稻谷真空干燥中工艺参数对降水幅度的影响  

Effects of processing parameters on reduction of moisture content in paddy vacuum drying

作　　者：徐泽敏[1] 殷涌光[1] 吴文福[1] 尹丽妍[1] 

机构地区：[1]吉林大学生物与农业工程学院

出　　处：《吉林大学学报（工学版）》2008年第2期493-496,共4页Journal of Jilin University:Engineering and Technology Edition

基　　金：“863”国家高技术研究发展计划项目(2006AA10Z256)

摘　　要：采用二次正交旋转组合设计方案,建立以降水幅度为目标函数的数学模型,为确定稻谷低温真空干燥工艺、稻谷低温真空干燥工业化生产及真空干燥机的设计提供参考和依据。研究表明,干燥时间、真空度和干燥温度是影响稻谷真空干燥降水幅度的3个重要因素,对干燥过程的影响的次序为干燥温度、干燥时间、真空度,且均与降水幅度呈正相关。在真空度为0.06 MPa、干燥温度为40℃的条件下,可取得与45℃热风干燥相近的效果。A mathematical model for the paddy vacuum drying was built using the quadratic rotary experiment design to help develop the paddy low temperature vacuum drying technology and the vacuum drier,promote the industrialized production of this kind of paddy. The research results show that the drying temperature, the drying time duration, and the vacuum level are in their significance order from the first to the third three key factors affecting the reduction of the moisture content of the paddy during its vacuum drying. All of three factors are positively related to the reduction of the paddy moisture content. Under the conditions of vacuum level 0. 06 MPa and drying temperature 40℃, a drying effect equivalent to 45 ℃ hot air drying can be attained.

关 键 词：农业工程 稻谷 真空干燥 二次旋转组合 降水幅度 

分 类 号：S226.6[农业科学—农业机械化工程]