关键词: 烘干设备, 红外干燥, 工艺参数, 红外联合干燥, 干燥模型, 石墨烯

Abstract: Grain drying is an important link in the postharvest grain production and is related to the issue of national food security. The farinfrared drying machine works at high speed with low energy consumption and effectively maintains the grain quality after drying. It gradually replaces the traditional hotair drying machine, becoming the new favorite of the market. This paper reviews the domestic and foreign researches of farinfrared drying technique in recent years and the current situation of the major market of the farinfrared drying machine. It also expounds the principle of the drying technique, the influence of process parameters and the advantages and disadvantages of combined drying technology. The existing problems of the machine includes firstly the hightemperature heat source with inadequate irradiation timespan, excessive instantaneous intensity, and incapability of drying heatsensitive materials, and secondly the technique of single method that leads to unsatisfied drying effect. The development direction has been put forward that the farinfrared drying equipment will lead to the machine equipped with combined drying technology and clean energy. In the end, it introduces a farinfrared drying machine that uses graphene infrared radiant panel as its new heat source, which provides ideas for developing new materials and new heat sources, and will hopefully help further researches of the farinfrared grain drying machine.

Key words: drying equipment, infrared drying, process parameters, combined infrared drying, drying model, graphene