EFFECT OF SHAFT ECCENTRICITY ON THE LAMINAR MIXING PERFORMANCE OF A RADIAL IMPELLER

被引：23

作者：

Cabaret, F. ^{[1
]}

Fradette, L. ^{[1
]}

Tanguy, P. A. ^{[1
]}

机构：

[1] Ecole Polytech, Dept Chem Engn, URPEI, Montreal, PQ H3C 3A7, Canada

来源：

CANADIAN JOURNAL OF CHEMICAL ENGINEERING | 2008年 / 86卷 / 06期

基金：

加拿大自然科学与工程研究理事会;

关键词：

laminar mixing; stirred tank; shaft eccentricity; segregated regions;

D O I：

10.1002/cjce.20103

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The effects of impeller eccentricity and Reynolds number on the mixing performance were studied for Rushton turbine stirred tank systems operated in the laminar regime (Re < 10). A digital image analysis of an acid-base decolourization reaction was used to characterize the mixing efficiency. Results show that both parameters have remarkable effects on the destruction of the toroidal segregated regions surrounding the Rushton turbine in laminar flow. Criteria are given to prevent the formation of these segregated regions in a tank. It is also shown that shaft eccentricity does not impact on the impeller power consumption.

引用

页码：971 / 977

页数：7

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