| 摘要 |
PURPOSE:To effectively perform mass transfer between liquid and liquid by enhancing contact efficiency between light liquid and heavy liquid and increasing the number of theoretical plates. CONSTITUTION:A rotor 2 tightly stuck to a rotary shaft 1 is divided into multistages in the direction of the rotary shaft 1 and thereby countercurrent contact chambers 3a, 3b, 3c are provided. As a result, heavy liquid once separated in the outer periphery side of the rotor 2 is again returned to the center side of the shaft and similarly light liquid separated in the center side of the shaft is retransferred to the outer periphery side of the rotor 2 and respective liquids are successively subjected to countercurrent contact with fresh light liquid and heavy liquid. Therefore since the region of countercurrent contact is increased and also the number of theoretical plates can be increased by providing a packing material, both the countercurrent distribution between two liquids of a small difference in specific gravity and continuous treatment of large amounts are performed.
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