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Multiple Steady States in Distillation: Effect of VL(L)E Inaccuracies

Author(s):

N. Bekiaris, T.E. GŁttinger, M. Morari
Conference/Journal:

AIChE Journal, vol. 46, no. 5, pp. 955-979
Abstract:

Output multiplicities in heterogeneous azeotropic distillation columns were studied. The accuracy of the thermodynamic descriptionis 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 Bekiarisetal (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 phenomen acausing them.

Further Information
Year:

2000
Type of Publication:

(01)Article
Supervisor:



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% Autogenerated BibTeX entry
@Article { BekG_t:2000:IFA_84,
    author={N. Bekiaris and T.E. G{\"u}ttinger and M. Morari},
    title={{Multiple Steady States in Distillation: Effect of VL(L)E
	  Inaccuracies}},
    journal={AIChE Journal},
    year={2000},
    volume={46},
    number={5},
    pages={955--979},
    month=may,
    url={http://control.ee.ethz.ch/index.cgi?page=publications;action=details;id=84}
}
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