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Na^+质量浓度对三元复合体系的影响 被引量:3

Influence of Sodium Ion Mass Concentration on ASP System
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摘要 阳离子对三元复合体系(表面活性剂+聚合物+NaOH,alkaline/surfactant/polymer,简称ASP)的性能影响较大。在纯水配制的三元复合体系中,利用NaOH和NaCl的质量分数来调节其中Na+的质量浓度,考察三元复合体系中Na+质量浓度对体系黏度及其与原油之间油-水界面张力的影响。结果表明,三元复合体系中Na+质量浓度达到较高值时,三元复合体系黏度就不再变化。在三元复合体系中,无论是NaOH质量分数高而NaCl质量分数低,还是NaCl质量分数高而NaOH质量分数低,只要体系中Na+质量浓度在5200~7700mg/L,就能与原油形成超低油-水界面张力,这是三元复合体系Na+质量浓度的变化导致表面活性剂分子在油-水界面上的吸附发生变化的结果。 Cations had great effects on the properties of alkali-surfactant-polymer (ASP) system. The ASP systems were prepared by the deionized water, and the Na^+mass concentration of the ASP system was adjusted by changing the mass fractions of NaOH and NaCl. The effects of Na^+ mass concentration on the viscosity of ASP and the oil-water interracial tension between crude oil and ASP were investigated. The results showed that when the mass concentration of Na^+ reached a much higher value, the viscosity of the ASP system would not change any more. Whether there was high mass fraction of NaOH and low mass fraction of NaC1 or high mass fraction of NaC1 and low mass fraction of NaOH, as long as the mass concentration of Na^+ was in the range of 5200 mg/L to 7700 mg/L, the ultra-low oil-water interracial tension (〈10^-3 mN/m) between crude oil and ASP the crude oil could be obtained, because the change of Na+ mass concentration may lead to the change of the surfactant adsorption at the oil-water interface.
作者 李国桥
出处 《石油学报(石油加工)》 EI CAS CSCD 北大核心 2012年第5期840-843,共4页 Acta Petrolei Sinica(Petroleum Processing Section)
基金 国家重点基础研究发展规划"973"项目(2005CB221305)资助
关键词 三元复合体系 界面张力 离子浓度 黏度 钠离子(Na+) alkali-surfactant-polymer ( ASP ) system interfacial tension ion concentration viscosity sodium ion(Na^+)
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