Effect of hydrogen on explosion of methane-air mixture
Abstract
Gas explosion is one of coal mine accidents in china. The main composition of the gas is methane, but hydrogen is contained in some coal seams and have some influence on gas explosion. In this paper, the main reaction path of gas explosion process is analyzed by CHEMKIN on the basis of detailed mechanism of methane combustion, and the main elementary reaction of effecting gas explosion at high temperature and the law of heat release from basic elements in gas explosion are analyzed. And effect of H2 on gas explosion is analyzed by numerical simulation. The research results show that H2 will reduce the priming induction period of gas explosion and has certain influence on the temperature and pressure after gas explosion.
