Note: This content is accessible to all versions of every browser. However, this browser does not seem to support current Web standards, preventing the display of our site's design details.

  

Interesting Dynamics in Azeotropic Distillation Systems

Author(s):

M. Lee, C. Dorn, G.A Meski, M. Morari
Conference/Journal:

IFAC Symposium on Dynamics and Control of Process Systems, Korfu, Greece, pp. 116-122, DYCOPS-5
Abstract:

In spite of significant nonlinearities even in the simplest model, some types of steady-state and dynamic behavior common for nonlinear systems have never been associated with distillation columns. In recent years, multiplicity of steady states has been a subject of much research and is now widely accepted. Subsequently, stability of steady states has been explored. Another phenomenon that, although widely observed in chemical reactors, has not yet been associated with models of distillation columns is the existence of periodic oscillations.

In this (1)Article we study the steady-state and dynamic behavior of the azeotropic distillation of the ternary homogeneous system methanol--methyl butyrate--toluene. Our simulations reveal nonlinear behavior not reported in earlier studies. Under certain conditions, the open-loop distillation system shows a ``sustained'' oscillation associated with branching to periodic solutions. The limit cycles are accompanied by traveling waves inside the column. Significant underdamped oscillations are also observed over a wide range of product rates. To our knowledge, this is the first simulation result reporting the presence of Hopf bifurcation points in open-loop distillation models.



Further Information
Year:

1998
Type of Publication:

(01)Article
Supervisor:



File Download:

Request a copy of this publication.
(Uses JavaScript)
% Autogenerated BibTeX entry
@InProceedings { LeeEtal:1998:IFA_363,
    author={M. Lee and C. Dorn and G.A Meski and M. Morari},
    title={{Interesting Dynamics in Azeotropic Distillation Systems}},
    booktitle={IFAC Symposium on Dynamics and Control of Process Systems},
    pages={116--122},
    year={1998},
    address={Korfu, Greece},
    url={http://control.ee.ethz.ch/index.cgi?page=publications;action=details;id=363}
}
Permanent link