结构参数对小型旋风分离器分离性能的影响

Numerical study on separation performance of small cyclone separator with different structure parameters

采用雷诺应力模型(RSM)和离散相模型(DPM),计算不同结构尺寸下小型旋风分离器对微米级颗粒的分离性能。计算结果表明,小型旋风分离器排气管直径、排尘锥锥顶直径对除尘效率和压力降的影响显著,分离效率为50%时的临界粒径约为0.9μm。结果显示,此类小旋风分离器有望用于减少雾霾。

The effect of dimensions of the exit pipe on the flow field and performance of small cyclone separator was investigated computationally by Reynolds stress model （RSM） and discrete phase model （DPM）. The calculated results indicate that exhaust pipe diameter and dust cone cone diameter of small cyclone separator have a significant effect on the collection efficiency and the pressure drop, and 50% cut size for this small cyclone is about 0.9 μm. The results show that this type of small cyclone is expected to be used in reducing smog and haze.