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http://dx.doi.org/10.7842/kigas.2011.15.4.007

Explosion Properties and Thermal Stability of Reactive Organic Dust  

Han, Ou-Sup (Center for Chemical Safety and Health, Occupational Safety & Health Research Institute)
Han, In-Soo (Center for Chemical Safety and Health, Occupational Safety & Health Research Institute)
Choi, Yi-Rac (Center for Chemical Safety and Health, Occupational Safety & Health Research Institute)
Lee, Keun-Won (Center for Chemical Safety and Health, Occupational Safety & Health Research Institute)
Publication Information
Journal of the Korean Institute of Gas / v.15, no.4, 2011 , pp. 7-14 More about this Journal
Abstract
Using 20 L spherical explosion vessel and differential scanning calorimeter (DSC), an experimental investigation was carried on explosion characteristics and thermal decomposition of some reactive organic dust. As the result, the minimum explosion concentration of Benzoyl peroxide (BPO), Phthalic anhydride (PA) and 1-Hydroxybenzotriazol (HBT) exist between 10 and 15 g/$m^3$, which indicates that their explosion sensitivity are high. The maximum Kst values of HBT, PA and 97 % BPO are 251, 146 and 80 [$bar{\cdot}m/s$], respectively and the explosion severity of HBT is the explosion class of St-2. The flame velocity was also calculated from the combustion time of dust and flame arrival time to estimate the flame propagation characteristics in a closed vessel. The decomposition temperature and heat of decomposition reaction for 97 % BPO and HBT are $107^{\circ}C$ (1025 J/g), $214^{\circ}C$ (1666 J/g), respectively and it was found that these low decomposition temperature and high released heat affect the explosion characteristics.
Keywords
dust explosions; explosion pressure; minimim explosion concentration; deflagration index; decomposition temperature;
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Times Cited By KSCI : 1  (Citation Analysis)
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