煤尘参数对管网瓦斯煤尘爆炸的影响,Energy Science & Engineering

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煤尘参数对管网瓦斯煤尘爆炸的影响
Energy Science & Engineering ( IF 3.5 ) Pub Date : 2022-04-01 , DOI: 10.1002/ese3.1147
Jia Jinzhang _{1,

2} , Wang Fengxiao _{1,

2} , Li Jie ₁ , Zhu Jinchao _{1,

2} , Chen Yinuo _{1,

2}

Affiliation

为研究煤尘粒径和煤尘质量浓度对瓦斯-煤尘爆炸的影响，我们使用包含多个组件和个体相互作用的管网系统进行了沉积瓦斯-煤尘爆炸实验，该系统由独立设计和建。然后基于因子响应面理论对实验结论进行了理论上的验证。当煤尘粒径一定时，爆炸的最大爆炸压力、火焰传播速度和火焰温度随着质量浓度的增加先升高后降低。当煤尘质量浓度一定时，最大爆炸压力、火焰传播速度、并且爆炸的火焰温度也随着粒径的增大而先升高后降低。煤尘的质量浓度和粒径值为100 g/m^分别为3和 50 μm，在这些条件下，爆炸最为猛烈。质量浓度对最大爆炸压力和火焰温度的影响大于煤尘粒径，粒径对火焰前沿速度的影响大于煤尘质量浓度。本研究得出的结论为煤尘对瓦斯-煤尘混合爆炸的影响提供了广义的理论依据。

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Effect of coal dust parameters on gas-coal dust explosions in pipe networks

To study the effects of particle size of coal dust and mass concentration of coal dust on gas-coal dust explosions, we conducted sedimentary gas-coal dust explosion experiments using a pipe network system that included multiple components and individual interactions, which were independently designed and constructed. Experimental conclusions were then theoretically verified based on factor response surface theory. When the particle size of coal dust was constant, the maximum explosion pressure, flame propagation velocity, and flame temperature of the explosion initially increased and then decreased with increasing mass concentration. When the mass concentration of coal dust was constant, the maximum explosion pressure, flame propagation velocity, and flame temperature of the explosion also initially increased and then decreased with increasing particle size. The mass concentration and particle size values of the coal dust were 100 g/m³ and 50 μm, respectively, and under these conditions, the explosion was the most violent. The effects of mass concentration on the maximum explosion pressure and flame temperature were greater than the particle size of the coal dust, and the effect of particle size on the flame front velocity was greater than the mass concentration of the coal dust. The conclusions obtained in this study provide a generalized theoretical basis for the effects of coal dust on hybrid gas-coal dust explosions.

更新日期：2022-04-01

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