Effect of co-firing hydrogen/ammonia on nitrogen oxides emissions from boilers

张波; 张国军; 贾子秀; 王志超; 李宗泰; 晋中华; 房凡

doi:10.19666/j.rlfd.202505075

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Effect of co-firing hydrogen/ammonia on nitrogen oxides emissions from boilers

Thermal Power Generation Vol. 54, Issue 8, Pages: 124-130(2025)

更新时间：2026-08-11

- Effect of co-firing hydrogen/ammonia on nitrogen oxides emissions from boilers
- 作者机构：
  
  1. 西安热工研究院有限公司
  2. 北京中润汉泰科技有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202505075
  CLC： X773;TK229.63
- Published：2025
- 稿件说明：
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[1]张波,张国军,贾子秀,等.掺烧氢/氨对煤粉锅炉NO_x排放的影响[J],2025,54(08):124-130.
[1]张波,张国军,贾子秀,等.掺烧氢/氨对煤粉锅炉NO_x排放的影响[J],2025,54(08):124-130. DOI： 10.19666/j.rlfd.202505075.

DOI：10.19666/j.rlfd.202505075.

摘要

分析某600 MW燃煤机组掺烧氢/氨对NOx排放的影响。根据煤质分析及试验结果修正反应动力学文件，根据流体动力学(CFD)模拟结果构建完全搅拌全混流反应器(perfectly stirred reactor

psr)反应器网络，结合采用化学反应动力学分析方法，对锅炉在一次风、周界风、二次风、二次风后4个位置的5个方案，分别掺烧氢/氨后的NOx排放进行分析，结果表明：对于所研究的锅炉，氢气掺烧位置位于二次风方案，掺氢20%工况，NO降低32.4%、未燃尽碳排放量与纯煤工况相当；氨气掺烧位置位于二次风后方案，NO排放量略高于纯煤工况，未燃尽碳排放量显著减小。上述2个方案是该锅炉以NOx排放作为评价指标的掺氢/氨燃烧的推荐方案。该方法和结论可为掺烧氢/氨技术的工程实施提供设计依据。

Abstract

The effect of co-firing hydrogen/ammonia on nitrogen oxides emissions from boilers is investigated. The reaction kinetics file is modified based on coal quality analysis and experimental results. A psr reactor network based on CFD simulation results is constructed according to the fluid dynamics(CFD) simulation results. Combing with the chemical reaction kinetics analysis method

the NOx emissions after burning hydrogen/ammonia at four positions of primary air

peripheral air

secondary air and post secondary air in five schemes are analyzed. The results show that

for the researched boiler

when the hydrogen co-firing position is located in the secondary air scheme

and the hydrogen mixing ratio is 20%

the NO emission reduces by 32.4%

and the emission concentration of unburned carbon does not change much compared to the pure coal condition. When the ammonia co-firing position is located behind the secondary air

the NO emission mass concentration is slightly higher than that under the pure coal condition

and the emission mass concentration of unburned carbon reduces significantly. The above two schemes are recommended for co-firing hydrogen/ammonia in the coal-fired boiler

with nitrogen oxide emissions as the evaluation index. This method and conclusion provides a theoretical basis for the engineering implementation of hydrogen/ammonia co-firing technology.

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references

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