Numerical simulation of NO<sub>x</sub> emission from a 300 MW tangentially fired boiler

QI Xiaojuan; LI Fengrui; LI Jian; DING Liwei; MAO Linfang; MAO Linghui Zhejiang Electric Power Test and Research Institute

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Numerical simulation of NO_x emission from a 300 MW tangentially fired boiler

Thermal Power Generation Vol. 42, Issue 2, Pages: 49-53(2013)

更新时间：2025-09-28

- Numerical simulation of NO_x emission from a 300 MW tangentially fired boiler
- 作者机构：
  
  浙江省电力试验研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK227.1
- Published：2013
- 稿件说明：
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QI Xiaojuan, LI Fengrui, LI Jian, et al. Numerical simulation of NO_x emission from a 300 MW tangentially fired boiler[J]. Thermal Power Generation, 2013, 42(2): 49-53.
DOI：

QI Xiaojuan, LI Fengrui, LI Jian, et al. Numerical simulation of NO_x emission from a 300 MW tangentially fired boiler[J]. Thermal Power Generation, 2013, 42(2): 49-53. DOI：

摘要

利用Fluent软件平台对温州电厂300MW机组四角切圆燃烧锅炉炉内燃烧状况进行数值模拟

分析了炉膛温度场、速度场和气相组分浓度场的分布

并通过后处理方法计算了NOx的浓度分布。结果显示:数值模拟得到的炉膛燃烧状况基本符合四角切圆燃烧煤粉炉的实际运行情况;燃尽区的NO浓度不断增加

水平截面NO平均浓度最高值出现在OFA上部炉膛高度为30m处;炉膛出口温度和NOx排放量的模拟计算结果与试验数据误差均在15%以内。

Abstract

The computational Fluid Dynamics(CFD) Fluent software was employed to simulate the combustion process numerically in a 300MW tangentially fired boiler.The distribution of the temperature field

velocity field and gas phase component concentration field in furnace were analyzed.Moreover

the NOx concentration distribution was obtained by post processing.The results showed that

the simulated combustion situation in furnace basically agreed with the actual operation of the tangentially fired pulverized coal boiler.The NO emission and reduction reaction mainly concentrated in the burner high temperature region.In burnout area

the NO concentration increased continuously

and the highest average NO concentration in horizontal-cross section appeared at the upper part of the overfire air burner where 30 meters high from the furnace bottom.The deviations of furnace outlet temperature and NOx emission between the simulation results and experimental data were all within 15%.

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Numerical simulation of NOx emission from a 300 MW tangentially fired boiler

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Numerical simulation of NO_x emission from a 300 MW tangentially fired boiler