Thermal
hazard 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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| Institution: | (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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