华电技术 ›› 2012, Vol. 34 ›› Issue (4): 45-46.

• 技术交流 • 上一篇    下一篇

燃煤锅炉飞灰可燃物质量分数偏高的原因分析及对策

黄彦彰   

  1. 贵州华电桐梓发电有限公司,贵州桐梓563200
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2012-04-25 发布日期:2012-04-25

Analysis on reasons of higher mass fraction of combustible matter in fly ash of flue gas of coalfired boiler and countermeasures

HUANG Yanzhang   

  1. Guizhou Huadian Tongzi Power Generation Company Limited, Tongzi 563200, China
  • Received:1900-01-01 Revised:1900-01-01 Online:2012-04-25 Published:2012-04-25

摘要: 飞灰可燃物质量分数对燃煤机组经济性影响较大,在锅炉的热损失中,机械不完全燃烧热损失为2%,仅次于排烟热损失。贵州某电厂420t/h锅炉投运以来,飞灰可燃物质量分数一直偏高,通过分析,找出了飞灰可燃物质量分数偏高的原因,对锅炉进行了燃烧调整及设备改造,飞灰可燃物质量分数大大下降,取得了良好的经济效果。

关键词: 燃煤锅炉, 飞灰可燃物, 燃烧器, 改造, 经济性

Abstract: The mass fraction of the combustible matter in fly ash greatly influences on the economic efficiency of the coalfired unit. In the heat loss of the boiler, the heat loss caused by mechanically incomplete combustion is about 2% and only less than the heat loss caused by the exhaust flue gas. Since the 420t/h boiler of a power plant in Guizhou was put into operation, the mass fraction of combustible matter in the fly ash is always higher. According to analysis, the reasons of the higher mass fraction of combustible matter in fly ash were found. The boiler equipments were reformed, and the combustion in the boiler was adjusted. So the mass fraction of the combustible matter in fly ash had been decreased greatly; and favorable economic benefit was obtained.

Key words: coal-fired boiler, combustible matter in fly ash, burner, reformation, economic efficiency