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    Manufacture of high purity benzene and para-rich xylenes by combining aromatization and selective disproportionation of impure toluene
    1.
    发明授权
    Manufacture of high purity benzene and para-rich xylenes by combining aromatization and selective disproportionation of impure toluene 失效
    通过混合不纯的甲苯的芳构化和选择性歧化来制造高纯度苯和对二富集二甲苯

    公开(公告)号：US06323381B1

    公开(公告)日：2001-11-27

    申请号：US08273933

    申请日：1994-07-12

    申请人： Gerald J. Nacamuli ,  Robert A. Innes ,  Arnold J. Gloyn

    发明人： Gerald J. Nacamuli ,  Robert A. Innes ,  Arnold J. Gloyn

    IPC分类号： C07C600

    CPC分类号： C10G29/16 ,  C10G35/095

    摘要： A process is set forth for reacting impure toluene to obtain benzene, toluene and a para-rich xylene stream, which are substantially free of close-boiling non-aromatics. The impure toluene comprises at least 70 wt % toluene and between about 0.2 wt % and about 5 wt % close-boiling non-aromatics. The process may also comprise aromatizing a naphtha over a non-acidic catalyst. The impure toluene from the aromatization step is passed over an acidic intermediate pore zeolite to produce a para-rich xylene stream and chemically pure benzene.

    摘要翻译： 阐述了使不纯的甲苯反应以获得基本上不含近沸点非芳族化合物的苯，甲苯和富二甲苯流的方法。 不纯的甲苯包含至少70重量％的甲苯和约0.2重量％至约5重量％的接近沸腾的非芳族化合物。 该方法还可以包括在非酸性催化剂上芳构化石脑油。 来自芳构化步骤的不纯的甲苯通过酸性中间孔沸石以产生富二甲苯流和化学纯的苯。