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    Transalkylation of heavy aromatic hydrocarbon feedstocks
    2.
    发明授权
    Transalkylation of heavy aromatic hydrocarbon feedstocks 有权
    重芳香烃原料的烷基转移

    公开(公告)号：US09006125B2

    公开(公告)日：2015-04-14

    申请号：US13899854

    申请日：2013-05-22

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： Doron Levin ,  April D. Ross ,  James H. Beech, Jr.

    IPC: B01J29/06 ,  B01J8/04 ,  B01J29/064 ,  B01J29/072 ,  B01J29/076 ,  B01J29/44 ,  B01J29/46 ,  B01J29/70 ,  B01J29/76 ,  B01J35/00 ,  B01J35/02 ,  B01J37/20 ,  C07C6/12 ,  B01J37/00

    CPC classification number: B01J8/04 ,  B01J29/064 ,  B01J29/072 ,  B01J29/076 ,  B01J29/44 ,  B01J29/46 ,  B01J29/7034 ,  B01J29/7669 ,  B01J35/0006 ,  B01J35/023 ,  B01J37/0009 ,  B01J37/20 ,  B01J2229/42 ,  C07C6/12 ,  C07C2529/42 ,  Y02P20/52 ,  C07C15/08

    Abstract: In a process for producing xylene by transalkylation of a C9+ aromatic hydrocarbon feedstock with a C6 and/or C7 aromatic hydrocarbon, the C9+ aromatic hydrocarbon feedstock, at least one C6 and/or C7 aromatic hydrocarbon and hydrogen are contacted with a first catalyst comprising (i) a first molecular sieve having a Constraint Index in the range of about 3 to about 12 and (ii) at least first and second different metals or compounds thereof of Groups 6 to 12 of the Periodic Table of the Elements. Contacting with the first catalyst is conducted under conditions effective to dealkylate aromatic hydrocarbons in the feedstock containing C2+ alkyl groups and to saturate C2+ olefins formed so as to produce a first effluent. At least a portion of the first effluent is then contacted with a second catalyst comprising a second molecular sieve having a Constraint Index less than 3 under conditions effective to transalkylate C9+ aromatic hydrocarbons with said at least one C6-C7 aromatic hydrocarbon to form a second effluent comprising xylene.

    Abstract translation: 在通过C 9 +芳族烃原料与C 6和/或C 7芳烃的烷基转移生产二甲苯的方法中，C 9 +芳烃原料，至少一种C 6和/或C 7芳烃和氢与第一催化剂接触，所述第一催化剂包含（ i）具有在约3至约12范围内的约束指数的第一分子筛和（ii）至少元素周期表第6至12族的第一和第二不同金属或其化合物。 与第一催化剂接触在有效地使含有C 2 +烷基的原料中芳族烃脱烷基化并使形成的C 2 +烯烃饱和以产生第一流出物的条件下进行。 然后至少一部分第一流出物与包含第二分子筛的第二催化剂接触，该第二催化剂在有效使C 9+芳族烃与所述至少一种C 6 -C 7芳族烃烷基转移的条件下具有小于3的约束指数，以形成第二流出物 包括二甲苯。

    Xylene Isomerization Process and Catalyst Therefor
    3.
    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。

    Transalkylation Of Heavy Aromatic Hydrocarbon Feedstocks
    5.
    发明申请
    Transalkylation Of Heavy Aromatic Hydrocarbon Feedstocks 有权
    重芳香烃原料的烷基转移

    公开(公告)号：US20130259775A1

    公开(公告)日：2013-10-03

    申请号：US13899854

    申请日：2013-05-22

    Applicant: ExxonMobil Chemical Patents Inc.

    Inventor： Doron Levin ,  April D. Ross ,  James H. Beech, JR.

    IPC: B01J8/04

    CPC classification number: B01J8/04 ,  B01J29/064 ,  B01J29/072 ,  B01J29/076 ,  B01J29/44 ,  B01J29/46 ,  B01J29/7034 ,  B01J29/7669 ,  B01J35/0006 ,  B01J35/023 ,  B01J37/0009 ,  B01J37/20 ,  B01J2229/42 ,  C07C6/12 ,  C07C2529/42 ,  Y02P20/52 ,  C07C15/08

    Abstract: In a process for producing xylene by transalkylation of a C9+ aromatic hydrocarbon feedstock with a C6 and/or C7 aromatic hydrocarbon, the C9+ aromatic hydrocarbon feedstock, at least one C6 and/or C7 aromatic hydrocarbon and hydrogen are contacted with a first catalyst comprising (i) a first molecular sieve having a Constraint Index in the range of about 3 to about 12 and (ii) at least first and second different metals or compounds thereof of Groups 6 to 12 of the Periodic Table of the Elements. Contacting with the first catalyst is conducted under conditions effective to dealkylate aromatic hydrocarbons in the feedstock containing C2+ alkyl groups and to saturate C2+ olefins formed so as to produce a first effluent. At least a portion of the first effluent is then contacted with a second catalyst comprising a second molecular sieve having a Constraint Index less than 3 under conditions effective to transalkylate C9+ aromatic hydrocarbons with said at least one C6-C7 aromatic hydrocarbon to form a second effluent comprising xylene.

    Abstract translation: 在通过C 9 +芳族烃原料与C 6和/或C 7芳烃的烷基转移生产二甲苯的方法中，C 9 +芳烃原料，至少一种C 6和/或C 7芳烃和氢与第一催化剂接触，所述第一催化剂包含（ i）具有在约3至约12范围内的约束指数的第一分子筛和（ii）至少元素周期表第6至12族的第一和第二不同金属或其化合物。 与第一催化剂接触在有效地使含有C 2 +烷基的原料中芳族烃脱烷基化并使形成的C 2 +烯烃饱和以产生第一流出物的条件下进行。 然后至少一部分第一流出物与包含第二分子筛的第二催化剂接触，该第二催化剂在有效使C 9+芳族烃与所述至少一种C 6 -C 7芳族烃烷基转移的条件下具有小于3的约束指数，以形成第二流出物 包括二甲苯。

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