Mg(OH)<sub>2</sub>/CO<sub>2</sub>抑爆瓦斯实验研究

Mg(OH)₂/CO₂抑爆瓦斯实验研究

摘要: 采用自主改进的20 L近球型抑爆实验系统，进行了Mg(OH)₂、CO₂气体及两者同时添加抑制瓦斯爆炸的实验。实验结果表明，Mg(OH)₂和CO₂气体均对瓦斯爆炸具有一定的抑制作用。CH₄体积分数为11%，同时添加250 mg/L Mg(OH)₂粉末和8% CO₂气体后，爆炸压力峰值时间延长3倍多，压力峰值、最大压力上升速率下降幅度分别为45.6%、79.9%。Mg(OH)₂混合CO₂气体的抑爆效果，比理论上叠加各自的抑爆效果弱。

Abstract: Using the self-improved 20 L spherical explosion suppression experimental system, gas explosion suppression experiments on Mg(OH)₂ and CO₂ and both of them were studied. The results indicates that Mg(OH)₂ and CO₂can suppress gas explosion. Adding Mg(OH)₂ which the concentration is 250 mg/L and CO₂ which the concentration is 8%, the time of the maximum explosion pressure prolongs more than three times, and the maximum explosion pressure and the maximum pressure rise rate decreased by 45.6% and 79.9%, when methane concentration is 11%. The explosion suppression effect of mixing Mg(OH)₂ and CO₂ is weak, compared with the effect which is added by Mg(OH)₂'s and CO₂'s.