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矿井通风瓦斯是矿井中主要由煤层气构成的以甲烷为主的有害气体,它是在煤的生成和煤的变质过程中伴生的气体,如今催化燃烧技术已成为处理矿井瓦斯最为有效的处理方法。文章模拟了不同入口预热温度、不同入口流速、不同甲烷体积分数以及不同通道尺寸大小对低浓度甲烷转化率及出口烟气温度的影响,发现提高入口温度、甲烷体积分数、降低入口流速以及减小通道尺寸可以提高甲烷转化率及出口烟气温度。
Mine ventilation gas is a methane-based harmful gas mainly composed of coal-bed methane in the mine. It is a gas associated with coal formation and coal metamorphism. Now, catalytic combustion technology has become the most effective treatment method for mine gas . The effects of different inlet preheating temperature, different inlet flow rates, different methane volume fractions and different channel sizes on the methane conversion at low concentration and the outlet flue gas temperature were simulated. It was found that increasing inlet temperature, methane volume fraction, decreasing inlet flow rate and decreasing Small channel size can increase methane conversion and outlet flue gas temperature.