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    • 63. 发明授权
    • Liquid-liquid extraction process for the production of acrylic esters
    • 用于生产丙烯酸酯的液 - 液萃取方法
    • US09403751B2
    • 2016-08-02
    • US14493559
    • 2014-09-23
    • Arkema France
    • Serge TretjakStephane Denis
    • C07C67/58C07C67/08B01J4/00B01D11/04
    • C07C67/58B01D11/04B01D11/043B01J4/001C07C67/08C07C69/54
    • The invention relates to a liquid-liquid extraction process, comprising: the provision of a main input liquid stream, comprising at least one compound of interest and an excess compound; the provision of a liquid scrubbing stream; the extraction of the excess compound from the main input liquid stream by contact with the liquid scrubbing stream, making it possible to collect a main output liquid stream, depleted in excess compound with respect to the main input liquid stream; in which: the main input liquid stream and the liquid scrubbing stream exhibit a difference in density of less than or equal to 50 kg/m3 and also an interfacial tension of less than or equal to 3 dyn/cm; and the extraction stage is carried out in a packed contactor with a ratio by weight as input liquid scrubbing stream/main liquid stream ranging from 0.3 to 0.5. The invention also relates to a process for the production of acrylic ester in which the production stream is treated by means of the above liquid-liquid extraction process.
    • 本发明涉及一种液体 - 液体提取方法,包括:提供主要输入液体流,其包含至少一种目标化合物和过量化合物; 提供液体洗涤流; 通过与液体洗涤流接触从主输入液体流中提取过量化合物,使得可以收集相对于主要输入液体流消耗过量化合物的主要输出液体流; 其中:主输入液体流和液体洗涤流表现出小于或等于50kg / m 3的密度差,以及小于或等于3达因/厘米的界面张力; 并且萃取阶段在填充接触器中进行,重量比为输入液体洗涤流/主液流,范围为0.3至0.5。 本发明还涉及生产丙烯酸酯的方法,其中通过上述液 - 液萃取方法处理生产流。