实验原油为胜利某油田高胶质(47.99%)高沥青质(9.13%)、凝点18℃的脱水脱气特稠油,3.4s-1下30℃粘度3.6×105mPa·s,50℃粘度1.6×104mPa·s,给出了粘温曲线。稠油乳化降粘实验条件如下:油水体积比7∶3,温度50℃,水相...实验原油为胜利某油田高胶质(47.99%)高沥青质(9.13%)、凝点18℃的脱水脱气特稠油,3.4s-1下30℃粘度3.6×105mPa·s,50℃粘度1.6×104mPa·s,给出了粘温曲线。稠油乳化降粘实验条件如下:油水体积比7∶3,温度50℃,水相中烷基酚聚氧乙烯聚氧丙烯醇醚浓度5g/L。实验结果表明:作为稠油乳化降粘剂,该嵌段聚醚在烷基链长为C8～C18时均可使用,C8～C12时效果较好,C9的效果最好,形成的稠油乳状液粘度280mPa·s,稳定时间240min;壬基酚聚氧乙烯聚氧丙烯醇醚(EP EO PO)中EO加成数占EO+PO加成数的50%～95%时,乳状液粘度小于400mPa·s;用Davies法计算的HLB值在13～17时,使用4g/LEP EO PO形成的乳状液粘度小于300mPa·s;在水相中有2.0×104mg/LCa2++Mg2+存在时该乳化降粘剂可耐浓度≤2.0×105mg/L的NaCl;在有8.0×104NaCl和2.0×104mg/LCa2++Mg2+存在下,温度从35℃升高到80℃时,乳状液粘度和稳定时间均下降,90℃时乳状液发生反相,EP EO PO的使用温度为35～80℃。图4表3参4。展开更多
Vapor pressure and surface tension of the aqueous solution of sodium dodecyl sill-fate(SDS)/polyethylene oxide(PEO) were measured at 298.15, 308.15 and 318.15K respectively, the coucentration of PEO was 0.5%, and the ...Vapor pressure and surface tension of the aqueous solution of sodium dodecyl sill-fate(SDS)/polyethylene oxide(PEO) were measured at 298.15, 308.15 and 318.15K respectively, the coucentration of PEO was 0.5%, and the concentration of SDS (mnsds ) was up to 80 mmol.kg-1 The activity coefficient of water at different temperatures was calculated. The effcct of intermolecular interactions on the vapour pressure was discussed. From vapo pressure and surface tension data, the critical aggregate concentration (CAC) and polymer saturation point (PSP) were ob-tained.展开更多
以氢化苯基甲烷二异氰酸酯(H-MDI)、聚氧乙烯十二烷基胺(PAE)、聚乙二醇(PEG)为主要原料,合成了系列侧链含十二烷基、主链嵌入大量聚环氧乙烷(EO)结构的阳-非离子型聚氨酯表面活性剂(PUS)。通过红外光谱(FT-IR)、表面张力、临界胶束浓...以氢化苯基甲烷二异氰酸酯(H-MDI)、聚氧乙烯十二烷基胺(PAE)、聚乙二醇(PEG)为主要原料,合成了系列侧链含十二烷基、主链嵌入大量聚环氧乙烷(EO)结构的阳-非离子型聚氨酯表面活性剂(PUS)。通过红外光谱(FT-IR)、表面张力、临界胶束浓度、乳化力测试等对其进行分析。结果表明:当以PAE为软段单体,以聚乙二醇(PEG-200)为扩链剂时,合成的聚氨酯高分子表面活性剂的综合性能优异,溶液的临界胶束浓度为53.10 mg/L,水溶液的表面张力最低可达38.12 m N/m。展开更多
文摘实验原油为胜利某油田高胶质(47.99%)高沥青质(9.13%)、凝点18℃的脱水脱气特稠油,3.4s-1下30℃粘度3.6×105mPa·s,50℃粘度1.6×104mPa·s,给出了粘温曲线。稠油乳化降粘实验条件如下:油水体积比7∶3,温度50℃,水相中烷基酚聚氧乙烯聚氧丙烯醇醚浓度5g/L。实验结果表明:作为稠油乳化降粘剂,该嵌段聚醚在烷基链长为C8～C18时均可使用,C8～C12时效果较好,C9的效果最好,形成的稠油乳状液粘度280mPa·s,稳定时间240min;壬基酚聚氧乙烯聚氧丙烯醇醚(EP EO PO)中EO加成数占EO+PO加成数的50%～95%时,乳状液粘度小于400mPa·s;用Davies法计算的HLB值在13～17时,使用4g/LEP EO PO形成的乳状液粘度小于300mPa·s;在水相中有2.0×104mg/LCa2++Mg2+存在时该乳化降粘剂可耐浓度≤2.0×105mg/L的NaCl;在有8.0×104NaCl和2.0×104mg/LCa2++Mg2+存在下,温度从35℃升高到80℃时,乳状液粘度和稳定时间均下降,90℃时乳状液发生反相,EP EO PO的使用温度为35～80℃。图4表3参4。
文摘Vapor pressure and surface tension of the aqueous solution of sodium dodecyl sill-fate(SDS)/polyethylene oxide(PEO) were measured at 298.15, 308.15 and 318.15K respectively, the coucentration of PEO was 0.5%, and the concentration of SDS (mnsds ) was up to 80 mmol.kg-1 The activity coefficient of water at different temperatures was calculated. The effcct of intermolecular interactions on the vapour pressure was discussed. From vapo pressure and surface tension data, the critical aggregate concentration (CAC) and polymer saturation point (PSP) were ob-tained.
文摘以氢化苯基甲烷二异氰酸酯(H-MDI)、聚氧乙烯十二烷基胺(PAE)、聚乙二醇(PEG)为主要原料,合成了系列侧链含十二烷基、主链嵌入大量聚环氧乙烷(EO)结构的阳-非离子型聚氨酯表面活性剂(PUS)。通过红外光谱(FT-IR)、表面张力、临界胶束浓度、乳化力测试等对其进行分析。结果表明:当以PAE为软段单体,以聚乙二醇(PEG-200)为扩链剂时,合成的聚氨酯高分子表面活性剂的综合性能优异,溶液的临界胶束浓度为53.10 mg/L,水溶液的表面张力最低可达38.12 m N/m。
