石油化工高等学校学报

石油化工高等学校学报 ›› 2021, Vol. 34 ›› Issue (1): 72-79.DOI: 10.3969/j.issn.1006-396X.2021.01.012

• 油气储运 • 上一篇    下一篇

气浮选对含油污水沉降分离流场特性的影响

张菁1庞艳萍1黎志敏1王志华2   

  1. 1. 中国石油化工股份有限公司西北油田分公司 石油工程技术研究院,新疆 乌鲁木齐 830011; 2. 东北石油大学 提高油气采收率教育部重点实验室/黑龙江省石油石化多相介质处理及污染防治重点实验室,黑龙江 大庆 163318
  • 收稿日期:2020-03-16 修回日期:2020-04-16 出版日期:2021-02-26 发布日期:2021-04-02
  • 通讯作者: 王志华(1981-),男,博士,教授,博士生导师,从事油气集输工艺理论与技术及采出液处理方面的研究;E-mail:zhihua_wang@126.com。
  • 作者简介:张菁(1977-),女,硕士,工程师,从事油气集输工艺技术研究;E-mail:zj7707@vip.qq.com。
  • 基金资助:
    黑龙江省博士后科学基金(LBH?Z16037);中国石油科技创新基金(2019D?5007?0501)。

Effect of Dissolved⁃Air Flotation on Flow Field Characteristics of Produced Water in Settlement Separation Process

Zhang Jing1Pang Yanping1Li Zhimin1Wang Zhihua2   

  1. 1. Research Institute of Petroleum Engineering & Technology,Northwest Oilfield Company, Sinopec,Urumqi Xinjiang 830011,China; 2. Key Laboratory for Enhanced Oil & Gas Recovery of the Ministry of Education/ Heilongjiang Key Laboratory of Petroleum and Petrochemical Multiphase Treatment and Pollution Prevention,Northeast Petroleum University,Daqing Heilongjiang 163318,China
  • Received:2020-03-16 Revised:2020-04-16 Published:2021-02-26 Online:2021-04-02

摘要: 以溶气气浮沉降工艺为对象,基于多相流混合模型数值模拟描述了含油污水气浮选沉降分离过程中的压力场分布、粒子运动迹线特征及除油、除悬浮物效果,并与普通重力沉降分离特性进行对比,揭示了气浮选对含油污水沉降分离流场特性的影响。结果表明,溶气气浮沉降能够适应处理量变化而获得更为稳定的压力场分布,能够避免涡流而取得相对稳定有序且在流场空间分布均匀的油珠、悬浮物粒子运动轨迹,模拟条件下的除油率和悬浮物去除率较普通重力沉降分离时提高8%~11%,有效改善了含油污水沉降分离效果,为气浮选工艺适配性构建及含油污水提效处理提供了依据。

关键词: 溶气气浮, 沉降分离, 压力场, 粒子迹线, 采出污水, 数值模拟

Abstract: Based on the dissolved⁃air flotation process, a multiphase flow mixture model numerical simulation was established to simulate the pressure field distribution, particles trace characteristics and the removal effect of oil and suspended matter in the process of settlement separation of produced water by air flotation, the influence of air flotation on the characteristics of the settlement separation flow field of produced water is revealed by comparing with the characteristics of conventional gravity settlement separation. The results indicate that the more stable pressure field distribution is obtained by the sedimentation with dissolved⁃air flotation through adapting the change of treatment amount, and relatively stable and orderly motion tracks of oil droplets and suspended particles with uniform distribution in the flow field are obtained by avoiding vortexing. The removal rates of oil and suspended solids under simulated conditions are increased by 8%~11% compared with the conventional gravity sedimentation separation, and the improvement of the settlement separation effect of produced water was effectively ensured. The construction of the adaptability of air flotation process and the basis of improving the efficiency of produced water treatment are provided by the understanding of the flow field characteristics in the settlement separation of air flotation.

Key words: Dissolved?air flotation, Settlement separation, Pressure field, Particles trace, Produced water, Numerical simulation

引用本文

张菁, 庞艳萍, 黎志敏, 王志华. 气浮选对含油污水沉降分离流场特性的影响[J]. 石油化工高等学校学报, 2021, 34(1): 72-79.

Zhang Jing, Pang Yanping, Li Zhimin, Wang Zhihua. Effect of Dissolved⁃Air Flotation on Flow Field Characteristics of Produced Water in Settlement Separation Process[J]. Journal of Petrochemical Universities, 2021, 34(1): 72-79.

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