کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4989802 1456932 2017 24 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Numerical simulation of CO2 condensation process from CH4-CO2 binary gas mixture in supersonic nozzles
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Numerical simulation of CO2 condensation process from CH4-CO2 binary gas mixture in supersonic nozzles
چکیده انگلیسی
Supersonic separation technology is a technique potentially applicable in separating CO2 from natural gas. An Euler-Euler two-fluid model is developed to predict the spontaneous condensation process of CO2 in CH4-CO2 binary gas system during supersonic expansion using the nucleation theory and droplet growth model. The proposed model is validated by the experimental data obtained from literature and the effects of inlet temperature, pressure and gas composition on the condensation process are analyzed. The simulation results show that the homogeneous nucleation of CO2 occurs intensively within a short period in the diverging part of the nozzle and the mass fraction of condensed phase increases continuously until the nozzle outlet. The onset of the condensation occurs earlier and more CO2 can be condensed out of the gas mixture at lower inlet temperature, higher inlet pressure and bigger CO2 feed concentration.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 188, 29 November 2017, Pages 238-249
نویسندگان
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