Comparison of mathematical models for tray distillation column

Abstract

Presented paper deals with mathematical models of a pilot-plant bubble-cup tray distillation column. Two universal models have been derived by the mathematical-physical analysis. Two versions of models have been considered in the simple transfer function form. Step responses and responses to more complex input signals have been measured. Values of models unknown parameters have been estimated from experimental data by the numerical optimisation. The models are verified for more complex input signal and the closed loop.