کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5484788 | 1399412 | 2016 | 30 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Phase equilibrium and kinetics of gas hydrates formed from CO2/H2 in the presence of tetrahydrofuran and cyclohexane
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم زمین و سیاره ای (عمومی)
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چکیده انگلیسی
In the present study, tetrahydrofuran (THF) and cyclohexane (CH) were combined as a mixed promoter to improve the hydrate based gas separation (HBGS) process for the separation of CO2 from a CO2/H2 gas mixture (40Â mol% CO2 and 60Â mol% H2). The amount of THF and CH used was fixed at 1.0Â mol% and 10 vol% respectively. The phase equilibrium data of gas hydrates formed in the presence of the mixed THFÂ +Â CH promoter were measured between 275.15Â K and 281.15Â K, and were compared with that obtained in the presence of other thermodynamic promoters (THF, cyclopentane, etc.). The hydrate dissociation enthalpy was calculated from the phase equilibrium data measured in the presence of the mixed THFÂ +Â CH promoter and was reported. In addition, kinetic experiments were conducted to assess the impact of the mixed promoter (1.0Â mol% THFÂ +Â 10 vol% CH) on CO2 selectivity from the CO2/H2 gas mixture. The results indicated that the addition of cyclohexane to 1.0Â mol% THF solution shifted the hydrate formation conditions to higher temperatures and lower pressures as compared to those obtained in the presence of 1.0Â mol% THF or 1.0Â mol% TBANO3, and the hydrate based CO2 selectivity obtained in presence of the mixed THFÂ +Â CH promoter was enhanced comparing with that obtained in the presence of THF.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Natural Gas Science and Engineering - Volume 35, Part B, September 2016, Pages 1566-1572
Journal: Journal of Natural Gas Science and Engineering - Volume 35, Part B, September 2016, Pages 1566-1572
نویسندگان
Dong-Liang Zhong, Yu-Rui Wang, Yi-Yu Lu, Wen-Chun Wang, Jia-Le Wang,