Analysis of temperature field of grain and drying medium for grain drying integrated mechanical device.

Shuqiang Xu,Zijian Cao,Yi Cui,Heng Wang,Shukun Cao

doi:10.1051/matecconf/201817502024

Abstract

In order to improve the working efficiency of the drying tower and the hot blast stove in the process of grain drying, this paper proposes a method to solve the problems of air pollution and energy waste caused by excessive combustion or insufficient combustion of the hot blast stove. Based on finite element analysis, this paper uses ANSYS software to simulate the drying process of grain. This paper briefly introduces the grain drying device model and working mechanism, analyzes the temperature field of the drying device, and studies the influence on the drying effect of the working parameters (hot water, hot air, hot air hot blast stove combustion temperature) during the grain drying process. The results show that the hot air temperature is 85°C, the hot water temperature is 90°C, the combustion chamber temperature is 480°C, the grain drying effect is good, the combustion efficiency of the combustion furnace is the best, and the energy utilization rate is the highest.

Highlights

The process of grain drying is the process of separating the free water and grain in the grain through a drying medium [1]
The operational factors affecting the performance of the drying device include the temperature of the drying medium and the temperature of the combustion chamber in the hot water hot blast stove
Hot water hot air stove produces hot water hot air, which is sent to the drying tower through fan and water pump to dry food

Summary

Drying device integration model and working mechanism

Hot water hot air stove uses biomass particles as fuel for combustion [5]. Hot water hot air stove produces hot water hot air, which is sent to the drying tower through fan and water pump to dry food. The grain is lifted with the hoist to the top of the drying tower. Under the action of gravity, the hot water in the drying section of the drying tower is used to transfer the moisture inside the grain to the grain surface, and the hot water in the drying section is used to evaporate the moisture on the grain surface. Drying the grain [6]. 3. Drying device integrated model modeling, parameter setting and test parameter setting

Drying Device Integrated Modeling

The simulation parameters

Simulation mathematical model

Conclusion