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Co-firing bituminous coal in a W-shaped flame boiler with closed intermediate storage pulverization system
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Yong ZHANG1, Huajian WANG2, Yang WANG2, Chao LI3, Rongfu TANG3, Lei XIE2, Xiaohong LAN3, Yongsheng LAN4, Tianxiang ZUO3
Thermal Power Generation | 2025, 54(3) : 99 - 107
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Thermal Power Generation | 2025, 54(3): 99-107
• Thermal energy science research •
Co-firing bituminous coal in a W-shaped flame boiler with closed intermediate storage pulverization system
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Yong ZHANG1, Huajian WANG2, Yang WANG2, Chao LI3, Rongfu TANG3, Lei XIE2, Xiaohong LAN3, Yongsheng LAN4, Tianxiang ZUO3
Affiliations
  • 1.Anhui Ma’anshan Power Generation Co., Ltd., Ma’anshan 243021, China
  • 2.Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China
  • 3.Huaneng Luohuang Generation Co., Ltd., Chongqing 402283, China
  • 4.Huaneng Xindian Power Generation Co., Ltd., Zibo 255414, China
Published: 2025-03-25 doi: 10.19666/j.rlfd.202406122
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The W-shaped flame boiler with closed middle storage pulverizing system is designed to burn low volatile lean coal and anthracite. Blending coal with high proportion of bituminous coal is able to improve the adaptability of fuel and the flexibility of the boiler. It is necessary to solve the technical problems such as explosion prevention of the pulverizing system, anti-burning of pulverized coal pipes and prevention of serious slagging in the furnace. Therefore, an inert explosion-proof pulverizing technology, in which low temperature flue gas is used for temperature adjustment, is proposed. This method solves the problem of explosion prevention of coal pulverizing system effectively. By increasing the capacity of cooling air from primary fan to reduce the temperature of hot primary air conveying pulverized coal and the adaptability of the burners to blended bituminous, the safety of the primary air pipes and the burners will be guaranteed. With the optimization of refractory belt arrangement and combustion adjustment, this method not only controls the slagging, but also improves the performance of combustion in the furnace effectively. By these integrated technologies presented above, the goal of co-firing 70% bituminous coal safely and economically in the W-shaped flame boiler with closed ball mill medium storage pulverizing system is achieved.

W-shaped flame boiler  /  closed ball mill  /  intermediate storage pulverization system  /  co-firing blended bituminous coal with high proportion  /  explosion prevention of pulverization system  /  pulverized coal boiler
Yong ZHANG, Huajian WANG, Yang WANG, Chao LI, Rongfu TANG, Lei XIE, Xiaohong LAN, Yongsheng LAN, Tianxiang ZUO. Co-firing bituminous coal in a W-shaped flame boiler with closed intermediate storage pulverization system[J]. Thermal Power Generation, 2025 , 54 (3) : 99 -107 . DOI: 10.19666/j.rlfd.202406122
Funding
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  • National Key Research and Development Program(2020YFC1910000)
  • Science and Technology Project of China Huaneng Group Co., Ltd.(HNKJ22-HF48)
Appendix
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Year 2025 volume 54 Issue 3
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132
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Article Info
doi: 10.19666/j.rlfd.202406122
  • Receive Date：2024-06-23
  • Online Date：2026-03-06
  • Published：2025-03-25
Article Data
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History
  • Received：2024-06-23
Funding
National Key Research and Development Program(2020YFC1910000)
Science and Technology Project of China Huaneng Group Co., Ltd.(HNKJ22-HF48)
Affiliations
    1.Anhui Ma’anshan Power Generation Co., Ltd., Ma’anshan 243021, China
    2.Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China
    3.Huaneng Luohuang Generation Co., Ltd., Chongqing 402283, China
    4.Huaneng Xindian Power Generation Co., Ltd., Zibo 255414, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202406122
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表12种不同金属材料的力学参数
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Number of
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Number of
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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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