药丸微波对流干燥特性的实验研究

微波对流干燥方法是一种新型的干燥方法，具有干燥速度快、杀菌等一系列优点。本对微波对流联合干燥过程进行实验研究，表明药丸大小、质量、风速、风温、微波输入功率对干燥速率、物料的温度变化都有显的影响。证明了微波干燥既受内热源的影响，同时又受外界环境和湿份传递路径的影响。显示了微波干燥在节能、杀菌方面具有显的优点，其高效干燥方法适合于制药行业。

INVESTIGATION ON DRYING CHARACTERISTIC OF MEDICAL PILL USING MICROWAVE-CONVECTIVE DRYING

The combined microwave-convective drying is a novel drying method and has many advantages, such as swift drying, equable drying and sterilization. This paper studies the drying characteristic of medical pill in microwave-convective drying process. The influential parameters of pill drying characteristics including pill size, quality, air velocity, temperature and the input power of microwave, are experimentally investigated. Results show that the drying process is influenced by the intrinsic heat of microwave power, and the environment and the resistance of mass transfer. It has the advantage of the microwave-convective drying in saving energy, reducing labor intensity and sterilizing. The method with the high efficiency is suitable for pharmacy industry.