ABSTRACT
One possible approach to model the spray drying process is to treat the process as a grey box. The primary advantage of this form of spray dryer modelling, which in essence is a mass and energy balance for the operating unit, is to allow plant-wide prediction of the drying process in the steady state. One of the main challenges in such a model is in the prediction of the final powder moisture content leaving the drying chamber. The chapter then progresses to discuss a framework which can be used to model the spray dryer as a two-dimensional system. This framework can then be used as a quick training tool or as a design scoping tool. The last part of this chapter focuses on the application of the Computational Fluid Dynamics (CFD) technique for spray dryer modelling. A general framework of the CFD technique will be discussed, followed by important features and limitations of the technique.
