Abstract
The flash point is an important physical property used to estimate the fire hazard of a flammable liquid. To avoid the occurrence of fire or explosion, many models are used to predict the flash point; however, these models are complex, and the calculation process is cumbersome. For pure flammable substances, the research for predicting the flash point is systematic and comprehensive. For multicomponent mixtures, especially a hydrocarbon mixture, the current research is insufficient to predict the flash point. In this study, a model was developed to predict the flash point of straight-chain alkane mixtures using a simple calculation process. The pressure, activity coefficient, and other associated physicochemical parameters are not required for the calculation in the proposed model. A series of flash points of binary and ternary mixtures of straight-chain alkanes were determined. The results of the model present consistent experimental results with an average absolute deviation for the binary mixtures of 0.7% or lower and an average absolute deviation for the ternary mixtures of 1.03% or lower.
Highlights
When a flammable liquid is transported, used, or stored, safe handling is important, which requires knowledge of the liquid’s fire and explosion hazard
An important property used to estimate the risk of fire and explosion for a flammable liquid is the flash point [1, 2]
0.00 1.90 0.00 0.53 1.72 2.51 0.00 0.95 mixtures used in this study, and their flash points are listed in Tables 2 and 3
Summary
When a flammable liquid is transported, used, or stored, safe handling is important, which requires knowledge of the liquid’s fire and explosion hazard. The models of flash point prediction are typically based on the relationship between the flash point and the thermodynamic properties of the compound. In addition to considering physical and chemical properties, Li developed a relatively simple model to calculate the flash point using the following equation [11]: Lg (A − Tf) = B − CN2/3,. To predict the flash point of straightchain alkane mixtures, a model was developed to reduce the number of required experiments. In this model, the thermodynamic parameters are not required. The model for straight-chain alkane mixtures was proposed for predicting flash point using the following equation:. (3) Kij is calculated using the determined results and the model
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