摘要：结合新型静态分离器的结构特点,利用Fluent软件中湍流模型、离散相模型、随机轨道模型,对EM型磨煤机分离器内部空气流场、固体颗粒的运行轨迹和分级效果进行数值模拟。结果表明:分离器入口处压力分布均匀,气流经过分离叶片时速度增大,压力减小;煤粉的分离主要由重力分级和离心分级组成;分离器对粒径为50~150μm细粉具有很好的分级效果,分离器综合分离比率高达58.3%。

关键词：新型静态分离器；数值模拟；分离比率

Abstract：Combined with the characteristics of new static separators,based on turbulence models, discrete phase model and random orbit model of Flunet software, the numerical simulation of the internal air flow field, the trajectory of solid particles and the effect of graded were simulated. Through study of the performance of the separator, the results show that the pressure distribution is uniform at the inlet of separator, when air flow through the separator, the velocity of airflow increased and the pressure declined. The separation of pulverized coal is mainly composed of gravity classification and centrifugal classification.The separator has a very good classification effect on particle size for 50 to 150 μm of fine powder, and the comprehensive separation ratio of the separator is as high as 58.3%.

Keywords: new static separator；numerical simulation；separation ratio