Explosion severity of methane–coal dust hybrid mixtures in a ducted spherical vessel

This article reports an investigation on the explosion characteristics of methane–coal dust hybrid mixtures in a ducted spherical vessel. Methane–coal dust hybrid mixture explosion can occur in coal mines and spread into mine tunnels. While investigating the effects of methane addition to coal dust–air mixtures, the violence of coal dust explosions was found to increase significantly in the presence of methane. The energy of ignition was found to impact on the pressure rises in the vessel and in the duct. The experimental data and scientific analysis presented can assist in addressing ducted explosions originating from hybrid mixtures in process industries such as coal mines.