Rüdiger von Watzdorf, Jürgen Bausa, Wolfgang Marquardt:
Shortcut methods for nonideal multicomponent distillation: 2. complex columns
AIChE Journal, 1999, 45(8), 1615-1628
In a previous article of the authors (Bausa et al., 1998) the Rectification Body Method (RBM) was introduced for the fast calculation of the minimum reflux of nonideal and azeotropic multicomponent separations. In this article, the RBM is generalized to two important classes of complex columns: 1. Columns having sidestreams and 2. Columns with one or several side enricher and/or side stripper columns. As in the case of simple columns the method is entirely general and does not require any a-priori information on the limiting pinches prevailing in the various column sections.
Minimum reflux, azeotropic distillation; pinch point, sidestream, side stripper, side enricher.