中国电力2011，Vol.44Issue(4)：55-58,4.
600MW机组对冲燃烧锅炉低氮燃烧改造及运行调整
Low NOx burner retrofit and operation adjustment of 600 MW opposed wall firing boiler
应明良 1戴成峰 2胡伟锋 2徐良 2屠小宝2
作者信息
- 1. 浙江省电力试验研究院,浙江,杭州,310014
- 2. 国电浙江北仑第一发电有限公司,浙江,宁波,315800
- 折叠
摘要
Abstract
For the high NO.duscharge density of 600 MW opposed wall firing boiler,the retrofitting of combustors with low NOx was carried on. By replacing low NOx burner,arranging OFA appropriately, and adopting staged-air furnace combustion technology, the NOx discharge density was decreased to 300 mg/m3.The unburned carbon mass fraction in fly ash was not changed greatly.By replacing parts of the low-temperatuer superheater with the economizer, the desuperheating water flow of superheater was reduced,the gas temperature in air preheater outlet was decreased and teh echaust gas temperature of boiler was decreased.All of these are good for improving the boiler efficiency.After the replacing of parts of the low-temperature superheater with the ecoomizer, the water temperature of economizer outlet wasd increated .But the under-saturationg temperaturae difference and the safety margin still exist.关键词
对冲燃烧/低氮燃烧改造/空气分级/受热面置换/运行调整分类
能源科技引用本文复制引用
应明良,戴成峰,胡伟锋,徐良,屠小宝..600MW机组对冲燃烧锅炉低氮燃烧改造及运行调整[J].中国电力,2011,44(4):55-58,4.
