1. Applicability - The drying equipment must first be suitable for specific materials and meet the basic requirements of material drying, including feeding, conveying, fluidization, dispersion, heat transfer, discharge, etc. , and can meet the basic requirements of processing capacity, dehydration capacity, product quality and so on.
2. High drying rate - only in terms of drying rate, the material is highly dispersed in the hot air during convection drying, the critical moisture content is low, and the drying speed is fast, and both are convection drying, and the drying method is different. The critical moisture content is also different, so drying The rates are also different.
3. Low energy consumption - Different drying methods have different energy consumption indicators. Generally, the thermal efficiency of conduction drying can theoretically reach 100%, and convection drying can only be about 70%.
4. Saving investment - drying equipment that completes the same function, sometimes the cost is very different, and the lower one should be selected.
5. Low operating costs - equipment depreciation, energy consumption, labor costs, maintenance costs, spare parts costs... and other operating costs should be as low as possible.
6. The drying equipment with simple structure, sufficient supply of spare parts, high reliability and long service life is preferred.
7. Meet the requirements of environmental protection, good working conditions and high safety.
8. Before the selection, it is best to do the drying experiment of the material, and have a deep understanding of the drying equipment (advantages and disadvantages) that have been used for similar materials, which is often helpful for proper selection.
9. Do not rely entirely on past experience, focus on absorbing new technologies, and listen to experts' opinions.
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