旋流微气泡气浮除油过程的数值模拟  

Numerical Simulation of Oil Removal Process by Air Flotation of Swirling Micro Bubbles

作　　者：贺彦涛 王玉环 蔺爱国[2] 李娟 HE Yantao;WANG Yuhuan;LIN Aiguo;LI Juan(College of Chemical Engineering,China University of Petroleum,Qingdao 266580,China;Academy of Science and Technology,China University of Petroleum,Dongying 257061,China)

机构地区：[1]中国石油大学(华东)化学工程学院,山东青岛266580 [2]中国石油大学(华东)科学技术研究院,山东东营257061

出　　处：《石油学报（石油加工）》2020年第2期349-356,共8页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：中国博士后科学基金面上项目(2016M92271)资助。

摘　　要：针对现有测量技术无法准确获得在旋流气浮除油过程中旋转流场变化的问题,利用FLUENT软件对自行研制的旋流微气泡气浮装置内部流场进行数值模拟。模拟油滴粒子的运动轨迹,主要分析了进口流量及微气泡对内部流场及油污去除率的影响。结果表明:在微气泡粒径30μm、进口流量550~600 L/h、分流比区间为10%~12%时,内部流场稳定,油污去除率最高可达0.911。Due to the limitations of the existing measurement technology,the change of the rotating flow field in the oil removal process of swirling air floatation can not be accurately obtained.Here,we used the commercial software FLUENT to simulate the internal flow field of the self-developed swirl micro bubble air flotation device.The trajectory of the oil droplet particles was simulated,and the effects of inlet flow and micro bubbles on internal flow field and oil removal rate were analyzed.The simulation results show that the internal flow field is stable and the best oil removal rate reaches 0.911 when the micro bubble particle size is 30μm,the inlet flow rate is 550-600 L/h and the split ratio range is 10%-12%.

关 键 词：含油废水 旋流气浮 微气泡 数值模拟 

分 类 号：X741[环境科学与工程—环境工程]