壬基酚聚氧丙烯聚氧乙烯醚磺酸盐应用性能

application properties of nonylphenol polyoxypropylene polyoxyethylene oxide sulfonates

摘要:

合成了壬基酚聚氧丙烯聚氧乙烯醚磺酸盐（NPESO-3-4），采用高效液相色谱法检测了目标产物中原料的含量，同时测定了其表面张力、乳化能力、润湿性及模拟驱油率并与壬基酚聚氧乙烯醚磺酸盐的性能（NPESO-0-4）做了比较。结果表明：与NPESO-0-4相比，NPESO-3-4水溶液降低表面张力的能力略低，但降低表面张力的效率较高。二者与胜利孤东原油之间的界面张力均在10-1 mN?m-1数量级，但NPESO-3-4能将油性表面润湿反转为中间润湿，乳化能力和模拟驱油率明显高于NPESO-0-4，说明含氧丙烯链节的阴-非离子表面活性剂在三次采油中有很好的应用价值。

Abstract:

Nonylphenol polyoxypropylene polyoxyethylene oxide sulfonates (NPESO-3-4) was synthesized and content of raw materials in product was analyzed by high-performance liquid chromatography (HPLC). Surface tension, emulsifying ability, wettability and mimic oil recovery efficiency of NPESO-3-4 were measured and also compared with Nonylphenol polyoxyethylene oxide sulfonates’ (NPESO-0-4). The results showed that for surfactants in aqueous solution, the NPESO-3-4 caused a large increase in the effectiveness of surface tension reduction, while its efficiency was slightly worse than NPESO-0-4. The interfacial tensions between NPESO-3-4 and NPESO-0-4 aqueous solution/Shengli crude oil can reach the range of 10-1 mN?m-1. NPESO-3-4 could alter wettability of the surface from oil-wet to intermediate wet, but emulsifying ability and mimic oil recovery efficiency for NPESO-3-4 was significantly higher than NPESO-0-4, which indicated the Anionic-Nonionic surfactants with polyoxypropylene group were suitable for Enhanced Oil Recovery.