The effect of non‐ideal mixing on multiplicity in a nonadiabatic CSTR

Abstract

Abstract In this paper, the problems of multiplicity and uniqueness of steady states in a nonadiabatic CSTR are discussed, using the Cholette's model. The result shows that the parameters m (the fraction of the total volume which is perfectly mixed) and n (the fraction of the feed entering the zone of perfect mixing) of Cholette's model seem to strongly determine the multiplicity and uniqueness region. When parameters m and n are changed, the exact region of multiplicity will be shifted. In addition, we derive the necessary and sufficient conditions for steady state multiplicity and uniqueness in the non‐ideal mixing of CSTR. As the non‐ideal mixing takes place in a real reactor, our results will be of significant use in chemical reactor design.