The SAFT for prediction of hydrate formation conditions of gas mixtures in the presence of methane, glycerol, ethylene glycol, and triethylene glycol

被引：5
|
作者：
Kou, Xuan [1 ,2 ,3 ,4 ]
Li, Xiao-Sen [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Gas Hydrate, Guangzhou 510640, Guangdong, Peoples R China
[2] Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China
[3] Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China
[4] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
ENERGY | 2019年 / 188卷
基金：
中国国家自然科学基金;
关键词：
SAFT; Gas hydrate; Phase equilibrium condition; Alcohol; Inhibitors; EQUATION-OF-STATE; VAPOR-LIQUID-EQUILIBRIUM; DISSOCIATION CONDITIONS; CARBON-DIOXIDE; HYDROGEN-SULFIDE; SYSTEMS; WATER; PRESSURES; STABILITY; ALCOHOLS;
D O I：
10.1016/j.energy.2019.116028
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The statistical associating fluid theory (SAFT) equation of state is employed to calculate the fugacities of all components in the vapor and liquid phases in equilibrium with the coexisting hydrate phase. Since the SAFE takes into account the interactions of hard-sphere repulsion, hard chain formation, dispersion and association between molecules, it can successfully predict the inhibiting effect of methanol, glycerol, ethylene glycol, and triethylene glycol on the hydrate formation of gas mixtures containing methane, ethane, propane and carbon dioxide. The predictions were in excellent agreement with experimental data. However, the traditional cubic equations of state fail for systems containing water, alcohols and hydrocarbons in general. (C) 2019 Elsevier Ltd. All rights reserved.
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页数：10
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