scholarly journals Measurement and Correlation of Liquid-Liquid Equilibrium Data of Mesityl oxide-Diethoxymethane-Water System

2021 ◽  
Vol 257 ◽  
pp. 03004
Author(s):  
Hongyue Guo ◽  
Mai Han ◽  
Yicong Zhao ◽  
Qingsong Li
Keyword(s):  
Experimental Data ◽  
Water System ◽  
Normal Pressure ◽  
Mesityl Oxide ◽  
Binary Interaction ◽  
Liquid Equilibrium ◽  
Good Reliability ◽  
Equilibrium Data ◽  
Binary Interaction Parameters ◽  
Relative Root

To provide essential data for the separation of diethoxymethane and system water using mesityl oxide as the extractant, in this paper, the liquid-liquid equilibrium data of the ternary system of ‘mesityl oxide + diethoxymethane + water’ was measured at 303.2 K, 313.2 K and 323 K under normal pressure. The experimental results showed that partition coefficient and separation factor were both larger than 1, indicating that diethoxymethane and water could be well separated with mesityl oxide. The linear correlation coefficient of Bachman and Hand equation was larger than 0.99, indicating that our experimental data has good reliability. At the same time, the binary interaction parameters of the model were obtained by correlating the experimental data with the NRTL and UNIQUAC models. The relative root mean square error (RMSD) of the experimental value and the calculation formula was less than 0.79%, indicating that both the NRTL and UNIQUAC models can be well associated with experimental data.

scholarly journals Isobaric Vapor Liquid Equilibrium Determination for 1,3,5-Trimethylbenzene + Ethanol and 1,3,5-Trimethylbenzene + n-Butanol Binary Systems

2019 ◽  
Vol 64 (4) ◽  
pp. 446-456
Author(s):  
Marilena Nicolae ◽  
Costin Sorin Bîldea
Keyword(s):  
Binary Systems ◽  
Binary Interaction ◽  
Liquid Equilibrium ◽  
Vapor Liquid Equilibrium ◽  
Distillation Columns ◽  
Liquid Liquid Extraction ◽  
Double Phase ◽  
Equilibrium Data ◽  
Binary Interaction Parameters ◽  
Vapor Liquid

The vapor-liquid equilibrium data are necessary for the design of the distillation columns which separate the mixture mesitylene – ABE components resulting from the liquid-liquid extraction of butanol from the ABE using 1,3,5-trimethylbenzene as solvent. In this work, the vapor - liquid equilibrium data is determined for the binary systems: ethanol + 1,3,5-trimethylbenzene and n-butanol + 1,3,5-trimethylbenzene at constant pressure of 93.325 KPa using a double phase circulation apparatus. Thus, P-T-x-y data is determined, which is further processed by regression to determine the binary interaction parameters of the NRTL and UNIQUAC models. Furthermore, the T-x-y diagrams are calculated using the completed thermodynamic models (NRTL and UNIQUAC) and the UNIFAC predictive model, and compared with the experimental diagrams.

Isobaric Vapor-Liquid Equilibria of Hexamethyl Disiloxane + Ethyl Acetate System at Normal Pressure

2011 ◽  
Vol 396-398 ◽  
pp. 968-972
Author(s):  
Wen Lin Zhang ◽  
Nan Meng ◽  
Ru Yi Sun ◽  
Chun Li Li
Keyword(s):  
Experimental Data ◽  
Ethyl Acetate ◽  
Normal Pressure ◽  
Liquid Equilibrium ◽  
Vapor Liquid Equilibrium ◽  
Equilibrium Data ◽  
Vle Data ◽  
Vapor Liquid Equilibria ◽  
Ethyl Acetate System ◽  
Vapor Liquid

