Numerical simulation of coal-ammonia co-combustion schemes at low load in a 300 MW tangentially-fired boiler

doi:10.19666/j.rlfd.202505086

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Numerical simulation of coal-ammonia co-combustion schemes at low load in a 300 MW tangentially-fired boiler

更新时间：2025-11-03

- Numerical simulation of coal-ammonia co-combustion schemes at low load in a 300 MW tangentially-fired boiler
- Thermal Power Generation Issue 8, Pages: 142-151(2025)
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- DOI：10.19666/j.rlfd.202505086
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- Published：2025
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Numerical simulation of coal-ammonia co-combustion schemes at low load in a 300 MW tangentially-fired boiler[J]. Thermal power generation, 2025, (8): 142-151.
DOI：

Numerical simulation of coal-ammonia co-combustion schemes at low load in a 300 MW tangentially-fired boiler[J]. Thermal power generation, 2025, (8): 142-151. DOI： 10.19666/j.rlfd.202505086.

摘要

对某300 MW四角切圆锅炉60%负荷工况掺烧20%氨气进行模拟研究，分析煤粉锅炉掺氨燃烧过程，寻求最佳的煤氨共燃方案以保证最优燃烧效率以及最低的污染物排放。采用数值模拟方法，通过调整氨气燃烧器的位置和燃尽风比例，系统分析了炉内烟气温度场、燃烧组分摩尔分数分布、燃烧特性以及炉膛出口NO_x排放水平。综合分析表明，在燃尽风比例为33.5%时，将氨气燃烧器布置在顶层三次风与CD层二次风的位置为最佳煤氨共燃方案。该方案在保证燃烧效率与稳定性的同时，可将NO_x排放水平控制在与纯燃煤工况相当的NO_x排放水平，这为大型燃煤电厂实现清洁高效燃烧提供了新的思路。

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