表面活性剂DPS的性能优化研究

发布时间：2018-12-19 15:28

【摘要】：为了明确各种助剂对石油磺酸盐界面活性的影响进而优化表面活性剂性能,通过对表面活性剂DPS分离提纯,在提取物石油磺酸盐添加不同类型、不同浓度的无机盐、碱、醇,测定各混合溶液与原油的界面张力,研究了影响石油磺酸盐表面活性剂界面活性的三个主要因素,给出了表面活性剂DPS的优化配方GDPS,并与原表面活性剂DPS进行了对比。研究结果表明,不同类型的碱、无机盐和醇在一定浓度下可以分别使石油磺酸盐溶液与原油间的界面张力达到10-3、10-2和10-1m N/m数量级。优化后表面活性剂GDPS中的最佳助剂为碳酸钠、氯化钠、正辛醇,加量分别为0.8%、8%和0.2%。与原表面活性剂DPS相比,优化后表面活性剂GDPS溶液与原油间的界面张力值降低了一个数量级,达到最低界面张力的最小质量分数降低了20%。
[Abstract]:In order to clarify the influence of various auxiliaries on the interfacial activity of petroleum sulfonates and optimize the properties of surfactants, the surfactants were separated and purified by DPS, and different types of inorganic salts, alkaloids and alcohols were added to the extracts of petroleum sulfonates. The interfacial tension between the mixed solution and crude oil was measured. Three main factors affecting the interfacial activity of petroleum sulfonate surfactant were studied. The optimized formula of surfactant DPS GDPS, was given and compared with that of the original surfactant DPS. The results show that the interfacial tension between petroleum sulfonate solution and crude oil can reach 10 ~ (-3) N / m and 10 ~ (-1) N / m respectively with different types of alkali, inorganic salt and alcohol at a certain concentration. The optimum additives in the optimized surfactant GDPS are sodium carbonate, sodium chloride and n-octanol, with the addition amounts of 0.8% and 0.2%, respectively. Compared with the original surfactant DPS, the interfacial tension of the optimized surfactant GDPS solution and crude oil is reduced by one order of magnitude, and the minimum mass fraction of the lowest interfacial tension is reduced by 20%.
【作者单位】：中国石油大学(北京)提高采收率研究院;中国石油大港油田公司采油工艺研究院;中国石油大庆油田有限责任公司第一采油厂;
【基金】：国家自然科学基金“三元复合驱微观剩余油赋存状态及形成机理”(项目编号51374221)
【分类号】：TE357.46

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