CAJ | 학술논문

探索了碱木质素经H2 O2预处理,再经磺化、胺化、烷基化合成驱油用表面活性剂的方法。首先考察了过氧化氢预处理条件对表面张力的影响。结果表明,当过氧化氢与碱木质素质量比为1：10,温度70℃,处理时间30 min效果较好,经该条件预处理后合成的表面活性剂质量分数为0.9%时,表面张力降至24 mN/m。进一步考察碱、表面活性剂质量分数对孤岛原油油/水界面张力的影响,并与同条件下未经预处理合成的表面活性剂的油/水界面张力对比,结果表明,碱木质素经预处理合成的表面活性剂质量分数为0.4%时,与质量分数为0.4% NaOH复配后可使最低油/水界面张力达0.07 mN/m,较未经氧化预处理组稳定时间明显延长。红外光谱( FT-IR)分析表明了碱木质素改性前后结构的变化。
탐색료감목질소경H2 O2예처리,재경광화、알화、완기화합성구유용표면활성제적방법。수선고찰료과양화경예처리조건대표면장력적영향。결과표명,당과양화경여감목질소질량비위1：10,온도70℃,처리시간30 min효과교호,경해조건예처리후합성적표면활성제질량분수위0.9%시,표면장력강지24 mN/m。진일보고찰감、표면활성제질량분수대고도원유유/수계면장력적영향,병여동조건하미경예처리합성적표면활성제적유/수계면장력대비,결과표명,감목질소경예처리합성적표면활성제질량분수위0.4%시,여질량분수위0.4% NaOH복배후가사최저유/수계면장력체0.07 mN/m,교미경양화예처리조은정시간명현연장。홍외광보( FT-IR)분석표명료감목질소개성전후결구적변화。
The method for synthesis of surfactants for enhance d oil recovery, including pretreatment with H2 O2 , sulfonation, amination and alkylation, was studied with alkali lignin as feedstock. Firstly, the effects of pretreatment conditions on surface tension were investigated. The suitable pretreatment conditions were that mass ratio of H2 O2 to alkali lignin was 1:10 at 70℃ for 30 min. Under the pretreatment conditions, the surface tension of 0. 9 % surfactant solution could be reduced to 24 mN/m. The effects of surfactant and alkali concentration on oil-water interfacial tension of Gudao crude oil were also studied. The results showed that when both the surfactant concentration and NaOH concentration was 0. 4 %, the oil-water interfacial tension was decreased to 0. 07 mN/m. It was more stable than the control surfactants synthesized without H2 O2 pretreatment. Finally, Fourier Transform Infrared ( FT-IR) analysis indicated the structural characterization of lignin before and after modification.