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现代化工  2018, Vol. 38 Issue (11): 211-215    DOI: 10.16606/j.cnki.issn0253-4320.2018.11.046
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重力式油水分离器内聚结构件分离性能的实验与模拟研究
梁龙1, 张旺宁2, 白志山1, 杨晓勇1, 罗会清1, 张斌1
1. 华东理工大学机械与动力工程学院, 上海 200237;
2. 长庆油田分公司工程技术管理部, 陕西 西安 710021
Experimental and simulation study on separation performance of coalescing structural parts within oil-water gravity separator
LIANG Long1, ZHANG Wang-ning2, BAI Zhi-shan1, YANG Xiao-yong1, LUO Hui-qing1, ZHANG Bin1
1. School of Mechanical and Power Engineering, East China University of Science and Technology, Shanghai 200237, China;
2. PetroChina Changqing Oilfield Company, Xi'an 710021, China
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摘要 为考察聚结构件对重力式油水分离器分离性能的影响,在理论分析的基础上,对错搭波纹板进行实验与模拟研究,并从油滴粒径在波纹板前后的变化、分离器分离效率、波纹板内流场和油滴浓度分布等方面进行对比研究。实验结果表明,板高较小时,水相出口处大油滴所占份额较低,油水分离效率较好,但会增加波纹板填料堵塞的风险;在波纹板上开孔能有效提高油水分离效果,缩短油滴停留时间;进口流量越大,分离效果越差。采用RNG k-ε湍流模型与离散相模型对错搭波纹板进行数值模拟研究,结果表明,小孔可促进板内流场分布均匀,并为板间质量交换提供通道,使聚结之后的大油滴通过小孔浮升到上层波纹板,缩短油滴浮升距离;开孔波纹板后油滴浓度分布区域集中,具有较好的分离效果。
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梁龙
张旺宁
白志山
杨晓勇
罗会清
张斌
关键词:  油滴粒径  波纹板  分离效率  数值模拟  油滴浓度    
Abstract: In order to investigate the effect of internal coalescing structural parts on the separation performance of oil-water gravity separator,the experiments and simulation studies are performed on mismatched corrugated plate based on theorical analysis.Comparison studies are carried out for the particle size distribution changes before and after the corrugated plate,separation efficiency,the flow field inside the corrugated plate and the distribution of oil droplet concentration.The experimental results show that with a small plate height,large oil droplets occupy a low share in the water phase at the outlet and there is a good separation efficiency between oil and water,but it will increase the risk of blockage of corrugated plate packing.Opening holes on corrugated plates can effectively improve the separation effect between oil and water and shorten the residence time of oil droplets.The greater the inlet flow,the worse the separation effect.The RNG k-ε model and the discrete phase model are used to perform numerical simulation on mismatched corrugated plate.The simulation results show that smaller hole can promote the uniformity of the flow field in the plate and provide the channel for the mass exchange between the plates,so that the large oil droplets after coalescence can be floated through small holes to the upper ripple plate to shorten the floating lift distance of oil droplets.The concentration distribution of oil droplets is concentrated after opening corrugated plates,meaning better separation effect.
Key words:  diameter of oil droplet    corrugated plate    separation efficiency    numerical simulation    oil droplet concentration
收稿日期:  2018-04-12      修回日期:  2018-09-03          
TE992.2  
基金资助: 国家重点基础研究发展计划项目(2014CB748500);国家自然科学基金项目(51578239)
通讯作者:  梁龙(1990-),男,硕士生;白志山(1979-),男,博士,教授,博士生导师,研究方向为非均相分离与传递、旋转流场的流体力学行为,通讯联系人,021-64253731,baizs@ecust.edu.cn。    E-mail:  baizs@ecust.edu.cn
引用本文:    
梁龙, 张旺宁, 白志山, 杨晓勇, 罗会清, 张斌. 重力式油水分离器内聚结构件分离性能的实验与模拟研究[J]. 现代化工, 2018, 38(11): 211-215.
LIANG Long, ZHANG Wang-ning, BAI Zhi-shan, YANG Xiao-yong, LUO Hui-qing, ZHANG Bin. Experimental and simulation study on separation performance of coalescing structural parts within oil-water gravity separator. Modern Chemical Industry, 2018, 38(11): 211-215.
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http://www.xdhg.com.cn/CN/10.16606/j.cnki.issn0253-4320.2018.11.046  或          http://www.xdhg.com.cn/CN/Y2018/V38/I11/211
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