Analysis of a Vapor-liquid Equilibrium Still to be Used in the Study of Non-ideal Systems

Analysis of a Vapor-liquid Equilibrium Still to be Used in the Study of Non-ideal Systems PDF Author: William R. White
Publisher:
ISBN:
Category :
Languages : en
Pages : 90

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Analysis of a Vapor-liquid Equilibrium Still to be Used in the Study of Non-ideal Systems

Analysis of a Vapor-liquid Equilibrium Still to be Used in the Study of Non-ideal Systems PDF Author: William R. White
Publisher:
ISBN:
Category :
Languages : en
Pages : 90

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Vapour–Liquid Equilibrium

Vapour–Liquid Equilibrium PDF Author: Eduard Hála
Publisher: Elsevier
ISBN: 1483160866
Category : Technology & Engineering
Languages : en
Pages : 624

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Book Description
Vapor-Liquid Equilibrium, Second Edition covers the theoretical principles and methods of calculation of equilibrium conditions from various experimental data and the elements of measuring technique, as well as the instruments for the direct determination of the equilibrium compositions of the liquid and vapor phases of the system. The book discusses the relations necessary for the thermodynamic treatment of the equilibrium between the liquid and vapor phase of a system; the concept of an ideal solution and auxiliary thermodynamic functions; and the activity and the activity coefficient. The text also describes vapor-liquid equilibrium in real systems (electrolytes and non-electrolytes) and in systems whose components (i.e. temperature, pressure, and composition of phases) mutually react according to several stoichiometric equations. The criteria of purity of substances and the methods of measuring temperature; low, medium, and high pressures; the pressures of the saturated vapors at given temperatures; and the boiling points at given pressures used in laboratory work in the field of vapor-liquid equilibrium are considered. The book also tackles the methods for the direct determination of equilibrium data (distillation, circulation, static, dew and bubble point, and flow methods). The text concludes with a review of the literature on the systems whose vapor-liquid equilibrium data had been measured and reported to the beginning of 1954. Workers in the chemical industry who deal with problems of distillation and rectification will find the book useful.

THERMODYNAMIC ANALYSIS OF NON-IDEAL VAPOR-LIQUID EQUILIBRIUM.

THERMODYNAMIC ANALYSIS OF NON-IDEAL VAPOR-LIQUID EQUILIBRIUM. PDF Author: HARRY HERMAN STEINHAUSER (JR)
Publisher:
ISBN:
Category :
Languages : en
Pages : 304

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A Correlation of Vapor-liquid Equilibrium Data of Some Non-ideal Systems

A Correlation of Vapor-liquid Equilibrium Data of Some Non-ideal Systems PDF Author: Thomas J. Tully
Publisher:
ISBN:
Category :
Languages : en
Pages : 29

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Vapor-liquid Phase Equilibria of Nonideal Fluids with a Ge-EoS Model

Vapor-liquid Phase Equilibria of Nonideal Fluids with a Ge-EoS Model PDF Author: Socrates Ioannidis
Publisher:
ISBN:
Category : Fluid dynamics
Languages : en
Pages : 440

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Book Description
This study dealt with the prediction and correlation of vapor-liquid equilibria behavior of nonideal fluids. The thermodynamic formalism of the GE-EoS models, which combines the two traditional methods gamma-phi and phi-phi used so far for low and high pressure phase equilibria correlations respectively, has been combined with the 1FGE model, based on one-fluid theory, to produce a more consistent approach to the phase equilibrium problem. In the first part of our study we examine the predictive abilities of our model for vapor-liquid equilibria of highly nonideal fluids. The results establish the fact that the Huron-Vidal mixing rule with a one parameter version of the lFGE model, is able to successfully utilize available experimental information at low pressures for phase equilibria predictions of multicomponent mixtures over an extended range of pressures and temperatures. In the second part of the study we perform an analysis of the correlative abilities of the 1FGE model, as applied to hydrogen-hydrocarbon mixtures. The results of this part suggest that the unique local composition character of the 1FGE model, along with its one size and one temperature-dependent energy parameter, make it able to adequately describe vapor-liquid equilibria behavior of multicomponent mixtures for this highly asymmetric class of mixtures. Moreover, it is shown that the model parameters for binary hydrogen-hydrocarbon mixtures can be correlated to the acentric factor of the hydrocarbon. The important class of the refrigerant mixtures was modeled in the third part of this study. The lFGE model was introduced into the Wong-Sandler mixing rule, based on the infinite pressure state thermodynamic formalism. The results for these systems showed that a limited amount of experimental data, either at low or high pressures can be utilized to provide a parameter which is practically independent of the temperature set used. As shown from the results, this single parameter can be used to extend vapor-liquid equilibria predictions over a range of conditions for this difficult class of systems. More importantly, we set a heuristic rule able to screen multiparameter and one parameter models. A coordination temperature-parameter planet can be used as a predictive tool from a limited amount of information. Our model comes in lieu of the GE models based on two-fluid theory, which are inconsistent with the one fluid character of an EoS. The 1FGE-EoS framework proposed in this work meets current needs in the area of Applied Thermodynamics, which require that the model's parameters can be obtained from a limited information of experimental data and can give for accurate phase equilibria predictions of nonideal mixtures from low to high pressures.

