کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
201671 460564 2012 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Application of PRSV2 equation of state and explicit pressure dependence of the Langmuir adsorption constant to study phase behavior of gas hydrates in the presence and absence of methanol
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Application of PRSV2 equation of state and explicit pressure dependence of the Langmuir adsorption constant to study phase behavior of gas hydrates in the presence and absence of methanol
چکیده انگلیسی

In this study, we present a simple thermodynamic model that predicts equilibrium pressures as a function of temperature of hydrates with CH4, C2H6, C3H8, N2, CO2 and their mixtures as guests in the presence and absence of methanol. The model is based on equality of water fugacity in the liquid water and hydrate phases. The van der Waals and Platteeuw model is applied for calculating the fugacity of water in the hydrate phase. The Stryjek and Vera modification of Peng–Robinson (PRSV2) equation of state is used to evaluate the fugacity of water in the vapor and liquid phases. To achieve more accurate results, binary interaction parameters are adjusted as a linear function of temperature. In this work, we used a new pressure- and temperature-dependent Langmuir adsorption constant proposed by Hsieh. Acceptable agreement between the model predictions and experimental data exhibits its reliability.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 333, 15 November 2012, Pages 63–73
نویسندگان
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