基化产物,并将其供应至苯回收区,以将苯与烷基化产物分离。 苯从苯回收区循环到反应区。 将含有单烷基化和多烷基化芳族组分的混合物的较高沸点底部馏分供应到二级分离区,从其分离单烷基化芳族组分,例如, 乙苯,用作为底部馏分回收的较重的多烷基化芳烃塔顶回收。 底部馏分可以施加到第三分离区。

    Stable toluene disproportionation process
    27.
    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。

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