论文部分内容阅读
在可燃混气和凝聚态爆炸物质的整个燃烧历程中,发火过程是一个重要阶段。发火可分为点燃和自燃两种,本女主要是讨论自燃的问题。关于自燃的理论主要有链自燃理论和热自燃理论。链自燃是因活化中心在短时间内增加很快所致,它甚至可以在等温下进行,而热自燃则完全属于另一种类型,它是由于反应放出的热量不断积累,系统的温度上升,从而增加了化学反应的速度,而化学反应速度的增加又导致放热速度的加剧,提高了系统的温度,这样周而复始,当系统的温度达到自燃温度时,则会自行发火。
The ignition process is an important phase throughout the combustion of combustible gas mixtures and condensed explosive materials. Ignition can be divided into two types of ignition and spontaneous combustion, the female is mainly to discuss the issue of spontaneous combustion. The theory of spontaneous combustion mainly includes the chain spontaneous combustion theory and the theory of spontaneous combustion. Chain spontaneous combustion is due to activation of the center in a short period of time due to rapid increase, it can even be carried out in the isothermal, and the spontaneous combustion is completely belong to another type, it is due to the reaction of heat accumulation, system temperature rise, Thus increasing the speed of chemical reaction, and the increase of the chemical reaction rate leads to the exothermic rate is exacerbated, raising the temperature of the system, so cycle again and again, when the system temperature reaches the auto-ignition temperature, it will be angry.