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Calculation of phase equilibria for solutions of strong electrolytes in solvent—water mixtures

✍ Scribed by Eugénia A. Macedo; Per Skovborg; Peter Rasmussen

Publisher
Elsevier Science
Year
1990
Tongue
English
Weight
557 KB
Volume
45
Category
Article
ISSN
0009-2509

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✦ Synopsis

Sander model for correlation and prediction of salt effects on vapor-liquid equilibria (VLE) combines a Debye-Hiickel-type term with a modified UNIQUAC equation with concentration-dependent parameters. The Debye-Hiickel term has in this work been modified to ensure a more correct representation of the long-range forces. The modification has required a reestimation of previously published interaction parameters. It is shown that the modified model represents VLE for alcohol-water-salt mixtures with the same accuracy as the Sander model. The modified model has a broader range of applicability than the Sander model since the solvents acetone and I-butanol have been added to water,

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✍ Stephen C. Harmony; David C. Bonner; Hubert R. Heichelheim 📂 Article 📅 1977 🏛 American Institute of Chemical Engineers 🌐 English ⚖ 679 KB

## Abstract We have used recent ethylene/low‐density polyethylene gas sorption data to calculate phase equilibria for ethylene/polyethylene mixtures from 0 to 30.3 MN/m^2^ (0 to 300 atm), the pressure range normally used in the flash separation step in low‐density polyethylene manufacture. The comp