中海绥中减压馏分油制备石油磺酸盐的实验研究

以中海绥中36-1减二线馏分的糠醛抽出油为原料,经磺化反应合成了石油磺酸盐(NPS-2),考察了合成反应的工艺条件,并对产物结构、性能进行了分析与表征。最佳石油磺酸盐合成工艺条件为:反应温度30～40℃,稀释剂与原油质量比为1.30,三氧化硫与芳烃物质的量比为1.20,反应停留时间5.17s,老化温度为30℃。在此条件下制得的产物收率高,表面活性强。精制后石油磺酸盐产物的临界胶束浓度为0.06%,在该浓度下表面张力为30.5mN/m,适合用作三次采油用驱油表面活性剂。

PREPARATION OF PETROLEUM SULFONATE USING SUIZHONG NAPHTHENIC BASE VGO AS FEEDSTOCK

A petroleum sulfonate(NPS-2) was synthesized by Suizhong low solidification point naphthene-base VGO in a film sulfonation reactor.The optimum conditions were found as follows: reaction temperature 30-40℃,a ratio of SO3 to aromatics compounds(in feeds) of 1.20,ratio of diluter to the feedstock of 1.30,reaction residence time 5.17 s and aging temperature of 30 ℃.Under the above conditions,the product yield was high and the surface activity was strong.The critical micelle concentration(CMC) of refined NPS-2 was 0.06% and the interfacial tension reached 30.5 mN/m,meeting the requirement of oil displacement agent.