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所谓气态可燃混合物是指可燃气体或蒸气同空气(包括纯氧气等助燃气体)形成的可燃混合气体。众所周知,聚集在一定空间内的气态可燃混合物被着火源点燃后,火焰会迅速向周围未燃的气态可燃混合物传播,这种现象一般被称为可燃混合气体的爆炸或爆燃。爆炸或爆燃是较为通俗的说法,如果按照火焰传播的机理来分析,上述气态可燃物的燃烧现象应该分为两种情况。一种是缓燃,缓燃火焰锋面是通过自由原子,自由基、离子、电子、光子等活化中心的传热和扩散一层一层地传播开的,其传播速度低于
The so-called gaseous combustible mixture refers to combustible gas or vapor with air (including pure oxygen and other combustion gases) to form a combustible gas mixture. It is well-known that when a gaseous combustible mixture collected in a certain space is ignited by an ignition source, the flame rapidly propagates to the surrounding unburned gaseous combustible mixture, which is generally called explosion or deflagration of a combustible gas mixture. Explosion or deflagration is a more common saying. According to the mechanism of flame propagation, the combustion of the above-mentioned gaseous combustibles should be divided into two situations. One is the burn-retardant, flame retardant front of the flame by free atoms, free radicals, ions, electrons, photons and other activation of the center of heat and spread spread layer by layer, and its propagation speed is lower than