单项选择题
已知燃气的容积成分为:yCO2=5.7%,yCmHn=5.3%,yO2=1.7%,yCO=8.4%,yH2=2……
已知燃气的容积成分为:yCO
2=5.7%,yC
mH
n=5.3%,yO
2=1.7%,y
CO=8.4%,yH
2=20.93%,yCH
4=18.27%,yN
2=39.7%。则该燃气火焰传播极限为()(C
mH
n按C
3H
6计算)。(惰性气体与可燃气体混合比为1.589和0.678时,火焰的传播极限分别为11%~75%和22%~68%;未与惰性气体组合的甲烷的火焰传播极限为5.0%~15%,未与惰性气体组合的C
3H
3的火焰传播极限为2.0%~11.7%)
A.7.74%~35.31%
B.13.5%~88%
C.40%~73.5%
D.19%~71%