h e r s t , M.4 01003 Correspondencc concerning this article chould he addresicd t o bl. F. Malonu.
splits and applies to all homogeneous mixtures, regardless of the number of azeotropes or components. First we describe the data structures and a method for calculating their properties from a vapor-liquid equilibrium model. Next, we relate these results to feasibility of various splits. This is followed by several examples. We have not attempted to develop a systematic procedure for generating alternative sequences of distillation columns. However, we are optimistic that such a procedure could be readily developed by combining the feasibility methods from this article with the statc-task network formalism in (Sargent. 1998).
Representation of the Residue Curve Structure
for the residue curve map equation:
Pure componcnts and azeotropes are the singular points Model equations for continuous-column sections have fixed points at total reflux that are the same as the singular points of Eq. 1. This allows the representation of certain limiting cases based on the structure of the residue curves. In mixtures with more than four components, where graphical methods fail. the directed adjacency matrix, A . and a related