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Numerical simulation of coal-ammonia co-combustion schemes at low load in a 300 MW tangentially-fired boiler
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Chenxi BAI, Jiaxing SONG, Zhijiang HAN, Yuehua LI, Xiang ZHANG
Thermal Power Generation | 2025, 54(8) : 142 - 151
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Thermal Power Generation | 2025, 54(8): 142-151
• Carbon neutral fuel coupled combustion and emission control •
Numerical simulation of coal-ammonia co-combustion schemes at low load in a 300 MW tangentially-fired boiler
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Chenxi BAI, Jiaxing SONG, Zhijiang HAN, Yuehua LI, Xiang ZHANG
Affiliations
  • Shanghai Boiler Works Co, Ltd, Shanghai 200245, China
Published: 2025-08-25 doi: 10.19666/j.rlfd.202505086
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A simulation study on a 300 MW tangentially-fired boiler with 20% ammonia doping at 60% load was carried out to analyze the combustion process of ammonia doping in pulverized coal boiler, and to seek for the best coal-ammonia co-combustion scheme to ensure the optimal combustion efficiency and the lowest pollutant emission. By adjusting the position of ammonia burners and the ratio of the separated over fire air, the temperature field of the flue gas in the furnace, the molar fraction distribution of the combustion components, as well as the combustion characteristics and the NOx emission level at the furnace outlet were systematically analyzed using numerical simulation. The comprehensive analysis shows that, the best coal-ammonia co-combustion solution is to place the ammonia burner on top layer (tertiary air) and the CD layer (secondary air) when the ratio of the separated over fire air is 33.5%. This scheme ensures the combustion efficiency and stability while controlling the NOx emission level comparable to that of the pure coal-fired condition, which provides a new way of thinking for large-scale coal-fired power plants to realize clean and efficient combustion.

ammonia co-firing  /  pulverized coal combustion  /  tangentially-firing boiler  /  NOx emission  /  numerical simulation
Chenxi BAI, Jiaxing SONG, Zhijiang HAN, Yuehua LI, Xiang ZHANG. Numerical simulation of coal-ammonia co-combustion schemes at low load in a 300 MW tangentially-fired boiler[J]. Thermal Power Generation, 2025 , 54 (8) : 142 -151 . DOI: 10.19666/j.rlfd.202505086
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  • National Key Research and Development Program(2023YFB4005700)
Appendix
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Year 2025 volume 54 Issue 8
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146
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Article Info
doi: 10.19666/j.rlfd.202505086
  • Receive Date：2025-05-15
  • Online Date：2026-03-05
  • Published：2025-08-25
Article Data
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  • Received：2025-05-15
Funding
National Key Research and Development Program(2023YFB4005700)
Affiliations
    Shanghai Boiler Works Co, Ltd, Shanghai 200245, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202505086
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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