On-line Parameter Estimation and Control for a Pilot Scale Distillation Column
نویسندگان
چکیده
A dynamic model developed in the HYSYS process simulator was validated using experimental data obtained from a pilot scale cyclohexane / n-heptane distillation. The resulting model was linked to the pilot unit’s DeltaV (Emerson Process Management) process control software. This link allowed non-measured parameter estimation to occur in parallel with the operation and control of the pilot plant column. To enhance the model’s accuracy, a novel model reconciliation methodology was implemented using output from the controller interface. A virtual sensor was also developed which predicted product compositions based on measured column parameters. Linear and non-linear multivariable control strategies were implemented and tested.
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