化工进展 ›› 2022, Vol. 41 ›› Issue (6): 3127-3137.DOI: 10.16085/j.issn.1000-6613.2021-2301

• 材料科学与技术 • 上一篇    下一篇

磁性纳米颗粒-微波辐射对稠油O/W乳状液的协同破乳

孙娜娜1,2(), 孙会娜1, 沈莉莎1, 苏瑞宇1, 赵超3   

  1. 1.西安石油大学石油工程学院,陕西 西安 710065
    2.西安石油大学陕西省油气田特种增产技术重点实验室,陕西 西安 710065
    3.国家管网集团西南管道有限责任公司天水输油气分公司,甘肃 天水 741000
  • 收稿日期:2021-11-09 修回日期:2022-01-24 出版日期:2022-06-10 发布日期:2022-06-21
  • 通讯作者: 孙娜娜
  • 作者简介:孙娜娜(1987—),女,博士,副教授,研究生导师,主要从事稠油乳化降黏输送。E-mail:bingyuxuan6666@126.com
  • 基金资助:
    陕西省自然科学基础研究计划(2018JQ5206);国家自然科学基金(51904246);西安石油大学研究生创新与实践能力培养计划(YCS20213148)

Synergistic demulsification of magnetic nanoparticle-microwave on heavy oil O/W emulsion

SUN Nana1,2(), SUN Huina1, SHEN Lisha1, SU Ruiyu1, ZHAO Chao3   

  1. 1.College of Petroleum Engineering, Xi’an Shiyou University, Xi’an 710065, Shaanxi, China
    2.Shaanxi Key Laboratory of Advanced Stimulation Technology for Oil & Gas Reservoirs, Xi’an Shiyou University, Xi’an 710065, Shaanxi, China
    3.Tianshui Oil and Gas Transportation Branch of State Pipe Network Group Southwest Pipeline Co. , Ltd. , Tianshui 741000, Gansu, China
  • Received:2021-11-09 Revised:2022-01-24 Online:2022-06-10 Published:2022-06-21
  • Contact: SUN Nana

摘要:

首先分析了微波辐射功率和辐射时间对磁性纳米粒子协同破乳的影响规律,在此基础上,利用生物显微镜、接触角测量仪、zeta电位分析仪等分别测量了微波作用前后油滴的分布以及磁性纳米粒子的润湿性和带电性,从而揭示了微波和磁性纳米粒子的协同破乳机理。实验结果表明:磁性纳米粒子作用下,微波辐射参数过高或者过低都会对磁性纳米粒子破乳产生抑制作用,只有在最优辐射参数范围内,微波才会促进磁性纳米粒子的破乳,且当纳米Ni浓度为150mg/L,微波辐射参数为400W、30s时,乳状液的分水率达到最高值102.56%,而在相同微波辐射参数下,Co3O4浓度为125mg/L,乳状液的分水率达到最大值106.06%。该工作为磁性纳米颗粒-微波辐射协同破乳技术的发展提供试验和理论依据。

关键词: 微波, 磁性纳米粒子, 微观形貌, 润湿性, zeta电位

Abstract:

In this work, the effects of microwave radiation power and radiation time on the synergistic demulsification of magnetic nanoparticles were analyzed. The oil droplet distributions with/without microwave radiation, the wettability and electrification of magnetic nanoparticles were measured by biomicroscopes, contact angle analyzers and zeta potential analyzers to reveal the mechanism of synergistic demulsification of microwave-magnetic nanoparticle. The experimental results showed that too high or too low microwave radiation parameters can inhibit the demulsification of magnetic nanoparticles. Only within the range of optimal radiation parameters, microwave can promote the demulsification of magnetic nanoparticles. By use of 150mg/L Ni, the water separation of 400W and 30s can reach the maximum value of 102.56%, while 125mg/L Co3O4 at 400W and 30s can reach 106.06%. This work provided experimental and theoretical basis for the development of magnetic nanoparticles-microwave radiation synergistic demulsification technology.

Key words: microwave, magnetic nanoparticles, microstructure, wettability, zeta potential

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