Equilibrium conditions for CO2 hydrate in porous medium

被引：23

作者：

Yang, Mingjun ^{[1
]}

Song, Yongchen ^{[1
]}

Liu, Yu ^{[1
]}

Lam, Wei-Haur ^{[1
]}

Li, Qingping ^{[2
]}

机构：

[1] Dalian Univ Technol, Minist Educ, Key Lab Ocean Energy Utilizat & Energy Conservat, Dalian 116024, Peoples R China

[2] CNOOC Res Ctr, Beijing 100027, Peoples R China

来源：

JOURNAL OF CHEMICAL THERMODYNAMICS | 2011年 / 43卷 / 03期

基金：

中国国家自然科学基金;

关键词：

CO2; hydrate; NaCl; Porous medium; Equilibrium condition; CARBON-DIOXIDE HYDRATE; PORE-SIZE DISTRIBUTIONS; PHASE-EQUILIBRIA; AQUEOUS-SOLUTIONS; GAS-MIXTURES; ELECTROLYTE-SOLUTIONS; PREDICTION; METHANE; WATER; PROPANE;

D O I：

10.1016/j.jct.2010.10.007

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Experimental phase equilibrium conditions data for carbon dioxide (CO2) hydrate in porous medium with the presence of sodium chloride (NaCl) solution were investigated in this study. The experimental data were generated using graphic-method in presence of solutions contained (0, 0.2, 0.4, 0.6, and 0.8) mol/L NaCl. The results indicated the increase of NaCl concentration caused the enhancement in the equilibrium pressure of CO2 hydrate as the pore size and the temperature were kept the same. Effects of NaCl solutions on CO2 hydrate equilibrium conditions could be neglected when the temperature is lower than ice point. An improved model was used to predict CO2 hydrate equilibrium conditions, and the predictions showed good agreement with experimental measurements. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：334 / 338

页数：5

共 30 条

[1] PREDICTION OF HIGH-PRESSURE GAS SOLUBILITIES IN AQUEOUS MIXTURES OF ELECTROLYTES [J].