米粉滚筒干燥工艺的优化

在单因素试验的基础上,确定以滚筒蒸汽压力、滚筒转速和料膜厚度为3个主要因素,以成膜率、色泽和水分含量为响应值,采用响应面法设计优化滚筒干燥工艺参数。结果表明:米粉滚筒干燥工艺最优参数为:滚筒蒸汽压力0.45 MPa、滚筒转速3.5 r·min-1、料膜厚度0.2 mm。验证结果与理论值接近,说明所得工艺参数准确可靠,可用于实际生产操作。

Optimization of Roller Drying Process for Rice Powder

On the basis of the single factor test, three main factors were determined: the roller steam pressure, roller rotation speed and material film thickness of the drum, and the film rate, color and moisture content were taken as the response values. Response surface methodology was used to design and optimize the process parameters of roller drying. The results show that the optimum roller drying parameters of rice powder: roller steam pressure 0.45 MPa, roller rotation speed 3.5 r·min-1, and material film thickness 0.2 mm. The results are close to the theoretical values. The results show that the obtained process parameters are accurate and reliable and can be used in actual production operations.