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Research and application of wide load opposed firing technology for high-alkali coal fired boilers
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Jian DENG1, 2, Shenming RAN1, 2, Zhangning YANG1, 2, Xian FAN3, Dujia WANG1, 2, Yangzhou GUO4, Yanfei LI3, Weicheng LI1, 2, Guodong GAO3, Shaocheng PAN1, 2, Xiuchang ZHANG1, 2
Thermal Power Generation | 2024, 53(1) : 73 - 81
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Thermal Power Generation | 2024, 53(1): 73-81
• High proportion combustion technology for high-alkali coal •
Research and application of wide load opposed firing technology for high-alkali coal fired boilers
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Jian DENG1, 2, Shenming RAN1, 2, Zhangning YANG1, 2, Xian FAN3, Dujia WANG1, 2, Yangzhou GUO4, Yanfei LI3, Weicheng LI1, 2, Guodong GAO3, Shaocheng PAN1, 2, Xiuchang ZHANG1, 2
Affiliations
  • 1.Sichuan Province Key Laboratory of Combustion and Flue Gas Cleaning, Chengdu 611731, China
  • 2.Dongfang Boiler Group Co., Ltd., Dongfang Electric Corporation, Zigong 643001, China
  • 3.Huadian Xinjiang Zhundong Wucaiwan Power Generation Co., Ltd., Changji 831700, China
  • 4.Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China
Published: 2024-01-25 doi: 10.19666/j.rlfd.202309147
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Xinjiang high-alkali coal is a cost-effective power coal，but when it is used in large proportions, boiler equipment is prone to severe slagging problems. The design principles of the combustion system for boilers using Zhundong coal are inconsistent with conventional technical measures to improve low-load stable combustion performance. To solve this problem, based on the mechanism of stable combustion of pulverized coal, measures such as optimized layout of tiny oil ignition burners, interlaced arrangement of middle layer burners, online adjustable coal powder concentration and burner design optimization have been studied. The technology was applied in a 350 MW unit's deep peak regulation retrofit project using Zhundong high-alkali coal as fuel, and achieved a stable combustion load of less than 18% rated condition without oil injection.

high-alkali coal  /  opposed combustion  /  ultra low load  /  stable combustion technology  /  anti slagging  /  engineering application
Jian DENG, Shenming RAN, Zhangning YANG, Xian FAN, Dujia WANG, Yangzhou GUO, Yanfei LI, Weicheng LI, Guodong GAO, Shaocheng PAN, Xiuchang ZHANG. Research and application of wide load opposed firing technology for high-alkali coal fired boilers[J]. Thermal Power Generation, 2024 , 53 (1) : 73 -81 . DOI: 10.19666/j.rlfd.202309147
Funding
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  • National Key Research and Development Program(2022YFB4100800)
Appendix
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Year 2024 volume 53 Issue 1
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Article Info
doi: 10.19666/j.rlfd.202309147
  • Receive Date：2023-09-13
  • Online Date：2025-12-25
  • Published：2024-01-25
Article Data
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History
  • Received：2023-09-13
Funding
National Key Research and Development Program(2022YFB4100800)
Affiliations
    1.Sichuan Province Key Laboratory of Combustion and Flue Gas Cleaning, Chengdu 611731, China
    2.Dongfang Boiler Group Co., Ltd., Dongfang Electric Corporation, Zigong 643001, China
    3.Huadian Xinjiang Zhundong Wucaiwan Power Generation Co., Ltd., Changji 831700, China
    4.Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202309147
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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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