ESTIMATION OF MIXING TIME FOR HELICAL SCREW IMPELLERS WITH A DRAUGHT TUBE

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ESTIMATION OF MIXING TIME FOR HELICAL SCREW IMPELLERS WITH A DRAUGHT TUBE

Zhu Xiulin (Chemical Engineering Department, Suzhou University, Suzhou 215006)Song Qiuan, Wang Kai and Pan Zuren (Chemical Engineering Department, Zhejiang University, Hangshou 310027)

Online:1992-08-25 Published:1992-08-25

螺杆-导流筒搅拌器的混合时间估算

朱秀林,宋秋安,王凯,潘祖仁

苏州大学化工系,浙江大学化工系,浙江大学化工系,浙江大学化工系苏州215006 ,杭州310027 ,杭州310027 ,杭州310027

Abstract

Abstract: The distributions of circulation time were obtained by means of a single suspend bead for sixteen types of helical screw impellers with a draught tube in the laminar regime. The distributions were almost independent of the Reynolds number and were characterized by a single peak.

摘要： 采用单个悬浮粒子法测定了多种不同几何尺寸的螺杆-导流简搅拌器的循环时间分布.实验发现,该分布曲线一般呈单峰分布,基本上与Re数无关,可以用指数衰减函数表示成P(θ)=aexp[-a(θ-θ_0)]在层流区,衰减系放a_c与搅拌转速成正比a_c/N=c_5(常数)C_6是表征循环性能的一个参数(同频度).由回归分析得到c_5=1.62A_c~(0.260)(p/d_r)~(0.297)(d/d_r)~(4.460)/c_3可以由下式来估算搅拌器的混合时间c_1=-12.91nJ/(c_3c_5)

Zhu Xiulin (Chemical Engineering Department, Suzhou University, Suzhou 215006)Song Qiuan, Wang Kai and Pan Zuren (Chemical Engineering Department, Zhejiang University, Hangshou 310027). ESTIMATION OF MIXING TIME FOR HELICAL SCREW IMPELLERS WITH A DRAUGHT TUBE[J]. .

朱秀林,宋秋安,王凯,潘祖仁. 螺杆-导流筒搅拌器的混合时间估算 [J]. CIESC Journal.