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Title: Multiple steady states in distillation: Effect of VL(L)E inaccuracies

Abstract

Output multiplicities in heterogeneous azeotropic distillation columns were studied. The accuracy of the thermodynamic description is a key factor that determines if multiplicities can be observed in numerical simulations. The descriptions used in the multiplicity-related literature are analyzed. The {infinity}/{infinity} analysis of Bekiaris et al. (1996) was used to check implications of inaccuracies in the reported thermodynamics on the existence of multiplicities in azeotropic distillation. On this basis, guidelines are derived concerning what features of thermodynamic descriptions need special attention for use in multiplicity prediction and simulation. secondly, numerical studies on output multiplicities in heterogeneous azeotropic distillation in the literature were compared to the {infinity}/{infinity} predictions wherever possible. The {infinity}/{infinity} analysis was used to derive the relations between the reported multiplicities and to identify the physical phenomena causing them.

Authors:
; ;
Publication Date:
Research Org.:
California Inst. of Tech., Pasadena, CA (US)
OSTI Identifier:
20080309
Resource Type:
Journal Article
Journal Name:
AIChE Journal (American Institute of Chemical Engineers)
Additional Journal Information:
Journal Volume: 46; Journal Issue: 5; Other Information: PBD: May 2000; Journal ID: ISSN 0001-1541
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; DISTILLATION; AZEOTROPE; THERMODYNAMIC PROPERTIES; CHEMICAL INDUSTRY

Citation Formats

Bekiaris, N., Guettinger, T.E., and Morari, M. Multiple steady states in distillation: Effect of VL(L)E inaccuracies. United States: N. p., 2000. Web. doi:10.1002/aic.690460510.
Bekiaris, N., Guettinger, T.E., & Morari, M. Multiple steady states in distillation: Effect of VL(L)E inaccuracies. United States. doi:10.1002/aic.690460510.
Bekiaris, N., Guettinger, T.E., and Morari, M. Mon . "Multiple steady states in distillation: Effect of VL(L)E inaccuracies". United States. doi:10.1002/aic.690460510.
@article{osti_20080309,
title = {Multiple steady states in distillation: Effect of VL(L)E inaccuracies},
author = {Bekiaris, N. and Guettinger, T.E. and Morari, M.},
abstractNote = {Output multiplicities in heterogeneous azeotropic distillation columns were studied. The accuracy of the thermodynamic description is a key factor that determines if multiplicities can be observed in numerical simulations. The descriptions used in the multiplicity-related literature are analyzed. The {infinity}/{infinity} analysis of Bekiaris et al. (1996) was used to check implications of inaccuracies in the reported thermodynamics on the existence of multiplicities in azeotropic distillation. On this basis, guidelines are derived concerning what features of thermodynamic descriptions need special attention for use in multiplicity prediction and simulation. secondly, numerical studies on output multiplicities in heterogeneous azeotropic distillation in the literature were compared to the {infinity}/{infinity} predictions wherever possible. The {infinity}/{infinity} analysis was used to derive the relations between the reported multiplicities and to identify the physical phenomena causing them.},
doi = {10.1002/aic.690460510},
journal = {AIChE Journal (American Institute of Chemical Engineers)},
issn = {0001-1541},
number = 5,
volume = 46,
place = {United States},
year = {2000},
month = {5}
}