通过探究温度和风速对大曲热风干燥特性、水分有效扩散系数Deff以及活化能Ea，以建立排潮降温期大曲的热风干燥动力学模型，并探究热风干燥与曲虫致死情况的相关性。结果表明，大曲干燥阶段主要是降速干燥阶段。干燥温度对水分有效扩散效果要明显大于干燥风速，说明干燥过程中温度对大曲脱水影响较大；大曲热风干燥活化能Ea为59.744 kJ/mol。选取8种典型干燥模型方程分别描述排潮降温期大曲的干燥曲线，Midilli模型具有更优越的拟合效果，拟合精度高，且经过热风干燥后干燥环境和大曲内部的曲虫能够完全死亡。因此，本文研究外源加热的曲药干燥工艺，在排湿的同时对曲虫进行有效的杀灭，为大曲热风干燥工艺的研究和生产控制提供理论依据。

The hot-air drying dynamics model of Daqu during the period of drainage and cooling was established in this study to explore the correlation between hot-air drying and the lethality of Daqu pest by investigating the hot-air drying characteristics, the effective diffusion coefficient (Deff) and the activation energy (Ea) of Daqu. The results demonstrated that the drying stage of Daqu was mainly the deceleration-drying stage. The effect of drying temperature on Deff was obviously greater than the drying air speed, indicating the temperature had a great influence on the dehydration of Daqu, and the Ea was 59.744 kJ/mol. In addition, eight typical drying model equations were selected to describe the drying curve of Daqu during the desiccation-cooling period. The Midilli model had superior fitting effect and high fitting accuracy, and the Daqu pests in external and internal environment would completely die after hot-air drying process. Therefore, the paper investigated the drying technology of Daqu with external heating process, and the Daqu pests were effectively exterminated. The obtained results provided a theoretical basis for research and production control of hot-air drying process of Daqu.

固态酿造关键技术研究四川省院士（专家）工作站项目（GY2014-03）；四川省科技成果转化项目（2016CC0032）