Knowledge Management System Of Guangzhou Institute of Energy Conversion, CAS
| Hydrate Formation Phase Equilibrium Model in the Porous Media Based on PC-SAFT Equation of State | |
| Zeng Zhi-Yong; Li Xiao-Sen | |
| 2011-04-10 | |
| Source Publication | CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
 |
| Volume | 32Issue:4Pages:908-914 |
| Abstract | 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. |
| Subtype | Article |
| Keyword | Hydrate Porous Media Surface Tension Temperature Pore Radius |
| WOS Headings | Science & Technology ; Physical Sciences |
| WOS Subject Extended | Chemistry |
| WOS Keyword | PERTURBED-CHAIN SAFT ; GAS HYDRATE ; CARBON-DIOXIDE ; METHANE ; SILICA ; PORES |
| Indexed By | SCI |
| Language | 英语 |
| WOS Subject | Chemistry, Multidisciplinary |
| WOS ID | WOS:000290076100021 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.giec.ac.cn/handle/344007/10358 |
| Collection | 中国科学院广州能源研究所 |
| Affiliation | Chinese Acad Sci, Guangzhou Inst Energy Convers, Key Lab Renewable Energy & Gas Hydrate, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China |
| Recommended Citation 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. |
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