粮食多场协同干燥系统设计与技术模式应用

Design and Technology Mode Application of Multi-field Synergy Drying System for Grain

以提高粮食干燥过程去水速率、改善干燥品质、减少干燥能耗为目的,基于干燥系统热能结构分析及客观能势利用,综合考虑粮食干燥过程中的多种势场,设计了一种红外热辐射、引风逆混流多场协同干燥系统。结合粮食产地区域特征及农业经营模式,采用了双干燥主塔联机的形式形成干燥装备,实现了系统节能和模式节能。试验结果表明:系统内粮食干燥过程的平均去水速率为2. 95%w. b./h,较传统的横流干燥方式提高2倍以上,粮温降低约11℃,爆腰增率低于1%。

In order to improve the rate of water removal in the process of grain drying,improve the quality of drying and reduce the energy consumption of drying,based on the heat energy structure analysis and objective potential utilization of the drying system,a multi-field synergy drying system with infrared heat radiation and air draft inverse mixed flow is designed.Combining the regional characteristics of grain producing area and the agricultural operation mode,the drying equipment is formed by using the dual drying main towers in the form of the main tower,and the system energy saving and the mode energy saving are achieved at the same time.The experimental results showed that the average water removal rate of grain drying in the system was 2.95%w.b./h,more than 2 times higher than that of the traditional cross flow drying method,the grain temperature was reduced by 11℃,and the increase rate of the crack was less than 1%.