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在直径(T)为2m、高(H)为0.8m的圆形搅拌槽内,采用三桨搅拌,桨型为CBYIII(桨径D=0.174m),3个桨在槽内均匀分布,通过对临界悬浮叶端线速度、沉积面积的分析,研究了搅拌桨槽内最优安装位置.结果表明,最优径向安装位置为距壁面0.285R(R为圆形搅拌槽半径,m)处;液位为0.3T时的搅拌效果优于0.2T和0.25T;但液位在一定(0.2T～0.3T)范围内对功率的影响微小.对比分析实验结果与文献数据可知,达到相同完全悬浮状态,立式多轴搅拌的功率消耗为单轴情况下(D=0.731m)的2.8倍,但立式多轴搅拌器的制造成本更低;与侧伸式搅拌相比,5%沉积面积时立式多轴搅拌节省20%能耗,且安装维护更简便,在大型储罐中具有广泛的工业应用前景.
In a round stirred tank with a diameter (T) of 2 m and a height (H) of 0.8 m, three paddles were used for stirring. The paddle type was CBYIII (diameter D = 0.174 m) The optimal installation position of the paddle was studied by analyzing the linear velocity and deposition area of the critical floating blade.Results show that the optimal radial installation position is 0.285R (R is the radius of the circular stirred tank, m) When the liquid level is 0.3T, the stirring effect is better than that of 0.2T and 0.25T, but the influence of the liquid level to a certain extent (0.2T ~ 0.3T) is small.Comparison of experimental results and literature data shows that the same complete suspension State, the power consumption of vertical multi-axis agitation is 2.8 times that of a single axis (D = 0.731 m), but the vertical multi-axis agitator has a lower manufacturing cost; compared with the side stretch agitation, the 5% Vertical multi-axis mixing saves 20% energy consumption, and installation and maintenance easier, in a large tank with a wide range of industrial applications.