Vapor-Liquid Equilibria Using Unifac

Vapor-Liquid Equilibria Using Unifac PDF Author: Aage Fredenslund
Publisher: Elsevier
ISBN: 0444601503
Category : Technology & Engineering
Languages : en
Pages : 393

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Book Description
Vapor-Liquid Equilibria Using UNIFAC: A Group-Contribution Method focuses on the UNIFAC group-contribution method used in predicting quantitative information on the phase equilibria during separation by estimating activity coefficients. Drawing on tested vapor-liquid equilibrium data on which UNIFAC is based, it demonstrates through examples how the method may be used in practical engineering design calculations. Divided into nine chapters, this volume begins with a discussion of vapor and liquid phase nonidealities and how they are calculated in terms of fugacity and activity coefficients, respectively. It then introduces the reader to the UNIFAC method and how it works, the procedure used in establishing the parameters needed for the model, prediction of binary and multicomponent vapor-liquid equilibria for a large number of systems, the potential of UNIFAC for predicting liquid-liquid equilibria, and how UNIFAC can be used to solve practical distillation design problems. This book will benefit process design engineers who want to reliably predict phase equilibria for designing distillation columns and other separation processes.

Vapour–Liquid Equilibrium Data at Normal Pressures

Vapour–Liquid Equilibrium Data at Normal Pressures PDF Author: Eduard Hála
Publisher: Elsevier
ISBN: 1483159124
Category : Mathematics
Languages : en
Pages : 551

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Book Description
Vapour-Liquid Equilibrium Data at Normal Pressures presents the direct experimental data of a set of selected systems and correlates the data with the aid of equations expressing the dependence of the activity coefficients or separation functions on the composition of the liquid phase. In the last columns of the tables, the deviations of the calculated from the direct experimental data are presented which give information on the quality of the data and on the flexibility of the correlation relations used. The text also describes the correlation of data in two-, three-, four-, and more than four-component systems.

Vapor-liquid Equilibrium Data

Vapor-liquid Equilibrium Data PDF Author: Shūzō Ōe
Publisher: Elsevier Science & Technology
ISBN:
Category : Science
Languages : en
Pages : 784

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Book Description
Vapor-liquid equilibrium (VLE) data are necessary for the design and operation of distillation processes. It is absolutely impossible to determine a distillation process without VLE data. The author of this book has had much experience designing and constructing distillation processes and towers and knows that VLE data must be easily retrievable, readily comprehensible, and precise. This volume contains the most important VLE data for 1,446 binary systems with Wilson parameters determined by computer processing. The data are also presented graphically. The Wilson equation, which is known as one of the most applicable to multicomponent systems, is employed for computer-aided determination of the optimum parameters using the non-linear least squares method.

A Thermodynamic Analysis of Correlations for Vapor-liquid Equilibria in Non-ideal Solutions

A Thermodynamic Analysis of Correlations for Vapor-liquid Equilibria in Non-ideal Solutions PDF Author: Marcelian Francis Gautreaux
Publisher:
ISBN:
Category : Chemical engineering
Languages : en
Pages : 260

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Vapor-liquid Equilibrium Data Collection: Aqueous-organic systems

Vapor-liquid Equilibrium Data Collection: Aqueous-organic systems PDF Author: Jürgen Gmehling
Publisher:
ISBN:
Category : Chemistry, Organic
Languages : en
Pages : 570

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