摘要
为提高多通道式气液旋流分离器的分离效率,采用ANSYS Fluent软件中的RNG k-ε和DPM模型对其内部气液两相分布特性进行了数值模拟,研究了结构参数(通道数量、挡板高度、通道宽度分布)、液滴粒径及流动参数等对其分离性能和压降的影响,同时与试验数据进行对比,验证了数值模拟的可靠性。研究结果表明:分离器内靠近芯筒的通道几乎不进入液滴,通道2和3是分离器内主要的分离场所;在按照气流螺旋升角为15°设计的挡板高度的基础上,继续增大挡板高度对分离器的效率和压降影响较小;增大最外侧通道宽度、缩小内侧通道宽度的T6分布方式分离效率最高;通道数量增加,分离器对小粒径液滴的分离效率升高、压降减小。研究结果可为多通道式气液旋流分离器的设计和结构改进提供理论依据。
To improve the separation efficiency of the multi-channel gas-liquid cyclone separator,the RNG k-εand DPM models in ANSYS Fluent software were used to conduct numerical simulation on the gas-liquid distribution characteristics in it.The influence of structural parameters(number of channels,baffle height,channel width distribution),droplet size and flow parameters on its separation performance and pressure drop were studied.Meanwhile,the reliability of numerical simulation was verified by comparing with test data.The study results show that droplets scarcely enter the channel close to the central core pipe in the separator,and channels 2 and 3 serve as the main separation sites in the separator.On the basis of the baffle height designed at a spiral ascent angle of 15°for the airflow,further increasing the baffle height has little effect on the separators efficiency and pressure drop.The separation efficiency of T6 distribution mode that increases the width of the outermost channel and reduces the width of the inner side channel is the highest.As the number of channels increases,the separation efficiency of the separator for small sizes of droplets increases and the pressure drop decreases.The study results provide a theoretical basis for the design and structural improvement of multi-channel gas-liquid cyclone separators.
作者
刘文才
贺亚东
陶科旭
雷鹏
宋健斐
Liu Wencai;He Yadong;Tao Kexu;Lei Peng;Song Jianfei(Research Institute of Safety and Environment Technology,China National Petroleum Corporation;College of Mechanical and Transportation Engineering,China University of Petroleum(Beijing);Beijing Key Laboratory of Process Fluid Filtration and Separation)
出处
《石油机械》
北大核心
2025年第12期151-158,共8页
China Petroleum Machinery
基金
中国石油天然气集团有限公司科技项目“往复式压缩机带液故障防控技术研究与试验验证”(AYLH2023-219)。
关键词
旋流分离器
气液分离
分离效率
压力损失
DPM模型
挡板高度
数值模拟
cyclone separator
gas-liquid separation
separation efficiency
pressure loss
DPM model
baffle height
numerical simulation
