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    Exclusion chromatographic separation of ionic from nonionic solutes
    2.
    发明公开
    Exclusion chromatographic separation of ionic from nonionic solutes 失效
    Trennung von ionischen und nichtionischengelöstenStoffen durch Ausschlusschromatographie

    公开(公告)号：EP0815911A1

    公开(公告)日：1998-01-07

    申请号：EP96304969.7

    申请日：1996-07-05

    申请人： TENNESSEE VALLEY AUTHORITY ,  The University of Southern Mississippi

    发明人： Hester, Roger D: ,  Farina, George E.

    IPC分类号： B01D15/02 ,  B01D15/08 ,  C13D3/14

    CPC分类号： C13B20/148 ,  B01D15/1828 ,  B01D15/361 ,  B01D15/365 ,  C13K1/04

    摘要： A process for effectively and economically separating an ionic component such as acid from a nonionic component such as sugar in polar solutions using ion exclusion technology whereby the viability of using hydrolysis to convert wood and agricultural waste products such as corn stover into fuel alcohol is substantially effected. Underlying the gist of this invention are newly discovered methods by which dispersion, caused by shrinkage of resin within ion exclusion columns, is controlled resulting in operation of such columns, over a wide range of process conditions to produce separate and distinct elution profiles for the acid and sugar. Successful operation of these new ion exclusion methods, techniques, and systems can replace lime precipitation which currently is being used in acid hydrolysis processing. This not only obviates the need for the large quantities of acid and lime required therein, but also eliminates the unwanted and highly ecologically undesirable production of huge quantities of waste gypsum.

    摘要翻译： 一种使用离子排除技术在极性溶液中有效和经济地将离子组分如酸与非离子组分如糖分离的方法，由此使用水解将木材和农业废物如玉米秸秆转化为燃料醇的可行性基本上达到 。 本发明的要点的基础是新发现的方法，通过这些方法可以控制由离子排除柱内的树脂收缩引起的分散体，从而在宽范围的工艺条件下进行这种柱的操作，以产生酸的分离和不同的洗脱曲线 和糖。 这些新的离子排除方法，技术和系统的成功运行可以替代当前在酸水解加工中使用的石灰沉淀。 这不仅消除了对其中所需的大量酸和石灰的需要，而且消除了大量废石膏的不希望的和高度生态上不希望的生产。