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选用山东电力用煤,通过将贫煤与不同煤种进行两两掺混,利用管式炉等设备进行燃烧试验,由烟气分析仪测得烟气中所含NO浓度并记录处理数据,分析氧体积分数、温度对贫煤与不同煤种混烧时NO排放特性的影响规律。结果表明:随氧体积分数的增大,NO排放曲线呈现第一峰值增大且出现时刻提前、总排放量增大、总排放时间明显缩短的趋势。贫煤与褐煤混烧时选择合适的燃烧温度对NO排放有一定的抑制作用;与烟煤、无烟煤混烧时不同温度下NO总排放时间和总排放量接近。
Selected Shandong electric coal, through the lean coal with different coal for every two or two, the use of tube furnace and other equipment for combustion test, the flue gas analyzer to measure the concentration of NO contained in the flue gas and record the processing data analysis Effects of Oxygen Volume Fraction and Temperature on NO Emissions from Mixed Lean and Different Coal Blends. The results showed that with the increase of oxygen concentration, the NO emission curve showed the trend that the first peak value increased, the time appeared earlier, the total emission increased and the total emission time significantly shortened. When the lean coal and lignite are mixed, the proper combustion temperature can restrain the NO emission. When the mixture is mixed with bituminous coal and anthracite coal, the total NO emission time and total emissions are close at different temperatures.