Preparation of surfactant of double long-chain alkyl lycine and applications thereof

一种双长链烷基甜菜碱表面活性剂的制备及其应用

Abstract

The invention relates to preparation of a surfactant of double long chain alkyl lycine and applications thereof, belonging to the field of colloid and interface chemistry. The surfactant is prepared by reaction of double long-chain alkyl methyl tertiary amine and chloroactic acid and is an ampholytic surfactant t and the number of carbon atoms of the long-chain alkyl is 8 to 18. By being used by combination with other surface active agents, the surfactant is used as an alkali-free oil-displacing agent; wherein the molar fraction of the surface active agent of double-long chain alkyl lycine is0.10 to 0.60, and can reduce the interfacial tension of Daqing crude oil/formation water interface to 10<-3>mN/m order of magnitude under the conditions that the total mass concentration of the active surface agent is 0.01 percent to 0.5 percent, 1000ppm of polyacrylamide is added, alkali is not added and the temperature is 45 DEG C.
一种双长链烷基甜菜碱表面活性剂的制备及其应用,属于胶体与界面化学领域。本发明双长链烷基甜菜碱表面活性剂由双长链烷基甲基叔胺与氯乙酸反应制得,是一种两性表面活性剂,长链烷基的碳原子数为8~18。通过将其与其它表面活性剂复配使用,用作无碱驱油剂,其中双长链烷基甜菜碱表面活性剂的摩尔分数为0.10~0.60,在总表面活性剂质量浓度0.01%~0.5%,加入聚丙烯酰胺1000ppm,不加碱、45℃条件下,能使大庆原油/地层水界面张力降至10-3mN/m数量级。

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Cited By (1)

    Publication numberPublication dateAssigneeTitle
    CN-104449634-AMarch 25, 2015江南大学一种含酰胺型双链甜菜碱的无碱复合驱油剂