Influence of Gas from Long-Flame Coal Spontaneous Combustion on Gas Explosion Limit

Table 3

Statistics of explosion limit test data for combustible gases.

CO explosion limit		C2H4 explosion limit		C2H6 explosion limit		CH4 explosion limit		CH4 explosion hazard	Explosion limit of mixed gas		Mixed gas explosion hazard
Lower explosive limit	Upper explosive limit	Lower explosive limit	Upper explosive limit	Lower explosive limit	Upper explosive limit	Lower explosive limit	Upper explosive limit		Lower explosive limit	Upper explosive limit
12.1	73.8	2.7	35.6	3.2	14.9	5.1	15.5
Explosion hazard H = 5.1		Explosion hazard H = 12.2		Explosion hazard H = 3.6		Explosion hazard H = 2.0
CO concentration		C2H4 concentration		C2H6 concentration
0		0		0		5.1	15.5	2.03	5.1	15.5	2.03
0.2		0		0		4.55	15.35	2.37	4.75	15.55	2.27
0.4		0		0		4.45	15.25	2.43	4.85	15.65	2.23
0.6		0		0		4.30	15.20	2.53	4.95	15.80	2.19
0.8		0		0		4.25	15.15	2.56	5.05	15.95	2.16
0		0.2		0		3.8	14.95	2.93	4.0	15.15	2.78
0		0.4		0		3.7	14.8	3.00	4.1	15.20	2.71
0		0.6		0		3.4	14.0	3.12	4.0	14.6	2.65
0		0.8		0		3.0	13.9	3.63	3.8	14.7	2.87
0		0		0.2		3.78	14.25	2.77	3.98	14.45	2.63
0		0		0.4		3.52	14.02	2.98	3.92	14.42	2.68
0		0		0.6		3.32	13.4	3.04	3.92	14.0	2.57
0		0		0.8		2.98	12.2	3.09	3.78	13.2	2.49