二氧化碳-超细水雾抑制甲烷爆炸的实验研究.

In order to research the influence of carbon dioxide and ultra-fine water mist on methane explosion in limit space, a semi-confined transparent chamber was designed with the size of 120mm×120mm×840mm, and the explosion suppression experiment about the effect of different aerosol ratio carbon dioxide and ultra-fine water mist on stoichiometric methane-air premixed mixture was studied. The experimental results show that: the explosion suppression effect of the combine of carbon dioxide and ultra-fine water mist was better than it of any inhibitor alone. Under a certain volume fraction of carbon dioxide, explosion overpressure, pressure rise rate and explosion flame propagation velocity obviously decreased with the increase of volume content of the ultra-fine water mist. When singly adding 2% carbon dioxide or 1.4mL ultra-fine water mist, the sum of overpressure peak value decrement of the two conditions was 72.3mbar; when adding them together, the overpressure peak value decrement was 97.95mbar. The results indicate that the synergistic effect of carbon dioxide and ultra-fine water mist on methane explosion is exist. [ABSTRACT FROM AUTHOR]