轴流式旋流油水分离器分离性能影响研究
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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/m~3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.
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.
引文
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[2]提浩强.海上大流量井下油水分离系统设计及实验研究[D].北京:北京化工大学,2015.TI H Q.Design and experimental research of high volume downhole oil-water separation system for offshore oilfield[D].Beijing:Beijing University of Chemical Technology,2015.
[3]吴太平.井下油水分离的监测与控制[J].国外石油机械,1999,10(4):28-29.WU T P.Monitoring and control of underground oil-water separator[J].Foreign Petroleum Machinery,1999,10(4):28-29.
[4]王胜,刘敏,罗昌华,等.海上油田新型井下油水分离及回注工艺[J].石油科技论坛,2014,33(3):58-61.WANG S,LIU M,LUO C H,et al.New-type downhole oil-water separation and re-injection process of offshore oilfield[J].Oil Forum,2014,33(3):58-61.
[5]王丽.基于CFD的油水分离水力旋流器非尺寸因素的影响研究[D].西安:西安石油大学,2013.WANG L.Study on the non size factors’impact on oilwater separator hydrocyclone by CFD[D].Xi’an:Xi’an Shiyou University,2013.
[6]张西兆,陈建义,王峥,等.分流比对脱水型旋流器性能影响的实验研究[J].炼油技术与工程,2017,47(3):35-40,49.ZHANG X Z,CHEN J Y,WANG Z,et al.Experimental study of impact of split ratio on performances of dewatering hydrocyclone[J].Petroleum Refinery Engineering,2017,47(3):35-40,49.
[7]刘杨,王振波.水力旋流器分离效率影响因素的研究进展[J].流体机械,2016,44(2):39-42.LIU Y,WANG Z B.Research progress in the factors influence the efficiency of hydrocyclone separation[J].Fluid Machinery,2016,44(2):39-42.
[8]舒朝晖,杨拓,周宇,等.除油旋流器操作参数对分离效率影响的数值模拟[J].石油化工设备,2015,44(5):1-6.SHU Z H,YANG T,ZHOU Y,et al.Numerical simulation for the effect of operational parameters on separation efficiency in de-oiling hydrocyclones[J].Petro-Chemical Equipment,2015,44(5):1-6.
[9]罗然,张伟,王家辉,等.用CFD确定物性参数对井下油水分离效率的影响[J].石油与化工设备,2010,13(6):23-26.LUO R,ZHANG W,WANG J H,et al.Use of CFD simulation to determine physical parameters of the downhole oil-water separation efficiency[J].Petro&Chemical Equipment,2010,13(6):23-26.
[10]NOROOZI S,HASHEMABADI S H.CFD simulation of inlet design effect on deoiling hydrocyclone separation efficiency[J].Chemical Engineering&Technology,2009,32(12):1885-1893.
[11]SHI S S,WU Y S,LI H,et al.Experimental and numerical studies of flow field in a vane-type pipe separator[C]∥Proceedings of the 10thInternational Conference on Hydrodynamics.Oct.1-4,2012,St.Peterberg,Russia,2012.
[12]史仕荧,吴应湘,马乃庆,等.一种管道式导流片型油水分离器研究[M]∥吴有生,刘桦,程文,等.第二十三届全国水动力学研讨会暨第十届全国水动力学学术会议文集.北京:海洋出版社,2011:242-250.SHI S Y,WU Y X,MA N Q,et al.Study about a kind of vane-type pipe separator for oil-water separation[M]∥WU Y S,LIU H,CHENG W,et al.Proceedings of the 23th National Conference on Hydrodynamics and 10th National Congress on Hydrodynamics.Beijing:China Ocean Press,2011:242-250.
[13]章光,朱维申.参数敏感性分析与试验方案优化[J].岩土力学,1993,14(1):51-58.ZHANG G,ZHU W S.Parameter sensitivity analysis and optimizing for test programs[J].Rock and Soil Mechanics,1993,14(1):51-58.