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Revista EIA

Print version ISSN 1794-1237

Abstract

SANCHEZ CORREA, César Augusto; GOMEZ GARCIA, Miguel Ángel  and  RODRIGUEZ NINO, Gerardo. THERMODYNAMIC CHARACTERIZATION FOR HETEROGENEOUS ESTERIFICATION SYSTEMS IN REACTIVE DISTILLATION: I. REACTIVE ENVELOPES. Rev.EIA.Esc.Ing.Antioq [online]. 2013, n.20, pp.73-85. ISSN 1794-1237.

In this work, a novel approach for the calculation of the reactive liquid - liquid (LL) and vapor - liquid - liquid (VLL) envelopes is proposed. As the main contribution, the way of transforming the binodal lines calculation into the thermodynamic homotopy is explicitly defined. This transforms the problem solution to the theory of the continuation methods. Thus, a method for the localization of the critical point of reactive mixtures is also provided. Two cases of industrial interest are analyzed: the solution of acetic acid + 1-pentanol + water + n-amyl acetate and the solution acetic acid + 3-methyl-1-butanol + water + isoamyl acetate. At 101,325 kPa, the reactive VLL binodal lines are traced. They are similar to nonreactive type I binodal lines in ternary systems. For the n-amyl acetate case, the usefulness of those envelopes is exemplified in the calculation and graphical analysis of a distillation rectification section with multiple heterogeneous trays.

Keywords : n-amyl acetate; Isoamyl Acetate; Reactive Vapor - Liquid - Liquid Equilibria; Reactive Liquid - Liquid Equilibria; Reactive Binodal Lines; Reactive Distillation.

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