Liquid Extraction

Treybal, Robert E.

doi:10.1021/ie50529a035

Cited by 32 publications

(43 citation statements)

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“…Hand's method is a well-known empirical correlation for tie lines in liquid-liquid equilibrium (Treybal, 1963). Consisting of a molar fraction and a natural logarithm, Hand's equation is given by ln (y 2 /y 1 )= k ln (x 2 /x 3 )+ C…”

Section: Models and Methodsmentioning

confidence: 99%

“…Basically, there are two approaches to correlating data. One of them uses equality of activity with a model for the activity coefficient; the other correlates data with equations such as that of Hand (Treybal, 1963). For practical utilization of equilibrium data in calculations of separation processes, sometimes it is convenient to describe equilibrium in terms of the distribution coefficients for each component.…”

Section: Introductionmentioning

confidence: 99%

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An empirical method to correlate and predict solute distribution in ternary liquid-liquid systems

Zamaro

Campanella

2002

Braz. J. Chem. Eng.

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-This paper presents a method that combines activity coefficient models with Hand's equation for tie lines. The proposed method calculates solute distribution in liquid-liquid ternary systems. The combination improves the calculated solute distributions using activity coefficient models while Hand's equation gives a good correlation of the experimental tie lines. The method could be used to extrapolate experimental information.

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Section: Models and Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An empirical method to correlate and predict solute distribution in ternary liquid-liquid systems

Zamaro

Campanella

2002

Braz. J. Chem. Eng.

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“…Using this property, the composition of the ternary azeotrope can be deduced by interpolation. A complete description of the calculation procedure can be found in previous references [12,14]. In addition, the temperature of the vapour curve presents a minimum at this point.…”

Section: Vapour-liquid and Vapour-liquid-liquid Equilibrium Datamentioning

confidence: 99%

“…Results were compared with the prediction made by the groupcontribution UNIFAC thermodynamic model. This ternary system is a type II system following Treybal classification [12], that is to say, one binary pair almost immiscible at any composition (water + toluene), one binary pair with a limited miscibility gap (water + 1-butanol) and the third binary pair is completely miscible (1-butanol + toluene). It has three binary azeotropes -two heterogeneous and one homogeneousand one ternary heteroazeotrope which is the lowest boiling specie of the whole system.…”

Section: Introductionmentioning

confidence: 99%

Phase equilibria of the water+1-butanol+toluene ternary system at 101.3kPa

Gomis

Font

Saquete

et al. 2015

Fluid Phase Equilibria

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Please cite this article as: Vicente Gomis, Alicia Font, María Dolores Saquete, Jorge García-Cano, Phase equilibria of the water + 1-butanol + toluene ternary system at 101.3kPa, Fluid Phase Equilibria http://dx.doi.org/10.1016/j.fluid. 2014.10.038 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.Phase equilibria of the water + 1-butanol + toluene ternary system at 101.3 kPa Vicente Gomis 1 , Alicia Font, María Dolores Saquete, Jorge García-Cano University of Alicante. PO Box 99 E-03080 Alicante (Spain) *Corresponding author:Tel. +34 965903400. vgomis@ua.es HighlightsThe phase equilibria of the system water + 1-butanol + toluene have been studied.Isothermal liquid-liquid equilibrium data at 313.15 K was determined.Isobaric vapour-liquid-liquid equilibrium data at 101.3 kPa was also determined.Data obtained has been checked against literature data and those predicted with binary interaction parameters.All experimental data have been correlated with thermodynamic models. AbstractIsobaric vapour-liquid and vapour-liquid-liquid equilibrium data for the water + 1-butanol + toluene ternary system were measured at 101.3 kPa with a modified VLE 602 Fischer apparatus. In addition, the liquid-liquid equilibrium data at 313.15 K were measured and compared with data from other authors at different temperatures. The system exhibits a ternary heterogeneous azeotrope whose temperature and composition have been determined by interpolation. The thermodynamic consistency of the experimental vapour-liquid and vapour-liquid-liquid data was checked by means of the Wisniak's L i /W i consistency test. Moreover, the vapour-liquid and the liquid-liquid equilibrium correlation for the ternary system with NRTL and UNIQUAC models, together with the prediction made with the UNIFAC model, were studied and discussed.

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“…Circulating droplet Treybal (1963) [84] ( ) pendent. The existing data base of LLECMOD contains five breakage frequency models.…”

Section: Mass-transfermentioning

confidence: 99%

LLECMOD: A Bivariate Population Balance Simulation Tool for Liquid- Liquid Extraction Columns

Attarakih¹,

Bart²,

Steinmetz³

et al. 2008

TOCENGJ

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Abstract:The population balance equation finds many applications in modelling poly-dispersed systems arising in many engineering applications such as aerosols dynamics, crystallization, precipitation, granulation, liquid-liquid, gas-liquid, combustion processes and microbial systems. The population balance lays down a modern approach for modelling the complex discrete behaviour of such systems. Due to the industrial importance of liquid-liquid extraction columns for the separation of many chemicals that are not amenable for separation by distillation, a Windows based program called LLECMOD is developed. Due to the multivariate nature of the population of droplets in liquid -liquid extraction columns (with respect to size and solute concentration), a spatially distributed population balance equation is developed. The basis of LLECMOD depends on modern numerical algorithms that couples the computational fluid dynamics and population balances. To avoid the solution of the momentum balance equations (for the continuous and discrete phases), experimental correlations are used for the estimation of the turbulent energy dissipation and the slip velocities of the moving droplets along with interaction frequencies of breakage and coalescence. The design of LLECMOD is flexible in such a way that allows the user to define droplet terminal velocity, energy dissipation, axial dispersion, breakage and coalescence frequencies and the other internal geometrical details of the column. The user input dialog makes the LLECMOD a user-friendly program that enables the user to select the simulation parameters and functions easily. The program is reinforced by a parameter estimation package for the droplet coalescence models. The scale-up and simulation of agitated extraction columns based on the populations balanced model leads to the main application of the simulation tool.

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Liquid Extraction

Cited by 32 publications

References 0 publications

An empirical method to correlate and predict solute distribution in ternary liquid-liquid systems

An empirical method to correlate and predict solute distribution in ternary liquid-liquid systems

Phase equilibria of the water+1-butanol+toluene ternary system at 101.3kPa

LLECMOD: A Bivariate Population Balance Simulation Tool for Liquid- Liquid Extraction Columns

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