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甲烷+氮气/水体系高压界面张力的测定与计算 被引量:11

MEASUREMENT AND CALCULATION OF HIGH-PRESSURE INTERFACIAL TENSION OF METHANE+NITROGEN/WATER SYSTEM
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摘要 利用改装的JEFRI高压界面张力仪测定了 5组不同配比的甲烷、氮气混合物与水之间的高压界面张力 ,并分析了温度、压力以及气体混合物组成对该体系界面张力的影响。在 2 98~ 373K、1~ 30MPa的实验条件下 ,甲烷、氮气混合物与水之间的界面张力总是随压力、温度的升高以及甲烷含量的增加而降低。采用Zuo和Stenby提出的线性梯度理论对实验体系的界面张力进行了计算 ,计算值与实验值符合较好。 High pressure interfacial tensions of methane+nitrogen/water system are measured by the pendent drop method on a modified JEFRI high pressure interfacial tension apparatus under the conditions of 298~373 K and 1~30 MPa respectively. The effects of gas composition, temperature and pressure on the interfacial tension of the studied system are investigated. The interfacial tension between methane+nitrogen and water decreases when temperature, pressure and the methane content in gas mixtures increase. The linear gradient theory is used to calculate the interfacial tension of the system. The predicted results of interfacial tensions of the system are in food agreement with the experimental data.
出处 《石油大学学报(自然科学版)》 EI CSCD 北大核心 2002年第1期75-78,82,共5页 Journal of the University of Petroleum,China(Edition of Natural Science)
基金 国家自然科学基金资助项目 (2 980 60 0 9) 石油大学 (北京 )校基金资助项目
关键词 甲烷+氮气/水体系 高压 界面张力 测定 计算 梯度理论 相平衡 methane+nitrogen/water system high pressure interfacial tension measurement calculation gradient theory phase equilibrium
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参考文献11

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二级参考文献3

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