Influence of pilot fuel ratio on NO<sub>x</sub> generation characteristics in the can-annular combustion chamber

FU Zhongguang; SONG Jiasheng; SHI Li; GE Chen; WANG Ruixin

doi:10.19666/j.rlfd.201706056

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Influence of pilot fuel ratio on NO_x generation characteristics in the can-annular combustion chamber

Thermal Power Generation Vol. 47, Issue 4, Pages: 63-69(2018)

更新时间：2025-09-28

- Influence of pilot fuel ratio on NO_x generation characteristics in the can-annular combustion chamber
- 作者机构：
  
  1. 华北电力大学电站设备状态监测与控制教育部重点实验室
  2. 湘潭大学机械工程学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201706056
  CLC： TK16
- Published Online：09 April 2018，
  
  Published：2018
- 稿件说明：
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FU Zhongguang, SONG Jiasheng, SHI Li, et al. Influence of pilot fuel ratio on NO_x generation characteristics in the can-annular combustion chamber[J]. Thermal Power Generation, 2018, 47(4): 63-69.
DOI：

FU Zhongguang, SONG Jiasheng, SHI Li, et al. Influence of pilot fuel ratio on NO_x generation characteristics in the can-annular combustion chamber[J]. Thermal Power Generation, 2018, 47(4): 63-69. DOI： 10.19666/j.rlfd.201706056.

摘要

采用数值模拟对环管型燃烧室内NO_x生成规律进行了研究。通过改变值班燃料比获得燃烧室内流场、温度场以及热力型NO_x生成速率的分布。结果表明:随着值班燃料比的增大

中心轴线附近轴向速度有所上升

其他区域速度变化不大;值班火焰温度上升

中心轴线附近高温区范围扩大

高温明显促进了热力型NO_x的生成

其高速率范围基本与高温区重合。因此

在值班燃料比为4.0%~5.5%时

减小值班燃料比有利于降低出口NO_x排放质量浓度。

Abstract

The numerical simulation was used to analyze the NO_x generation rules in the can-annular combustion chamber.The distributions of flow field

temperature field and thermal NO_x generation rate in the combustion chamber were obtained by changing the pilot fuel ratio.The results show that

the axial velocity near the chamber central axis increases with the pilot fuel ratio

and the velocity in other areas shows little change.The increase in the temperature of the pilot flame widens the high temperature region near the central axis

which promotes the formation of thermal NO_x.And its high rate range coincides with the high temperature region.Therefore

decreasing the pilot ratio when it is in the range from 4.0% to 5.5% is beneficial to reduce the NO_x emission.

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Influence of pilot fuel ratio on NOx generation characteristics in the can-annular combustion chamber

DOI：10.19666/j.rlfd.201706056

摘要

Abstract

关键词

Keywords

references

Influence of pilot fuel ratio on NO_x generation characteristics in the can-annular combustion chamber