喷雾流化床微料包衣的实验研究  

A experimental study on coating particle using fluidized bed with spraying

作　　者：王晓静[1] 孙志民[1] 田兆君[1] 钱树德[1] 

机构地区：[1]天津大学化工学院,天津300072

出　　处：《干燥技术与设备》2004年第2期37-39,48,共4页

摘　　要：在喷雾流化床实验装置上选用Φ1mm的玻璃珠作为种粒,以糊精为包衣材料进行了微粒包衣的实验研究。着重考察了流化气速、进气温度和喷雾速率等操作参数对颗粒成长的影响。实验研究证实了流化气量、喷雾速率以及气体入口温度对微粒包衣增长速率的双重作用,并确定出所选实验条件下的最优值。In this paper,a process of encapsulation of glass beads whose diameters are 1 mm with dextrin was developed in a fluidized bed with spraying.Effects of operational parameters,e.g.air flow rate,air temperature,and coating solution feed rate,on particles growth are studied especially.The results proves that the effects of airflow rate,air temperature,and coating solution feed rate on particle growth are dual.At the same time.the optimal values are found.

关 键 词：喷雾流化床 团聚 包衣 生长方式 喷雾速率 流化气量 

分 类 号：TQ051.1[化学工程]