将石油磺酸盐产品中未磺化油转变为石油羧酸盐的研究

Converting from Unsulphonated Oil in Petroleum Sulfonate Products to Petroleum Carboxylate

黄宏度 秦少华 吴一慧 陈思雅 郑为 张群 何归 陈勇

HUANG Hongdu，QIN Shaohua，WU Yihui，CHEN Siya，ZHENGWei，ZHANG Qun，HE Gui，CHEN Yong

将石油磺酸盐产品中未磺化油分离后进行氧化、皂化反应，表面活性剂产率提高25%以上，得到的石油羧酸盐与石油磺酸盐产品进行复配，在Na2CO3含量6数12 g/L 及复配表面活性剂含量1数3 g/L 的范围内，复配体系与大庆原油间可以形成超低界面张力。考虑到石油磺酸盐产品在分离未磺化油后活性会下降，又进行了将含有未磺化油的石油磺酸盐产品直接氧化的研究，得到石油羧酸盐和石油磺酸盐的混合产物，活性物含量提高8%以上，未反应油含量降低10%左右，氧化后界面活性得到保持或略有改善。用氧化后的产物配成的三元复合体系具有很好的界面活性长期稳定性，在6 个月的贮存测试期间均保持了初始时10-4mN/m 数量级的超低界面张力。图1 表6 参14

Unsulphonated oil，separated from petroleum sulfonate products，was oxidized and saponified，as a result，the petroleum carboxylate was obtained and the productivity of surfactants was increased by more than 25%. The compounds of petroleum sulfonate with petroleum carboxylate could produce ultra-low interfacial tension with Daqing crude at the range of Na2CO3 6—12 g/L and surfactant 1—3 g/L. Considering the fact that the activity of petroleum sulfonate products decreased after unsulphonated oil being separated，the sample containing unsulphonated oil was oxidized and saponified directly and the mixed products of petroleum carboxylate and petroleum sulfonate were obtained，resulting in the productivity of surfactants was increased by more than 8% and the unreacted oil content decreased by 10%. The interface activity remained or slightly improved. The alkaline/surfactant/polymer combined systems using the above oxidation product as surfactant had good long-term stability of interfacial activity and could keep the initial ultra-low interfacial tension of 10-4 mN/m of orders of magnitude during the store-test period（six months）