Modeling Phase Equilibrium of Common Sugars Glucose, Fructose, and Sucrose in Mixed Solvents

2021 ◽  
Author(s):  
Benjamin Caudle ◽  
Maria C. Vieira ◽  
Maximilian B. Gorensek ◽  
Chau-Chyun Chen
Keyword(s):  
Phase Equilibrium ◽  
Mixed Solvents

Elastomer Swelling in Mixed Solvents

1999 ◽  
Vol 72 (1) ◽  
pp. 74-90 ◽  
Author(s):  
P. A. Westbrook ◽  
R. N. French
Keyword(s):  
Phase Equilibrium ◽  
Thermodynamic Data ◽  
Chemical Structure ◽  
Mixed Solvents ◽  
Equilibrium Concept ◽  
Solvent Phase ◽  
Empirical Procedure ◽  
Ideal Solutions ◽  
Linear And Nonlinear ◽  
Exposure Methods

Abstract A critical performance factor for elastomers in chemical service is absorption of solvents. Since swelling data are often limited to single component exposure, methods to estimate elastomer compatibility with mixed solvents have received considerable theoretical attention. The evolution of these methods is reviewed. Then, an alternative empirical procedure is proposed which is based upon a generalization of Flory's network-solvent phase equilibrium concept. The resulting linear and nonlinear partition coefficient models are used to predict swelling behavior of various elastomers in nearly ideal hydrocarbon solutions as well as other non-ideal solutions. Advantages of the current methods are that they utilize readily available swelling data of the elastomers in pure solvents and also thermodynamic data of the solution of interest. Adjustable parameters are required only when strong associative swelling agents are present. Finally, information regarding the chemical structure of the elastomer is not required.

scholarly journals EFFECT OF ELECTROLYTES ON THE TEMPERATURE PROFILE OF SALINE EXTRACTIVE DISTILLATION COLUMNS

2014 ◽  
Vol 44 (1) ◽  
pp. 41-46
Author(s):  
C. R. MUZZIO ◽  
E. O. TIMMERMANN
Keyword(s):  
Phase Equilibrium ◽  
Temperature Profile ◽  
Mixed Solvents ◽  
Extractive Distillation ◽  
Distillation Columns ◽  
Equilibrium Behavior ◽  
Nrtl Model ◽  
Newton Raphson ◽  
System 1

The effect of electrolytes in the temperature profile of saline extractive distillation columns is analyzed using a Newton–Raphson based program (acronym GKTM) with a new increase-bystep technique and applied to the system 1-propanolwater-LiNO3. In addition, the E-NRTL model is examined in order to validate its capability of making accurate predictions of phase equilibrium behavior and its suitability for simulation of extractive distillation columns. Special aspects of the phase equilibrium of mixed solvents electrolyte systems are analyzed. These particular features determine the special temperature profile in these cases.

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