Use of Mixed Activity Dehydrogenation Catalyst Following Oxidative Reheat
    1.
    发明申请
    Use of Mixed Activity Dehydrogenation Catalyst Following Oxidative Reheat 审中-公开
    氧化再热后混合活性脱氢催化剂的应用

    公开(公告)号:US20110004037A1

    公开(公告)日:2011-01-06

    申请号:US12825550

    申请日:2010-06-29

    IPC分类号: C07C5/327

    摘要: Methods are disclosed for the dehydrogenation of feed streams, such as in the manufacture of styrene from ethylbenzene, using a catalyst bed having catalyst with differing activities. In particular, the use of upstream and downstream catalyst beds of relatively low and high activities, respectively, can reduce the production of unwanted byproducts, especially in styrene production processes employing an oxidative reheat step (oxidation zone) prior to ethylbenzene dehydrogenation. The methods allow the maximum temperature in the oxidation zone to be decreased, thereby reducing the formation of unwanted oxygenated byproducts (e.g., phenol).

    摘要翻译: 公开了用于使用具有不同活性的催化剂的催化剂床从进料流脱氢的方法,例如从乙苯制造苯乙烯。 特别地,分别使用相对低和高活性的上游和下游催化剂​​床可以减少不需要的副产物的产生,特别是在乙苯脱氢之前使用氧化再热步骤(氧化区)的苯乙烯生产方法中。 这些方法允许氧化区中的最高温度降低,从而减少不需要的氧化副产物(例如苯酚)的形成。