Page 403 - Air Pollution Control Engineering

09_chap_wang.qxd 05/05/2004 5:01 pm Page 377
Catalytic Oxidation 377

Table 3
Flammability Characteristics of Combustible Organic Compounds in Air

Compounds Molecular weight LEL(% vol) UEL(% vol)
Methane 16.04 5.0 15.0
Ethane 30.07 3.0 12.4
Propane 44.09 2.1 9.5
n-Butane 58.12 1.8 8.4
n-Pentane 72.15 1.4 7.8
n-Hexane 86.17 1.2 7.4
n-Heptane 100.20 1.05 6.7
n-Octane 114.28 0.95 3.2
n-Nonane 128.25 0.85 2.9
n-Decane 142.28 0.75 5.6
n-Undecane 156.30 0.68
n-Dodecane 170.33 0.60
n-Tridecane 184.36 0.55
n-Tetradecane 208.38 0.50
n-Pentadecane 212.41 0.46
n-Hexadecane 226.44 0.43
Ethylene 28.05 2.7 36.0
Propylene 42.08 2.4 11.0
Butene-1 56.10 1.7 9.7
cis-Butene-2 56.10 1.8 9.7
Isobutylene 56.10 1.8 9.6
3-Methyl-Butene-1 70.13 1.5 9.1
Propadlene 40.06 2.6
1,3-Butadlene 54.09 2.0 12.0
Acetylene 2.5 100.0
Methylacetylene 1.7
Benzene 78.11 1.3 7.0
Toluene 92.13 1.2 7.1
Ethylbenzene 106.16 1.0 6.7
o-Xylene 106.16 1.1 6.4
m-Xylene 106.16 1.1 6.4
p-Xylene 106.16 1.1 6.6
Cumene 120.19 0.88 6.5
p-Cumene 134.21 0.85 6.5
Cyclopropane 42.08 2.4 10.4
Cyclobutane 56.10 1.8
Cyclopentane 70.13 1.5
Cyclohexane 84.16 1.3 7.8
Ethylcyclobutane 84.16 1.2 7.7
Cycloheptane 98.18 1.1 6.7
Methylcyclohexane 98.18 1.1 6.7
Ethylcyclopentane 98.18 1.1 6.7
Ethylcyclohexane 112.21 0.95 6.6

(continued)