Application of Constrained Linear MPC to a Spray Dryer

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Abstract

In this paper we develop a linear model predictive control (MPC) algorithm for control of a two stage spray dryer. The states are estimated by a stationary Kalman filter. A non-linear first-principle engineering model is developed to simulate the spray drying process. The model is validated against experimental data and able to precisely predict the temperatures, the air humidity and the residual moisture in the dryer. The MPC controls these variables to the target and reject disturbances. Spray drying is a cost-effective method to evaporate water from liquid foods and produces a free flowing powder. The main challenge of spray drying is to meet the residual moisture specification and prevent powder from sticking to the chamber walls. By simulation we compare the performance of the MPC against the conventional PID control strategy. During an industrially recorded disturbance scenario, the MPC increases the production rate by 7.9%, profit of production by 8.2% and the energy efficiency by 4.1% on average.
Original languageEnglish
Title of host publicationProceedings of the IEEE Conference on Control Applications (CCA), 2014
PublisherIEEE
Publication date2014
Pages2120-2126
ISBN (Print)978-1-4799-7409-2
DOIs
Publication statusPublished - 2014
Event2014 IEEE Multi-Conference on Systems and Control - Antibes Congress Center, Antibes, France
Duration: 8 Oct 201410 Oct 2014
http://www.msc2014.org/

Conference

Conference2014 IEEE Multi-Conference on Systems and Control
LocationAntibes Congress Center
CountryFrance
CityAntibes
Period08/10/201410/10/2014
OtherAlso include the IEEE International Symposium on Intelligent Control (ISIC) 2014
Internet address

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