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    • 9. 发明公开
    • METHOD FOR PURIFYING ACETONE
    • 净化丙酮的方法
    • EP2370388A1
    • 2011-10-05
    • EP09768581.2
    • 2009-12-09
    • SABIC Innovative Plastics IP B.V.
    • NELSON, Mark, ErikSOKOLOV, Andrey, YurievichKRUPENKO, Ilya, YurievichARISTOVICH, Valery, Yurievich
    • C07C45/85C07C49/08
    • C07C45/85C07C49/08
    • A method for purifying a crude acetone raw material using three columns in sequence comprises the steps of feeding the crude acetone raw material into a first column; adding an alkaline reagent and an oxidative reagent into the first column; feeding the first bottom fraction to a second rectification column; optionally adding an alkaline reagent to the second column above the charge point of the bottom fraction; separating a purified acetone from the high molecular weight impurities and removing the purified acetone as a top fraction by distillation in the second column, forming a second bottom fraction comprising an acetone mixture comprising high molecular weight impurities; feeding the second bottom fraction to a third rectification column; removing a top fraction from the third column; and returning the top fraction removed from the third column to the first column, wherein the second rectification column is operated at atmospheric pressure.
    • 使用三个塔依次纯化粗丙酮原料的方法包括以下步骤:将粗丙酮原料进料到第一塔中; 向第一柱中加入碱性试剂和氧化剂; 将第一塔底馏分送入第二精馏塔; 任选地将碱性试剂加入到底部馏分的加料点之上的第二塔中; 从高分子量杂质中分离纯化的丙酮,并通过在第二塔中蒸馏除去纯化的丙酮作为塔顶馏分,形成包含含有高分子量杂质的丙酮混合物的第二塔底馏分; 将第二底部馏分进料至第三精馏塔; 从第三列移除顶部分数; 以及将从第三塔移除的顶部馏分返回到第一塔,其中第二精馏塔在大气压下操作。