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一、前言干燥过程具有重要的国民经济意义,在工农业各个部门获得广泛应用,几乎在生产每一件产品时,干燥作业都是最重要的工艺环节之一。随着科学技术的不断发展,工业生产的规模日趋大型化,产品越来越多,随之需要加热干燥的产品也越来越多,据有关资料报道,英国用于加热干燥的耗能量占英国全国总耗能量的2—3％,为该国铁路运输耗能量的两倍;苏联用于干燥物枓的耗能量更大,在全国热量总平
I. Preface The drying process has important national economic significance and is widely used in various sectors of industry and agriculture. In almost every production of products, the drying operation is one of the most important process steps. With the continuous development of science and technology, the scale of industrial production is increasingly large-scale, more and more products, followed by more and more products need to be heated and dried, according to the information reported that the United Kingdom for heating and drying of energy consumption accounted for the United Kingdom 2-3% of the total energy consumption in the country is twice the energy consumption of rail transport in the country; the Soviet Union consumes more energy for the dry matter,