MODIFIED SUCCESSIVE ITERATION METHOD

MULTICOMPONENT DISTILLATION OF NON-IDEAL MIXTURES

Abstract

A new calculation method is proposed for a non-ideal multicomponent distillation column with one feed. The Successive Iteration Method proposed by Sugie and Yamada was modified basing on the principles of perturbation. The over-correction of the relative volatility in an iterative process is improved by introducing a parameter n whose value determines the magnitude of the correction. The six examples considered by Hirose and Hiraiwa and two additional examples were considered in this investigation for testing the applicability of the proposed method. A comparison with the methods available in the literature indicates that the proposed method gives excellent convergence.