摘要 |
PROBLEM TO BE SOLVED: To provide an operation method of a pseudo moving bed providing a high quality separation effect by resolving problems caused by separation performance deviation of a unit packed bed of the pseudo moving bed. SOLUTION: Between the operation start of a set of supply-discharge port of the pseudo moving bed and switching to the next set of the supply-discharge port, following three processes are performed to provide a uniform high quality fluid by adjusting a moving liquid amount to an individual value for every circulation process: (1) a first supply-discharge process for supplying a raw material fluid from a raw material fluid supply port and a desorbent from a desorbent supply port, and discharging the total amount of liquid flowing down through the bed from a non-adsorbate fluid discharge port and an adsorbate fluid discharge port; (2) a second supply-discharge process for supplying the raw material fluid from the raw material fluid supply port and discharging the total amount of liquid flowing down through the bed from the adsorbate fluid discharge port as the adsorbate fluid, or supplying the desorbent from the desorbent supply port, and discharging the total amount of liquid flowing down through the bed from the non-adsorbate fluid discharge port as the non-adsorbate fluid; and (3) a circulation process for moving the liquid in the bed toward the downstream direction by closing all the supply and discharge ports. COPYRIGHT: (C)2008,JPO&INPIT
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