The factors such as gas and liquid rate hole diameter and tray free areas weir height influencing transition from froth to spray regime on sieve trays were studied .

考察气、液负荷，孔径，开孔率以及 堰高等因素对工况转变的影响。

The liquid height on the tray increases with the increase of the intensity of liquid flow and the height of weir but fundamentally the effect of the hole-air-speed is relatively smaller ;

板上的 清液层高度随液流强度的增加而增加；随着 堰高的增加而增加；