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Experimental and Computational Studies of Aerated Stirred Tank with Dual Impeller

Authors
  • Teli, Shivanand M.1
  • Pawar, Viraj S.2
  • Mathpati, Channamallikarjun1
  • 1 Institute of Chemical Technology, 400019 , (India)
  • 2 Gharda Institute of Technology, Khed , (India)
Type
Published Article
Journal
International Journal of Chemical Reactor Engineering
Publisher
De Gruyter
Publication Date
Feb 15, 2020
Volume
18
Issue
3
Identifiers
DOI: 10.1515/ijcre-2019-0172
Source
De Gruyter
Keywords
License
Yellow

Abstract

Stirred tanks are commonly used in chemical and allied industries for reaction and separation. In order to improve the mixing performance, large scale reactors are often equipped with multiple impellers. In the case of gas-liquid systems, the gas hold-up, mass transfer coefficient, and interfacial area strongly depend on the size and type of impellers, clearance between impellers and superficial gas velocity. In the present work, the effect of the impeller speed, superficial gas velocity, and top impeller position has been investigated on gas hold-up, interfacial area, and mass transfer coefficient. Computational fluid dynamics have been carried out for the multiphase multi-impeller system and the model predictions have been compared with the experimental data.

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