Binary liquid solutions exhibiting minimum flash-point behavior

Liaw, Horng‐Jang; Lee, T.-P.; Tsai, J.-S.; Hsiao, Wan-Chi; Chen, M.-H.; Hsu, Tai-Yi

doi:10.1016/s0950-4230(03)00004-4

Cited by 49 publications

(59 citation statements)

References 10 publications

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“…A sufficient condition for minimum/maximum flash points in binary mixtures has been proposed and verified with experimental data in previous works [33,34]. A minimum flash point occurs if flash point temperature decreases in the vicinity of x 1 ¼ 0 and increases near x 1 ¼ 1 (see Fig.…”

Section: The Condition For Minimum/maximum Flash Pointsupporting

confidence: 59%

On the relation between azeotropic behavior and minimum / maximum flash point occurrences in binary mixtures of flammable compounds

Cunha

Liaw

Gerbaud

2017

Fluid Phase Equilibria

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OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. This is an author-deposited version published in : http://oatao. b s t r a c tThe flash point temperature and the boiling temperature of a mixture are related by the fact that both can be modeled based on vapor-liquid equilibrium (VLE) of each component. It has been suggested in the literature that there might exist a concomitance between azeotropic behavior and minimum/maximum flash point temperature for binary mixtures. In order to verify this statement, we derive new temperature dependent functions that relate the conditions valid for azeotropic behavior and those valid for minimum/maximum flash point behavior. Analysis of experimental data and predicted results allowed us to propose a heuristic to forecast extremum flash point based on the sole knowledge of azeotropic data and boiling and flash point temperatures differences. Extremum flash point might occur when both components are flammable and when the gap between the flash point temperatures of individual components (DT fp ) is of the same order or smaller than the boiling temperature gap (DT b ). Hence, we contribute to the assessment of the fire and explosion hazards in binary mixtures eventually presenting a minimum flash point behavior.

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Section: The Condition For Minimum/maximum Flash Pointsupporting

confidence: 59%

On the relation between azeotropic behavior and minimum / maximum flash point occurrences in binary mixtures of flammable compounds

Cunha

Liaw

Gerbaud

2017

Fluid Phase Equilibria

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“…(Table 9). Such behavior was considered a sufficient condition for a mixture to form a minimum flash point solution [13], and the former two mixtures do exhibit a flash point of the mixture below the pure-substance flash points.…”

Section: Comparison Of Predicted and Measured Flash Pointsmentioning

confidence: 99%

“…A model for predicting the flash point of multi-component mixtures of only flammable compounds was also proposed [12] and verified using experimental data for ternary solutions. This model can be simplified for binary solutions, as proposed previously [4], with prediction of flash points verified for both ideal and non-ideal mixtures [4,13,14]. The model for binary solutions has been applied in deriving the criteria for determining whether a binary mixture may form a minimum/maximum flash point solution (below/above the pure-substance flash points) or not [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…This model can be simplified for binary solutions, as proposed previously [4], with prediction of flash points verified for both ideal and non-ideal mixtures [4,13,14]. The model for binary solutions has been applied in deriving the criteria for determining whether a binary mixture may form a minimum/maximum flash point solution (below/above the pure-substance flash points) or not [13,14]. Garland and Malcolm [15] (2002) developed a statistical model to predict the flash point of a single organic acid-water solutions: acetic acid + propionic acid + butyric acid + water.…”

Section: Introductionmentioning

confidence: 99%

“…The new models taking into account non-ideality of the solution through liquid phase activity coefficients have to be used to predict efficiently the flash point of these miscible mixtures [4,5,9,12,16]. Non-ideality of the liquid phase is in particular responsible to the occurrence of extreme flash-point behavior such as minimum and maximum flash-point behavior [13,14]. This is similar to minimum boiling and maximum-boiling azeotropic behavior in vapor-liquid equilibrium.…”

Section: Introductionmentioning

confidence: 99%

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Flash-point prediction for binary partially miscible mixtures of flammable solvents

Liaw

Gerbaud

et al. 2008

Journal of Hazardous Materials

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Flash point is the most important variable used to characterize fire and explosion hazard of liquids. Herein, partially miscible mixtures are presented within the context of liquid-liquid extraction processes. This paper describes development of a model for predicting the flash point of binary partially miscible mixtures of flammable solvents.To confirm the predictive efficacy of the derived flash points, the model was verified by comparing the predicted values with the experimental data for the studied mixtures: methanol + octane; methanol + decane; acetone + decane; methanol + 2,2,4-trimethylpentane; and, ethanol + tetradecane. Our results reveal that immiscibility in the two liquid phases should not be ignored in the prediction of flash point. Overall, the predictive results of this proposed model describe the experimental data well. Based on this evidence, therefore, it appears reasonable to suggest potential application for our model in assessment of fire and explosion hazards, and development of inherently safer designs for chemical processes containing binary partially miscible mixtures of flammable solvents.

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