基于旋风式烘干机的油菜籽干燥工艺优化  

Optimized technology of rapeseed drying based on whirlwind dryer

作　　者：吕磊[1] 吴明亮[1,2,3] Cedric 谢伟[1] 向伟[1] 

机构地区：[1]湖南农业大学工学院,长沙410128 [2]南方粮油作物协同创新中心,长沙410128 [3]湖南省现代农业装备工程技术研究中心,长沙410128

出　　处：《食品与机械》2017年第5期109-113,共5页Food and Machinery

基　　金：湖南省科技重大专项(编号:2014FJ1006);湖南省科技厅重点项目(编号:2016NK2120);湖南省研究生科研创新项目(编号:CX2016B286)

摘　　要：为探索油菜籽单位时间失水率影响因素,研究旋风式干燥方式下油菜籽的最佳干燥工艺参数,利用自制的旋风式油菜籽烘干机进行干燥试验。选取旋风式烘干机的干燥温度、气流速度、分级器内孔直径为主要因素进行单因素和多因素旋转正交试验。单因素试验发现旋风式烘干机的干燥温度、气流速度、分级器内孔直径3因素是影响油菜籽单位时间失水率的主要因素,其取值范围为:干燥温度70~90℃,气流速度17~22 m/s、分级器内孔直径130~140mm;多因素试验表明,影响油菜籽单位时间失水率的因素显著性顺序为:干燥温度>气流速度>分级器内孔直径;旋风式干燥方式下油菜籽的最佳干燥工艺参数为干燥温度85℃、气流速度19m/s、分级器内孔直径136mm。In order to explore the influencing factors of water loss rate per unit time during rapeseed drying, the optimum drying technolog ical parameters of rapeseed under whirlwind drying were studied. The drying experiments were also carried out by using the self-made whirlwind drying machine of rapeseed. The singleand multi factors rotating orthogonal tests were undertaken by choosing lhe main fac- tors including drying temperature, air velocity and the diameter of the inner diameter of the whirlwind dryer. The single factor test showed that the drying temperature, the air velocity and the diameter of the inner hole of the whirlwind dryer were the three main factors that affected the water loss rate per unit time of the rapeseed：The drying temperature is 70~ 90 ℃, the air flow rate is 17 22 m/s, and the diameter of the inner hole of the classifier is 130-- 140 mm. The multi factor test on the other hand showed that the sig- nificant factors affecting the water loss rate per unit time of the rape seed were in the order of Drying temperature, airflow speedand clas- sifier inner hole diameter. It was also found that the optimum drying technological parameter of rapeseed in whirlwind mode drying at 85℃, with airflow velocity 19 m/s and grading hole diameter 136 mm. The research provided a theoretical basis for the drying process optimization of the rape whirlwind dryer.

关 键 词：油菜籽 烘干机 旋风 分级器 

分 类 号：TS224.2[轻工技术与工程—粮食、油脂及植物蛋白工程]