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日用化学工业（中英文） ›› 2025, Vol. 55 ›› Issue (2): 154-161.doi: 10.3969/j.issn.2097-2806.2025.02.003

• 基础研究 • 上一篇    下一篇

油水混相泡沫排液行为的研究

许豪1,燕永利1,*(),刘辉2,贺炳成2   

  1. 1.西安石油大学 化学化工学院，陕西 西安 710065
    2.中国石油天然气股份有限公司 长庆油田分公司 采油十厂采油工艺研究所，甘肃 庆城 745100
  • 收稿日期:2024-05-23 修回日期:2025-01-22 出版日期:2025-02-22 发布日期:2025-02-28
  • 通讯作者: 燕永利
  • 基金资助:
    国家自然科学基金资助项目(22272126);国家自然科学基金资助项目(21773183);西安石油大学研究生创新与实践能力培养计划资助(YCS23214234)

Study on the drainage behavior of mixed aqueous-and-oil foam

Hao Xu1,Yongli Yan1,*(),Hui Liu2,Bingcheng He2   

  1. 1. College of Chemistry and Chemical Engineering, Xi’an Shiyou University, Xi’an, Shaanxi 710065, China
    2. The 10th Oil Production Factory, Changqing Oilfield Branch Company, PetroChina, Qingcheng, Gansu 745100, China
  • Received:2024-05-23 Revised:2025-01-22 Online:2025-02-22 Published:2025-02-28
  • Contact: Yongli Yan

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摘要：

油水混相泡沫在食品、采油、化妆品等工业领域都有着广泛的应用，但是目前对于油水混相泡沫的报道多数集中于探讨油水混相泡沫的形成和稳定性，关于其排液行为的报道并不多见。文章分别采用十二烷和煤油作为油相与水以一定比例混合后加入质量分数为0.125%的阴离子型表面活性剂十二烷基硫酸钠（SDS）制备油水混相泡沫，通过研究其发泡体积、半衰期、表观黏度、微观泡沫结构以及自由排液时电导率、排液体积、排液速率和粒径的变化，以揭示油水混相泡沫排液过程中各物理性质的变化规律及其影响机理。研究发现，各油水体积比（1∶9~5∶5）下的油水混相泡沫均具有非牛顿流体的剪切变稀性质；相比于纯水相泡沫，油水混相泡沫的泡沫综合性能较差但携液能力较强，且随着油水体积比的增加，油水混相泡沫的排液速率减小、携液能力增强；油水混相泡沫的排液行为可以分为三个阶段：重力作用主导快速排液阶段、连续相黏度主导的缓慢排液阶段和油滴阻塞作用主导的截流排液阶段。

关键词: 油水混相泡沫, 微观结构, 排液机理, 排液速率

Abstract:

Mixed aqueous-and-oil foams have been widely used in various industrial fields such as food, oil production and cosmetics. However, most reports on mixed aqueous-and-oil foams have focused on their formation and stability, and few reports on their drainage behavior. In this work, dodecane and kerosene were used as the oil phase, respectively, which were then mixed with water in a certain proportion, and finally 0.125% anionic surfactant sodium dodecyl sulfate （SDS） was added to prepare mixed aqueous-and-oil foam. The foam volume, half-life, apparent viscosity, microscopic foam structure, and the changes of conductivity, drainage volume, drainage rate and bubble size during free drainage were studied to find the rule and influence mechanism for the physical properties of mixed aqueous-and-oil foam during drainage. It was found that the mixed aqueous-and-oil foams with various oil-water volume ratios （1∶9-5∶5） exhibited shear thinning as non-Newtonian fluids. Compared with corresponding aqueous foam, the mixed aqueous-and-oil foam had poor comprehensive performance of foaming but strong liquid-carrying ability. With the increase of oil-water volume ratio, the drainage rate of mixed aqueous-and-oil foam decreased and the liquid-carrying ability increased. The drainage behavior of mixed aqueous-and-oil foam could be divided into three stages, the rapid drainage stage dominated by gravity, the slow drainage stage dominated by the viscosity of continuous phase, and the oil-droplet-blocked drainage stage.

Key words: mixed aqueous-and-oil foam, microstructure, drainage mechanism, drainage rate

中图分类号: 

  • TQ423