摘要
为了获取甲烷与不可燃组分组成的混合物的爆炸极限,采用一种基于绝热火焰温度的混合物爆炸极限估算方法,对CH4/N2和CH4/CO2这2种二元混合气体及3种不同阻燃剂体积分数的CH4/N2/CO2三元混合气体的爆炸极限进行实验研究,并将实验结果与估算值进行比较。CH4/N2与CH4/CO2二元混合物实验值与估算值在爆炸上限处的平均绝对偏差为0.34%,在爆炸下限处的平均绝对偏差为0.15%。3种不同比例的三元混合物实验值与估算值在爆炸上限处的平均绝对偏差为0.43%,在爆炸下限处的平均绝对偏差为0.20%。结果表明,估算方法对甲烷与不可燃组分的二元混合物与三元混合物爆炸极限的估算均具有较高的准确度。
Flammability limits for the binary mixtures of CH4/N2 and CH4/CO2 were measured, and the ternary mixtures of CH4/N2/CO2 with three different diluent volume ratios were studied. A method based on the adiabatic flame temperature was introduced to estimate the flammability limits of the mixtures, and the experimental results were compared with the estimated values. The average ab- solute deviation between the experimental results and estimated values of the lower flammability limit for the two binary mixtures is 0.15%, and for the upper flammability limit is 0.34%. The average absolute deviation between the experimental results and estimated values of the lower flammability limit for the three ternary mixtures is 0.20%, and for the upper flammability limit is 0.43 %. The results showed that the method is available for estimating the flammability limits of the binary and ternary mixtures of methane with diluent gases.
出处
《爆炸与冲击》
EI
CAS
CSCD
北大核心
2015年第5期747-752,共6页
Explosion and Shock Waves
基金
国家自然科学基金项目(51276142)
北京市科技计划重点资助项目(D12110900040000)
江苏省自然科学基金项目(SBK201122327)
关键词
爆炸力学
爆炸极限
绝热火焰温度
混合气体
CH4
阻燃剂
mechanics of explosion
flammability limit
adiabatic flame temperature
mixture
CH4
diluent
