The influences of column diameter and height on the countercurrent flotation process were discussed, and the new concepts of choked air bubbles and area load were put forward.
论述了柱径与柱高对逆流浮选柱浮选过程的影响，提出了气阻、面积负荷的概念。
2
At present, a few CFD simulations of countercurrent of liquid and gas in the bubble column are found.
目前，关于鼓泡塔内气液逆流操作的CFD模拟计算还很少。
3
The process for concentrating natural vitamin E in the dual-column continuous countercurrent supercritical extraction is studied.