Systematic studies were carried out to investigate the explosion characteristics and morphology of the multicomponent explosive gas mixture CH3O-NH3-air.It was found that the explosive limit of concentration of the gas mixture (CH3OH∶NH3=1∶1.1) was 12.85%—45.25%.There were only two explosion morphologies for the explosive gas mixture.One is cool flame

and the other is deflagration.Furthermore

strong detonation was not observed during the explosion experiments.N2 and steam did have some inert effect on the explosion of the explosive gas mixture

while NH3 had a clear damping effect on the explosion for the gas mixture with CH3OH and air.With the decrease of ratio of CH3OH to NH3

the degree of explosive danger

explosion maximum pressure and pressure rise rate decreased at the same time.The present work provides a good guidance for the technological upgrade of methanol ammoxidation in industrial production due to its good effectiveness of explosion suppression and powerful explosion-proof measure.It also has a potential application of methanol ammoxidation because of its substantial increase in productivity

low investment

rapid implementation

and high economic benefits.