湿物料的性质，节能
烘干机操作就是去除湿物料中的部分或全部水分，湿物料通常是由各种类型的干骨架(绝干料)和液体湿分所组成的。不同的湿物料具有不同的物理、化学、结构力学、生物化学等性质。虽然所有参数都会对烘干过程产生影响，但***重要的因素是湿分的类型、湿分与骨架的结合方式以及骨架的结构。湿物料的种类繁多，按它们在烘干过程中的除水特性可分为:(1)胶体物料。这类物料在烘干设备过程中有明显的尺寸变化，但保留其弹性特征。(2)毛细多孔物料。它们在烘干过程中会变脆，有轻微收缩，烘干后可碾成粉末，如沙子、木炭等物料。(3)胶体毛细多孔物料。顾名思义，它们应同时具有上述两种物料的特性，即毛细孔壁是弹性的，增湿后会膨胀，如泥煤、木材以及皮革等。(4)收湿性物料。物料孔道大多为微孔孔道，内为结合水，但水分承受的蒸汽压低于相同温度下纯水的蒸汽压。(5)半收湿性物料。主要是指那些具有较大孔道，尽管其内部还是结合水分，且承受的蒸汽压低于相同温度下的纯水蒸汽压，但仅比自由水表面的蒸汽压稍低，其湿分吸收特性介于上述两者之间。
Energy-saving dryer for several wet raw material drying The nature of the wet material, the dryer operation is to energy-saving dehumidifying part or all of the moisture of the material, wet material is usually composed of various types of dry skeleton (oven dry material) and liquid of wet branch office. The different wet materials have different physical, chemical, structural mechanics, biochemistry, etc. Although all the parameters will have an effect on drying process, but the most important factor is the type of moisture, the combination of moisture and the skeleton and the structure of the skeleton. There are many types of wet material, according to them in the drying process in addition to water features can be divided into: (1) colloid material. This kind of material in the process of drying equipment has obvious size changes, while retaining its elastic characteristics. (2) capillary porous materials. They will become fragile during drying, a slight contraction, after drying can be ground into powder, such as sand, charcoal and other materials. (3) gel capillary porous materials. As the name suggests, they should have the characteristics of these two materials at the same time, namely
