Optimized multivariable predictive control of an industrial distillation column considering hard and soft constraints

For a petrochemical distillation column, which separates chemical petrol, a multivariable predictive controller has been developed, simulated and implemented. Feed-forward disturbance control was designed for the compensation of the feed flow fluctuations. The weighting coefficients of the cost func...

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Bibliographic Details
Published in:	Control engineering practice Vol. 13; no. 7; pp. 913 - 927
Main Authors:	Volk, U., Kniese, D.-W., Hahn, R., Haber, R., Schmitz, U.
Format:	Journal Article
Language:	English
Published:	Elsevier Ltd 01-07-2005
Subjects:	Distillation columns Industrial control Optimisation Predictive control Process control Industrial control Optimisation Process control Distillation columns Predictive control
Online Access:	Get full text
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Summary:	For a petrochemical distillation column, which separates chemical petrol, a multivariable predictive controller has been developed, simulated and implemented. Feed-forward disturbance control was designed for the compensation of the feed flow fluctuations. The weighting coefficients of the cost function were optimised interactively during simulations. With predictive control not only the operation of the column but also the behaviour of the coupled furnace heating the columns became smoother. Simultaneously, the pressure was minimised which resulted in reduced duty (heating power) consumption.
ISSN:	0967-0661 1873-6939
DOI:	10.1016/j.conengprac.2004.09.007