重力强化式固液旋流分离器性能研究  

Study on the Performance of Gravity Strengthened Solid-Liquid Cyclone Separator

作　　者：张晶华 郑国兴 李巍巍 彭永刚 ZHANG Jinghua;ZHENG Guoxing;LI Weiwei;PENG Yonggang(Drilling Fluid Company,Daqing Drlling Engineering Company,Daqing,Heilongjiang 163453,China;Research Institute of Oil Production Technology,Daqing Oilfield Co.,Ltd.,PetroChina,Daqing,Heilongjiang 163453,China)

机构地区：[1]大庆钻探工程公司钻井液公司,黑龙江大庆163453 [2]中国石油大庆油田有限责任公司采油工艺研究院,黑龙江大庆163453

出　　处：《石油工业技术监督》2024年第12期27-33,共7页Technology Supervision in Petroleum Industry

摘　　要：为了进一步提高固液分离水力旋流器的分离性能,提出了一种重力沉降和旋流技术相结合的重力强化式固液旋流分离器结构。通过计算流体动力和单因素试验相结合的方法,针对固液旋流器不同的操作参数及物性参数,开展不同工况下的内部流场特性及分离性能研究。结果表明:当入口流量为6 m^(3)/h、含砂量为2%、分流比为30%及砂相粒径为500μm时,固液分离效率达到最佳为99.1%;分流比和入口流量两操作参数对于分离性能的影响较大,研究范围内分别改变了12.9%和7.3%,但两者的增加均造成了分离性能的提升;研究范围内砂相粒径和含砂浓度造成分离性能仅为1.3%和2.1%,但其变化过程中对水力旋流器内部流场及介质流动轨迹均产生了影响。数值模拟结果明确了含砂工况下固液旋流器的分离性能,为固液分离器的应用提供理论支撑。In order to further improve the separation performance of the solid-liquid separation hydrocyclone,a gravity reinforced solid-liquid cyclone structure was proposed by combining the gravity sedimentation and cyclone technology.Through the combination of calculating hydrodynamic and single factor test,the internal flow field characteristics and separation performance of different working conditions were studied according to the different operation parameters and physical parameters of solid-liquid hydrocyclone.The results show that when the inlet flow is 6 m3/h,the sand content is 2%,the split ratio is 30%and the sand particle size is 500μm,the solid-liquid separation efficiency reaches the best value of 99.1%.The two operating parameters of shunt ratio and inlet flow rate have great influence on the separation performance,which change by 12.9%and 7.3%respectively in the study range,but the increase of both results in the improvement of the separation performance.Within the study range,the sand particle size and sand concentration result in the separation performance of only 1.3%and 2.1%,but their changes have an impact on the flow field inside the hydrocyclone and the flow trajectory of the medium.The results of numerical simulation confirm the separation performance of solidliquid cyclone under sand bearing condition,and provide theoretical support for the application of solid-liquid separator.

关 键 词：固液分离 旋流分离 数值模拟 重力沉降 多相流 

分 类 号：TE93[石油与天然气工程—石油机械设备]