克拉玛依石油磺酸盐极性组分的复配性能

CompositionPropertiesofPolarComponentsofKaramayiPetroleumSulfonate

陈林 王雨 刘鹏飞 吴运强 任敏红 胡君

CHEN Lin WANG Yu LIU Pengfei WU Yunqiang REN Minhong HU Jun

采用液液萃取的方法将克拉玛依石油磺酸盐（KPS）分离成三个极性不同的组分，在矿化度5000mg/L（配液用水为NaCl溶液）的情况下，考察了单独组分、组分间复配的、以及与一类含氮非离子助剂NCL复配体系的界面张力行为。三种不同极性组分单独作用时，在矿化度为0 的情况下，与分离前的类似，与原油间的界面张力仅 能达到1 mN/m；在矿化度5000mg/L下，仅极性较小的组分能将油水界面张力降至10-3mN/m，另外的两组分溶液与原油间的界面张力仅能达到10-1mN/m；去掉极性较大的组分后，降低界面张力的能力明显改善；在与非离子助剂NCL的复配体系中，极性中等的组分对降低界面张力贡献最大，极性小的组分的贡献却最小。KPS 的中等极性组分在组分间复配、以及与非离子助剂的复配时占主导作用，影响总体性能。图9 参12

Three polar fractions were isolated from Karamayi petroleum sulfonates by extraction. The dynamic interfacial tensions between crude oil from karamay and a series of composition systems were studied under salinity of 5000mg/L（dissolved in NaCl solution）, including single polar fractions, combinations of polar fractions, combinations of polar fractions and a nonionic surfactant containing nit rogen named as NCL. The dynamic interfacial tensions could reach 1 mN/m when only one polar fraction was used without NaCl, which was similar with petroleum sulfonates before isolation; under salinity of 5000mg/L, the fraction with lower polarity extracted by benzene resulted in a great decrease in the dynamic interfacial tension to 10-3mN/m, the system with another two fractions deceased only to 10-1 mN/m. The composition without the faction of higher polarity had a better ability in decreasing interfacial tension. In the compositions of fractions and NCL, the fraction with middle polarity contributed the most, while, the fraction with lower polarity contributed at least. In conclusion, the fraction with middle polarity has the most important influence in the composition system.