利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

11 条记录 (耗时 0.046 秒)

    Continuous process for preparing ethylbenzene using liquid phase alkylation and vapor phase transalkylation
    4.
    发明授权
    Continuous process for preparing ethylbenzene using liquid phase alkylation and vapor phase transalkylation 失效
    使用液相烷基化和气相烷基转移制备乙苯的连续方法

    公开(公告)号：US5600048A

    公开(公告)日：1997-02-04

    申请号：US364145

    申请日：1994-12-27

    申请人： Jane C. Cheng ,  C. Morris Smith ,  Chaya R. Venkat ,  Dennis E. Walsh

    发明人： Jane C. Cheng ,  C. Morris Smith ,  Chaya R. Venkat ,  Dennis E. Walsh

    IPC分类号： B01J29/70 ,  C07C2/66 ,  C07C6/12 ,  C07C15/073

    CPC分类号： C07C15/073 ,  C07C6/126 ,  C07C2529/40 ,  C07C2529/65 ,  C07C2529/70 ,  Y02P20/582

    摘要： There is provided a process for preparing ethylbenzene using liquid phase alkylation and vapor phase transalkylation. The liquid phase alkylation reaction may be catalyzed by an acidic solid oxide, such as MCM-22, MCM-49 and MCM-56. The vapor phase transalkylation may be catalyzed by a medium-pore size zeolite such as ZSM-5. The process may be run continuously with the continuous introduction of fresh benzene feed containing at least 500 ppm of nonbenzene hydrocarbon impurities. The combined ethylbenzene product of these alkylation and transalkylation reactions has very low levels of impurities including xylene, hydrocarbons having 7 or less carbon atoms and hydrocarbons having 9 or more carbon atoms.

    摘要翻译： 提供了使用液相烷基化和气相烷基转移制备乙苯的方法。 液相烷基化反应可以由酸性固体氧化物如MCM-22，MCM-49和MCM-56催化。 气相烷基转移可以通过中等孔径的沸石催化，例如ZSM-5。 该方法可以连续引入含有至少500ppm非苯烃杂质的新鲜苯进料而连续进行。 这些烷基化和烷基转移反应的组合乙苯产物具有非常低的杂质含量，包括二甲苯，具有7个或更少碳原子的烃和具有9个或更多个碳原子的烃。

    Regeneration of aromatic alkylation catalysts using hydrocarbon stripping
    7.
    发明授权
    Regeneration of aromatic alkylation catalysts using hydrocarbon stripping 有权
    使用烃汽提再生芳烃烷基化催化剂

    公开(公告)号：US06911568B1

    公开(公告)日：2005-06-28

    申请号：US10239372

    申请日：2000-04-28

    申请人： Ajit B. Dandekar ,  John P. McWilliams ,  C. Morris Smith ,  Michael A. Better ,  Wei-Ping Tai

    发明人： Ajit B. Dandekar ,  John P. McWilliams ,  C. Morris Smith ,  Michael A. Better ,  Wei-Ping Tai

    IPC分类号： C07C2/66

    CPC分类号： C07C2/66 ,  Y02P20/584 ,  C07C15/085 ,  C07C15/073

    摘要： A process for alkylating an alkylatable aromatic compound is disclosed, in which the process includes: (a) contacting the alkylatable aromatic compound and an alkylating agent with an alkylation catalyst under alkylation conditions; and (b) when said alkylation catalyst has become at least partially deactivated, contacting said alkylation catalyst with a C1-C8 hydrocarbon under alkylation catalyst reactivation conditions. The process provides comparable rejuvenation of catalyst activity as air rengenaration with minimal or no increase in amounts of undesirable byproducts such as polypropylbenzenes in the case of benzene alkylation with propylene.

    摘要翻译： 公开了一种烷基化可烷基化芳族化合物的方法，其中该方法包括：（a）在烷基化条件下使烷基化芳族化合物与烷基化剂与烷基化催化剂接触; 和（b）当所述烷基化催化剂至少部分失活时，在烷基化催化剂再活化条件下使所述烷基化催化剂与C 1 -C 8 -C 8烃接触。 在苯与丙烯烷基化的情况下，该方法提供了与空气再生相当的催化剂活性的可比的复原，其中不希望的副产物（例如聚丙苯）的量最小或没有增加。