小麦流态化干燥实验关联式及在热泵流化床谷物干燥中的应用

Wheat drying correlation and their applications in a fluidized bed dryer with heat pump

基于流化床干燥理论,采用热风循环充分的电热烘箱作为干燥器,对小麦进行了一系列的薄层干燥实验研究,模拟小麦流态化干燥过程,总结出适用于流化床小麦干燥时间预测的经验回归公式.开发了热泵流化床谷物干燥实验系统,并将小麦干燥的经验回归公式应用于此实验台的干燥实验过程.结果表明,小麦干燥经验回归式可用于预测小麦在流态化条件下的干燥时间,所开发的热泵流化床谷物干燥装置经济性合理,有市场应用前景.

Based on the fluidized bed theory, a series of thin layer wheat drying experiments were carried out in an electric drying oven with gentle breeze in it to simulate the wheat drying process in fluidized bed. As a result, the wheat drying correlation was developed from those experiment data for predicting the wheat drying time in fluidized bed. An experiment system combining fluidized bed with heat pump was designed and experiments on which indicated that the correlation could predict the drying time reasonably. Further economical analysis proved the efficiency and a promising future of the fluidized bed drying with heat pump.