我国地域广阔,粮食的收获季节从南到北有很大差别,由于南方气候潮湿,而北方气温较低,粮食收获后不能自然干燥,需要烘干。国家粮食主管部门对粮食烘干一直非常重视,近20年来投资兴建了大量的烘干设备,这些设备绝大部分为塔式烘干机,其最基本配置为:一台有换热器的燃煤热风炉、一 Because of the vast territory in our country, the harvest season of grain varies greatly from south to north. Due to the humid climate in the south and the relatively low temperature in the north, the grain can not naturally dry after harvesting and needs to be dried. National food authorities have always attached great importance to grain drying. Over the past 20 years, they have invested heavily in the construction of a large number of drying equipment, most of which are tower dryers. The most basic configuration is as follows: Coal hot stove, one