二氧化碳对液化石油气抑爆实验研究

Experimental study on suppression of CO_2 on liquefied petroleum gas

通过对比氮气惰性,研究二氧化碳对液化石油气的抑爆性能。结果表明,当二氧化碳体积分数超过36%时可燃混合气体退出爆炸范围,临界氧体积分数为12.8%;当氮气体积分数超过46%时可燃混合气体退出爆炸范围,临界氧体积分数为10.7%。故二氧化碳对液化石油气的抑爆效果比氮气好,并提出了安全扑救注意事项。

The suppression of CO2 on the liquefied petroleum gas was studied by comparing with N2.The results showed that when the volume fraction of CO2 was more than 36%,combustible mixed gas exited explosion range and the critical volume fraction of O2 was 12.8%;when the volume fraction of N2 was more than 46%,combustible mixed gas exited explosion range and the critical volume fraction of O2 was 10.7%.Therefore,the suppression effect of CO2 on liquefied petroleum gas is better than that of N2,and the notice was proposed in firefighting.