Journal
POWDER TECHNOLOGY
Volume 355, Issue -, Pages 93-105Publisher
ELSEVIER
DOI: 10.1016/j.powtec.2019.07.017
Keywords
Mono-disperse droplet spray dryer; CFD; Two-phase flow; Reaction engineering approach; Optimization
Categories
Funding
- National Key Research and Development Program of China (International S&T Cooperation Program, ISTCP) [2016YFE0101200]
- Natural Science Foundation of Jiangsu Province [BK20170062]
- National Natural Science Foundation of China [21406148]
- Jiangsu Innovation and Entrepreneurship (Shuang Chuang) Program
- Jiangsu Specially-Appointed Professors Program
- Priority Academic Program Development (PAPD) ofJiangsu Higher Education Institutions
- Australian Government Department of Industry, Innovation, and Science through the Australia-China Science and Research Fund [ACSRF48154]
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With the increasing demand of uniform particles in the fields of medicine etc., the research on monodisperse droplet spray dryer (MDSD) becomes important. The drying efficiency of the current MDSD facility has to be improved to realize industrial applications. In this work, the influence of several kinds of nozzle movement on the drying process has been thoroughly explored by silico experiments. It is found that the velocity of the nozzle movement plays a key role in drying efficiency improvement. The movement of the nozzle leads to a wider distribution of the final moisture content of particles, and this effect becomes less significant with the increase of the velocity of nozzle motion. For all motion types under investigation, the circular motion is superior to the other motion types. It is revealed that the change of droplet dispersion state due to nozzle motion is the main factor that improves drying performance. (C) 2019 Elsevier B.V. All rights reserved.
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