AUTOMATION OF INDUSTRIAL SPRAY DRYER
Ivan Bajsic, E. Kranjcevic · Instrumentation Science & Technology · 2001
In this article, we illustrate some basic principles of spray drying which is, by definition, the transformation of feed from the fluid state into a dried particulate form by spraying the feed into a hot drying medium. It is a one step, continuous particle-processing operation involving drying. The aim of a spray-dryer control system is the maintenance of desired dried product quality, irrespective of what disturbances occur within the drying operation and variations of feed supply. With our counter-current spray dryer (diameter 5.5 m, height 20 m), we produce zeolite (granulate form). It is manually controlled with fully automated equipment for continuous measurement of process parameters. With the implementation of Fuzzy control,1-3 Zadeh, L. A. 1973. Outline of a New Approach to the Analysis of Complex Systems and Decision Processes. IEEE Trans. Syst., Man and Cybernetics, SMC-3: 28–44. Mamdani, E. H. 1974. Application of Fuzzy Algorithms for Control of Simple Dynamic Plants. Proc. IEEE, : 1585–1588. Evans, G. W., Karowski, W. and Wilhelm, M. R. 1989. Application of Fuzzy Set Methodologies in Industrial Engineering Amsterdam, Oxford, New York, Tokyo we would like to increase process stability and, above all, reach constant product quality.