Numerical Analysis of Power Consumption and Mixing Time for a Pseudoplastic Liquid in Geometrically Similar Stirred Vessels with Several Kinds of Plate-type Impellers

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Kazuyoshi Arai¹  Meguru Kaminoyama¹  Mitsuo Kamiwano¹ 

[1] Department of Material Science and Chemical Engineering, Yokohama National University

关键词: Agitation;    Numerical Analysis;    Power Consumption;    Mixing Time;    Pseudoplastic Liquid;    Scale-up;   

DOI  :  10.1252/jcej.27.17

来源: Maruzen Company Ltd

【 摘 要 】

References(26)Cited-By(9)A numerical analysis method of estimating power consumption for a pseudoplastic liquid in stirred vessels fitted with various plate impellers is first presented in terms of the energy dissipation distribution in the vessels. The pseudoplastic liquid used was a 1.2 wt.% aqueous solution of hydroxyethyl cellulose. Good agreement between numerically analysed results and experimental data of power consumption in a model vessel of 0.2 m diameter with various impellers and in a vessel of 0.4 m diameter with a paddle impeller proved the method to be sufficiently reliable. Subsequently, the same analysis and mixing analysis were numerically performed for geometrically similar large-scale vessels of 0.4, 0.6 and 0.8 m diameters. It was ascertained from these analyses that the relation between the scale-up ratio and the power consumption, mixing time, and mixing energy can be quantitatively estimated by a numerical analysis of stirred vessels with various types of stirring impellers for a pseudoplastic liquid.

【 授权许可】

Unknown