کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6589051 456831 2016 21 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Prediction of vapor-liquid equilibria for mixtures of low boiling point compounds using Wong-Sandler mixing rule and EOS/GE model
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Prediction of vapor-liquid equilibria for mixtures of low boiling point compounds using Wong-Sandler mixing rule and EOS/GE model
چکیده انگلیسی
Vapor-liquid equilibrium (VLE) of low boiling point components occurs at low-temperature and usually at high pressure. A proper method for computing the fugacity coefficient is to use a cubic equation of state with mixing rules. However, empirical mixing rules include one adjustable parameter and cannot predict VLE of some mixtures accurately. An alternative that could be used for non-ideal mixtures is the Wong-Sandler mixing rule, which is derived based on the excess Gibbs energy (GE). In this research, VLE of light gaseous mixtures was calculated at low temperatures and medium to high pressures using the Peng-Robinson equation of state (PR EOS), the Wong-Sandler mixing rule, and the NRTL equation as a GE model. This introduces an additional adjustable parameter. Assuming the adjustable parameters as a function of temperature, the results show that this thermodynamic model is an appropriate method to predict VLE of low boiling point materials at wide range of temperatures.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Science - Volume 152, 2 October 2016, Pages 343-350
نویسندگان
, , ,