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.


Limit Cycles in Homogeneous Azeotropic Distillation


M. Lee, C. Dorn, G.A Meski, M. Morari

vol. AUT99-01

In spite of significant nonlinearities even in the simplest model, the distillation literature generally takes it for granted that distillation columns display relatively simple dynamic behavior. For example, although widely observed in chemical reactors, any instances of periodic oscillations have not yet been associated with models of distillation columns. In this 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 (limit cycle). 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

Type of Publication:

(04)Technical Report

No Files for download available.
% Autogenerated BibTeX entry
@TechReport { LeeEtal:1999:IFA_1434,
    author={M. Lee and C. Dorn and G.A Meski and M. Morari},
    title={{Limit Cycles in Homogeneous Azeotropic Distillation}},
Permanent link