The following are the principles of drying equipment selection, it is difficult to say which one or which ones are the most important, the ideal selection must be focused according to their own conditions, sometimes compromise is necessary.
1. Applicability – drying equipment must be suitable for specific materials, to meet the basic requirements for the use of material drying, including good handling of materials (feeding, conveying, fluidization, dispersion, heat transfer, discharge, etc.). And to meet the basic requirements of processing capacity, dehydration and product quality.
2. High drying rate – as far as drying rate is concerned, the material is highly dispersed in the hot air when convective drying, the critical moisture content is low, the drying speed is fast, also convective drying. Different drying methods have different critical moisture content and different drying rate.
3. Low energy consumption – different drying methods have different energy consumption indexes.
4. Saving investment – to complete the same function of the drying equipment, sometimes the cost difference is big, should choose the low.
5. Low running cost – equipment depreciation, energy consumption, labor cost, maintenance cost, spare parts cost and other running costs as cheap as possible.
6. Priority should be given to the drying equipment with simple structure, sufficient supply of spare parts, high reliability and long service life.
7. Meet the requirements of environmental protection, good working conditions, high security.
8. It is better to make the drying experiment of the material before selecting the type, and deeply understand the drying equipment that has been used for the similar material (advantages and disadvantages), which is often helpful for the proper selection.
9. Do not completely rely on past experience, pay attention to the absorption of new technologies, listen to the views of experts.
