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    • 1. 发明授权
    • Method for producing propylene oxide
    • 生产环氧丙烷的方法
    • US07381829B2
    • 2008-06-03
    • US10572876
    • 2004-09-15
    • Junpei TsujiMasaru Ishino
    • Junpei TsujiMasaru Ishino
    • C07C301/14C07C301/19
    • C07D301/19Y02P20/584
    • A process for producing propylene oxide, which comprises the following steps: oxidation step: a step of obtaining cumene hydroperoxide by oxidizing cumene; epoxidation step: a step of obtaining propylene oxide and cumyl alcohol by reacting cumene hydroperoxide obtained in the oxidation step with propylene; and converting step: a step of converting cumyl alcohol obtained in the epoxidation step into cumene in the presence of a solid catalyst and recycling said cumene to the oxidation step, wherein a concentration of methylbenzyl alcohol in a liquid containing cumene recycled to the oxidation step, is 1% by weight or less.
    • 一种生产环氧丙烷的方法,包括以下步骤:氧化步骤:通过氧化枯烯得到氢过氧化枯烯的步骤; 环氧化步骤:通过使在氧化步骤中获得的氢过氧化枯烯与丙烯反应获得环氧丙烷和异丙苯的步骤; 和转化步骤:在固体催化剂存在下将在环氧化步骤中得到的异丙苯转化为枯烯并将所述异丙基苯再循环到氧化步骤的步骤,其中将含有再循环至氧化步骤的异丙基苯的液体中的甲基苄醇的浓度, 为1重量%以下。