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

TitleCFD simulation of liquid-phase mixing in solid-liquid stirred reactor
Publication TypeJournal Article
Year of Publication2008
AuthorsKasat, GR, Khopkar, AR, Ranade, VV, Pandita, AB
JournalChemical Engineering Science
Volume63
Issue15
Pagination3877-3885
Date PublishedAUG
Type of ArticleArticle
ISSN0009-2509
KeywordsCFD, mixing, solid suspension, stirred reactor
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-epsilon. 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. (c) 2008 Elsevier Ltd. All rights reserved.

DOI10.1016/j.ces.2008.04.018
Type of Journal (Indian or Foreign)Foreign
Impact Factor (IF)2.75
Divison category: 
Catalysis and Inorganic Chemistry