Dynamic Characteristics of Binary System Distillation Column (2)

The Analysis on Transient Response for a Change in Reflux Flow-Rate

Abstract

A previously reported experimental transient response of binary system distillation column to change in reflux flow-rate has very significant nonlinearity for reflux flow-rate increase and decrease. In order to analyse this behavior, transient response is calculated with the digital model in which nonlinearity of equilibrium relation, dependency on liquid composition of flow-rate and liquid hold-up on a tray are considered. The calculated transient response and temperature distribution agreed with experimental, results therefore the validity of the digital model described in this. paper is confirmed.