燃气催化式红外干燥稻谷的平均干燥速率对爆腰率的影响

采用自制的燃气催化式红外干燥实验装置研究稻米的红外干燥特性。本研究在单因素实验的基础上,采用响应曲面设计的试验方法研究了稻米的红外干燥工艺参数(初始含水率、辐射距离、干燥温度、处理量)对稻谷平均干燥速率及其爆腰率的影响规律。用SAS 9.1软件对试验数据进行处理并建立数学模型,并运用SPSS21.0分析软件对所得数据进行分析,获得平均干燥速率与爆腰率之间的相关性。结果表明：催化式红外干燥工艺参数对稻谷平均干燥速率的影响程度依次为：干燥温度、辐射距离、处理量、物料初始含水率。催化式红外干燥工艺参数对稻谷爆腰率的影响程度依次为：辐射距离、干燥温度、初始含水率、处理量。稻谷平均干燥速率与爆腰率之间存在正相关关系,平均干燥速率越快,水分从内部向外部的迁移速度越快,导致爆腰率增加。

Effects of the drying rate of rice on the crack ratio by catalytic infrared drying technologies

It is research that rice infrared drying properties using purpose-built catalytic infrared drying experimental equipment. Based on single-factor experiments, response surface methodology was adopted to investigate that infrared drying parameters (initial moisture content of rice, radiation distance, drying temperature and material weight) effect on the drying rate of rice and the crack ratio. SAS 9.1 software was used to process the test data and establish a mathematical model. SPSS21.0 software was used to analyze the data, and the correlation between average drying rate and crack ratio. The results showed that the influence degree of catalytic infrared drying process parameters on the average drying rate of rice was as follows: drying temperature, radiation distance, material weight, initial moisture content of rice. The influence degree of catalytic infrared drying process parameters on rice crack ratio is: radiation distance, drying temperature, initial moisture content of rice, material weight. There is a positive correlation between the average drying rate and the crack ratio. The average drying rate increases with the increase of the crack ratio