叶片式气液分离器结构优化  

Structure optimization of vane type gas-liquid separator

作　　者：王延康 刘姝 孙治谦[1] 王振波[1] WANG Yankang;LIU Shu;SUN Zhiqian;WANG Zhenbo(College of New Energy,China University of Petroleum(East China),Qingdao 266580,China;Shantui Construction Machinery Co.,Ltd.,Jining 272073,China)

机构地区：[1]中国石油大学(华东)新能源学院,山东青岛266580 [2]山推工程机械股份有限公司,山东济宁272073

出　　处：《流体机械》2024年第7期33-41,共9页Fluid Machinery

基　　金：山东省自然科学基金项目(ZR2020MB137)。

摘　　要：为了研究结构参数对叶片式气液分离器分离性能的影响,采用Realizable k-ε湍流模型和DPM模型,对叶片结构参数进行优化,对叶片式分离器内的气液两相流动进行模拟研究,得到了分离器内速度分布、压力分布以及结构参数对分离效率和压降的影响规律,并通过气液分离试验验证了模拟的可靠性。结果表明:对于本文设计的DN450型叶片式气液分离器,叶片弯曲角度为100°时可有效分离粒径为40μm及以上的液滴,继续增大该参数并无明显效果,且对压降无明显影响;叶片数目为12、叶片倾角为5°、叶片分布锥角为9°时,分离器的分离效率最高且压降最低,处理气量为150 m3/h时,压降低于50 Pa;对于30μm以上的液滴,分离效率可达到90%以上。优化后结构相比于优化前,对于30μm粒径液滴,当处理气量大于90 m^(3)/h时,分离效率可提升最高达到60%,40μm液滴分离效率提升了29%;优化前、后结构压降基本一致。研究成果可为叶片式气液分离器的进一步改进和实际工程应用提供理论依据。In order to explore the influence of structural parameters on the separation performance of the vane-type gas-liquid separator,the Realizable k-εturbulence model and DPM model were adopted to optimize the blade structural parameters,and the gas-liquid two-phase flow in the vane-type separator was simulated.The effects of velocity distribution,pressure distribution and structural parameters on separation efficiency and pressure drop were obtained.And the reliability of the simulation was verified through gas-liquid separation experiments.The results show that the DN450 vane type gas-liquid separator designed herein can effectively separate droplets of 40μm and above when the blade bending angle is 100°,and increasing the parameter has no obvious effect,and has no obvious effect on the pressure drop.When the number of blades is 12,the inclination of blades is 5°and the distribution cone angle of blades is 9°,the separation efficiency of the separator is the highest and the pressure drop is the lowest.When the treatment gas volume is 150 m3/h,the pressure is lower than 50 Pa.For droplets above 30μm,the separation efficiency can reach more than 90%.Compared with the structure before optimization,the separation efficiency of 30μm droplets can be increased by up to 60%when the treated gas volume is greater than 90 m^(3)/h;and the separation efficiency of 40μm droplets can be increased by 29%.The structural pressure drop is basically the same before and after optimization.The research results can provide theoretical basis for further improvement and practical engineering application of vane type gas-liquid separator.

关 键 词：气液分离 数值模拟 叶片 分离效率 结构优化 

分 类 号：TH138.8[机械工程—机械制造及自动化] TE642.1[石油与天然气工程—油气加工工程]