SK静态混合器内停留时间分布的影响因素分析_金丹.pdfVIP

24 3 Vol . 24 No . 3 2011 6 JOURNAL OF PET ROCHEMICAL UNIVERSITIES Jun. 2011 : 1006- 396 (2011)03- 0070- 05 SK * 金 丹, 付海玲, 吴剑华 , 孙 丹 ( , 110142) : 采用脉冲示踪法对SK 静态混合器内停留时间进行了实验测试, 设计混合正交实验并且采用 差分 析方法研究各因素对停留时间分布的影响结果表明, 影响平均停留时间的各因素大小依次为流速管径截面旋 片排列方式; 影响方差的各因素大小依次为管径截面流速旋片排列方式从停留时间分布曲线中可以看出, 在 相同流速和直径下, 沿着轴线方向, 静态混合器内流动趋于活塞流采用幂函数形式对混合元件数管径及流速等 对平均停留时间的影响进行了量化分析, 并针对D = 40 mm 的静态混合器对此幂函数的正确性进行了验证,平均误i 差为12% 在较低流速下, 由于 壁流的影响靠近混合器入口处方差值偏大总的来说, 方差分析结果与停留时间 分布曲线分析结果相一致 : 静态混合器; 停留时间分布; 流速; 活塞流; 幂函数 : T Q051.7 : A doi: 10.3696/ j. issn. 1006- 396 .2011. 03.017 Analysis for the Effect of Factors on Residence T ime Distribution in Kenics Static Mixer * JIN Dan, FU Hai- ling, WU Jian- hua , SUN Dan ( School of Mechanical E ng ineering , S henyang University of Chemical Technology , S henyang L iaoning 110142, P. R. China) Receiv ed 26 p ril 2011; rev ised 9 J une 2011; accep ted 15 June 2011 Abstract: The experiments of residence time distribution in SK static mixer were done by using the pulse tracer method. The effect of different factors on residence time distribution was evaluated based on mixed orthogonal experiments. T he results of range analysis showed that the factors impacting the mean residence time were velocity, diameter, cross section, and arrange mode of elements in turn; but for variance the factors were diameter, cross section, velocity, and arrange mode of elements in turn. From the comparison of residence time distribution curves, the flow in the static mixer tended to be plug flow along the axial direction at the sa