کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6687548 501883 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Experiments and thermodynamic simulations for continuous separation of CO2 from CH4 + CO2 gas mixture utilizing hydrate formation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
Experiments and thermodynamic simulations for continuous separation of CO2 from CH4 + CO2 gas mixture utilizing hydrate formation
چکیده انگلیسی
In this paper, we experimentally investigated the time evolution of compositions in the gas phase and the hydrate slurry during long-term operations of hydrate-based CO2 separation. We performed continuous gas separation experiments at pressure of 2.3 MPa and temperature of 273.2 K. We continually analyzed the compositions in the gas phase and the hydrate slurry formed from CH4 + CO2 gas mixture (CH4:CO2 = 0.40:0.60). We also carried out thermodynamic simulations under the same conditions to confirm the reliability of thermodynamic simulations for hydrate-based CO2 separation. We experimentally succeeded in separating CO2 from CH4 + CO2 gas mixture and understanding the time evolutions of compositions in the gas phase and the hydrate slurry. The compositions in the gas phase and the hydrate slurry reached a steady state in 15 h. The composition of CH4 in the gas phase and that of CO2 in the hydrate slurry reached 0.61 and 0.76 at the steady state, respectively. The deviations of the compositions in the gas phase and the hydrate slurry between the continuous gas separation experiments and thermodynamic simulations are 0.01 and 0.02, respectively. These results demonstrated that long-term operations of hydrate-based CO2 separation can be put into practice and support the reliability of thermodynamic simulations for hydrate-based CO2 separation.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Energy - Volume 146, 15 May 2015, Pages 104-110
نویسندگان
, , ,