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Experimental study of mixed CH4/CO2 hydrate formation kinetics and modeling
Zhou, Xuebing1,2,3; Liang, Deqing1,2; Yi, Lizhi1,2,3
2014-11-01
发表期刊ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING
卷号9期号:6页码:886-894
摘要The gas hydrate formation process from CH4/CO2 gas mixtures was experimentally investigated in a 5.3L stirred reactor under isothermal-isochoric conditions in a feed pressure of 3.5MPa at the temperature ranging from 0.0 to 4.0 degrees C and CH4 mole fraction in the feed gas ranging from 0.2 to 0.8. The composition changes of the gas phase were determined by gas chromatography, and a simplified kinetic model was used to calculate the gas composition changes in the hydrate phase. The results showed that the initial gas consumption rates and the total gas consumptions of each gas species were remarkably enhanced as the temperature decreased. The gas consumptions can be well described by the kinetic model with an overall average absolute deviation of 5.2%. In addition, the hydrate formation from CH4/CO2 gas mixtures exhibited a good selectivity for CO2 capture in the early stage of hydrate crystallization, especially at high temperatures. Increased CO2 concentration in the feed gas could also efficiently accelerate the hydrate formation. It was suggested that CO2 played a key function in stabilizing hydrate structure in the newly formed hydrate nuclei. (c) 2014 Curtin University of Technology and John Wiley & Sons, Ltd.
文章类型Article
关键词Gas Hydrate Carbon Dioxide Methane Kinetics Co2 Recovery
WOS标题词Science & Technology ; Technology
DOI10.1002/apj.1839
研究领域[WOS]Engineering
关键词[WOS]CARBON-DIOXIDE ; NATURAL-GAS ; CLATHRATE HYDRATE ; METHANE RECOVERY ; PRESSURIZED CO2 ; CAGE OCCUPANCY ; LIQUID CO2 ; FLUE-GAS ; MIXTURES ; HYDROGEN
收录类别SCI
语种英语
WOS类目Engineering, Chemical
WOS记录号WOS:000346294200011
引用统计
文献类型期刊论文
条目标识符http://ir.giec.ac.cn/handle/344007/10678
专题中国科学院广州能源研究所
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Chinese Acad Sci, Guangzhou Ctr Gas Hydrate Res, Guangzhou 510640, Guangdong, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100083, Peoples R China
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Zhou, Xuebing,Liang, Deqing,Yi, Lizhi. Experimental study of mixed CH4/CO2 hydrate formation kinetics and modeling[J]. ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING,2014,9(6):886-894.
APA Zhou, Xuebing,Liang, Deqing,&Yi, Lizhi.(2014).Experimental study of mixed CH4/CO2 hydrate formation kinetics and modeling.ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING,9(6),886-894.
MLA Zhou, Xuebing,et al."Experimental study of mixed CH4/CO2 hydrate formation kinetics and modeling".ASIA-PACIFIC JOURNAL OF CHEMICAL ENGINEERING 9.6(2014):886-894.
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