کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9626103 | 460698 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Methane recovery from methane hydrate using pressurized CO2
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Methane recovery from methane hydrate using pressurized CO2 Methane recovery from methane hydrate using pressurized CO2](/preview/png/9626103.png)
چکیده انگلیسی
The dynamics of CH4 replacement in CH4 hydrate with high-pressure CO2 was observed with in situ laser Raman spectroscopy at temperatures ranging from 271.2 to 275.2Â K and at an initial pressure of 3.25Â MPa. The amount of CH4 hydrate decomposition was found to be almost proportional to that of CO2 hydrate formation for a series of 150Â h experiments at fixed temperatures. This confirmed that the CH4-CO2 replacement mainly occurred in the hydrate phase. Based on the rate data, a kinetic model was developed for CH4 hydrate decomposition and CO2 hydrate formation. Under CH4-CO2 replacement in the hydrate, the activation energies were determined to be 14.5Â kJ/mol for CH4 hydrate decomposition and 73.3Â kJ/mol for CO2 hydrate formation after a given initial period (ca. 10Â h). It was found that CH4 hydrate decomposition was probably dominated by re-arrangement of water molecules in the hydrate whereas CO2 hydrate formation seemed to be dominated by diffusion in the hydrate phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volumes 228â229, February 2005, Pages 553-559
Journal: Fluid Phase Equilibria - Volumes 228â229, February 2005, Pages 553-559
نویسندگان
Masaki Ota, Yuki Abe, Masaru Watanabe, Richard L. Jr., Hiroshi Inomata,