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采用等动力取样法和改进的 BS 1型皮托管测定了加料条件下环管干燥器的流体力学性能 .试验条件 :送气量 2 0 0～ 2 75m3/ h,加料量 0～ 3 kg/ h.试验表明 :在送气量一定时 ,物料的加入导致气体的循环比下降 ,环管的总压降也随之减少 ;颗粒的循环比基本上不受送气量和加料量的影响 ;随加料量的增加 ,固气质量比显著增加 ,但基本不随送气量变化 .通过试验观察到在气固混合室内颗粒存在粘壁现象 ,认为喷嘴的结构是主要的影响因素
The hydrodynamic performance of the loop drier under the condition of feeding was measured by the dynamic sampling method and the modified BS 1 type pitot tube.The test conditions were as follows: the feed rate was 200 ~ 2 75m3 / h and the feed rate was 0 ~ 3 kg / h. The results show that when the feed rate is constant, the recycle ratio of gas decreases, and the total pressure drop of the loop decreases. The recycle ratio of pellets is basically unaffected by feed rate and feed rate. With the feed rate Increase, the solid-gas mass ratio increases significantly, but basically does not change with the amount of gas sent through the experiment was observed in the gas-solid mixing chamber particle sticking phenomenon that the structure of the nozzle is the main influencing factors