کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
204760 460793 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Vapour–liquid–liquid and vapour–liquid equilibrium of the system water + ethanol + heptane at 101.3 kPa
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Vapour–liquid–liquid and vapour–liquid equilibrium of the system water + ethanol + heptane at 101.3 kPa
چکیده انگلیسی

Consistent vapour–liquid (VLE) and vapour–liquid–liquid (VLLE) data for the ternary system water (1) + ethanol (2) + n-heptane (3) are reported at 101.3 kPa at temperatures in the range of 341–352 K. An all-glass, dynamic recirculating still equipped with an ultrasonic homogenizer has been used in the determination of the VLLE. The experimental data indicates that a ternary heterogeneous azeotrope is present at 341.83 K with a composition of 0.205, 0.432, and 0.363 mole fractions of water, ethanol, and heptane, respectively. The experimental results have been used to test the accuracy of the UNIFAC, UNIQUAC, and NRTL models in the calculation and prediction of the equilibrium data. None of these methods properly correlate and approximate the top zone of the non-isothermal solubility curve, which is important for the simulation of the azeotropic distillation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 248, Issue 2, 20 October 2006, Pages 206–210
نویسندگان
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