摘要
为研究不同聚结破碎模型对油水分离水力旋流器内油滴粒径分布特性的影响,以双锥式水力旋流器为研究对象,采用计算流体动力学方法加载群体平衡模型,开展12种不同聚结破碎模型组合方案的数值模拟研究。通过开展室内分离性能及粒度分析实验对不同方案模拟结果进行筛选及验证。结果表明:luo聚结与luo破碎组合模拟得出的旋流器底流口油滴粒径体积分数最高在320μm处,占比为45%,与实验结果最接近,说明采用luo-luo组合模型模拟旋流器内油滴的聚结破碎特性较准确。旋流器内油滴粒径值由轴心到边壁呈环形对称的减小趋势,而湍动能变化呈环形对称的增大趋势;不同操作参数条件下luo-luo组合方案的质量效率模拟结果与实验值呈现出较好的一致性,均随入口处理量与溢流分流比的增大先升高后降低,且在处理量为5.23 m^(3)/h,分流比为30%时,质量效率达到最大值94.6%。
The computational fluid dynamics method loading population balance model was carried out to study effect of different coalescence and breakage models on oil droplet size distribution in double cone oil-water separation hydrocyclone.The numerical simulation of 12 different combination schemes of coalescence and breakage models were compared.The simulation results of different schemes were screened and verified by separation performance and particle size analysis experiments.The results show that the oil droplet volume fraction of 320μm in the hydrocyclone with luo coalescence and luo breakage model schemes is 45%,which is closesd to the experimental result,which indicates that the luo-luo combination model schemes is more accurate in simulating the coalescence and breakage characteristics of oil droplets in the hydrocyclone.The oil droplet diameter decreases symmetrically from the axis to the inner wall,while the internal turbulent kinetic energy increases symmetrically.Through the comparison of the separation efficiency results of the hydrocyclone obtained by simulation and experiment,the simulated value of the quality efficiency of the luo-luo combination scheme is in good agreement with the experimental data under the condition of different operation parameters,which increases at first and then decreases with the increase of the inlet flow rate and overflow split ratio,and when the inlet flow rate is 5.23 m^(3)/h and the split ratio is 30%,the separation efficiency of hydrocyclone reaches the maximum value 94.6%.
作者
邢雷
高金明
蒋明虎
李枫
李金煜
韩国鑫
XING Lei;GAO Jin-ming;JIANG Ming-hu;LI Feng;LI Jin-yu;HAN Guo-xin(School of Mechanical Science and Engineering,Northeast Petroleum University,Daqing 163318,Heilongjiang Province,China;Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and Pollution Prevention,Daqing 163318,Heilongjiang Province,China)
出处
《化学工程》
CAS
CSCD
北大核心
2021年第6期46-51,共6页
Chemical Engineering(China)
基金
国家863计划项目(2012AA061303)
大庆市指导性科技计划项目(zd-2019-19)。
关键词
聚结破碎
水力旋流器
群体平衡模型
油滴粒径
分离性能
coalescence and breakage
hydrocyclone
population balance model
oil droplet diameter
separation performance
