Multiscale modeling for surface composition of spray-dried two-component powders

被引：21
作者：
Xiao, Jie [1 ]
Chen, Xiao Dong [1 ,2 ]
机构：
[1] Soochow Univ, Coll Chem Chem Engn & Mat Sci, Sch Chem & Environm Engn, Suzhou 215123, Jiangsu, Peoples R China
[2] Xiamen Univ, Coll Chem & Chem Engn, Dept Chem & Biochem Engn, Xiamen 361005, Peoples R China
来源：
AICHE JOURNAL | 2014年 / 60卷 / 07期
关键词：
surface composition; spray drying; multiscale modeling; surface formation mechanisms; molecular packing; PROTEIN/LACTOSE/SOYBEAN OIL-EMULSIONS; PARTICLE STRUCTURE; DRYING KINETICS; MILK POWDER; DROPLET; STICKINESS; DRYER; MECHANISMS; MORPHOLOGY; FOODS;
D O I：
10.1002/aic.14452
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Spray drying is a primary process for manufacturing various powder products. One of the most important properties of powders is the ability to get wet. Surface chemical composition critically influences this property. Furthermore, surface composition also influences the efficiency of production as it affects the stickiness of the powder. This work is an attempt to analyze the surface compositions of spray-dried two-component powders produced under various conditions using an innovative multiscale modeling approach. A molecular-level geometrical interpretation is seamlessly coupled with a continuum diffusion model. The predictions are compared with the measurements done on the protein-lactose system using X-ray photoelectron spectroscopy. Sample calculations for the system have demonstrated that the new approach helps reveal surface formation mechanisms much better than that explained with the monoscale continuum approach. This work provides a good basis for a fruitful area of study toward surface composition-focused powder quality control that will have a positive impact in industries. (c) 2014 American Institute of Chemical Engineers
引用
收藏
页码：2416 / 2427
页数：12
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