Measurement and correlation of solid–liquid phase equilibria for binary and ternary systems consisting of N -vinylpyrrolidone, 2-pyrrolidone and water

Su, Ao; Li, Sifang

doi:10.1016/j.cjche.2017.09.012

Cited by 8 publications

(9 citation statements)

References 21 publications

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“…In a eutectic system with an ideal solid phase, the thermodynamic equilibrium equation of the SLE can be written by eq …”

Section: Thermodynamic Modelmentioning

confidence: 99%

“…As compared to the uncertainty of the activity coefficient, the specific heat difference between the liquid and solid is a small value, and thus it is commonly neglected. Assuming that Δ c p = 0, , eq can be simplified to …”

Section: Thermodynamic Modelmentioning

confidence: 99%

“…A simple model was investigated to describe the melting temperature of the binary mixtures. We assumed that the solid phase that formed in the phase change process was basically pure alkanes, and the solution was ideal; thus, γ i = 1 . On the basis of this assumption, the ideal solubility model is expressed by the solid–liquid equilibrium equation. …”

Section: Thermodynamic Modelmentioning

confidence: 99%

“…The activity coefficient, γ i , of the liquid phase is estimated using the UNIFAC model. In this model, the activity coefficient consists of two parts, the combinatorial and the residual, which can be calculated as follows: ,, …”

Section: Thermodynamic Modelmentioning

confidence: 99%

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Experimental Measurements and Thermodynamic Modeling of Melting Temperature of the Binary Systems n-C₁₁H₂₄–n-C₁₄H₃₀, n-C₁₂H₂₆–n-C₁₃H₂₈, n-C₁₂H₂₆–n-C₁₄H₃₀, and n-C₁₃H₂₈–n-C₁₅H₃₂ for Cryogenic Thermal Energy Storage

Shen

Peng

Ling

2019

Ind. Eng. Chem. Res.

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In this study, the phase diagrams for the binary systems of n-C11H24–n-C14H30, n-C12H26–n-C13H28, n-C12H26–n-C14H30, and n-C13H28–n-C15H32 were experimentally investigated to employ potential phase change materials (PCMs) for cryogenic applications. Besides, the phase diagrams were theoretically obtained on the basis of the ideal solubility and UNIFAC models, and the UNIQUAC, Wilson, and NRTL models were applied to build correlations between experimental and predicting values. The results show that the compositions of the eutectic points appear at 10 wt % C14 for the C11–C14 system, 17.8 wt % C13 for the C12–C13 system, 18 wt % C14 for the C12–C14 system, and 10 wt % C15 for the C13–C15 system with eutectic temperatures of 246.85, 257.75, 260.45, and 265.55 K, respectively. Moreover, the melting temperatures calculated using the theoretical models are in good agreement with the experimental results. The average relative deviations for the C11–C14 system and C13–C15 systems are merely 0.3814% and 0.3220%, respectively, by using the NRTL model. Simultaneously, the minimum relative deviations for the C12–C13 and C12–C14 binary systems are 0.3649% for the ideal solubility model and 0.4856% for the UNIFAC model. Finally, upon comparing the predicted results of the studied binary systems using the results of the five models, we find that the UNIFAC model provides the most accurate results for the melting temperatures.

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“…In a eutectic system with an ideal solid phase, the thermodynamic equilibrium equation of the SLE can be written by eq …”

Section: Thermodynamic Modelmentioning

confidence: 99%

Section: Thermodynamic Modelmentioning

confidence: 99%

Section: Thermodynamic Modelmentioning

confidence: 99%

Section: Thermodynamic Modelmentioning

confidence: 99%

See 2 more Smart Citations

Experimental Measurements and Thermodynamic Modeling of Melting Temperature of the Binary Systems n-C₁₁H₂₄–n-C₁₄H₃₀, n-C₁₂H₂₆–n-C₁₃H₂₈, n-C₁₂H₂₆–n-C₁₄H₃₀, and n-C₁₃H₂₈–n-C₁₅H₃₂ for Cryogenic Thermal Energy Storage

Shen

Peng

Ling

2019

Ind. Eng. Chem. Res.

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“…Since the melting point of 2-P (24.6 °C) is quite different from that of the main impurity γ-butyrolactone (−43.5 °C) in the industrial grade 2-P, it is very suitable to purify it by melt crystallization. Therefore, falling film melt crystallization was used in this research for purification of industrial grade 2-P in order to obtain an ultrapure product.…”

Section: Introductionmentioning

confidence: 99%

Purification of 2-Pyrrolidone by Falling Film Melt Crystallization

Chen

2021

Ind. Eng. Chem. Res.

