Laboratory Experiment on the Control of Distillation Column Pressure by Microprocessor

The column and its principal indtruments and actuators are illustrated diagramatically in Fig 1. A preheated, binary (two-component)mixture of liquids, usually water and ethyl alcohol, is fed into the column at its midway point at a feedrate F(t)as indicated and the separated products taken off at rates D (t) and W (t) at the top and bottom of the plant respectively