Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
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The Measurement of Flash Point for Binary Mixtures of 2,2,4-Trimethylpentane, Methylcyclohexane, Ethylbenzene and p-xylene at 101.3 kPa

  • Hwang, In Chan (Department of Fire and Disaster Protection Engineering, Woosong University) ;
  • In, Se Jin (Department of Fire and Disaster Protection Engineering, Woosong University)
  • Received : 2020.09.17
  • Accepted : 2020.11.10
  • Published : 2020.12.31
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Abstract

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.

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References

  1. Liaw, H. J., Gerbaud, V., and Wu, H. T., "Flash-Point Measurements and Modeling for Ternary Partially Miscible Aqueous-Organic Mixtures," J. Chem. Eng. Data, 55(9), 3451-3461 (2010). https://doi.org/10.1021/je100163q
  2. Liaw, H. J., and Chiu, Y. Y., "A General Model for Predicting the Flash Point of Miscible Mixtures," J. Hazard Mater., 137(1), 38-46 (2006). https://doi.org/10.1016/j.jhazmat.2006.01.078
  3. Lees, F. P., Loss Prevention in the Process Industries, 2nd ed., Butterworth-Heinemann, Oxford, U.K. (1996).
  4. Poor, H. M., and Sadrameli, S. M., "Calculation and Prediction of Binary Mixture Flash Point Using Correlative and Predictive Local Composition Models." Fluid Phase Equilib, 440, 95-102 (2017). https://doi.org/10.1016/j.fluid.2017.03.006
  5. Da Cunha. S., Liaw, H. J., and Gerbaud, V., "On the Relation Between Azeotropic Behavior and Minimum / Maximum Flash Point Occurrences in Binary Mixtures of Flammable Compounds," Fluid Phase Equilib., 452, 113-134 (2017). https://doi.org/10.1016/j.fluid.2017.08.019
  6. Liaw, H. J., Lee, Y. H., Tang, C. L., Hsu, H. H., and Liu, J. H., "A Mathematical Model for Predicting the Flash Point of Binary Solutions." J. Loss Prev. Process. Ind., 15, 429-438 (2018). https://doi.org/10.1016/S0950-4230(02)00068-2
  7. Fishbein, L., Chemicals Used in the Rubber Industry, Springer, Berlin, Heidelberg, 45-95 (1990).
  8. Manuel, H. J., and Dierkes, W., Recycling of Rubber: Review Reports, Rapra Technology, Akron, Ohio, Report No. 99 (1999).
  9. Beauregard, D., "Locating and Estimating Air Emissions from Sources of Xylene," Office of Air Quality Planning and Standards, United States Environmental Protection Agency, EPA: Research Triangle Park (1994).
  10. Vora, B. V., Kocal, J. A., Barger, P. T., Schmidt, R. J., and Johnson, J. A., "Alkylation," Kirk-Othmer Encyclopedia of Chemical Technology, John Wiley & Sons, Hoboken, New Jersey (2003).
  11. Wilson, G. M., and Deal, C. H., "Activity Coefficients and Molecular Structure," Ind. Chem. Fundam., 1(1), 20-23 (1962). https://doi.org/10.1021/i160001a003
  12. Renon, H., and Prausnitz, J. M., "Local Compositions in Thermodynamic Excess Functions for Liquid Mixtures," AIChE J., 14(1), 135-144 (1968). https://doi.org/10.1002/aic.690140124
  13. Abrams, D. S., and Prausnitz, J. M., "Statistical Thermodynamics of Liquid Mixtures: A New Expression for the Excess Gibbs Energy of Partly or Completely Miscible Systems," AIChE J., 21(1), 116-128 (1975). https://doi.org/10.1002/aic.690210115
  14. National Fire Protection Association, Batterymarch Park, Quincy, MA. National Fire Codes, 7 (1985).
  15. Dortmund Data Bank Software Package (DDBSP), version 2006 professional, Software and Separation Technology GmbH. (http://www.ddbst.de).
  16. American Society for Testing Materials, Annual Book of ASTM Standards, 6 (1999).
  17. In, S. J., "Flash Point for Binary Mixtures of Methylcyclohexane, n-heptane and p-xylene," J. Ind. Eng. Chem., 32, 327-331 (2015). https://doi.org/10.1016/j.jiec.2015.09.013
  18. Hwang, I. C., Kim, S. W., and In, S. J., "Measurement of Flash Point for Binary Mixtures of Methanol, Ethanol, 1-propanol and Toluene," Fire Sci. Eng., 32(1), 1-6 (2018). https://doi.org/10.7731/KIFSE.2018.32.1.001
  19. Hwang, I. C., and In, S. J., "Measurement of Flash Point for Binary Mixtures of Ethanol, 1-propanol, 2-propanol and 2,2,4-trimethylpentane," Clean Technol., 25(2), 140-146 (2019). https://doi.org/10.7464/KSCT.2019.25.2.138
  20. Le Chatelier, H., "Estimation of Firedamp by Flammability Limits," Ann Mines, 19(8), 388-395 (1891).
  21. Liaw, H. J., Tang, C. L., and Lai, J. S., "A Model for Predicting the Flash Point of Ternary Flammable Solution of Liquid," Combust. Flame, 138(4), 308-319 (2004). https://doi.org/10.1016/j.combustflame.2004.06.002
  22. Poling, B. E., Prausnitz, J. M., and O'connell, J. P., The Properties of Gases and Liquids, 5th Edition, McGraw-Hill, New York City, U. S. (2001).
  23. White, D., Beyler, C. L., Fulper, C., and Leonard, J., "Flame spread on aviation fuels," Fire Saf. J., 28(1), 1-31 (1997). https://doi.org/10.1016/S0379-7112(96)00070-7
  24. Segura, H., Reich, R., Galindo, G., and Wisniak, J., "Phase Equilibria in the Systems Ethyl 1,1-Dimethylethyl Ether + Methylcyclohexane, 2,2,4-Trimethylpentane + Methylcyclohexane, and Ethyl 1,1-Dimethylethyl Ether + 2,2,4-Trimethylpentane + Methylcyclohexane at 94.00 kPa," J. Chem. Eng. Data, 44(5), 912-917 (1999). https://doi.org/10.1021/je980320m
  25. Martins, V. D., Granato, M. A., and Rodrigues, A. E., "Isobaric Vapor−Liquid Equilibrium for Binary Systems of 2,2,4-Trimethylpentane with o-Xylene, m-Xylene, p-Xylene, and Ethylbenzene at 250 kPa," J. Chem. Eng. Data, 59(5), 1499-1506 (2014). https://doi.org/10.1021/je401057z