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Industrial grade 2-pyrrolidone with a purity of 99.5% is produced by aminolysis of γ-butyrolactone and subsequent fractional distillation, but it still contains trace amounts of γ-butyrolactone and other impurities. Falling film melt crystallization was applied for further purification of 2-pyrrolidone from 99.5% to a very high purity. The effects of the precooling temperature, feed rate, cooling rate, final crystallization temperature, heating rate, and final sweating temperature on the purity and yield of 2-pyrrolidone were studied. 2-Pyrrolidone was purified by falling film melt crystallization to a purity and yield of more than 99.9 and 73.3%, respectively. The mathematical model of falling film crystallization was applied for simulation of the crystal layer growth of 2-pyrrolidone. The simulated average thickness of the crystal layer was in good agreement with the experimental values, demonstrating the applicability of the model to falling film crystallization of 2-pyrrolidone.

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Experimental study and thermodynamic modeling of solid-liquid equilibrium of binary systems: Dodecane-tetradedcane and tridecane-pentadecane for cryogenic thermal energy storage

Shen

Peng

et al. 2019

Fluid Phase Equilibria

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Measurement and correlation of solid–liquid phase equilibria for binary and ternary systems consisting of N -vinylpyrrolidone, 2-pyrrolidone and water

Cited by 8 publications

References 21 publications

Experimental Measurements and Thermodynamic Modeling of Melting Temperature of the Binary Systems n-C₁₁H₂₄–n-C₁₄H₃₀, n-C₁₂H₂₆–n-C₁₃H₂₈, n-C₁₂H₂₆–n-C₁₄H₃₀, and n-C₁₃H₂₈–n-C₁₅H₃₂ for Cryogenic Thermal Energy Storage

Experimental Measurements and Thermodynamic Modeling of Melting Temperature of the Binary Systems n-C₁₁H₂₄–n-C₁₄H₃₀, n-C₁₂H₂₆–n-C₁₃H₂₈, n-C₁₂H₂₆–n-C₁₄H₃₀, and n-C₁₃H₂₈–n-C₁₅H₃₂ for Cryogenic Thermal Energy Storage

Purification of 2-Pyrrolidone by Falling Film Melt Crystallization

Experimental study and thermodynamic modeling of solid-liquid equilibrium of binary systems: Dodecane-tetradedcane and tridecane-pentadecane for cryogenic thermal energy storage

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Measurement and correlation of solid–liquid phase equilibria for binary and ternary systems consisting of N -vinylpyrrolidone, 2-pyrrolidone and water

Cited by 8 publications

References 21 publications

Experimental Measurements and Thermodynamic Modeling of Melting Temperature of the Binary Systems n-C11H24–n-C14H30, n-C12H26–n-C13H28, n-C12H26–n-C14H30, and n-C13H28–n-C15H32 for Cryogenic Thermal Energy Storage

Experimental Measurements and Thermodynamic Modeling of Melting Temperature of the Binary Systems n-C11H24–n-C14H30, n-C12H26–n-C13H28, n-C12H26–n-C14H30, and n-C13H28–n-C15H32 for Cryogenic Thermal Energy Storage

Purification of 2-Pyrrolidone by Falling Film Melt Crystallization

Experimental study and thermodynamic modeling of solid-liquid equilibrium of binary systems: Dodecane-tetradedcane and tridecane-pentadecane for cryogenic thermal energy storage

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Product

Resources

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Experimental Measurements and Thermodynamic Modeling of Melting Temperature of the Binary Systems n-C₁₁H₂₄–n-C₁₄H₃₀, n-C₁₂H₂₆–n-C₁₃H₂₈, n-C₁₂H₂₆–n-C₁₄H₃₀, and n-C₁₃H₂₈–n-C₁₅H₃₂ for Cryogenic Thermal Energy Storage

Experimental Measurements and Thermodynamic Modeling of Melting Temperature of the Binary Systems n-C₁₁H₂₄–n-C₁₄H₃₀, n-C₁₂H₂₆–n-C₁₃H₂₈, n-C₁₂H₂₆–n-C₁₄H₃₀, and n-C₁₃H₂₈–n-C₁₅H₃₂ for Cryogenic Thermal Energy Storage