中文摘要：

针对多层带式干燥机的干燥过程建立了热、质传递的数学模型,并通过C语言编程进行干燥过程的模拟,得到热风在干燥机内温度和湿度的空间分布及其随时间的变化规律,以及物料床层内温度和含水率的分布及其随时间的变化规律。利用生产用多层带式干燥机蒜片干燥过程的试验数据对模型进行了验证,证明了模型的有效性。通过对模拟数据分析,对多层带式干燥机的结构参数（传送带长度、干燥机层数、通风道高度）和操作参数（传送带翻转时间、物料床层厚度、热风风速）进行了优化。

英文摘要：

The drying process of a muhilayer belt dryer was modeled and simulated considering both the heat and mass transfer by C language. The data of the moisture content and temperature distributions in material bed and the air humidity and temperature profiles in air channel above material bed were obtained from the results of the simulation. The drying experiment data of garlic slices in an industrial scale dryer was obtained to verify the validation of the model. Then, based on the drying kinetic data obtained from the further simulations, the proper parameters of dryer structure and operating conditions were discussed, including belt length, number of belt layer, height of air channel, belt flip time, thickness of material bed and air velocity.