ADSORBENT AND PROCESS FOR THE SEPARATION OF META-XYLENE FROM AROMATIC HYDROCARBONS
    3.
    发明申请
    ADSORBENT AND PROCESS FOR THE SEPARATION OF META-XYLENE FROM AROMATIC HYDROCARBONS 有权
    从芳香烃分离甲基 - 二甲苯的吸附剂和方法

    公开(公告)号:US20090326310A1

    公开(公告)日:2009-12-31

    申请号:US12165266

    申请日:2008-06-30

    IPC分类号: C07C7/12

    摘要: Adsorbents and methods for the adsorptive separation of meta-xylene from a mixture containing at least one other C8 aromatic hydrocarbon (e.g., a mixture of ortho-xylene, meta-xylene, para-xylene, and ethylbenzene) are described. Suitable adsorbents comprise sodium zeolite Y having an average crystallite size from about 50 to about 700 nanometers. The adsorbents provide improved separation efficiency, which may be associated with a higher meta-xylene mass transfer rate and/or other beneficial effects. Exemplary desorbents for use in the process may comprise toluene, benzene, or indan.

    摘要翻译: 描述了从含有至少一种其它C 8芳族烃(例如邻二甲苯,间二甲苯,对二甲苯和乙苯的混合物)的混合物吸附分离间二甲苯的吸附剂和方法。 合适的吸附剂包括具有约50至约700纳米的平均微晶尺寸的钠沸石Y。 吸附剂提供改进的分离效率,其可能与较高的间二甲苯质量传递速率和/或其他有益效果相关。 用于该方法的示例性脱附剂可包括甲苯,苯或茚满。