膨化颗粒饲料的干燥模型研究

Study on drying model of expanded granule feed

膨化颗粒饲料具有利用率高、稳定性好等优点,在现代水产养殖中获得广泛使用。为了优化膨化颗粒饲料生产中的干燥工艺,研究采用台式热风干燥机,在干燥温度为70、80和90℃,干燥风速为2 m/s和3 m/s条件下测定其干燥数据曲线。对试验数据进行统计拟合,对相关理论模型进行非线性回归统计分析。结果表明,温度越高、风速越快,所需要的干燥时间越短。与Henderson模型相比较,Page模型的试验干燥曲线数据拟合结果较好。

Extruded pellet feed has the advantages of high utilization rate and good stability, and is widely used in modern aquaculture. In order to optimize the drying process in the production of extruded pellet feed, this article studies its drying characteristics. Using a desktop hot air dryer, the drying data curve was measured under the conditions of drying temperature of 70, 80 and 90℃ and drying wind speed of 2 m/sand 3 m/s. Perform statistical fitting on experimental data,and perform nonlinear regression statistical analysis on related theoretical models. The results show that: the higher the temperature, the faster the wind speed, and the shorter the drying time required. Compared with the Henderson model, the test drying curve data of the Page model has a better fitting result.