Selective aromatics disproportionation process
    8.
    发明授权
    Selective aromatics disproportionation process 失效
    选择性芳烃歧化过程

    公开(公告)号:US6114592A

    公开(公告)日:2000-09-05

    申请号:US213957

    申请日:1998-12-17

    摘要: An improved process combination is disclosed for the selective disproportionation of toluene. The combination comprises selective hydrogenation of a toluene feedstock followed by disproportionation using a zeolitic catalyst which is oil-dropped in an aluminum phosphate binder to achieve a high yield of paraxylene. Optionally, the catalyst is selectively precoked prior to toluene disproportionation. The catalyst and process provide improved selectivity for the production of paraxylene.

    摘要翻译: 公开了改进的方法组合用于甲苯的选择性歧化。 该组合包括甲苯原料的选择性氢化,然后使用沸石催化剂进行歧化,该沸石催化剂油滴在磷酸铝粘合剂中以实现高产率的对二甲苯。 任选地,在甲苯歧化之前选择性地预先催化剂。 催化剂和方法为对二甲苯的生产提供了改进的选择性。

    XYLENE PRODUCTION PROCESSES WITH INTEGRATED FEEDSTOCK TREATMENT
    10.
    发明申请
    XYLENE PRODUCTION PROCESSES WITH INTEGRATED FEEDSTOCK TREATMENT 有权
    具有集成进料处理的XYLENE生产工艺

    公开(公告)号:US20110046427A1

    公开(公告)日:2011-02-24

    申请号:US12917045

    申请日:2010-11-01

    IPC分类号: C07C15/08

    CPC分类号: C07C6/123 C07C15/08

    摘要: A process for aromatic transalkylation and olefin reduction of a feed stream is disclosed. Transalkylation conditions provide a product having increased xylene concentration and reduced olefin concentration relative to the feed. The process may be used in a xylene production facility to minimize or avoid the necessity of feedstock pretreatment such as hydrotreating, hydrogenation, or treating with clay and/or molecular sieves.

    摘要翻译: 公开了一种进料流的芳族烷基转移和烯烃还原方法。 烷基转移条件提供了相对于进料的二甲苯浓度增加和烯烃浓度降低的产物。 该方法可用于二甲苯生产设备中以最小化或避免原料预处理(如加氢处理,氢化或用粘土和/或分子筛处理)的必要性。