Rotary drum compound fertilizer drying
Thread Content
The first drying of rotary drum compound fertilizer adopts two-phase parallel flow. Is it better to use two-phase parallel flow or two-phase counter-current for the second drying?
What we cool is counter-current, and drying is all parallel-current.
The first drying adopts parallel flow. After it comes out, the temperature of the fertilizer is relatively high. If two-stage drying is used, countercurrent flow will cause heat to accumulate at the end of the drying, reducing cooling efficiency, which is detrimental to later storage. If parallel flow is used, heat will not accumulate and cooling efficiency will be improved.