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Title: CFD modeling of mass-transfer processes in randomly packed distillation columns

Abstract

The volume-averaged equations for velocity and concentration fields have been used to simulate the hydrodynamics and mass-transfer processes in randomly packed distillation columns. This approach is regarded as a second-generation computational fluid dynamics (CFD) based model, and a significant departure from the traditional one-dimensional, first-generation models. The model has ability to capture radial and axial variations in flow and mass-transfer conditions. The spatial variation of void fraction has been included to take into account the effect of bed structures. The simulation results have been compared with experimental data reported by Fractionation Research, Inc. (FRI) which performed their tests in a 1.22-m-diameter column with a packed bed height of 3.66 m. For validation, the authors have used data obtained with 15.9-, 25.4-, and 50.8-mm metal Pall rings at various operating conditions. Good agreement between CFD predictions and published experimental data has been obtained. This is regarded as an encouraging sign that CFD models can play a useful role in studying separation processes.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Univ. of Alberta, Edmonton, Alberta (CA)
OSTI Identifier:
20076079
Resource Type:
Journal Article
Journal Name:
Industrial and Engineering Chemistry Research
Additional Journal Information:
Journal Volume: 39; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0888-5885
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; DISTILLATION EQUIPMENT; FLOW MODELS; MASS TRANSFER; HYDRODYNAMICS; PACKED BEDS; FLUID MECHANICS

Citation Formats

Yin, F.H., Sun, C.G., Afacan, A., Nandakumar, K., and Chuang, K.T. CFD modeling of mass-transfer processes in randomly packed distillation columns. United States: N. p., 2000. Web. doi:10.1021/ie990539+.
Yin, F.H., Sun, C.G., Afacan, A., Nandakumar, K., & Chuang, K.T. CFD modeling of mass-transfer processes in randomly packed distillation columns. United States. doi:10.1021/ie990539+.
Yin, F.H., Sun, C.G., Afacan, A., Nandakumar, K., and Chuang, K.T. Mon . "CFD modeling of mass-transfer processes in randomly packed distillation columns". United States. doi:10.1021/ie990539+.
@article{osti_20076079,
title = {CFD modeling of mass-transfer processes in randomly packed distillation columns},
author = {Yin, F.H. and Sun, C.G. and Afacan, A. and Nandakumar, K. and Chuang, K.T.},
abstractNote = {The volume-averaged equations for velocity and concentration fields have been used to simulate the hydrodynamics and mass-transfer processes in randomly packed distillation columns. This approach is regarded as a second-generation computational fluid dynamics (CFD) based model, and a significant departure from the traditional one-dimensional, first-generation models. The model has ability to capture radial and axial variations in flow and mass-transfer conditions. The spatial variation of void fraction has been included to take into account the effect of bed structures. The simulation results have been compared with experimental data reported by Fractionation Research, Inc. (FRI) which performed their tests in a 1.22-m-diameter column with a packed bed height of 3.66 m. For validation, the authors have used data obtained with 15.9-, 25.4-, and 50.8-mm metal Pall rings at various operating conditions. Good agreement between CFD predictions and published experimental data has been obtained. This is regarded as an encouraging sign that CFD models can play a useful role in studying separation processes.},
doi = {10.1021/ie990539+},
journal = {Industrial and Engineering Chemistry Research},
issn = {0888-5885},
number = 5,
volume = 39,
place = {United States},
year = {2000},
month = {5}
}