CFD simulation of liquid-phase mixing in solid-liquid stirred reactor

G. R. Kasat, A. R. Khopkar, V. V. Ranade*, A. B. Pandit

*Corresponding author for this work

Research output: Contribution to journalArticle

152 Citations (Scopus)

Abstract

A comprehensive CFD model was developed to gain an insight into solid suspension and its implications on the liquid-phase mixing process in a solid-liquid stirred reactor. The turbulent solid-liquid flow in a stirred reactor was simulated using a two-fluid model with the standard k - ε{lunate} turbulence model with mixture properties. The multiple reference frames (MRFs) approach was used to simulate impeller rotation in a fully baffled reactor. The computational model with necessary sub-models was mapped on to a commercial solver FLUENT 6.2 (of Fluent Inc., USA). The predicted solid concentration distribution was compared with the experimental data of Yamazaki et al. [1986. Concentration profiles of solids suspended in a stirred tank. Powder Technology 48, 205-216]. The computational model was then further extended to simulate and understand the implications of the suspension quality on liquid-phase mixing process. The computational model and the predicted results discussed here will be useful for understanding the liquid-phase mixing process in stirred slurry reactors in various stages of solid suspension.

Original languageEnglish
Pages (from-to)3877-3885
Number of pages9
JournalChemical Engineering Science
Volume63
Issue number15
DOIs
Publication statusPublished - Aug 2008
Externally publishedYes

Keywords

  • CFD
  • Mixing
  • Solid suspension
  • Stirred reactor

ASJC Scopus subject areas

  • Chemical Engineering(all)

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