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Multiple Steady States in Heterogeneous Azeotropic Distillation

Bekiaris, Nikolaos and Meski, George A. and Morari, Manfred (1996) Multiple Steady States in Heterogeneous Azeotropic Distillation. Industrial & Engineering Chemistry Research, 35 (1). pp. 207-227. ISSN 0888-5885. doi:10.1021/ie940493e.

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In this article, we study multiple steady states in ternary heterogeneous azeotropic distillation. We show that in the case of infinite reflux and an infinite number of trays, one can construct bifurcation diagrams on physical grounds with the distillate flow as the bifurcation parameter. Multiple steady states exist when the distillate flow varies nonmonotonically along the continuation path of the bifurcation diagram. We show how the distillate and bottom product paths can be located for tray or packed columns, with or without decanter and with different types of condenser and reboiler. We derive a necessary and sufficient condition for the existence of these multiple steady states based on the geometry of the product paths. We also locate in the composition triangle the feed compositions that lead to these multiple steady states. We show that the prediction of the existence of multiple steady states in the case of infinite reflux and an infinite number of trays has relevant implications for columns operating at finite reflux and with a finite number of trays.

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Additional Information:© 1996 American Chemical Society. Received for review August 15, 1994; Revised manuscript received March 17, 1995; Accepted July 20, 1995. Publication Date (Web): January 8, 1996. We acknowledge gratefully the financial support of the donors of the Petroleum Research Fund, administered by the American Chemical Society, and of the I. S. Latsis Foundation. We also thank Prof. Seider (University of Pennsylvania, Philadelphia) and Prof. Michelsen (Danish Technical University, Lyngby) for providing us thermodynamic subroutines.
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American Chemical Society Petroleum Research FundUNSPECIFIED
I. S. Latsis FoundationUNSPECIFIED
Issue or Number:1
Record Number:CaltechAUTHORS:20170809-101639023
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Official Citation:Multiple Steady States in Heterogeneous Azeotropic Distillation. Nikolaos Bekiaris, George A. Meski, and Manfred Morari Industrial & Engineering Chemistry Research 1996 35 (1), 207-227 DOI: 10.1021/ie940493e
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:80010
Deposited By: Tony Diaz
Deposited On:09 Aug 2017 17:41
Last Modified:15 Nov 2021 17:52

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