六角切圆燃煤锅炉低氮燃烧器改造经济性分析

刘洪宪; 史梦燚

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六角切圆燃煤锅炉低氮燃烧器改造经济性分析

技术经济综述 | 更新时间：2025-09-28

- 六角切圆燃煤锅炉低氮燃烧器改造经济性分析
- Economy analysis for six-corner tangentially fired boiler suffered low NOxburner transformation
- 热力发电 2016年45卷第7期页码：7-12
- 作者机构：
  
  东北电力大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：
  中图分类号： TK223.23
- 纸质出版日期：2016
- 稿件说明：
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刘洪宪, 史梦燚. 六角切圆燃煤锅炉低氮燃烧器改造经济性分析[J]. 热力发电, 2016,45(7):7-12.

LIU Hongxian, SHI Mengyi. Economy analysis for six-corner tangentially fired boiler suffered low NOxburner transformation[J]. Thermal power generation, 2016, 45(7): 7-12.
刘洪宪, 史梦燚. 六角切圆燃煤锅炉低氮燃烧器改造经济性分析[J]. 热力发电, 2016,45(7):7-12. DOI：

LIU Hongxian, SHI Mengyi. Economy analysis for six-corner tangentially fired boiler suffered low NOxburner transformation[J]. Thermal power generation, 2016, 45(7): 7-12. DOI：

摘要

对某300MW机组六角切圆燃煤锅炉进行了低氮燃烧器改造

在每个角主燃烧器上方7m处新增了3层6个燃尽风喷口

并利用Fluent软件对炉内燃烧过程进行三维数值模拟和计算。结果表明:低氮燃烧器改造前后

锅炉热效率分别为91.30%和90.70%

脱硝成本分别为0.022 0元/(kW·h)和0.016 3元/(kW·h)

脱硝和锅炉效率总体成本分别为0.218 25元/(kW·h)和0.212 45元/(kW·h);低氮燃烧器改造后

炉内分级程度加深

氮氧化物排放减少

总体费用降低

节能效益明显。

Abstract

Transformation was conducted for low NOxburner of hexagonal tangential coal-fired boiler in a 300 MW unit.Six over fire air nozzle in three layers were added at the place with height of 7mabove the main burner.The Fluent software was applied to carry out three dimensional simulation for the combustion inside the furnace.The results show that

before and after the transformation

the boiler efficiency was 91.30% and 90.70%

the denitration cost were 0.022 0yuan/(kW·h)and 0.016 3yuan/(kW·h)

the overall cost of the denitration and boiler efficiency was 0.218 25yuan/(kW·h)and 0.212 45yuan/(kW·h).After low NOxburner transformation

the classification of the furnace deepened

the NOxemission reduced

the overall cost decreased

and the energy saving efficiency was obvious.

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