The study of onset of gas induction and power consumption after gas induction in a gas induced agitation tank with baffle lower than liquid surface.

• Main Authors: Yen Wen Hsin, 顏文信
• Other Authors: Yung Chien Hsu
• Format: Others
• Language: zh-TW
• Published: 1996
• Online Access: http://ndltd.ncl.edu.tw/handle/79635126253546247732

碩士 === 國立臺灣科技大學 === 化學工程研究所 === 84 === The study presents behavior of gas induction and power consumption consumed after gas induction in a modified gas- induced agitated tank. Two 45。 pitched-blade downward turbines were in series employed as the agitator. The length and width of baffle in this tank are smaller than those of the conventional agitated tank. While the impellers swirl at high speed, the vortex is formed at the central surface of the liquid. The merits of higher gas utilization ratio, longer gas retention time in liquid, and lower power consumption for agitation can be achieved. In the experimental studies, tap water and air were used as operational fluids. Several variables including the impeller speed, the diameter of impellers, the height of liquid level, and the width of baffles have been considered. In the experimental results, the dimensionless correlation of critical gas induction point and power consumption of agitation have been obtained.