Abstract
Coke oven gas explosions are a ‘killer’ both in production and in the daily life of urban dwellers. It is important for the safe production of coke oven gas and the safety of urban dwellers in daily life to understand the processes governing coke oven gas detonation and to prevent or control explosions. Using N2 as an example, the mechanism by which inert gas suppresses the characteristics of coke oven gas explosions, such as the explosion limit, maximum explosion pressure, maximum rate of pressure rise, deflagration index and combustion flame, has been systematically examined and determined. The relevant theories have been investigated, and conclusions have been drawn. It was found that in explosions of turbulent mixtures, the maximum rate of pressure rise and maximum explosion pressure for coke oven gas–air mixtures decrease inversely with the increasing volume of N2 added. The influence of N2 on coke oven gas–air mixtures can also be observed from the variations in their flame with the addition of N2.
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