Numerical simulation on NO<sub>x</sub> emission from a 300 MW unit boiler

TONG Jialin1; 2; ZHAO Zhenning1; YE Xuemin2

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Numerical simulation on NO_x emission from a 300 MW unit boiler

Thermal Power Generation Vol. 42, Issue 6, Pages: 51-57(2013)

更新时间：2025-09-28

- Numerical simulation on NO_x emission from a 300 MW unit boiler
- 作者机构：
  
  1. 华北电力科学研究院有限责任公司
  2. 华北电力大学能源动力与机械工程学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TK229.6
- Published：2013
- 稿件说明：
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TONG Jialin1, 2, ZHAO Zhenning1, et al. Numerical simulation on NO_x emission from a 300 MW unit boiler[J]. Thermal Power Generation, 2013, 42(6): 51-57.
DOI：

TONG Jialin1, 2, ZHAO Zhenning1, et al. Numerical simulation on NO_x emission from a 300 MW unit boiler[J]. Thermal Power Generation, 2013, 42(6): 51-57. DOI：

摘要

对某亚临界300MW机组锅炉的NOx排放特性进行数值模拟

研究过量空气系数、燃尽风率、浓淡侧煤粉浓度比、一次风速对炉内温度场和NOx排放量的影响。计算和分析结果表明:过量空气系数减小

NOx排放减少;燃尽风率增大

NOx排放量降低;一次风喷口浓淡侧煤粉浓度比增大

NOx排放量下降;一次风速加大

NOx排放量增加。按数值模拟结果进行调整后

锅炉的NOx排放量由471mg/m3下降为226.79mg/m3

降低幅度达52%。

Abstract

Numerical simulation on NOx emission characteristic of a 300 MW subcritical coal fired boiler was performed.The effects of such factors as excess air coefficient

over fire air ratio

coal concentration ratio of coal rich side to the lean side and the primary air speed on the furnace temperature field and NOx emission was investigated.The results showed that

with a drop in excess air coefficient and an increase in over fire air ratio

the NOx emission decreased.The higher the coal concentration ratio of coal rich side to the lean side

the lower the NOx emitted.The increasing primary air speed resulted in high NOx emission.After regulation according to the simulation results

the NOx emission dropped by 52%

namely from 471 mg/m3 to 226.79 mg/m3.

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Related Author

LYU Xuyang

ZHANG Yongsheng

LI Chunxi

YE Xuemin

李源

陈鑫科

方庆艳

马仑

Related Institution

State Grid Hebei Electric Power Company Electric Power Science Research Institute

College of Electric Power, North China University of Water Resources and Electric Power

School of Electric Power, North China University of Water Resources and Electric Power

College of Electrical and Power Engineering, Taiyuan University of Technology

School of Energy Power and Mechanical Engineering, North China Electric Power University

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Numerical simulation on NOx emission from a 300 MW unit boiler

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摘要

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Numerical simulation on NO_x emission from a 300 MW unit boiler