Vapor-liquid equilibrium data of hexamethyl disiloxane + ethyl acetate system at 101.3kPa were measured by using double circulating vapor-liquid equilibrium still. The thermodynamic consistency of the VLE data was examined by Herrington method. Experimental data was correlated by NRTL and UNIQUAC parameter models. Both of the models satisfactorily correlated with the VLE data. The result showed that the NRTL model was the most suitable one to represent experimental data satisfactorily and the system had a minimum temperature azeotrope at 350.31 K and the mole azeotropic composition was 0.0330.

scholarly journals A Gibbs free energy minimization based model for liquid–liquid equilibrium calculation of a system containing oil, brine, and surfactant

2020 ◽  
Vol 75 ◽  
pp. 17
Author(s):  
Mostafa Hosseini ◽  
Amir H. Mohammadi
Keyword(s):  
Experimental Data ◽  
Free Energy ◽  
Gibbs Free Energy ◽  
Thermodynamic Modeling ◽  
Sodium Dodecyl ◽  
Binary Interaction ◽  
Ionic Surfactant ◽  
Liquid Equilibrium ◽  
Uniquac Model ◽  
Binary Interaction Parameters

Accurate and reliable phase equilibrium calculations of microemulsion systems are of great importance. This study deals with the thermodynamic modeling of Liquid–Liquid Equilibrium (LLE) of a system including oil (n-decane), brine (containing CaCl2 salt), and ionic surfactant (sodium dodecyl sulfonate). Two models of UNIQUAC and UNIQUAC + Debye–Hückel were used for thermodynamic calculations. The LLE experimental data were utilized to estimate the binary interaction parameters of UNIQUAC model and the adjustable parameter, b, of the Debye–Hückel model. The thermodynamic model calculates the microemulsion phase’s compositions by minimizing the Gibbs free energy of the LLE system using a combination of genetic algorithm and fmincon function in order to prevent local minima. The thermodynamic modeling results show an appropriate agreement with the experimental data. Accordingly, the presented model of this study can be used as a suitable method to investigate the liquid–liquid equilibrium of systems containing oil, water, and surfactant.

scholarly journals PARAMETER INTERAKSI BINER KESETIMBANGAN UAP-CAIR CAMPURAN ALKOHOL UNTUK OPTIMASI PROSES PEMURNIAN BIOETANOL

2017 ◽  
Vol 5 (2) ◽  
pp. 37-44 ◽  
Author(s):  
Asalil Mustain ◽  
Anang Takwanto ◽  
Dhoni Hartanto
Keyword(s):  
Interaction Parameters ◽  
Binary Interaction ◽  
Primary Alcohols ◽  
Liquid Equilibrium ◽  
Vapor Liquid Equilibrium ◽  
Temperature Function ◽  
Wide Range ◽  
Equilibrium Data ◽  
Binary Interaction Parameters ◽  
Vapor Liquid

In this work, the binary interaction parameters of vapor-liquid equilibrium for the mixtures of primary alcohols (methanol, ethanol, 1-propanol or 1-butanol) with C5 alcohols were obtained. A total of 15 systems that consisted of isobaric vapor-liquid equilibrium data at atmospheric pressure were selected. The binary interaction parameters were determined as temperature function by correlating the selected vapor-liquid equilibrium data using the Wilson, Non-Random Two-Liquid (NRTL) and Universal Quasi-Chemical (UNIQUAC) activity coefficient models. The binary interaction parameters were described as the temperature-dependent to increase the capability of the parameters for the application in wide range of temperature. The correlation showed good results because the root mean square deviation (RMSD) between the calculation values and experimental data were relatively low. The obtained parameters were very useful for optimizing the distillation column in the bio-ethanol purification process.

