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Vibration safety assessment for central full partition wall in a 700 MW high-efficiency ultra-supercritical CFB boiler
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Zhuo LYU1, 2, Jiayi LU1, 2, Qigang DENG1, 2, Xu ZHOU1, 2, Binbin QIU1, 2, Chenhao DONG3, Kailin JIAN3, Leming CHENG4
Thermal Power Generation | 2025, 54(7) : 54 - 62
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Thermal Power Generation | 2025, 54(7): 54-62
• Special topic on “ultra supercritical circulating fluidized bed power generation technology” •
Vibration safety assessment for central full partition wall in a 700 MW high-efficiency ultra-supercritical CFB boiler
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Zhuo LYU1, 2, Jiayi LU1, 2, Qigang DENG1, 2, Xu ZHOU1, 2, Binbin QIU1, 2, Chenhao DONG3, Kailin JIAN3, Leming CHENG4
Affiliations
  • 1.Clean Combustion and Flue Gas Purification Key Laboratory of Sichuan Province, Chengdu 611731, China
  • 2.Dongfang Boiler Co., Ltd., Zigong 643001, China
  • 3.College of Aerospace Engineering, Chongqing University, Chongqing 400044, China
  • 4.College of Energy Engineering, Zhejiang University, Hangzhou 310027, China
Published: 2025-07-25 doi: 10.19666/j.rlfd.202410262
Outline
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In order to evaluate the vibration safety of the central full partition wall of the world’s first lignite-fired 700 MW high-efficiency ultra-supercritical CFB boiler, a three-dimensional non-constant hydrodynamic model of the boiler is constructed, and the distribution of the gas-solid flow field within the furnace chamber is simulated. Furthermore, the pressure distribution and its fluctuation law of the gas-solid flow acting on the surface of the central full diaphragm wall within the furnace are solved. The vibration signals of the furnace wall of a supercritical 350 MW CFB boiler with a similar furnace structure are measured and analyzed spectrally to assess the frequency of pressure fluctuations in the furnace. The dynamic stress on the central diaphragm wall under fluctuating pressure in the furnace is calculated using the pressure fluctuations in the furnace obtained from simulation calculations and experimental tests as the excitation. The results demonstrate that the dynamic stress level of the central full diaphragm wall is below the permissible stress of the material, indicating that the central full diaphragm wall is safe.

ultra-supercritical  /  CFB boiler  /  full partition wall  /  vibration safety
Zhuo LYU, Jiayi LU, Qigang DENG, Xu ZHOU, Binbin QIU, Chenhao DONG, Kailin JIAN, Leming CHENG. Vibration safety assessment for central full partition wall in a 700 MW high-efficiency ultra-supercritical CFB boiler[J]. Thermal Power Generation, 2025 , 54 (7) : 54 -62 . DOI: 10.19666/j.rlfd.202410262
Funding
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  • Science and Technology Program of Yunnan Province(202403AA080020)
Appendix
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Year 2025 volume 54 Issue 7
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Article Info
doi: 10.19666/j.rlfd.202410262
  • Online Date：2026-03-06
  • Published：2025-07-25
Article Data
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History
  • Revised：2024-12-12
Funding
Science and Technology Program of Yunnan Province(202403AA080020)
Affiliations
    1.Clean Combustion and Flue Gas Purification Key Laboratory of Sichuan Province, Chengdu 611731, China
    2.Dongfang Boiler Co., Ltd., Zigong 643001, China
    3.College of Aerospace Engineering, Chongqing University, Chongqing 400044, China
    4.College of Energy Engineering, Zhejiang University, Hangzhou 310027, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202410262
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表12种不同金属材料的力学参数
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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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