| DOI: | 10.1016/j.jcou.2014.12.002
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| Scopus记录号: | 2-s2.0-84919625594
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| 论文题名: | Solubility of n-alkanes in supercritical CO2 at diverse temperature and pressure |
| 作者: | Shi Q.; Jing L.; Qiao W.
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| 刊名: | Journal of CO2 Utilization
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| ISSN: | 22129820
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| 出版年: | 2015
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| 卷: | 9 | | 起始页码: | 29
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| 结束页码: | 38
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| 语种: | 英语
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| 英文关键词: | Cloud point pressure
; n-Alkane
; scCO2
; Solubility
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| Scopus关键词: | Carbon dioxide
; Enhanced recovery
; Oil shale
; Solubility
; Supercritical fluid extraction
; Accuracy and repeatabilities
; Cloud point pressure
; Enhanced oil recovery
; n-Alkanes
; Positive correlations
; scCO<sub>2</sub>
; Supercritical carbon dioxides
; Temperature and pressures
; Paraffins
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| 英文摘要: | Poor solubility of heavy hydrocarbons in CO2 has limited the application of CO2-EOR (enhanced oil recovery) in modern oil recovery industry to some extent. Therefore, it is crucial to investigate the solubility regularity of different hydrocarbons in supercritical carbon dioxide (scCO2) in the first place. In this paper, our objective is to explore the solubility of n-alkanes (C6H14-C18H38) in scCO2. To measure cloud point pressures, the experiment utilizes high-pressure view chamber, and results for accuracy and repeatability of the experimental method and instrument are evidently positive. Then, cloud point pressures for n-alkanes from 318 K to 343 K show a proximately linear and positive correlation with the temperature; they also increase with expanding chain length of n-alkanes. In addition, the result of x (molar fraction of n-alkane at cloud point pressure) indicates that x has a positive correlation with the pressure at identical temperature, and when pressure is constant, temperature increase will reduce x. Finally, relationship studies between density of CO2 and x reveal that, density of CO2 has a positive influence on the solubility of n-alkane, and the Chrastil model corrects ln ρ and ln S data. The measured data align with the Chrastil model, with a maximum AARD value of 9.85%. © 2014 Elsevier Ltd. All rights reserved. |
| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/52975
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| Appears in Collections: | 影响、适应和脆弱性
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| Recommended Citation: | |
Shi Q.,Jing L.,Qiao W.. Solubility of n-alkanes in supercritical CO2 at diverse temperature and pressure[J]. Journal of CO2 Utilization,2015-01-01,9
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