石油化工高等学校学报

石油化工高等学校学报 ›› 2013, Vol. 26 ›› Issue (1): 40-44.DOI: 10.3969/j.issn.1006396X.2013.01.010

• 化工机械 • 上一篇    下一篇

超临界CO2 微乳液与烷烃的最小混相压力研究

董朝霞1,2,3,崔波1,2,3,李翼1,2,3,林梅钦1,2,3,李明远1,2,   

  1. (1.中国石油大学提高采收率研究院,北京102249;2.温室气体封存与石油开采利用北京市重点实验室,北京102249;3.中国石油三次采油重点实验室,北京102249)
  • 收稿日期:2012-09-10 出版日期:2013-02-25 发布日期:2013-02-25
  • 作者简介:董朝霞(1974-),女,辽宁沈阳市,教授,博士。
  • 基金资助:
    国家自然科学基金资助项目(50904073);中国石
    油科技创新基金资助项目(2008D-5006-02-06)。

MMP of Supercritical Carbon Dioxide Microemulsion and Alkanes

  1. 1. Enhanced Oil Recovery Research Institute, China University of Petroleum, Beijing 102249,China; 2. Beijin Key Laboratory for Greenhouse Gas Storage and Enhanced Oil Recocovery, Beijing 102249,China;  3.Key Laboratory of Enhanced Oil Recovery, CNPC, Beijing 102249, China
  • Received:2012-09-10 Published:2013-02-25 Online:2013-02-25

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摘要： 超临界CO2微乳液是由超临界CO2、H2O、表面活性剂AOT（二（2乙基己基）磺基琥珀酸钠）和助表面活性剂C2H5OH在一定温度和压力下形成的。采用体积可变的高压可视装置研究了超临界CO2微乳液与烷烃的最小混相压力（MMP），考察了烷烃碳数、温度、水和表面活性剂摩尔分数对超临界CO2微乳液与烷烃的MMP影响。结果表明，超临界CO2微乳液能明显降低烷烃与CO2间的最小混相压力，且随烷烃分子结构中碳数增加，最小混相压力降低幅度也越大。随AOT含量增加，超临界CO2微乳液与十二烷间的最小混相压力变化不大。低水含量时，超临界CO2微乳液体系与十二烷最小混相压力在各温度下均低于十二烷/CO2的最小混相压力。超临界CO2微乳液与十二烷的最小混相压力随温度的升高而增加。

关键词: 超临界二氧化碳, 微乳液 , 最小混相压力 , 烷烃

Abstract: The scCO2 microemulsion was formed by supercritical CO2, water, surfactant AOT and cosurfactant C2H5OH under certain pressure and temperature. The minimum miscible pressure of scCO2 microemulsion and alkanes was determined by a variable volume visible cell. The influences of temperature, water content, carbon number of alkanes and the concentration of AOT on MMP of scCO2microemulsion and alkanes were also studied. The results show that the MMP of scCO2microemulsion and alkanes is obviously lower than that of scCO2and alkanes and the range of decrease of MMP is enlarged with the carbon number of alkanes increasing. With the increasing of AOT concentration, the change of the MMP of scCO2 microemulsion and dodecane is little. When the water content is low, the MMP of scCO2 microemulsion and dodecane is lower than that of scCO2 and dodecane under different temperature. The MMP of scCO2 microemulsion and dodecane increased as temperature being increased.

Key words: Supercritical CO2,    ,  Microemulsion,    ,  Minimum miscible pressure(MMP),    ,  Alkanes

引用本文

董朝霞,崔波,李翼,林梅钦,李明远. 超临界CO2 微乳液与烷烃的最小混相压力研究[J]. 石油化工高等学校学报, 2013, 26(1): 40-44.

DONG Zhaoxia,CUI Bo,LI Yi,et al. MMP of Supercritical Carbon Dioxide Microemulsion and Alkanes[J]. Journal of Petrochemical Universities, 2013, 26(1): 40-44.

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