圆柱段高度对Stairmand型旋风分离器性能的影响  

The Effect of the Cyclone Cylinder Length on the Performance of Stairmand High-efficiency Cyclone

作　　者：陈启东[1] 雷英庶 张斌[1] CHEN Qi-dong;LEI Ying-shu;ZHANG Bin(School of Mechanical Engineering,Changshu Institute of Technology;School of Mechatronic Engineering,China University of Mining and Technology)

机构地区：[1]常熟理工学院机械工程学院 [2]中国矿业大学机电工程学院

出　　处：《化工机械》2019年第5期531-536,共6页Chemical Engineering & Machinery

基　　金：国家自然科学基金项目(51705037)

摘　　要：利用雷诺应力模型(RSM)和离散相模型(DPM)对不同高度圆柱段的4种Stairmand型旋风分离器模型(A1、A2、A3、A4)进行了流场、压降和分离效率的计算分析。结果表明:增加圆柱段高度,压降显著降低,收集效率略有提高;在入口速度为18m/s条件下,与模型A1相比模型A2、A3、A4的压降分别降低了约8. 35%、18. 63%、35. 33%,分离效率分别提高了约4. 9%、2. 6%、4. 1%;同时表明了旋风分离器以其设计入口速度稳定运行的重要性。Through making use of Reynolds stress model( RSM) and discrete-phase model( DPM),the flow field,pressure drop and the separation efficiency of four Stairmand cyclone separator’s models( A1,A2,A3,A4) were calculated for different cylinder lengths. The results show that,the pressure drop of the cylinder section is significantly reduced and the collection efficiency slightly improved while increasing the cylinder section’s length;under the condition that inlet velocity stays at 18 m/s,the pressure drop of the model A2,A3 and A4 is reduced by about 8. 35%,18. 63%,35. 33% respectively as compared to the model A1,and their separation efficiency can be increased by about 4. 9%,2. 6% and 4. 1%,respectively. Meanwhile,it also shows the importance of the cyclone separator operating stably at the designed inlet velocity.

关 键 词：旋风分离器 圆柱段高度 压降 分离效率 雷诺应力模型 离散相模型 

分 类 号：TQ051.8[化学工程]