颗粒碰撞团聚对旋风分离器分离性能影响研究  

Study of influence of particle impaction and agglomeration on the separation performance of cyclone separator

作　　者：侯广信[1] 陈建义[1] 

机构地区：[1]中国石油大学(华东)机电工程学院

出　　处：《石油机械》2008年第5期1-4,49,共5页China Petroleum Machinery

基　　金：国家973计划项目"适用于双气头多联产系统的煤大规模气化的工程基础研究"(2005CB221201);教育部新世纪优秀人才支持计划项目(NCET-04-0108)

摘　　要：采用自行设计的旋风分离器试验装置,通过循环加料的方法验证了旋风分离器内颗粒碰撞与团聚现象的存在,研究了入口含尘质量浓度、入口气速、操作温度等操作条件改变而导致的颗粒碰撞与团聚现象的变化对旋风分离器分离性能的影响规律。研究发现,颗粒团聚有利于细颗粒的分离;旋风分离器气固分离主要由离心力和颗粒团聚双重因素控制,对粗颗粒主要考虑离心力作用分离,对细颗粒主要考虑团聚作用分离。在研究分析基础上建立了包含离心力作用和颗粒碰撞与团聚作用的新的气固分离模型。The phenomenon of particle impaction and agglomeration in cyclone separator is confirmed with the method of cyclic feeding by using the self-designed cyclone separator, and the influence rule of particle impaction and agglomeration change on the separation performance of cyclone separator due to the change of inlet dust concentration, inlet velocity and temperature is studied. The results show that particle agglomeration can increase the separation efficiency of fine particle. The separation mechanism in a cyclone is mainly controlled by the centrifugal force (for coarse particles) and by the particle impaction and agglomeration (for fine particles). A new separation model for cyclone performance which takes into account the influences of both centrifugal forces and particle impaction and agglomeration is also established.

关 键 词：颗粒碰撞 团聚 旋风分离器 分离性能 

分 类 号：TQ621.12[化学工程—精细化工] TK229.66[动力工程及工程热物理—动力机械及工程]