CIESC Journal

• 化工学报 • 上一篇    下一篇

轴流式翼型-透平组合桨在搅拌釜内的流动

叶雯,方夏虹,戴干策   

  1. 华东理工大学联合化学反应工程研究所!上海200237,华东理工大学联合化学反应工程研究所!上海200237,华东理工大学联合化学反应工程研究所!上海200237
  • 出版日期:1995-06-25 发布日期:1995-06-25

FLOW GENERATED BY AXIAL FOIL-TURBINE COMBINED IMPELLERS IN STIRRED TANK

Ye Wen, Fang Xiahong and Dai Gance(Unilab Research Center of Chemical Reaction Engineering, East China University of Science and Technology, Shanghai 200237)   

  • Online:1995-06-25 Published:1995-06-25

摘要: <正>搅拌反应器是化工、医药、食品工业中广泛应用的基础设备之一,当搅拌釜内液深与搅拌釜直径相比较大时(通常比值大于1),往往采用双层或多层桨,以保证顶部到底部的循环流动。 透平桨产生的是径向流,形成以桨叶为中心线的上、下2个循环区,桨叶附近剪切速率高,气体分散能力强。翼型桨产生的流型是轴向流,形成全釜循环,混合均匀,剪切温和。为充分利用两者优势,加强全釜混合,剪切适度,特别是在粘稠物系中,可采用组合桨。目前尚未看到对翼型-透平组合桨流动状况的研究,而对于非牛顿流体中的组合桨流动状况则了解

Abstract: The flow fields generated by axial foil - turbine combined impellers were investigated with a Laser Doppler Anemometer. Flow patterns, velocities, shear rates, pump capacities and power were obtained in both water and 1. 5% (mass) CMC solutions. The effect of distance between two impellers on flow characterisitics was viewed in detail.

中图分类号: