ESTIMATION OF THE DRYING RATE MOISTURE PROFILES IN AN INDUSTRIAL SPRAY DRYER BY MEANS OF EXPERIMENTAL INVESTIGATIONS AND A SIMULATION STUDY

A spray dryer simulation program is described. It is based on the know n conservation laws and permits determination of temperature and moist ure profiles and droplet trajectories inside spray dryers. An industri al spray dryer used in the manufacture of detergents serves as an exam ple to demonstrate the applicability of the program; this approach req uired prior experimental determination of the flow field and an axial temperature profile. On the basis of a rough estimate of the drying ra te in the spray dryer, good agreement was observed between experiment and simulation.