三次采油用石油磺酸钠的组成和结构分析

Analysis on Composition and Structure of Sodium Petroleum Sulfonate for EOR

以大庆糠醛抽出油为原料,发烟硫酸为磺化剂,合成了石油磺酸钠。将石油磺酸钠分离提纯后,经电喷雾(API-ES)质谱分析获得了石油磺酸钠的平均相对分子质量和相对分子质量分布,用核磁共振方法得到了烷链支化度和芳香度,经计算得出石油磺酸钠的平均碳数、平均芳碳数、平均饱和碳数以及烷链甲基的平均个数。这些结构参数直观地表征了石油磺酸钠中烷基芳烃的平均结构模型。本研究使用的分析方法速度快,直观,试剂用量少。

Sodium petroleum sulfonate (SPS) was synthesized with furfural extracted oil as raw material and oleum as sulfonated agent. The purified SPS was analyzed with API - ES mass spectrum (MS) to get the average equivalent molecular weight and equivalent molecular weight distribution and with 'HNMR and CNMR to acquire the branchiness index and aromaticity. The carbon number, average aromatic carbon number, average saturated carbon number and the average number of methyl were figured out. These structure parameters characterized the average structure model of alkyl of SPS.