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开发了煤燃烧全生命周期在线监测系统,该系统实现了飞灰含碳量、沿炉膛高度温度场、入口风速以及风粉浓度的在线监测。系统在3层燃烧器高度位置的前后墙共布置10个炉内温度测点,通过在线监测炉内多层温度的波动变化,反映煤质特性和各层煤粉的着火特性,同时反映煤粉沿高度方向的燃尽过程。系统工作站对在线采集的数据进行计算和分析,得到实时的煤粉着火特性评价,并实时评价燃尽过程的合理性和燃烧效率。该系统还以炉内燃烧过程的数值计算作为辅助,分析炉内气场分布和结渣倾向主要区域,以及着火特性、燃尽特性、NO_x排放特性等。
An online monitoring system of coal combustion life cycle was developed. The system realizes on-line monitoring of the carbon content of fly ash, the temperature field along the hearth, the inlet wind speed and the concentration of wind powder. System in the three burner height position of the front and rear wall of the total arrangement of 10 furnace temperature measuring point, by online monitoring of furnace temperature fluctuations in the multi-layer to reflect the characteristics of coal and coal ignition characteristics of various layers, while reflecting the pulverized coal Burning process along the height. The system workstation calculates and analyzes the data collected online to obtain the real-time pulverized coal ignition characteristics evaluation and real-time evaluation of the burnout process rationality and combustion efficiency. The system also uses the numerical calculation of the combustion process in the furnace as an auxiliary to analyze the main area of gas field distribution and slagging tendency in the furnace, as well as the ignition characteristics, burnout characteristics, NO_x emission characteristics.