Study on the Influence of Nitrogen on Methane Explosion under the Condition of Single-Layer Metal Wire Mesh Placement
In order to reduce the significant losses caused by methane explosions in chemical production,this study experimentally investigated the effect of nitrogen in a closed pipe containing metal wire mesh on methane explosions.By constructing a 3 m long closed pipe,single-layer metal wire mesh with mesh sizes of 10 mesh,16 mesh,20 mesh,and 30 mesh were placed at a distance of 1.9 m from the ignition source to analyze the impact of adding 10％nitrogen on the explosion characteristics of 10％methane/air premixed gas compared to without nitrogen.The experimental results show that adding 10％nitrogen effectively reduces flame intensity,decreases flame speed,attenuates explosion overpressure,delays the time to peak overpressure during the explosion.Importantly,adding nitrogen and changing the mesh size of the metal wire mesh do not alter the position of the maximum flame speed.This study provides theoretical insights for safety design in confined spaces.
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