【Abstract】 In view of the problems of hot air drying in corn, the self-made microwave drying test system was used to study the microwave drying characteristics and drying conditions of dried microwave power and energy consumption after using different drying power, heating time and supporting process. The influence of unit mass power consumption, temperature, average water loss rate on corn kernel germination rate, crack rate and starch yield during microwave drying of corn was analyzed, and the process parameters affecting microwave drying corn and corn microwave drying equipment were determined. The optimal process flow.
The results show that the microwave drying of corn is mainly in the constant-speed drying stage. The application of microwave technology can not only dry the corn grain quickly and economically, but also maintain its seed value and improve its quality.
Keywords: microwave drying corn drying characteristics quality
introduction
Due to the weather, the moisture content of corn is high when harvested. If it cannot be dried in time, it will cause deterioration and mildew, which will seriously affect the yield and quality of corn. The traditional hot air drying method, when the material is heated before drying, the drying effect is poor and the drying quality is poor, especially the corn kernel is large, the unit specific area is small, the grain cortex structure is tight and smooth, and the water is not easily transferred from the inside to the outside of the grain.
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