This work presented hydrodynamic performance of pilot-scale pulsed sieve-plate column (PSPC) and pulsed disc-and-doughnut column (PDDC) in different operation modes for the uranyl nitrate/30% (v/v) tributyl phosphate in kerosene system. It was found that the hydrodynamic performance of PSPC and PDDC was similar in the aqueous continuous mode, in which the stainless-steel internal plates were not wettable to the dispersed phase. In the organic-continuous mode, more energy inputting was required to attain a similar dispersion efficiency than that in the aqueous continuous mode. Moreover, the liquid–liquid flow in PSPC exhibited poorer dispersion efficiency than that in PDDC and was easier to run into the flooding regime as the throughput was increased. Wettability of the stainless-steel internal plates and geometrical structure differences between the sieve plates and disc/doughnut plates were the main reasons for these phenomena. Correlations for the prediction of holdup in both PDDC and PSPC were proposed based on experimental results.

这项工作展示了在煤油体系中硝酸铀酰/ 30％（v / v）磷酸三丁酯在不同操作模式下的中试规模脉冲筛板塔（PSPC）和脉冲盘形-甜甜圈塔（PDDC）的流体力学性能。发现在水连续模式下，PSPC和PDDC的流体力学性能相似，在这种模式下，不锈钢内板不能润湿分散相。与水连续模式相比，在有机连续模式下，需要更多的能量输入才能获得相似的分散效率。此外，PSPC中的液-液流动表现出比PDDC差的分散效率，并且随着通量的增加，更容易进入驱油状态。这些现象的主要原因是不锈钢内板的润湿性以及筛板和圆盘/甜甜圈板之间的几何结构差异。根据实验结果，提出了预测PDDC和PSPC中滞留量的相关性。