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    • 2. 发明申请
    • PURIFICATION OF PROPYLENE OXIDE
    • 丙烯氧化物的纯化
    • WO2012050885A1
    • 2012-04-19
    • PCT/US2011/053654
    • 2011-09-28
    • LYONDELL CHEMICAL TECHNOLOGY, L.P.SAWYER, Gary, A.
    • SAWYER, Gary, A.
    • C07D301/32
    • C07D301/32
    • The invention is a method of purifying propylene oxide containing acetone, water, methanol, methyl formate, aldehydes, and hydrocarbons impurities. The method comprises contacting the propylene oxide with a glycol and a C 7 or greater alkane in a liquid/liquid solvent extraction, and separating propylene oxide having reduced impurities content. The purified propylene oxide may be produced by reacting propylene and a hydroperoxide to produce a crude propylene oxide effluent, distilling the crude effluent to produce a propylene oxide stream which contains 1-5 weight percent of the impurities, contacting the propylene oxide stream with a glycol and a C 7 or greater alkane in a liquid/liquid solvent extraction, then separating an alkane fraction comprising propylene oxide from a glycol fraction, and distilling the alkane fraction in one or more steps to produce an alkane bottoms stream and a propylene oxide product having less than 0.1 weight percent impurities.
    • 本发明是一种净化含丙酮,水,甲醇,甲酸甲酯,醛类和烃杂质的环氧丙烷的方法。 该方法包括在液/液溶剂萃取中使环氧丙烷与二醇和C7或更多的烷烃接触,并分离出杂质含量降低的环氧丙烷。 纯化的环氧丙烷可以通过使丙烯和氢过氧化物反应来制备粗环氧丙烷流出物,蒸馏粗流出物以产生含有1-5重量%杂质的环氧丙烷流,使环氧丙烷流与二醇 和在液/液溶剂萃取中的C7或更大的烷烃,然后从二醇馏分中分离包含环氧丙烷的烷烃馏分,并在一个或多个步骤中蒸馏出烷烃馏分以产生烷烃塔底物流和具有较少 超过0.1重量%的杂质。