Alkylation process using UZM-8 zeolite
    42.
    发明申请
    Alkylation process using UZM-8 zeolite 失效
    使用UZM-8沸石的烷基化方法

    公开(公告)号:US20060224031A1

    公开(公告)日:2006-10-05

    申请号:US11170420

    申请日:2005-06-29

    IPC分类号: C07C2/68

    摘要: A process for the alkylation of aromatics with olefins using a solid catalyst bed containing UZM-8 zeolite is disclosed. A polyalkylated aromatic is passed to the catalyst bed to reduce the concentration of the olefin at alkylation conditions. A portion of the effluent recovered from the catalyst bed may be recycled to the catalyst bed. Such operation can decrease the catalyst deactivation rate and the formation of diphenylalkanes. The process disclosed herein is applicable to processes for the production of a wide variety of commercially important alkylated aromatics, including ethylbenzene and cumene.

    摘要翻译: 公开了使用含有UZM-8沸石的固体催化剂床用烯烃烷基化芳族化合物的方法。 将多烷基化芳族化合物通入催化剂床,以在烷基化条件下降低烯烃的浓度。 从催化剂床回收的一部分流出物可以再循环到催化剂床。 这种操作可以降低催化剂失活速率和二苯基烷烃的形成。 本文公开的方法适用于生产各种商业上重要的烷基化芳族化合物(包括乙苯和枯烯)的方法。

    Selective hydrogenation of unsaturated aliphatic hydrocarbons in predominantly aromatic streams
    48.
    发明授权
    Selective hydrogenation of unsaturated aliphatic hydrocarbons in predominantly aromatic streams 失效
    主要是芳族物流中不饱和脂肪烃的选择性氢化

    公开(公告)号:US08350106B2

    公开(公告)日:2013-01-08

    申请号:US12165291

    申请日:2008-06-30

    IPC分类号: C07C5/05

    摘要: The selective saturation of unsaturated aliphatic hydrocarbons (e.g., diolefins) in a hydrogenation feed stream comprising an aromatic compound (e.g., benzene) and one or more nitrogen compounds renders it beneficial when the stream or a portion thereof is subsequently treated (e.g., with a zeolitic adsorbent) to remove nitrogen. In particular, the selective saturation of, for example, olefins and diolefins prolongs the life of the nitrogen guard bed. In a representative embodiment, the selective hydrogenation is applied to a recycle benzene-containing stream recovered in the separation section (e.g., from the benzene/toluene splitter overhead) of a styrene production process, prior to treatment with a nitrogen guard bed adsorbent.

    摘要翻译: 在包含芳族化合物(例如苯)和一种或多种氮化合物的氢化进料流中,不饱和脂族烃(例如二烯烃)的选择性饱和使其在后续处理流或其一部分时(例如, 沸石吸附剂)去除氮气。 特别地,例如烯烃和二烯烃的选择性饱和延长了氮保护床的寿命。 在代表性的实施方案中,在用氮保护床吸附剂处理之前,将选择性氢化应用于在苯乙烯生产方法的分离段(例如苯/甲苯分离器塔顶馏出物)中回收的再循环含苯物流。