In the practice of corn starch processing, the choice of tube bundle dryer depends on the particle size of the material to be dried, the mass of the material, the void ratio, the surface area of ​​the material, the heat dissipation performance of the material, the moisture of the feed, and the coverage of the material in the tube bundle dryer. After the parameters such as the density of the material ascending, the drying area of ​​the tube bundle dryer is selected by referring to the drying strength of each type of tube bundle dryer and the unit water evaporation amount, and the type of the tube bundle dryer is determined.
The drying characteristics of germ, egg *** and fiber are similar, some are different, their drying strength is different, and the dry area selected is different. For example, the germ granule is large, the volume quality is medium, the material surface area is small, the material heat dissipation is not good, the volume quality is large, the void ratio is small, the coverage in the machine is small, the density after lifting is large, and the drying strength is large. The fiber particles are flat, the volume is small, the surface area of ​​the material is large, the heat dissipation performance of the material is good, the volume quality is small, the void ratio is large, the coverage in the machine is large, the density after lifting is small, and the drying strength is large. At the same time, we must fully consider the structure, performance, quality of the tube bundle dryer, the complexity of the system such as the induced draft, returning materials, etc.
According to the theoretical calculation and comprehensive factors, the area used for drying the germ to dry the germ at a capacity of 10,000 t/year and 55 m2 for the tube bundle dryer for the drying of the egg *** for 10,000 t/year 45m2 selects the area of ​​the tube bundle dryer, for the dry fiber, the area of ​​the tube bundle dryer is selected by 100m2 according to the output of 10,000 t/year, and the area of ​​the tube bundle dryer is selected by adding the corn syrup to the 10,000 ton/year output with 125 m2.
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