Determination and estimation of interfacial tension of CO<sub>2</sub>-cycloalkanes/aromatics

LI Lin; XIA Shuqian; SHANG Qiaoyan; MA Peisheng

doi:10.11949/0438-1157.20191260

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Determination and estimation of interfacial tension of CO₂-cycloalkanes/aromatics

Thermodynamics | 更新时间：2026-07-24

- Determination and estimation of interfacial tension of CO₂-cycloalkanes/aromatics
- CIESC Journal Vol. 71, Issue 1, Pages: 254-264(2020)
- 作者机构：
  
  1. 天津大学化工学院，天津 300350
  2. 山东师范大学化学化工与材料科学学院，山东济南 250014
- 作者简介：
- 基金信息：
- DOI：10.11949/0438-1157.20191260
  CLC： TE 09
- Received：23 October 2019，
  
  Revised：2019-10-30，
  
  Online First：12 August 2020，
  
  Published：05 January 2020
- 稿件说明：
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李琳, 夏淑倩, 商巧燕, 马沛生. CO₂-环烷烃/芳香烃界面张力的测定与估算[J]. 化工学报, 2020, 71(1): 254-264 DOI: 10.11949/0438-1157.20191260.

LI Lin, XIA Shuqian, SHANG Qiaoyan, MA Peisheng. Determination and estimation of interfacial tension of CO₂-cycloalkanes/aromatics[J]. CIESC Journal, 2020, 71(1): 254-264 DOI: 10.11949/0438-1157.20191260.
李琳, 夏淑倩, 商巧燕, 马沛生. CO₂-环烷烃/芳香烃界面张力的测定与估算[J]. 化工学报, 2020, 71(1): 254-264 DOI: 10.11949/0438-1157.20191260. DOI：

LI Lin, XIA Shuqian, SHANG Qiaoyan, MA Peisheng. Determination and estimation of interfacial tension of CO₂-cycloalkanes/aromatics[J]. CIESC Journal, 2020, 71(1): 254-264 DOI: 10.11949/0438-1157.20191260. DOI：

摘要

驱油技术是利用CO

采出被束缚在地层中的剩余油，提高采收率，同时实现CO

掩埋。由于CO

可降低原油的界面张力，CO

-原油系统的界面张力数据是CO

采油技术的重要基础数据。本研究采用悬滴法，选取原油系统中环烷烃和芳香烃典型代表，测定了40~120℃，0.27~14.70 MPa下，CO

-环戊烷/环己烷/环辛烷/ 甲苯/乙苯/乙基环己烷六个二元体系的界面张力。分析了

压力、温度、碳原子数及烷烃分子结构对界面张力的影响。结果表明，界面张力与压力呈线性关系；较低压力下，界面张力随温度的升高而降低，在较高压力下则呈现相反趋势；CO

-形态结构相同组分的界面张力随着碳数的增加而增大；分子间作用力对界面张力存在一定的影响。通过分析多种因素的影响，总结现有的CO

-原油(正构烷烃、环烷烃、芳香烃)实验数据，提出关联方程，将表面张力关联为温度、压力、碳原子数和偏心因子的函数，相关系数(

)为0.958，均方根误差(RMSE)及平均相对偏差(AARD)分别为1.12和11.01%。

Abstract

enhanced oil recovery technique uses CO

to extract the remaining oil trapped in the stratum to enhance oil recovery and achieve CO

landfill. Since CO

can reduce the interfacial tension of crude oil

the interfacial tension data of CO

-crude oil system is an important basic data of CO

Enhanced Oil recovery process. In this work

the interfacial tension data of CO

-cyclopentane/cyclohexane/cyclooctane/toluene/ethylbenzene/ethylcyclohexane were measured by pendent drop method at 40—120℃ in the pressure range of 0.27—14.70 MPa. The effects of pressure

temperature

carbon number and molecular structures on interfacial tension are analyzed. The results show that the interfacial tension values decrease with the pressure increasing when the temperature is constant. And at lower pressure

interfacial tension values decrease with the temperature increasing. But at higher pressure

it shows an opposite trend. The interfacial tension values of CO

-similar morphology structure increase with the carbon number. And the intermolecular forces have a certain effect on the interfacial tension. One empirical model for the interfacial tension is presented by analyzing the influences of these factors and summarizing the experimental data of CO

-crude oil (

-alkanes

cycloalkanes

aromatic hydrocarbons) binary system. In the model

the temperature

the pressure

the carbon number and the acentric factor were considered. The square of the correlation coefficient (

)

root mean square error (RM

SE) and average relative deviation (AARD) were 0.958

1.12

11.01% respectively.

关键词

Keywords

references

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⁰

Determination and estimation of interfacial tension of CO2-cycloalkanes/aromatics

DOI：10.11949/0438-1157.20191260

摘要

Abstract

关键词

Keywords

references

Determination and estimation of interfacial tension of CO₂-cycloalkanes/aromatics