一种具有机械消泡功能的新型塔板

A new type of tray for mechanical defoaming

研究开发了一种具有机械消泡功能的新型塔板.该塔板是在普通塔板上放置一种特制的新型机械消泡构件.该构件由相互平行的波纹消泡板组成,构件下半部分沉浸在塔板泡沫层中,起削弱泡沫层波峰高度和降低泡沫层高度的作用,上半部分处于泡沫层上部的气相空间,起惯性除沫的作用.实验结果表明:对于易起泡物系,机械消泡构件能降低雾沫夹带量61%～76%,并大幅削弱泡沫层表面过高的泡沫波峰;对不易起泡物系,机械消泡构件还能降低泡沫层高度15.2%～17.1%.因此,该塔板可以起到延缓塔板泡沫层过高液泛和过量雾沫夹带液泛的作用,具有良好的消泡效果.

A new type of tray for mechanical defoaming is developed, which has a new structural component for mechanical defoaming placed over it. That structural component is composed of corrugated sheets parallel each other. And the lower section of the component is immersed in the tray froth for reducing tray forth height and froth peak, with the higher section in the disengagement space above tray froth for diminishing entrainment. The experimental results indicated that the structural component was able to diminish entrainment by 61%- 76%, reducing steep froth peak on tray froth surface for the foaming system ,and could additionally decrease the tray forth height by 15.2% - 17.1% for the nonfoaming system. Therefore,the new tray can defoam effectively, delaying flood of tray forth and of excessive entrainment.