摘要
分析了大武口发电厂 1号锅炉和华能北京热电厂 2号锅炉两类原因截然相反的锅炉灭火事件。在诊断试验的基础上 ,提出对氧量过大引起的灭火可采取降低一次风速和氧量 ,以及缩腰配风的运行方式 ;对严重缺氧引起的灭火可通过提高燃烧器出口过量空气系数、一次风煤比以及磨煤机出口风温解决。经过上述处理后这 2台锅炉再未发生过类似的灭火现象。
Boiler outfire events due to two completely different causes occurred on boiler No.1 of Dawukou Power Plant and boiler No.2 of Huaneng Beijing Power Plant have been analysed. On the basis of diagnotic tests, their solution methods are suggested as follows: (1) for outfire due to excessive oxygen, the secondary air velocity and oxygen quantity can be lowered, and the operation mode of shrunkenwaist air distribution being adopted; (2) for outfire due to serious lack of oxygen, the coefficient of excess air at outlet of the burner, the ratio of primary air and fuel, as well as the air temperature at outlet of coal pulverizer can be enhanced. After adopting abovementioned measures, similar outfire events haven't again occurred on the two said boilers.
出处
《热力发电》
CAS
北大核心
2003年第11期65-66,80,共3页
Thermal Power Generation
