Effect of Ammonia-doped Combustion on Flame and Emission Characteristics of Secondary Combustion in Axial Staged Combustion Chambers

XIAO Yunlai; LI Yuze; LI Yuansen; GE Bing

doi:10.19805/j.cnki.jcspe.2025.240199

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Effect of Ammonia-doped Combustion on Flame and Emission Characteristics of Secondary Combustion in Axial Staged Combustion Chambers

更新时间：2026-10-10

- Effect of Ammonia-doped Combustion on Flame and Emission Characteristics of Secondary Combustion in Axial Staged Combustion Chambers
- Chinese Journal of Power Engineering Vol. 45, Issue 6, Pages: 822-827(2025)
- 作者机构：
  
  上海交通大学机械与动力工程学院, 动力机械与工程教育部重点实验室,上海,200240
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2025.240199
  CLC：
- Online First：16 June 2025，
  
  Published：2025
- 稿件说明：
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肖运来,李昱泽,李原森,葛冰. 掺氨燃烧对轴向分级燃烧室二级燃烧火焰及排放特性的影响动力工程学报, 2025, 45(6): 822-827 https://doi.

org/10.19805/j.cnki.jcspe.2025.240199
肖运来,李昱泽,李原森,葛冰. 掺氨燃烧对轴向分级燃烧室二级燃烧火焰及排放特性的影响动力工程学报, 2025, 45(6): 822-827 https://doi. DOI： 10.19805/j.cnki.jcspe.2025.240199.

org/10.19805/j.cnki.jcspe.2025.240199 DOI：

摘要

为了分析甲烷和氨气燃料轴向分级燃烧的二次区流场、火焰结构及排放的规律

使用高频粒子图像速度分析仪(PIV)和OH

基自发光技术

探究常压条件下

动量通量比为6、射流角为135°的预混二次燃烧器使用不同种类的燃料轴向分级燃烧二次区流场结构、再燃火焰形态以及污染物排放特性。结果表明:当射流角为135°时

二次区场会在射流出口下游形成较大面积的低速回流区

有利于火焰传播速度较慢的燃料稳定燃烧;当使用甲烷掺氨为二次燃料时

再燃火焰位置向上游偏移

有更长的高温化学停留时间;开始掺氨燃烧时

随着掺氨比增加

射流火焰从连续火焰转变为脱体火焰

氨气射流火焰反应区拉长

留有充足反应距离可降低排放

所以排放量在脱体火焰形态时逐渐降低。

Abstract

In order to analyze the flow field

flame structure and emission patterns in the secondary zone of axial staged combustion of methane and ammonia fuels

a high-frequency particle image velocimetry (PIV)analysis and OH

-based self-luminous techniques were used to investigate the secondary flow field structure

reburning flame morphology and pollutant emission characteristics of the premixed secondary burner with a jet angle of 135° at a momentum flux ratio of 6 using different types of fuels under atmospheric pressure conditions. Results show that when the jet angle is 135°

the secondary flow field will form a large low-speed recirculation zone downstream of the jet outlet

which is conducive to stable combus

tion of fuels with slower flame propagation speed. When methane mixed with ammonia is used as the secondary fuel

the position of the reburning flame shifts upstream

resulting in a longer high temperature chemical residence time. At the beginning of ammonia-doped combustion

when the ammonia-doped ratio increases

the jet flame transforms from a continuous flame to a disintegrated flame. The reaction zone of the ammonia jet flame is elongated

leaving a heavy sufficient reaction distance to reduce emissions. Therefore

the emission gradually decreases in the detached flame form.

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references

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