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    Xylene Isomerization Process and Catalyst Therefor
    4.
    发明申请
    Xylene Isomerization Process and Catalyst Therefor 审中-公开
    二甲苯异构化方法及催化剂

    公开(公告)号：US20140171293A1

    公开(公告)日：2014-06-19

    申请号：US14186453

    申请日：2014-02-21

    Applicant: EXXONMOBIL CHEMICAL PATENTS INC.

    Inventor： John D. Ou ,  April D. Ross ,  Doron Levin ,  Mohan Kalyanaraman ,  Wenyih F. Lai

    IPC: B01J29/40

    CPC classification number: B01J29/40 ,  B01J29/70 ,  B01J29/90 ,  B01J38/10 ,  C07C5/2737 ,  C07C2529/40 ,  C07C2529/70 ,  Y02P20/52 ,  Y02P20/584 ,  C07C15/08

    Abstract: The invention concerns a xylenes isomerization process for the production of equilibrium or near-equilibrium xylenes. The process utilizes a catalyst comprising HZSM-5 or MCM-49 and process conditions including a temperature of less than 295° C. and a pressure sufficient to maintain the xylenes in liquid phase. In embodiments, the process can be operated in a continuous mode with ppm levels of dissolved H2 in the feed and in other embodiments in a cyclic mode without the H2 in feed but with periodic regenerations using a feed having low ppm levels of H2.

    Abstract translation: 本发明涉及用于产生平衡或近平衡二甲苯的二甲苯异构化方法。 该方法使用包含HZSM-5或MCM-49的催化剂和包括低于295℃的温度和足以将二甲苯保持在液相中的压力的​​工艺条件。 在实施方案中，该方法可以以进料中的ppm水平的溶解的H 2在进料中以及在其它实施方案中以循环模式操作，而不使用进料中的H 2，而是使用具有低ppm水平的H 2的进料进行周期性再生。

    Energy Efficient Processes for Xylenes Production
    5.
    发明申请
    Energy Efficient Processes for Xylenes Production 有权
    二甲苯生产的能源效率过程

    公开(公告)号：US20150299071A1

    公开(公告)日：2015-10-22

    申请号：US14443945

    申请日：2013-11-21

    Applicant: EXXONMOBIL CHEMICAL PATENTS INC.

    Inventor： John D. Ou ,  Jeevan S. Abichandani

    IPC: C07C5/27

    CPC classification number: C10G45/58 ,  C07C5/2729 ,  C07C15/08

    Abstract: The invention is directed to a process to produce para-xylene and, optionally, ortho-xylene, including coupling two in-series xylenes separation systems with two parallel isomerization systems for energy savings and/or productivity increases.

    Abstract translation: 本发明涉及一种生产对二甲苯和任选的邻二甲苯的方法，包括将两个串联二甲苯分离系统与两个平行的异构化体系相结合，用于节能和/或生产率增加。

    Conversion of Methanol to Olefins and Para-Xylene
    6.
    发明申请
    Conversion of Methanol to Olefins and Para-Xylene 审中-公开
    甲醇转化为烯烃和对二甲苯

    公开(公告)号：US20150175499A1

    公开(公告)日：2015-06-25

    申请号：US14560889

    申请日：2014-12-04

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： John D. Ou ,  Nikolaos Soultanidis ,  Mayank Shekhar ,  Samia Ilias ,  Helge Jaensch ,  Stephen J. McCarthy

    IPC: C07C1/22

    CPC classification number: C07C1/22 ,  C07C1/24 ,  C07C2/64 ,  C07C5/2729 ,  C07C6/00 ,  C07C6/06 ,  C07C2529/40 ,  C10G3/49 ,  C10G29/205 ,  C10G2400/30 ,  Y02P30/20 ,  Y02P30/42

    Abstract: Methods are provided for conversion of methanol and/or dimethyl ether to aromatics, such as a para-xylene, and olefins, such as ethylene and propylene. The methods can be used in conjunction with molecular sieve (zeolite) catalysts that are prepared for use in conjunction with selected effective conversion conditions. The combination of a catalyst and a corresponding effective conversion condition can allow for improved yield aromatics and olefins generally; improved yield of desired aromatics and olefins, such as para-xylene, ethylene, and/or propylene; reduced production of less desirable side products, such as methane, CO, CO2, and/or coke; or a combination thereof. The preparation of the catalyst can include modification of the catalyst with a transition metal, such as Zn or Ga. The preparation of the catalyst can also include steaming of the catalyst. In some aspects, the preparation of the catalyst can further include modifying the catalyst with phosphorous.

    Abstract translation: 提供了用于将甲醇和/或二甲醚转化为芳族化合物如对二甲苯和烯烃如乙烯和丙烯的方法。 这些方法可以与准备与选择的有效转化条件结合使用的分子筛（沸石）催化剂结合使用。 催化剂和相应的有效转化条件的组合可以允许通常改善产率芳族化合物和烯烃; 所需芳族化合物和烯烃的产率提高，如对二甲苯，乙烯和/或丙烯; 降低生产较不理想的副产物，如甲烷，CO，CO2和/或焦炭; 或其组合。 催化剂的制备可以包括用过渡金属如Zn或Ga改性催化剂，催化剂的制备还可以包括蒸发催化剂。 在一些方面，催化剂的制备可进一步包括用磷改性催化剂。

    Paraxylene separation process
    9.
    发明授权
    Paraxylene separation process 有权

    公开(公告)号：US09725378B2

    公开(公告)日：2017-08-08

    申请号：US14624861

    申请日：2015-02-18

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： John D. Ou ,  Jeevan S. Abichandani

    IPC: C07C5/27 ,  C07C6/12 ,  C07C5/22 ,  C07C4/02 ,  C07C6/06 ,  C07C7/12

    CPC classification number: C07C5/222 ,  C07C4/02 ,  C07C5/2732 ,  C07C5/277 ,  C07C6/06 ,  C07C7/12 ,  C07C2529/40 ,  C07C15/08

    Abstract: The invention relates to a p-xylene separation process wherein at least a portion of ethylbenzene present in an aromatics-containing feed is removed prior to isomerization. Aspects of the invention provide a process for producing p-xylene. The process includes providing a first mixture comprising ≧5.0 wt. % of aromatic C8 isomers, the C8 isomers comprising p-xylene and ethylbenzene. A p-xylene-containing portion and an ethylbenzene-containing portion are separated from the first mixture in a first separation stage to form a p-xylene-depleted raffinate. The first separation stage can include at least one simulated moving-bed adsorptive separation stage. At least a portion the p-xylene-depleted raffinate in the liquid phase is reacted to produce a reactor effluent comprising aromatic C8 isomers. The first mixture can be combined with ≧50.0 wt. % of the reactor effluent's aromatic C8 isomers. The combining can be carried out before and/or during the separating of the p-xylene and ethylbenzene portions.

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