单入口双进气道旋风分离器内流体的流动特性  

Flow Characteristic in a Single Inlet Cyclone Separator With Double Passage

作　　者：王江云[1] 毛羽[1] 王娟[1] 

机构地区：[1]中国石油大学重质油国家重点实验室,北京102249

出　　处：《石油学报（石油加工）》2011年第5期780-786,共7页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金(21106181);国家重点基础研究发展规划"973"项目(2010CB226902)资助

摘　　要：采用数值模拟和实验相结合的方法,对一种单入口双进气道旋风分离器内的紊流过程进行了研究。计算得到的旋风分离器内的压力降与实验数据较为吻合,验证了所采用的模型和计算方法的正确性。与普通单入口旋风分离器相比,相同处理量时,此种旋风分离器在不降低分离效率的情况下可以使压力降降低40%左右;通过特殊的双进气道设计,基本消除了普通单入口旋风分离器内旋转中心与几何中心不重合产生的涡核摆动现象,有利于提高旋风分离器的分离效率。在FCC沉降器内采用该旋风分离器,不仅可以大幅度降低压力降,减少能耗,而且由于在旋风分离器内形成了对称流场,有利于减少FCC沉降器顶旋升气管外壁的结焦。The turbulence flow in a single inlet cyclone separator with double passage was studied by combing numerical simulation and experiment investigation.The calculated pressure drop in the cyclone separator was consistent with the experimental data,which verified the adopted models and calculating methods.Comparing with the common single inlet cyclone at the same process load,the pressure drop of the cyclone separator could be decreased by 40% with the collection efficiency of the single inlet cyclone separator with double passage not being reduced.Moreover,special double passages could eliminate the phenomenon of the vortex core oscillation induced by the noncoincidence of the swirl flow center and the geometry center in common cyclone separator,so as to improve the collection efficiency.The cyclone separator with double passage could decrease the pressure drop and energy consumption in the FCC disengage cyclone separator system.And the axisymmetric flow fields conduced to reduce the coke generation on the outer wall of the outlet pipe in the cyclone separator.

关 键 词：旋风分离器 入口 双进气道 压降 数值模拟 

分 类 号：TE624[石油与天然气工程—油气加工工程]