A novel technique for the determination of single-particle drying kinetics in a closed 45kHz acoustic levitator is presented. Practical handling is trouble-free, the moisture content of the outlet air stream is measured online by a high accuracy dew point hygrometer. Experimental data show low noise and can easily be transformed to drying curves. Investigations with γ-Al2O3 have been carried out at different air velocities and moderate temperatures. The resulting drying curves are comparable to previous findings from a drying channel or a microbalance. Slightly higher drying rates and a lower critical moisture content in the levitator could indicate moderate interaction between the ultrasonic waves and the drying process. © 2002 Elsevier Science B.V. All rights reserved.
CITATION STYLE
Groenewold, C., Möser, C., Groenewold, H., & Tsotsas, E. (2002). Determination of single-particle drying kinetics in an acoustic levitator. In Chemical Engineering Journal (Vol. 86, pp. 217–222). https://doi.org/10.1016/S1385-8947(01)00292-3
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