STUDY ON NUMERICAL SIMULATION CONCERNING INFLUENCE OF FLAME CENTRE HEIGHT UPON COMBUSTION IN W-SHAPED FLAME BOILER

GAO Zheng-yang; CUI Wei-chun; YANG Yi-li; YAN Wei-pingCollege of Energy and Power Engineering

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STUDY ON NUMERICAL SIMULATION CONCERNING INFLUENCE OF FLAME CENTRE HEIGHT UPON COMBUSTION IN W-SHAPED FLAME BOILER

Thermal Power Generation Vol. 38, Issue 11, Pages: 23-27(2009)

更新时间：2025-09-28

- STUDY ON NUMERICAL SIMULATION CONCERNING INFLUENCE OF FLAME CENTRE HEIGHT UPON COMBUSTION IN W-SHAPED FLAME BOILER
- 作者机构：
  
  华北电力大学能源与动力工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK227.1
- Published：2009
- 稿件说明：
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GAO Zheng-yang, CUI Wei-chun, YANG Yi-li, et al. STUDY ON NUMERICAL SIMULATION CONCERNING INFLUENCE OF FLAME CENTRE HEIGHT UPON COMBUSTION IN W-SHAPED FLAME BOILER[J]. Thermal Power Generation, 2009, 38(11): 23-27.
DOI：

GAO Zheng-yang, CUI Wei-chun, YANG Yi-li, et al. STUDY ON NUMERICAL SIMULATION CONCERNING INFLUENCE OF FLAME CENTRE HEIGHT UPON COMBUSTION IN W-SHAPED FLAME BOILER[J]. Thermal Power Generation, 2009, 38(11): 23-27. DOI：

摘要

火焰中心位置是影响W型锅炉燃烧的重要因素。利用数值模拟技术对某电厂300MW机组W型火焰锅炉炉内燃烧进行了3个工况的计算。通过分析各个工况下炉内温度场、侧墙结渣原因、NOx排放量以及炉膛出口处飞灰含碳量得出

炉内火焰中心位置下移时

下炉膛内温度水平升高

侧墙附近和炉膛中部压差减小

NOx排放量明显降低

炉膛出口处飞灰含碳量基本上呈线性降低。

Abstract

The position of flame centre is an important factor affecting the combustion in W-shaped flame boilers.By using the numerical simulation technology

the combustion in W-shaped flame boiler for a 300 MW unit in one power plant has been calculated under three operating conditions.Through analysis of the temperature field in furnace

the causes resulting in slagging on side walls

the concentration of NOx emission

and the unburned combustibles in fly ash at outlet of the furnace under different operating conditions

it is obtained that the temperature level in the lower furnace rises when the flame centre in the furnace has moved downwards

reducing the pressure drfference between nearby side walls and the central part of the furnace

decreasing significantly the concentration of NOx emission

the unburned combustible content in fly ash at outlet of the furnace being reduced basically in linearity.

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