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选择正丁醇－丁二酸－水作为实验体系，以有机相为分散相，在φ１００ｍｍ的塔内系统地研究了单降液管、双降液管和三降液管三种塔板的两相流动特性和传质效率，并对其进行了比较。研究结果表明，在相同的操作条件下，多降液管大孔筛板塔比单降液管塔内的动态存留分数大，板下静液层高度小的特点，同时多降液管筛板塔比单降液管筛板塔具有更高的塔效率。
The n-butanol-succinic acid-water was chosen as the experimental system. The organic phase was used as the disperse phase. Two sets of single downcomer, double downcomer and triple downcomer were studied systematically in a φ100mm column. Phase flow characteristics and mass transfer efficiency, and compared them. The results show that under the same operating conditions, the performance of multi-dropper macroporous sieve tray tower is higher than that of single-drop column tower, and the height of hydrostatic layer is small. Taba single downcomer tray tower with higher tower efficiency.