Experimental study of several inorganic salts-type inhibitor of oxygen consumption rate

doi:10.16265/j.cnki.issn1003-3033.2017.02.009

Abstract

Abstract: The paper was aimed at studying problems relating to application of iron-containing inorganic salt type fire inhibitors in coal mine fire protection.Laboratory-scale experiments were performed to observe effects of factors,composation of inhibitor,oxygen volume fraction in the atmosphere,temperature among others,on the oxygen consuming rate. The results show that the faster the oxygen volume fraction in the atmosphere, the higher the rate of oxygen consumption,that the oxygen consumption rate of the oxygen consuming fire inhibitor is increased by the increase in the temperature,that the amount of diatomite in the inhibitor has a significant effect on the oxygen consumption rate,that MgCl₂,NaCl,KCl and CaCl₂ differ from each other in the effect on the rate,and that there is a negative correlation between the oxygen consumption rate and the amounts of inorganic salts. When using the same amount of inorganic salts, the rate of oxygen consumption is v(MgCl₂)>v(NaCl)>v(KCl)>v(CaCl₂). With the increase of inorganic salt, the oxygen consumption rate was slowed down, and the oxygen consumption rate was the fastest using 0.15 g MgCl₂ deoxidizing agent.

Key words: oxygen consuming inhibitor, inorganic salt, oxygen consumption time, oxygen concentration, oxygen consumption rate

CLC Number:

X932

WANG Hongfei , WANG Jiren , HAO Chaoyu , HE Fei. Experimental study of several inorganic salts-type inhibitor of oxygen consumption rate[J]. China Safety Science Journal, 2017, 27(2): 47-52.

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