石油醚的爆炸极限和最大允许氧含量的试验研究

Experimental study on explosive limits and maximum allowable oxygen content of Petroleum ether

采用FRTA爆炸极限测试仪测试研究了石油醚在空气中的爆炸极限以及在不同温度下和加入不同体积的惰性气体下的爆炸极限,分析了温度和惰性气体对石油醚的爆炸极限和最大允许氧含量的影响规律。结果表明,当温度升高时,石油醚的爆炸范围增大,最大允许氧含量的最大值和最小值都减小;当加入惰性气体时,石油醚的爆炸范围缩小,直至上、下限重合,退出爆炸范围,其最大允许氧含量的最大值和最小值也随着惰性气体的增加而降低或升高,直至重合;通过对比,得出石油醚的爆炸极限与最大允许氧含量的极限值是一一对应的关系。

FRTA explosion limits instrument was used to determine explosive limits of Petroleum ether in the air, and the explosive limits under different temperatures and with different volumes of inert gas.The influence of temperatures and inert gas on explosive limits and maximum allowable oxygen of Petroleum ether was analyzed. The results indicated that: when the temperature rose,the explosion range of Petroleum ether increased, the maximum and minimum values of maximum allowable oxygen content were reduced; with the adding of inert gas, the explosion range of Petroleum ether was reduced until the upper and lower limits overlap and exit the explosion range. The maximum and minimum values of maximum allowable oxygen content are also reduced or increased as the inert gas increases until they coincide.