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Enhancement of ammonia combustion characteristics by coupling methane with plasma
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Shilong ZHONG1, 2, Qifu LIN2, Dianwu WU2, Yawei SONG2, Chengzhou LIU2, Chen WU2, 3, Longwei CHEN2, Zhenyang LI2, Weiye CHEN2, Hansheng FENG2, 4, Guangnan LUO2, 4
Thermal Power Generation | 2025, 54(8) : 131 - 141
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Thermal Power Generation | 2025, 54(8): 131-141
• Carbon neutral fuel coupled combustion and emission control •
Enhancement of ammonia combustion characteristics by coupling methane with plasma
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Shilong ZHONG1, 2, Qifu LIN2, Dianwu WU2, Yawei SONG2, Chengzhou LIU2, Chen WU2, 3, Longwei CHEN2, Zhenyang LI2, Weiye CHEN2, Hansheng FENG2, 4, Guangnan LUO2, 4
Affiliations
  • 1.School of Energy and Environment, Anhui University of Technology, Maanshan 243002, China
  • 2.Institute of Energy, Hefei Comprehensive National Science Center (Anhui Provincial Energy Laboratory), Hefei 230031, China
  • 3.School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China
  • 4.Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
Published: 2025-08-25 doi: 10.19666/j.rlfd.202505093
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To tackle the challenges associated with the poor combustion performance of ammonia fuels and the high NOx emissions in exhaust gases, experimental research on enhancing ammonia combustion through the use of a swirling burner combined with a gliding arc plasma generator was carried out. The effects of various combustion enhancement methods, including methane-assisted combustion, plasma-assisted combustion, and plasma-coupled methane-assisted combustion, on the combustion characteristics of NH3 swirling flames and the generation of NO were investigated. The experimental results indicated that, compared with the methane-assisted combustion, both plasma-coupled methane-assisted combustion and plasma-assisted combustion significantly enhanced the stability of ammonia combustion. This improvement was evidenced by a substantial expansion of the stable combustion limit range of the NH3 swirling flame, enabling normal combustion within an NH3/Air equivalence ratio range of 0~5.0. In comparison to single methane-assisted or plasma-assisted combustion, plasma-coupled methane-assisted combustion (with a plasma power of 0.8 kW and a methane flow rate of 1 L/min) significantly enhanced the active species Hα and OH generated by the discharge, thereby strengthening the chemical effects in plasma-assisted combustion. Under these conditions, the NO emission mass concentration in the exhaust gases rapidly decreased from over 7 000 mg/m3 to approximately 100 mg/m3 as the NH3/Air equivalence ratio was increased from 0.6 to 0.8. Furthermore, the gas temperature under these conditions was only slightly lower than that observed in pure plasma-assisted combustion, where the flame temperature of ammonia combustion could reach up to approximately 2 030 K.

ammonia stable combustion  /  plasma-assisted combustion  /  combustion stability  /  spectral characteristics  /  exhaust emission
Shilong ZHONG, Qifu LIN, Dianwu WU, Yawei SONG, Chengzhou LIU, Chen WU, Longwei CHEN, Zhenyang LI, Weiye CHEN, Hansheng FENG, Guangnan LUO. Enhancement of ammonia combustion characteristics by coupling methane with plasma[J]. Thermal Power Generation, 2025 , 54 (8) : 131 -141 . DOI: 10.19666/j.rlfd.202505093
Funding
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  • National Key Research and Development Program(2023YFB4005705; 2023YFB4005702-03)
  • National Natural Science Foundation of China(52207151)
  • Self-initiated Project of Institute of Energy, Hefei Comprehensive National Science Center (Anhui Provincial Energy Laboratory)(22KZZ525; 23KZS402; 22KZS301; 22KZS304)
Appendix
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Year 2025 volume 54 Issue 8
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138
62
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Article Info
doi: 10.19666/j.rlfd.202505093
  • Receive Date：2025-06-06
  • Online Date：2026-03-05
  • Published：2025-08-25
Article Data
Affiliations
History
  • Received：2025-06-06
Funding
National Key Research and Development Program(2023YFB4005705; 2023YFB4005702-03)
National Natural Science Foundation of China(52207151)
Self-initiated Project of Institute of Energy, Hefei Comprehensive National Science Center (Anhui Provincial Energy Laboratory)(22KZZ525; 23KZS402; 22KZS301; 22KZS304)
Affiliations
    1.School of Energy and Environment, Anhui University of Technology, Maanshan 243002, China
    2.Institute of Energy, Hefei Comprehensive National Science Center (Anhui Provincial Energy Laboratory), Hefei 230031, China
    3.School of Earth and Environment, Anhui University of Science and Technology, Huainan 232001, China
    4.Institute of Plasma Physics, Hefei Institutes of Physical Science, Chinese Academy of Sciences, Hefei 230031, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202505093
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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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