Study on Deflagration Control Methods of Low Concentration Gas Extraction in Tube

Water-mist,CO₂ inert gas and dry powder are very effective on suppressing gas deflagration.With the increase of spray water-mist volume,the mixed CO₂ concentration or sprayed dry powder quality are increased and flame propagation speed and peak overpressure are reduced.The inbibitional effect of water-mist,CO₂ inert gas and dry powder on deflagration is that the injection of water-mist,CO₂ inert gas and dry powder can greatly decrease the concentrations of H,O and OH in chain reaction.