含菌超细水雾抑制甲烷爆炸的实验研究

Experimental research on methane explosion inhibition with ultra fine-water mist containing methanotrophs

搭建小尺寸实验平台,采用压力传感器测量超细水雾抑爆过程中管道内的压力变化状况,研究含甲烷氧化菌的超细水雾对不同体积分数的甲烷气体爆炸的抑制效果。结果表明,含甲烷氧化菌的超细水雾能够使爆炸压力明显下降;预处理时间越长,爆炸最大压力下降越多;甲烷体积分数越大,爆炸最大压力越大;菌液雾化量越大,抑制甲烷爆炸效果越好。

By building a small size experimental platform, the pressure sensors were used to measure the pipe pressure change situation in the process of explosion suppression. The inhibition effect of ultra-fine water mist containing methanotrophs on ex- plosion of methane with different volume fraction was studied. The results suggested that ultra-fine water mist with metha： notrophs can obviously decrease explosion pressure; the longer the pretreatment time, the lower the maximum explosion pressure; the bigger the methane volume fraction, the bigger the maximum explosion pressure; the better the atomization, the better the inhibition.