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Experimental investigation on the macroscopic characteristic parameters of coal spontaneous combustion under adiabatic oxidation conditions with a mini combustion furnace

机译：微型燃烧炉绝热氧化条件下煤自燃宏观特征参数的实验研究

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摘要

Research on macroscopic characteristic parameters of coal spontaneous combustion under adiabatic oxidation conditions helps in the early detection of self-ignition of coal oxidation even coal fires. To achieve this aim, a mini combustion furnace for studying self-ignition of coal was designed and constructed. The coal sample came from Huang Lin coal mine, Shaanxi province, China. Then, the variations in temperature, gas ratios, oxygen consumption rate, heat intensity, and limit parameters were studied. Results show that during the process of coal oxidation, coal temperature and gas concentrations inside the furnace vary with the change of time, air leakage intensity, and heat dissipation condition. The variation trends of macroscopic characteristic parameters during the entire process of coal spontaneous combustion in a certain range of temperature under various oxygen concentrations can be applied for temperature prediction and fire prevention of coal.
机译：绝热氧化条件下煤自燃宏观特征参数的研究有助于早期发现煤氧化自燃，甚至引起火灾。为了达到这个目的，设计并制造了一种用于研究煤自燃的微型燃烧炉。煤炭样品来自中国陕西省黄林煤矿。然后，研究了温度，气体比率，耗氧率，热强度和极限参数的变化。结果表明，在煤氧化过程中，炉内煤温和瓦斯浓度随时间，漏气强度和散热条件的变化而变化。在一定的温度范围内，各种氧气浓度下，煤自燃全过程中宏观特征参数的变化趋势可用于煤的温度预测和防火。

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