The Measurement of Flash Point for Binary Mixtures of 2,2,4-Trimethylpentane, Methylcyclohexane, Ethylbenzene and p-xylene at 101.3 kPa

In Chan Hwang; Se Jin In

Clean Technology, Vol.26, No.4, 279-285, December, 2020

DOI10.7464/ksct.2020.26.4.279 Export Citation

The Measurement of Flash Point for Binary Mixtures of 2,2,4-Trimethylpentane, Methylcyclohexane, Ethylbenzene and p-xylene at 101.3 kPa

In Chan Hwang, and Se Jin In^†

Department of Fire and Disaster Protection Engineering, Woosong University, 171 Dongdaejeon-ro, Dong-Gu, Daejeon 34606, Republic of Korea

E-mail:

Laboratories and industrial processes typically involve the use of flammable substances. An important property used to estimate fire and explosion risk for a flammable liquid is the flash point. In this study, flash point data at 101.3 kPa were determined using a SETA closed cup flash point tester on the following solvent mixtures: {2,2,4-trimethylpentane + methylcyclohexane}, {2,2,4-trimethylpentane + ethylbenzene}, and {2,2,4-trimethylpentane + p-xylene}. The purpose of this work is to obtain flash point data for binary mixtures of 2,2,4-trimethylpentane with three hydrocarbons (methylcyclohexane, ethylbenzene, and p-xylene), which are representative compounds of the main aromatic hydrocarbon fractions of petroleum. The measured flash points are compared with the predicted values calculated using the GE models’ activity coefficient patterns: the Wilson, the Non-Random Two-Liquid (NRTL), and the UNIversal QUAsiChemical (UNIQUAC) models. The non-ideality of the mixture is also considered. The average absolute deviation between the predicted and measured lower flash point s is less than 1.99 K, except when Raoult’s law is calculated. In addition, the minimum flash point behavior is not observed in any of the three binary systems. This work’s predicted results can be applied to design safe petrochemical processes, such as identifying safe storage conditions for non-ideal solutions containing volatile components.

Keywords:Flash point;Seta closed cup tester;Binary system;GE models

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[6] Liaw HJ, Lee YH, Tang CL, Hsu HH, Liu JH, J. Loss Prev. Process. Ind., 15, 429 (2018)

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[11] Wilson GM, Deal CH, Ind. Chem. Fundam, 1(1), 20 (1962)

[12] Renon H, Prausnitz JM, AIChE J., 14(1), 135 (1968)

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[22] Poling BE, Prausnitz JM, O’connell JP, The Properties of Gases and Liquids, 5th Edition, McGraw-Hill, New York City, U. S. (2001).

[23] White D, Beyler CL, Fulper C, Leonard J, Fire Saf. J., 28(1), 1 (1997)

[24] Segura H, Reich R, Galindo G, Wisniak J, J. Chem. Eng. Data, 44(5), 912 (1999)

[25] Martins VD, Granato MA, Rodrigues AE, J. Chem. Eng. Data, 59(5), 1499 (2014)