توجه: محتویات این صفحه به صورت خودکار پردازش شده و مقاله‌های نویسندگانی با تشابه اسمی، همگی در بخش یکسان نمایش داده می‌شوند.
۱Measurment and correlation of liquid–liquid equilibria of water+2–butanol+2–ethyl–1–hexanol ternary system
نویسنده(ها): ، ، ،
اطلاعات انتشار: هفتمین کنگره ملی مهندسی شیمی، سال
تعداد صفحات: ۹
Liquid–liquid equilibrium data for the (water + 2–butanol + 2–ethyl–1–hexanol) ternary system were determined at T = (298.2, and 308.2) K in atmospheric pressure. This ternary system exhibits type– 2 behavior of LLE. Distribution coefficients and separation factors were measured to evaluate the extracting ability of the solvent. The consistency of the experimental tie–line data was determined through the Othmer–Tobias and Bachman equations. The raw experimental data were correlated using NRTL model. The results are very satisfactory, with root mean square deviations below 0.8% between experimental and calculated equilibrium mass fractions<\div>

۲Prediction of Hydrate Formation Pressure of Natural Gas Components Using Fugacity–Based Approach
نویسنده(ها): ، ،
اطلاعات انتشار: پانزدهمین کنگره ملی مهندسی شیمی ایران، سال
تعداد صفحات: ۴
The simplified perturbed–chain statistical association fluid theory (sPC–SAFT) equation of state were coupled with a fugacity–based approach to predict the hydrate formation pressure of methane, ethane and propane simple gas hydrates. New Lenard–Jones potential parameters for these gases were obtained by fitting to the pure experimental data based on sPC–SAFT coupled with Chen and Guo fugacity–based model. Comparison of the results to the experimental data and those in the literature confirms the validity of the used model as the average absolute errors in pressure were less than other well–known models<\div>

۳Solid–Liquid Equilibria of Water + Glycol\alcohol systems
نویسنده(ها): ، ،
اطلاعات انتشار: پانزدهمین کنگره ملی مهندسی شیمی ایران، سال
تعداد صفحات: ۴
Due to the application of glycols or alcohols as hydrate formation inhibitors, the exact knowledge on the phase behavior of both vapor–liquid and solid–liquid equilibria between water and glycols\alcohols is necessary. In the present work, the simplified perturbed–chain statistical association fluid theory (sPC–SAFT) equation of state duo to its capability for predicting the phase behavior of high complex systems are employed to correlate the Solid–Liquid equilibria of water + ethylene glycol\methanol Mixtures. Excellent agreement between experimental data and modelwas observed when this equation of state with one adjustable binary interaction parameter was coupled with the Scatchard–Hildebrand regular solution model to calculate the freezing point of water in the presence of various concentrations of glycol\alcohols<\div>
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