This work reports the hydrodynamic description of a large-scale sieve tray equipped in an air/water column mockup. The test tray accommodated a novel multi-probe flow profiler for simultaneous conductivity measurements. For the first time, 3D liquid holdup distribution, liquid residence time distribution and effective froth height distribution were obtained at very high spatiotemporal resolution for several gas and liquid loadings. The liquid flow and mixing patterns were visualized via tracer-based experiments. The methodologies used for acquiring these distributions are thoroughly discussed in this work. Diligent examination of the processed experimental data revealed the hydrodynamic characteristics of an operational sieve tray for the studied loadings. Uniform effective froth height persisted over the majority of the tray, whereas homogenous liquid holdup distribution was observed at multiple elevations above the deck with the highest holdup occurring near the average effective froth height. Based on tracer experiments, axisymmetric liquid flow and mixing patterns were detected with parabolic velocity distribution near the inlet. Overall, the liquid velocities over the remaining tray deck were nearly uniform for the studied loadings.

这项工作报告了配备在空气/水柱模型中的大型筛板的流体动力学描述。测试托盘装有一个新颖的多探头流量剖面仪，用于同时进行电导率测量。首次以非常高的时空分辨率获得了几种气体和液体负载的 3D 液体滞留分布、液体停留时间分布和有效泡沫高度分布。液体流动和混合模式通过基于示踪剂的实验进行可视化。在这项工作中彻底讨论了用于获取这些分布的方法。对处理过的实验数据的认真检查揭示了用于研究负载的操作筛板的流体动力学特性。托盘的大部分区域保持均匀的有效泡沫高度，而在甲板以上的多个高度观察到均匀的持液率分布，最高持液率出现在平均有效泡沫高度附近。基于示踪实验，在入口附近以抛物线速度分布检测到轴对称液体流动和混合模式。总体而言，对于所研究的载荷，剩余托盘甲板上的液体速度几乎是一致的。