燃煤机组锅炉结焦原因分析及优化

Cause Analysis and Optimization of Coking in Coal-fired Unit Boiler

某燃煤机组锅炉完成低氮燃烧器改造后,炉膛汽温偏高,在高负荷工况下易出现结焦问题。结合锅炉的结构特点,分析其燃烧特性及实际运行情况,采用加强燃料管理、控制制粉系统出口温度、调整燃尽风风门开度等优化措施,以减少锅炉结焦,保障机组的安全稳定运行。

After the low nitrogen retrofit of burner for a coal-fired unit boiler is completed,the furnace steam temperature is relatively high,prone to coking under high load conditions.The combustion characteristics as well as its actual operation conditions are analyzed in combination with the structural characteristics of the boiler.The optimization measures such as strengthening fuel management,controlling the outlet temperature of the pulverizing system and adjusting the opening degree of the over fired air damper are adopted,so as to reduce the coking of the boiler and ensure the safe and stable operation of the unit.