磁性纳米颗粒-微波辐射对稠油O/W乳状液的协同破乳

doi:10.16085/j.issn.1000-6613.2021-2301

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

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.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.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/Abstract

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

中图分类号:

孙娜娜, 孙会娜, 沈莉莎, 苏瑞宇, 赵超. 磁性纳米颗粒-微波辐射对稠油O/W乳状液的协同破乳[J]. 化工进展, 2022, 41(6): 3127-3137.

SUN Nana, SUN Huina, SHEN Lisha, SU Ruiyu, ZHAO Chao. Synergistic demulsification of magnetic nanoparticle-microwave on heavy oil O/W emulsion[J]. Chemical Industry and Engineering Progress, 2022, 41(6): 3127-3137.

图/表 14

图1 不同辐射功率对磁性纳米粒子破乳的影响

图2 辐射功率对稠油O/W型乳状液的影响

图3 不同辐射功率下乳状液的温度

图4 不同辐射功率下Co3O4的zeta电位

图5 不同辐射功率下Co3O4的接触角

图6 不同辐射时间对磁性纳米粒子破乳的影响

图7 辐射时间对稠油O/W型乳状液的影响

图8 辐射时间对乳状液温度的影响

图9 静止24h后分出水与上层油相的微观图

图10 不同辐射时间下纳米Co3O4的zeta电位

图11 不同辐射时间下Co3O4的接触角

图12 有/无微波作用下磁性纳米子浓度对破乳效果的影响

图13 不同浓度磁性纳米粒子对稠油O/W型乳状液的影响

图14 最优辐射参数下不同浓度磁性纳米粒子对稠油O/W型乳状液的影响

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磁性纳米颗粒-微波辐射对稠油O/W乳状液的协同破乳

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

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