Flash point of binary and ternary mixture of biojet blends: Experimental data and modeling

• DOI: 10.1016/j.fluid.2023.113940
• Publication Date: 2023-09-03T05:19:13Z
• Authors: Filipe Hobi Bordó...; Flávio Andrade Te...; Rafael Macedo Dias; Débora Costa do N...; Antônio Marinho B...; Mariana Conceição...
• Keywords: UNIQUAC; UNIFAC; Ternary numeral system; Dodecane

The flashpoint (FP) holds significant importance in the fire risk mitigation and prevention strategies within fuel industry, specifically when considering biojet blends. This property directly impacts safety aspects associated with handling transportation of fuel, moreover FP blends exhibits variability based on specific type biofuel utilized percentage incorporated into blend. Hence, it is crucial to employ a precise model for estimation newly developed blends, ensuring compliance standards governing their transportation. Determination modelling such important, that presence other compounds (e.g. ethanol, esters) mixture can change its FP. study emphasized sensitivity fuels' regarding ethanol concentration applicability activity coefficient models predict mixtures. mixtures containing hydrocarbons (dodecane, tetradecane hexadecane) esters (methyl palmitate, ethyl palmitate biodiesel) as aviation surrogates were experimentally determined from 0.0 1.0 molar fraction range both binary ternary mixtures, totalizing 11 5 For all system, an abrupt decrease temperature was observed small additions ethanol. drop less expressive formed by hydrocarbon esters, due similarities between pure compounds. Besides, Liaw's approach combined UNIFAC, UNIFAC-Dortmund, UNIQUAC, NRTL well COSMO-RS, used calculate data studied resulting global root-mean-square deviations (RMSD) average deviation ranging 0.24 K 12.03 K. predictions provided more accurate than ideal (RMSD = 17.42 K) These results highlight significance accounting non-ideal effects estimating systems. Additionally, COSMO-RS UNIFAC proved be advantageous shape curve helped selection suitable biodiesel system provide essential information process assessment industry.