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Flammability characteristics studies on toluene and methanol mixtures with different vapor mixing ratios at 1 atm and 150°C

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Abstract

The flammability characteristics of chemical substances are very important for safety considerations in manufacturing processes. This study investigated the mixing of toluene and methanol mixtures with five vapor mixing ratios (100/0, 75/25, 50/50, 25/75 and 0/100 vol.%) at initial conditions of 1 atm and 150°C, and determined the flammability properties to identify their potential fire and explosion hazards. These safety-related parameters included lower explosion limit (LEL), upper explosion limit (UEL), maximum explosion overpressure (P max) and rate of maximum explosion pressure rise ((dP/dt)max); all of them were measured by a 20-L-Apparatus.

In terms of flammability tests for this research, the experimental results indicated that when methanol was increased, which could induce a higher range of flammability, afterwards the situation could be triggered to a dangerous level, such as fire or explosion. Based on the above-mentioned, we could obtain a series of flammability properties and provide inherently safer design in related industrial processes for preventing serious fire and explosion accidents.

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Authors and Affiliations

  1. Doctoral Program, Graduate School of Engineering Science and Technology, National Yunlin University of Science and Technology (NYUST), 123, University Rd., Sec. 3, Douliou, Yunlin, Taiwan, 64002, Republic of China

    Y. M. Chang, J. -R. Chen & C. -M. Shu

  2. Department of Safety, Health, and Environmental Engineering, NYUST, 123, University Rd., Sec. 3, Douliou, Yunlin, Taiwan, 64002, Republic of China

    J. -C. Lee

  3. Department of Occupational Safety and Health, China Medical University, 91 Hsueh-Shih Rd., Taichung, Taiwan, 40402, Republic of China

    H. -J. Liaw

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  1. Y. M. Chang
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  2. J. -C. Lee
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  4. H. -J. Liaw
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  5. C. -M. Shu
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Correspondence to C. -M. Shu.

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Chang, Y.M., Lee, J.C., Chen, J.R. et al. Flammability characteristics studies on toluene and methanol mixtures with different vapor mixing ratios at 1 atm and 150°C. J Therm Anal Calorim 93, 183–188 (2008). https://doi.org/10.1007/s10973-007-8873-2

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  • DOI: https://doi.org/10.1007/s10973-007-8873-2

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