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

Horng-Jang Liaw (1) , Wen-Hung Lu (1) , Vincent Gerbaud (2) , Chan-Cheng Chen (1)

1 China Medical University Taichung
2 LGC - Laboratoire de Génie Chimique

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.

Mots clés: Flash point; Prediction; Partially miscible mixtures; Vapor-liquid equilibrium; Liquid-liquid equilibrium

Domaines: Génie chimique

Horng-Jang Liaw, Wen-Hung Lu, Vincent Gerbaud, Chan-Cheng Chen. Flash-point prediction for binary partially miscible mixtures of flammable solvents. Journal of Hazardous Materials, 2008, vol. 153 ., pp. 1165-1175 available on : http://oatao.univ-toulouse.fr/13/1/gerbaud_13.pdf. ⟨10.1016/j.jhazmat.2007.09.078⟩. ⟨hal-00467108⟩