Hydrate Formation Phase Equilibrium Model in the Porous Media Based on PC-SAFT Equation of State

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	Hydrate Formation Phase Equilibrium Model in the Porous Media Based on PC-SAFT Equation of State
	Zeng Zhi-Yong; Li Xiao-Sen
刊名	chemical journal of chinese universities-chinese
	2011-04-10
卷号	32 期号:4 页码:908-914
关键词	Hydrate Porous media Surface tension Temperature Pore radius
英文摘要	the thermodynamic model of hydrate equilibrium formation conditions in the porous media was studied. based on the penturbed chain-statistical associating fluid theory(pc-saft) equation of state(eos), combining with van der waals-platteuw model of hydrate and kelvin equation of capillary, a phase equilibrium computational model was built.. based on this model, the surface tension was further studied for methane and co(2) hydrate. firstly, values of surface tension were regressed from experimental equilibrium formation conditions. it is shown that the surface tension increases with the temperature increasing and decreases with the pore radius increasing, moreover, it shows a near-line trend. thus, the surface tension function of temperature and pore radius was proposed. parameters of the function were optimized from experimental data with genetic algorithm. the result shows that the revised model with the correlated surface tension has a distinct improvement in the predicting the hydrate equilibrium formation conditions, average absolute deviations are 1.66% and 2.76% for methane and co(2) hydrates, respectively.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, multidisciplinary
研究领域[WOS]	chemistry
关键词[WOS]	perturbed-chain saft ; gas hydrate ; carbon-dioxide ; methane ; silica ; pores
收录类别	SCI
语种	英语
WOS记录号	WOS:000290076100021
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/10358]
专题	中国科学院广州能源研究所
作者单位	Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Zeng Zhi-Yong,Li Xiao-Sen. Hydrate Formation Phase Equilibrium Model in the Porous Media Based on PC-SAFT Equation of State[J]. chemical journal of chinese universities-chinese,2011,32(4):908-914.
APA	Zeng Zhi-Yong,&Li Xiao-Sen.(2011).Hydrate Formation Phase Equilibrium Model in the Porous Media Based on PC-SAFT Equation of State.chemical journal of chinese universities-chinese,32(4),908-914.
MLA	Zeng Zhi-Yong,et al."Hydrate Formation Phase Equilibrium Model in the Porous Media Based on PC-SAFT Equation of State".chemical journal of chinese universities-chinese 32.4(2011):908-914.