Dynamic Analysis and Controllability of Dividing-Wall Distillation Columns

摘要

This paper reports a dynamic analysis and controllability for the dividing-wallrndistillation columns (DWCs). In this study the controllability of DWCs using a threepointrncontrol structure and reversing loops in the three-point control structure isrninvestigated. To examine the performance of the proposed control system, twornillustrative case studies are presented as follows: the separation of ethanol – 1-propanolrn– 1-butanol mixture and the separation of methanol – ethanol – 1-propanol mixture.rnDynamic simulation is performed in the aim to demonstrate that the column handlesrnwell the feed flow and feed composition disturbances. The dynamic response of therninvestigated control strategies shows that DWCs have good controllability properties.