石炭の自然発火初期現象と空気中の酸素濃度との関係
1969 年 85 巻 969 号 p. 15-20
詳細
1969 年 85 巻 969 号 p. 15-20
The temperature difference, Δθdeg generated by the oxidation of coal is expressed for the oxygen contents [O2]% by equation (1).
The carbon dioxide production X′cc and the carbon monoxide production X′′cc are expressed by equation (2), (3).
The time of temperature rise, [ts] hrs, is expressed by equation (4).
Δθ=a1 [O2] n (1)
X′=a2 [O2] n′(2)
X′′=a3 [O2] n′′ (3)
[t2] =a4 [O2] -n (4)
n, n′, n′′are given by equation (5), (6), (7)
n=2.01-1.56 [C]×10-2 (5)
n′=2.13-0.02 [C](6)
n′′=2.06-0.02 [C](7)
Where [C]% is carbon contents, and a1, a2, a3, a4are constant for coal temperature.
