Catalytic conversion of polycyclic aromatics into xylenes
    1.
    发明授权
    Catalytic conversion of polycyclic aromatics into xylenes 有权
    多环芳烃催化转化成二甲苯

    公开(公告)号:US06972348B2

    公开(公告)日:2005-12-06

    申请号:US10807626

    申请日:2004-03-24

    IPC分类号: C07C4/24 C07C5/22 C07C6/12

    摘要: A catalyst, and a process for using the catalyst, that effectively converts and transalkylates indane and C10 and heavier polycyclic aromatics into C8 aromatics is herein disclosed. The catalyst comprises a solid-acid support such as mordenite plus a metal component such as rhenium. The catalyst provides excellent conversion of such heavy aromatic species as naphthalene, which is also observed by a decrease in the ending-boiling-point of a hydrocarbon stream passed over the catalyst. The same catalyst is also effective for transalkylation of lighter aromatics, thus yielding a valuable xylenes product stream out of the process.

    摘要翻译: 本文公开了一种催化剂和使用该催化剂的方法,其有效地将茚满和C 10 N和更重的多环芳烃转化和烷基化到C 8芳烷烃中。 催化剂包括固体酸载体如丝光沸石和金属组分如铼。 该催化剂提供了诸如萘之类的重芳族物质的极好的转化率,这也是通过在催化剂上通过的烃流的终沸点降低而观察到的。 相同的催化剂对于较轻的芳族化合物的烷基转移也是有效的,因此在工艺中产生有价值的二甲苯产物流。

    Two-stage aromatics isomerization process
    7.
    发明授权
    Two-stage aromatics isomerization process 失效
    两阶段芳烃异构化过程

    公开(公告)号:US07495137B2

    公开(公告)日:2009-02-24

    申请号:US12056553

    申请日:2008-03-27

    IPC分类号: C07C5/27

    摘要: This invention is drawn to a process for isomerizing a non-equilibrium mixture of alkylaromatics in two sequential zones, the first zone operating in the absence of hydrogen using a platinum-free catalyst and the second zone using a catalyst comprising a molecular sieve and a platinum-group metal component to obtain an improved yield of para-xylene from the mixture relative to prior art processes.

    摘要翻译: 本发明涉及使两个连续区域中的烷基芳族化合物的非平衡混合物异构化的方法,第一区域在不使用无铂的催化剂的情况下在不存在氢气的情况下操作,第二区域使用包含分子筛和铂的催化剂 - 组合金属组分,以获得相对于现有技术方法从混合物中提高的对二甲苯的产率。

    Aromatics transalkylation to ethylbenzene and xylenes
    8.
    发明授权
    Aromatics transalkylation to ethylbenzene and xylenes 失效
    芳基烷基转移到乙苯和二甲苯中

    公开(公告)号:US06958425B1

    公开(公告)日:2005-10-25

    申请号:US10461138

    申请日:2003-06-13

    IPC分类号: C07C5/22 C07C5/27 C07C6/12

    摘要: The use of transalkylation catalysts to react heavy aromatic compounds of carbon number nine (and heavier carbon numbers) with benzene to form carbon number eight aromatics is disclosed. The catalyst system preserves ethyl-group species on the heavier aromatics that are otherwise de-ethylated over most gas-phase transalkylation catalysts to form undesired ethane gas with benzene or toluene. The catalyst system also promotes methyl-group species transalkylation at selected conditions. Thus, by using the transalkylation system, a greater yield of para-xylene or other carbon number eight aromatics may be achieved overall within an integrated aromatics complex.

    摘要翻译: 公开了使用烷基转移催化剂将碳数9(和较重碳数)的重芳族化合物与苯反应以形成碳数8的芳族化合物。 催化剂体系在较重的芳族化合物上保留乙基物质,否则在大多数气相烷基转移催化剂上脱乙基化,以形成与苯或甲苯不需要的乙烷气体。 催化剂体系还可以在选定的条件下促进甲基物质的烷基转移。 因此,通过使用烷基转移体系,可以在整合的芳烃络合物中总体上实现更高的对二甲苯或其它碳数八个芳族化合物的产率。

    Combination reforming and isomerization process
    10.
    发明授权
    Combination reforming and isomerization process 有权
    组合重整和异构化过程

    公开(公告)号:US07875757B2

    公开(公告)日:2011-01-25

    申请号:US12129253

    申请日:2008-05-29

    IPC分类号: C07C5/27

    摘要: A reforming and isomerization process has been developed. A reforming feedstream is charged to a reforming zone containing a reforming catalyst and operating at reforming conditions to generate a reforming zone effluent. Hydrogen and an isomerization feedstream is charged into an isomerization zone to contact an isomerization catalyst at isomerization conditions to increase the branching of the hydrocarbons. The isomerization catalyst is a solid acid catalyst comprising a support comprising a sulfated oxide or hydroxide of at least an element of Group IVB, a first component being at least one lanthanide series element, mixtures thereof, or yttrium, and a second component being a platinum group metal or mixtures thereof. The reforming zone effluent and the isomerization zone effluent are each separated to form a light ends stream and a product stream. The light ends streams are combined for processing in a net gas re-contacting zone.

    摘要翻译: 已经开发了改性和异构化方法。 将重整进料流装入含有重整催化剂的重整区,并在重整条件下操作以产生重整区流出物。 将氢气和异构化原料流装入异构化区以在异构化条件下与异构化催化剂接触以增加烃的支化。 异构化催化剂是包含载体的固体酸催化剂,其包含至少一种IVB族元素的硫酸化氧化物或氢氧化物,第一组分为至少一种镧系元素,其混合物或钇,第二组分为铂 组金属或其混合物。 重整区流出物和异构化区流出物各自分离以形成轻馏分流和产物流。 轻馏分流合并用于在净气体再接触区域中进行处理。