文献类型：期刊文献

英文题名：Impact of bubble coalescence on separation performance of a degassing hydrocyclone

作者：Xu, Xiao[1];Yang, Qiang[2];Wang, Chaoyang[1];Wang, Hualin[2]

机构：[1]E China Univ Sci & Technol, Minist Educ, Key Lab Pressure Syst & Safety, Shanghai 200237, Peoples R China;[2]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2015

卷号：152

起止页码：80

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20153401182636);WOS:【SCI-EXPANDED(收录号:WOS:000361582800011)】；

基金：The authors wish to express their sincere gratitude to the China National Funds for Distinguished Young Scientist (51208200), Fundamental Research Funds for the Central Universities (222201313001) for its financial support, Shanghai Youth Chenguang Program of Science and Technology (13CG26).

语种：英文

外文关键词：Degassing hydrocyclone; Bubble coalescence; Multiple size group model; Separation efficiency

摘要：The physical separation of liquid gas flows is an integral part of many industrial processes. A hydrocyclone is an important item of separation equipment and is widely used in many processes for liquid gas separation. In this study, the multiple size group model was firstly used to study the separation performance with bubble coalescence and break-up in a degassing hydrocyclone. The separation efficiency for 30-mu m bubbles increases from 29.67% to 99.53% when the bubble diameter changes from 30 mu m to 100 pm. The gas concentration changes more quickly at the center of the hydrocyclone, while the range of bubble sizes that coalesced increases. The break-up and coalescence of larger bubbles lead to a pressure increase in specific domains that also contributes to the liquid flow. Transient analysis allows us to determine the relationship between the flow pattern and time. The maximum bubble diameter is one of the most important factors affecting bubble separation in a hydrocyclone and is essential to the analysis and design of a degassing hydrocyclone. (C) 2015 ElseVier B.V. All rights reserved.