可燃气体(液体蒸气)的最小氧浓度的估算及影响因素研究

最小氧气浓度是可燃气体和液体蒸气的重要安全参数之一．对最小氧气浓度的理论计算方法进行了研究，同时对最小氧气浓度的影响因素进行了分析探讨，得出它要受到温度、压力和惰性气体等因素的影响．阐明了最小氧气浓度与爆炸下限是一一对应的关系；使用理论计算值应注意附加一定的安全系数；可通过减少反应中氧浓度、降压、降温、加入惰性气体等办法．以缩小爆炸极限范围、增大最小氧气浓度．从而将其控制在爆炸范围之外．图1．表4，参9．

Study on Estimate and Affecting Factors of the Minimum Oxygen Concentration of Flammable Gases (Liquid Vapors)

The minimum oxygen concentration (MOC) is one of the important safety parameters of flammable gases and liquid vapors theoretical calculation method of MOC was studied. At the same time, based on the large quantities of experiments, the affecting factors on MOC was examined,which is influenced by temperature, pressure, inert gases and so on. At last, it is presented that MOC and lower explosion limit are corresponding relationship;it attach certain safety factor when using theoretical calculation value of MOC;by the ways of reducing oxygen concentration in reaction, adding inert gas and so on,to narrow the scope of the explosion limit, increase MOC value, ultimately which control it beyond the explosion scope.1fig.,4tabs.,9refs.