化工学报2017，Vol.68Issue(5)：1921-1931,11.DOI:10.11949/j.issn.0438-1157.20161478
水力旋流器溢流管结构对微细颗粒分离的影响
Influence of vortex finder configurations on separation of fine particles
摘要
Abstract
The separation efficiencies were compared under different vortex finder lengths, thickness and flow rates in a small hydrocyclone with the diameter of 50 mm, and the optimal insertion depth, wall thickness of the vortex finder and flow rate were obtained by using the method of orthogonal design. In addition, the influence of vortex finders with tube-in-tube structure in the hydrocyclone on the separation efficiency was investigated. Finally, the relationship between the split ratio and separation efficiency was analyzed on the basis of the optimal structure for the vortex finder. The experimental results show that the cylindrical part of the hydrocyclone plays an important preliminary separation role. For the separation of fine particles, a thin vortex finder which is extended to the junction between the cylindrical and the conical parts is beneficial to the separation efficiency. The results show that the optimum proportion of the vortex finder insertion depth to the hydrocyclone diameter in the small hydrocyclone is bigger than those in the big ones, and it is indicated that there is a remarkable difference of separation between them.关键词
分离/粒度分布/流动/水力旋流器/溢流管/分离效率/粒级分离效率Key words
separation/particle size distribution/flow/hydrocyclone/vortex finder/separation efficiency/grade separation efficiency分类
化学化工引用本文复制引用
刘鸿雁,王亚,韩天龙,黄青山..水力旋流器溢流管结构对微细颗粒分离的影响[J].化工学报,2017,68(5):1921-1931,11.基金项目
国家重点研发计划项目(2016YFB0301701) （2016YFB0301701）
国家自然科学基金项目(91434114 , 21376254) （91434114 , 21376254）
中国科学院科研装备研制项目(YZ201641) supported by the National Key Research and Development Program of China (2016YFB0301701), the National Natural Science Foundation of China (91434114, 21376254) and the Instrument Developing Project ofthe Chinese Academy of Sciences(YZ201641). （YZ201641）
