新型旋风分离器内颗粒的运动规律

Particle Trajectories in the New Cyclone-Type Separator

分离效率是判定旋风分离器性能优劣最直接的一个参数,而分离效率的高低微观上由旋风分离器内颗粒的运动规律决定。采用离散颗粒模型研究了新型旋风分离器内颗粒的运动规律并估算了分离效率,结果发现:颗粒从入口不同区域进入该旋风分离器分离空间时有不同的运动轨迹,入口大致可划分为3个区域;被入口导流板碰撞分离的颗粒在发生二次分离时被再次捕集的可能性很大;分离效率实验值和模拟估算值变化趋势一致,但模拟估算值高于实验值。

The separation efficien determined by the particle trajectorie type separator were studied by using cy which is one of the key parameters to evaluate the performance is s in cyclone separator. The particle trajectories in the new cyclonediscrete particle model, meanwhile, the separation efficiency was estimated. It is detected that the particle entering the separate space from the different positions of inlet will move along the different trajectories. The inlet can be partitioned into three sections based on the different particle trajectories. These particles impinged and separated by the induced-flow plate is likely col- lected again during secondary separation. At last, it is observed that although the trend of the separation efficiency from the experiment is consistent with that from the simulated results, the simulated values are higher than the experimental ones.