Abstract: The spray drying process of pneumatic atomization was simulated using the method of computational fluid dynamics and gas-solid two-phase theory. Contours of hot air velocity and temperature as well as tracks, residence time and size distribution of particles in the spray dryer were presented and analyzed. The results show that the products with high quality and efficiently can be produced if the temperature of hot air and drying time are changed and prolonged properly.

Keywords: spray drying; unsteady; computational fluid dynamics; numerical simulation

中图分类号：TQ021         文献标志码：A

文章编号：1008-5548（2014）05-0015-04

DOI:10.13732/j.issn.1008-5548.2014.05.004

收稿日期：2013-11-08， 修回日期：2013-12-10，在线出版时间：2014-10-11。

第一作者简介：马川川（1988—），男，硕士研究生，研究方向为干燥过程数值模拟。 E-mail：machuan_626@163.com。

通信作者简介：张丽丽（1981—），女，博士，副教授，研究方向为化工过程数值模拟。 E-mail：wzslj45@tom.com。