Optimal Closed-loop Operation of Binary Batch Distillation Columns
| Authors: | Alvarez Jesus, Universidad Autonoma Metropolitana - Iztapalapa, Mexico
Castellanos-Sahagun Eduardo, Universidad Autonoma Metropolitana - Iztapalapa, Mexico
Fernandez Carlos, Universidad Autonoma Metropolitana - Iztapalapa, Mexico
Aguirre Salvador, Universidad Autonoma Metropolitana - Iztapalapa, Mexico |
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| Topic: | 6.1 Chemical Process Control |
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| Session: | Process Optimization and Predictive Control |
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| Keywords: | Distillation columns, batch control, material balance control, chemical variables control, optimal control, estimators |
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Abstract
Abstract: The problem of designing an on-line optimizing robust output-feedback (OF) controller for binary batch distillation columns with temperature measurements is addressed. The combination of optimality, passivity and detectability notions leads to an estimator-based material balance controller that, for an ample range of load compositions maximizes the profit and yields the prespecified product purity. The scheme has: (i) a criterion to choose the sensor number and locations, (ii) an event controller that decides the total reflux, start-up and partial reflux withdrawal periods, and (iii) a tracking controller that steers the batch distillation column motion along an on-line optimized path. The approach is applied to a previously studied example. Copyright © 2005 IFAC.
