聚醚改性苯基含氢硅油PMPS的破乳机理

发布时间：2018-04-04 09:55

本文选题：破乳剂　切入点：表面张力　出处：《精细石油化工》2017年01期

【摘要】：针对陈庄稠油的特性,研究了聚醚改性苯基含氢硅油(PMPS)的破乳机理。通过表面张力法、荧光分析法及凝胶渗透色谱法,测定了产物的表面活性及相对分子质量,研究了破乳剂存在下乳状液体系黏度以及油水界面张力、界面膜寿命的变化情况。实验结果表明,使用表面张力法和荧光分析法测得的破乳剂PMPS的临界胶束质量浓度CMC一致,为0.4g/L,与其他表面活性剂相比,具有较好的表面活性;采用凝胶渗透色谱仪测试,破乳剂PMPS为高分子破乳剂,其相对分子质量超过1 000,预期具有较好的破乳效果;破乳剂PMPS的加入能显著降低体系黏度、油水界面张力、界面膜寿命和界面强度,表现出良好的破乳效果;PMPS的破乳机理是顶替置换机理。
[Abstract]:Based on the properties of Chenzhuang heavy oil, the demulsification mechanism of polyether modified phenyl hydrosilicon oil (PMPS) was studied.The surface activity and relative molecular weight of the product were determined by surface tension method, fluorescence analysis and gel permeation chromatography. The viscosity of emulsion system, the interfacial tension of oil and water, and the life of interfacial membrane were studied in the presence of demulsifier.The experimental results show that the critical micelle mass concentration (CMC) of demulsifier PMPS measured by surface tension method and fluorescence analysis method is 0.4g / L, which is better than that of other surfactants.The demulsifier PMPS is a polymer demulsifier with relative molecular weight over 1 000, which is expected to have a good demulsifying effect. The addition of demulsifier PMPS can significantly reduce the viscosity of the system, the interfacial tension between oil and water, the life of the interfacial film and the interfacial strength.The demulsification mechanism of PMPS is replacement replacement mechanism.
【作者单位】：陕西能源职业技术学院化学工程系;陕西科技大学教育部轻化工助剂化学与技术重点实验室;
【基金】：陕西省科技统筹创新工程计划项目(2014KTCL01-11)
【分类号】：TE39

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