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当前位置: 首页 > 文章 > 开孔支管旋转导向管喷动床干燥油菜籽试验 农业工程学报 2009,25 (5) 228-233
Position: Home > Articles > Experiment of drying rapeseed by spouted bed with a porous branch rotating draft tube Transactions of the Chinese Society of Agricultural Engineering 2009,25 (5) 228-233

开孔支管旋转导向管喷动床干燥油菜籽试验

作  者：
刘伟民;刘军;张鹏程;赵杰文
单  位：
江苏大学食品与生物工程学院
关键词：
干燥;回归模型;设计;开孔支管旋转导向管;喷动床;油菜籽
摘  要：
为了改善旋转导向管喷动床环隙区的干燥性能,提出了附带支管的旋转导向管喷动床的新设计方案,采用油菜籽为原料,研究此新型喷动床的干燥性能。分别以单位质量水的热耗值、油菜籽的最高温度和干燥过程中油菜籽在喷动床柱体中的平均温度为试验指标,对支管式旋转导向管喷动床按L16(45)正交试验设计方法进行了风温、风量、导喷距及支管孔开放率4因素4水平的正交试验,得到以单位质量水热耗值为指标的最优干燥工艺为:风温130.0℃、标态风量为58.0m3/h、导喷距75.0mm、开孔支管的孔开放率67%,最优工艺下单位质量水分热耗值为2736.8kJ/kg,比不带支管的旋转导向管喷动床的最优值3941.4kJ/kg低,说明支管的引入能够降低干燥热耗,可考虑用于放大柱锥形喷动床。
译  名：
Experiment of drying rapeseed by spouted bed with a porous branch rotating draft tube
作  者：
Liu Weimin,Liu Jun,Zhang Pengcheng,Zhao Jiewen(School of Food and Biological Engineering,Jiangsu University,Zhenjiang 212013,China)
关键词：
drying,regression model,design,porous branch rotating draft tube,spouted bed,rapeseed
摘  要：
For improving drying performance of annulus region in rotating draft tube spouted bed(RDTSB),a novel porous branch rotating draft tube spouted bed(PBRDTSB)was designed and tested with rapeseed.Taking heat consumption per kilogram water,the maximum temperature and average temperature of rapeseed in the drying process as criteria respectively,a scheme of orthogonal experiment with four factors and four levels was given and tested.For heat consumption per kilogram water,the optimum technological parameters were 130.0℃of hot air temperature,58.0 m 3 /h of normal air flow rate,75.0 mm of distance between draft tube and spouted jet and 67.0%of opened pore percentage.The optimum heat consumption per kilogram water was 2736.8 kJ,less than the RDTSB's 3941.4 kJ.The results show that the introduction of the porous branch can reduce heat consumption of drying,and it should be considered for scaling up conventional spouted bed.

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