油菜籽流化床干燥器内置竖直隔板结构优化设计  

Structural design optimization of built-in vertical clapboard for rapeseed fluidized bed dryer

作　　者：王聪 张健平[1] 王勇[1] 何旺 陈航宇 WAXG Cong;ZHANG Jian-ping;WANG Yong;HE Wang;CHEN Hang-yu(Key Laboratory of Testing Technology for Manufacturing Process of Ministry of Education,Southwest University of Science and Technology,Mianyang,Sichuan 621010,China)

机构地区：[1]西南科技大学制造过程测试技术教育部重点实验室,四川绵阳621010

出　　处：《食品与机械》2019年第3期82-88,共7页Food and Machinery

基　　金：国家自然科学基金(编号:51308480);教育部在线教育研究基金(编号:2016YB163);西南科技大学博士研究基金项目(编号:17ZX7125)

摘　　要：为优化油菜籽流化床内置竖直隔板的结构参数,在标准k-ε的湍流模型基础上,根据欧拉(Euler)双流体模型,应用Fluent分析软件,对竖直隔板的分割区域数和排列方式进行优化设计。结果表明:不均匀3份隔板是油菜籽流化床干燥的最佳内置竖直隔板,其隔板区域中的流速加快,热空气聚集减少,降低了流动死区的区域,从而改善了油菜籽的流态化特性,提高了油菜籽流化床干燥速率。This study focused on the optimization of the structure of built-in vertical clapboard in the rapeseed fluidized bed dryer.Based on standard k-εturbulence model and Euler two-fluid model,the number of region and the arrangement mode of clapboard was optimized through numerical simulation calculating software of Fluent.The results showed that the inhomogeneous three region clapboard was the best built-in vertical clapboard for rapeseed fluidized bed drying,enhancing the circulation of hot air,and reducing hot air accumulation in local areas.Finally,it realized the normal fluidization of gas-particle two-phase flow,and achieved the goal of uniform distribution of rapeseed particles in fluidized bed,without the groove flow and dead zone.

关 键 词：油菜籽 流化床干燥器 内置竖直隔板 结构优化 干燥效率 

分 类 号：TS223.2[轻工技术与工程—粮食、油脂及植物蛋白工程]