摘要:通过对自燃煤矸石山内部烟气的平衡浓度(ψ)与温度(T)、压力比(p/p^θ)、水-空比(OL)之间关系的热力学模拟,得到了自燃煤矸石山发生爆炸的热力学条件.当α=100,p/p^θ=100,T=800~1200K时,煤矸石燃烧烟气中CO,CO2,H2,CH4和水蒸气的平衡浓度分别为:0.002~0.422,0.034~0.170,0.049~0.126,0.005~0.355和0.004~0.904,CO,H2,CH4爆炸性气体可发生化学爆炸.当α=100,p/p^θ=100,T=1200~1800K时,煤矸石燃烧烟气中CO,CO2,H2,CH4和水蒸气的平衡浓度分别为:3.8×10^-5~0.002,0.004~0.034,0.003~0.055,0~0.005和0.904~0.993,“烟气”中主要是高温高压水蒸气,可发生物理爆炸.
关键词:煤矸石山 自燃 爆炸 热力学
单位:河南理工大学安全科学与工程学院; 河南焦作454003
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