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    • 5. 发明申请
    • IMPROVING PRODUCT RECOVERY FROM SIMULATED-MOVING-BED ADSORPTION
    • 从模拟移动床吸附提高产品回收率
    • WO2006096394A8
    • 2007-07-26
    • PCT/US2006007146
    • 2006-03-01
    • UOP LLCFREY STANLEY J
    • FREY STANLEY J
    • C07C7/12
    • C07C7/12C07C15/08
    • Product purity from or capacity of a simulated-moving-bed adsorptive separation process is increased by flushing the contents of the transfer line (10) previously used to remove the raffinate stream away from the adsorbent chamber (100, 200), preferably into the raffinate column (400) used to separate desorbent (D) from raffinate product (RP). Preferably a stream from the adsorbent chamber at an intermediate point between the feed entry point and raffinate withdrawal is used as the flushing liquid. This flush step eliminates the passage of a quantity of the raffinate material into the adsorbent chamber (100, 200) in the transfer-line flush period or when the process conduit is subsequently used to charge the feed stream (F) to the adsorbent chamber (100, 200).
    • 产物纯度或模拟移动床吸附分离过程的能力通过冲洗先前用于将萃余液流从吸附剂腔室(100,200)移出的输送管线(10)的内容物,优选冲洗到萃余液 柱(400)用于将萃余液(D)与萃余液产物(RP)分离。 优选地,在进料入口点和提余液取出之间的中间点来自吸附剂室的料流用作冲洗液体。 该冲洗步骤消除了在输送管线冲洗周期中一定量的提余物材料进入吸附剂腔室(100,200),或当随后使用工艺管道将进料流(F)装入吸附剂腔室( 100,200)。