شماره ركورد كنفرانس :
5041
عنوان مقاله :
Pellet Flow in a Würster Coating Device
Author/Authors :
M. Foroughi-Dahr Multiphase Systems Research Lab. - School of Chemical Engineering - College of Engineering, University of Tehran, Tehran, Iran , R. Sotudeh-Gharebagh Multiphase Systems Research Lab. - School of Chemical Engineering - College of Engineering, University of Tehran, Tehran, Iran , N. Mostoufi Multiphase Systems Research Lab. - School of Chemical Engineering - College of Engineering, University of Tehran, Tehran, Iran
كليدواژه :
Würster , Hydroxypropyl methylcellulose/Polyethylene glycol , Pharmaceutics , Pressure drop
عنوان كنفرانس :
The 10th International Chemical Engineering Congress & Exhibition (IChEC 2018)
چكيده فارسي :
فاقد چكيده فارسي
چكيده لاتين :
Flow of pellets was studied in a Würster coating device. For this purpose, Hydroxypropyl methylcellulose / Polyethylene glycol coating solution was used for coating glass beads in the Würster coatingdevice. It was found that the minimum spouting velocity occurs at the maximum pressure drop across the draft tube and across the annular region. According to the experimental results, stable spouting can be obtained at about 1.2times the minimum spouting velocity. It was also shown that during the coating experiment, a higherminimum spouting velocity leads to more rapid movement of pellets in the draft tube at the beginning of the coating process. This study provides valuable information about the Würstercoating device which can be used for a more uniform coating.
