Thermalhazard evaluation for methyl ethyl ketone peroxide mixedwith inorganic acids |
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| Authors: | J. M. Tseng R. H. Chang J. J. Horng M. K. Chang C. M. Shu |
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| Affiliation: | (1) Doctoral Candidate, Graduate School of Engineering Science and Technology, , National Yunlin University of Science and Technology (NYUST), Douliu, Yunlin, Taiwan, ROC, 64002, 123, University Rd., Sec. 3;(2) Doctoral Candidate, Department of Chemical Engineering, National Chung Hsing University, Taichung, Taiwan, ROC, 402, 250, Kuo-Kwang Rd.;(3) Department of Safety, Health, and Environmental Engineering, National Yunlin University of Science and Technology (NYUST), Douliu, Yunlin, Taiwan, ROC, 64002, 123, University Rd., Sec. 3 |
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| Abstract: | Methyl ethyl ketone peroxide (MEKPO) possesses complex structures which have caused many incidents involving fires or explosions by mixing with incompatible substances, external fires, and others. In this study, reactivities or incompatibilities of MEKPO with inorganic acids (HCl, HNO3, H3PO4 and H2SO4) were assessed by differential scanning calorimetry (DSC) and vent sizing package 2 (VSP2). Parameters obtained by the above-mentioned devices could be readily employed to discuss the runaway reaction, such as onset temperature (T 0), heat of reaction (ΔH d), time to maximum rate (TMR), maximum self heat rate (dT/dt)max, adiabatic temperature rise (ΔT ad), maximum pressure of decomposition (P max) and so on. Mixing MEKPO with hydrochloric acid resulted in the lowest T 0 among inorganic acids. Nitric acid not only lowered the T 0 but also delivered the highest heat releasing rate or self heat rate (dT/dt), which was concluded to be the worst case in terms of contamination hazards during storage or transportation of MEKPO. |
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| Keywords: | DSC inorganic acids methyl ethyl ketone peroxide (MEKPO) runaway reaction vent sizing package 2 (VSP2) |
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