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    • 10. 发明申请
    • VINYL ACETATE PRODUCTION PROCESS
    • 醋酸乙烯酯生产工艺
    • WO2011043798A1
    • 2011-04-14
    • PCT/US2010/002666
    • 2010-10-01
    • LYONDELL CHEMICAL TECHNOLOGY, L.P.
    • HALLINAN, NoelBRTKO, Wayne, J.SALISBURY, Brian, A.
    • C07C67/055C07C69/15
    • C07C67/055C07C69/01C07C69/15
    • A process for the production of vinyl acetate is disclosed. The process comprises reacting ethylene, acetic acid, and oxygen in the presence of a catalyst to produce a reaction mixture comprising vinyl acetate, ethylene, carbon dioxide, acetic acid and ethylene glycol diacetate. The reaction mixture is separated to a gas stream comprising ethylene, oxygen, and carbon dioxide and a crude vinyl acetate stream comprising vinyl acetate, acetic acid and ethylene glycol diacetate. An ethylene glycol diacetate stream, which comprises at least 50 wt% of ethylene glycol diacetate, is isolated from the crude vinyl acetate stream and hydrolyzed to recover acetic acid. Recovered acetic acid may be recycled to the acetoxidation reaction.
    • 公开了一种生产乙酸乙烯酯的方法。 该方法包括在催化剂存在下使乙烯,乙酸和氧气反应,以产生包含乙酸乙烯酯,乙烯,二氧化碳,乙酸和乙二醇二乙酸酯的反应混合物。 将反应混合物分离成包含乙烯,氧气和二氧化碳的气流和包含乙酸乙烯酯,乙酸和乙二醇二乙酸酯的粗乙酸乙烯酯流。 包含至少50重量%的乙二醇二乙酸酯的乙二醇二乙酸酯流从粗乙酸乙烯酯流中分离并水解回收乙酸。 回收的乙酸可以再循环到乙酰化反应中。