轴流式旋流油水分离器分离性能影响研究

摘要

轴流式旋流油水分离器具有结构紧凑和性能稳定等优点.为了得到各参数对其分离性能影响的规律,利用数值试验方法对影响其性能的因素进行了较为系统的分析研究.研究结果表明:长径比在9左右,出水口切向开设较优,油相密度在950 kg/m3以内、油相平均粒径大于0.10 mm时,分离器分离性能较优,而出水筒大小对分离器分离性能影响不大.切向开设的出水口既能节省径向空间,又能够降低油水分离后的水中含油体积分数,在设计井下油水分离器时,出水管与外筒相切开设,相切的方向与螺旋流动的旋向一致.上述各参数对分离性能影响的大小排列为:油相粒径＞油相密度＞长径比＞出水口开设方式＞出水筒直径大小.研究结果可为油水分离器的设计及应用提供指导.%Axial-flow hydrocyclone oil-water separator has the advantages of compact structure and stable performance.To understand the influence of each parameter on its separation performance,a systematic study on the parameters is conducted using numerical test method.The results show that the optimal structure is a length-diameter ratio of about 9 and a tangential opening of the water outlet.The oil phase density of less than 950 kg/m3 and the oil phase average particle size of over 0.10 mm will lead to a better separation performance.The dimension of the water removal cartridge has little effect on separation performance.The effect of the above parameters on the separation performance is ranked as follows:oil phase particle size＞oil phase density＞length-diameter ratio＞water outlet opening pattern＞water removal cartridge diameter.The results of the study can provide guidance for the design of the separator.