物理消泡型塔板的试验研究

Study on physical bubble elimination tray

针对易起泡物系的特点,设计具有物理消泡功能的4种复合型塔板结构。实验在200mm×70mm的无降液管有机玻璃塔中进行,以空气-5%碳酸钾水溶液为实验研究物系,采用测量4次取平均的方法测定普通塔板和复合型塔板的泡沫层高度,并用毛细管光电测量仪测量气泡sauter直径。结果表明,复合型塔板能有效地抑制泡沫层高度和细化气泡直径,减少雾沫夹带,提高塔板效率。其中将填料置于距塔板一定高度的复合型塔板消泡效果最好。

Aiming at the peculiarities of bubbling system, four combined tray structures with physical bubble elimination function were designed. Foam height of traditional tray and combined tray were measured based on air-5% potassium carbonate solution system. Sauter diameter of bubble was scaled with capillary photo electricity meter. The results show that combined tray can effectively restrain foam height and bubble diameter, decrease entrainment, and enhance tray efficiency.