Theoretical Evaluation of the Explosion Regimes of Hybrid Mixtures

In a previous paper we showed that the theoretical evaluation of the thermo-kinetic parameters relevant to dust explosion (deflagration index; burning velocity and maximum pressure), may be performed by means of detailed simulations of the flame propagation of the volatiles produced during the pyrolysis/devolatilization step of the dust combustion. We recently measured the deflagration index and the maximum pressure of hybrid mixtures (nicotinic acid and methane), identifying different explosion regimes as function of the dust and gas concentrations in air. In this paper we present theoretical evaluation of the deflagration index, the burning velocity and maximum pressure for dust/gas-air mixtures at changing the concentration in order to identify the explosion regimes, experimentally found.