Simulation of Sulfolane Extraction Distillation Process

2014 ◽  
Vol 881-883 ◽  
pp. 324-328
Author(s):  
De Xin Liu
Keyword(s):  
Process Model ◽  
Technical Support ◽  
Binary Interaction ◽  
Distillation Process ◽  
Solution Theory ◽  
Liquid Equilibrium ◽  
Production Processes ◽  
Equilibrium Data ◽  
Binary Interaction Parameters ◽  
Standard Solution

The sulfolane extraction distillation (SED) process is widely applied to separate aromatics and non-aromatics, but it is difficult to build a model for SED because of unknown binary interaction parameters (BIPs). In this study, liquid-liquid equilibrium data are used to regress unknown BIPs, and other unknown BIPs are calculated based on standard solution theory, and then a process model for RIPPs SED is developed. The gap between model results and RIPPs patent is marginal. It is shown that properties method used and process model built in this paper could calculate the SED process correctly and provide theoretical and technical support to the actual production processes.

Liquid-Liquid Equilibrium for (Water + Palm Oil Biodiesel + Methanol) Ternary System at Different Temperatures

2012 ◽  
Vol 455-456 ◽  
pp. 867-871
Author(s):  
Xing Yue Yan ◽  
Yong Chun Cheng ◽  
Xiao Ping Hu
Keyword(s):  
Experimental Data ◽  
Ternary System ◽  
Palm Oil ◽  
Ternary Mixtures ◽  
Binary Interaction ◽  
Liquid Equilibrium ◽  
Different Temperatures ◽  
Tie Lines ◽  
Binary Interaction Parameters ◽  
Palm Oil Biodiesel

The liquid-liquid equilibrium (LLE) of ternary mixtures (water + palm oil biodiesel + methanol) was measured under atmospheric pressure and temperatures of 303.15K, 313.15K and 323.15K. The mutual solubility of biodiesel and water increased as the increasing of ratio of methanol. Also, the mutual dissolution of the mixture was slightly promoted by increasing temperature. The phase diagrams and tie lines for the ternary system were determined by high-temperature gas chromatography (HTGC). NRTL and UINQUAC models were applied to fit the experimental data for the ternary system, and the binary interaction parameters were obtained by regression on the experimental data. Both models could describe the LLE behavior of the systems fairly well.

Isothermal and isobaric vapour-liquid equilibrium data in the tetrachloromethane-sec-butyl alcohol system

1983 ◽  
Vol 48 (9) ◽  
pp. 2446-2453 ◽  
Author(s):  
Jan Linek
Keyword(s):  
Experimental Data ◽  
Boiling Point ◽  
Butyl Alcohol ◽  
Correlation Equations ◽  
Wilson Equation ◽  
Liquid Equilibrium ◽  
Raoult’S Law ◽  
System A ◽  
Equilibrium Data ◽  
Alcohol System

Isothermal vapour-liquid equilibrium data at 65, 73 and 80 °C and isobaric ones at 101.3 kPa were measured in the tetrachloromethane-sec-butyl alcohol system. A modified circulation still of the Gillespie type was used for the measurements. Under the conditions of measurement, the system exhibits positive deviations from Raoult's law and minimum boiling-point azeotropes. The experimental data were fitted to a number of correlation equations, the most suitable being the Wilson equation.

Parameters of the Bender Equation of State for Chloro Derivatives of Methane and Chlorobenzene

2001 ◽  
Vol 66 (6) ◽  
pp. 833-854 ◽  
Author(s):  
Ivan Cibulka ◽  
Lubomír Hnědkovský ◽  
Květoslav Růžička
Keyword(s):  
Experimental Data ◽  
Equation Of State ◽  
Virial Coefficient ◽  
Second Virial Coefficient ◽  
Virial Coefficients ◽  
Liquid Equilibrium ◽  
Second Virial Coefficients ◽  
Equilibrium Data ◽  
State Behaviour ◽  
Derivatives Of

Values of adjustable parameters of the Bender equation of state evaluated for chloromethane, dichloromethane, trichloromethane, tetrachloromethane, and chlorobenzene from published experimental data are presented. Experimental data employed in the evaluation included the data on state behaviour (p-ρ-T) of fluid phases, vapour-liquid equilibrium data (saturated vapour pressures and orthobaric densities), second virial coefficients, and the coordinates of the gas-liquid critical point. The description of second virial coefficient by the equation of state is examined.

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