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Study on anti-coking and corrosion-resistant of nano-high-entropy ceramic coating on an ultra supercritical 1 000 MW unit boiler
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Jun MA1, Guoshan ZHANG1, Xianghu GAO2, Changhu GE1, Xiaojun YAO1, Ming LI1, Zhongwei LU2, Shijie ZHAO2, Baohua LIU2, Meng DONG3, Haimin JI4
Thermal Power Generation | 2024, 53(5) : 28 - 36
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Thermal Power Generation | 2024, 53(5): 28-36
• Power plant chemistry and materials research •
Study on anti-coking and corrosion-resistant of nano-high-entropy ceramic coating on an ultra supercritical 1 000 MW unit boiler
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Jun MA1, Guoshan ZHANG1, Xianghu GAO2, Changhu GE1, Xiaojun YAO1, Ming LI1, Zhongwei LU2, Shijie ZHAO2, Baohua LIU2, Meng DONG3, Haimin JI4
Affiliations
  • 1.Gansu Power Investment Changle Power Generation Co., Ltd., Jiuquan 736100, China
  • 2.Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
  • 3.Dongfang Boiler Co., Ltd., Dongfang Electric Corporation, Chengdu 611731, China
  • 4.Xi’an Thermal Power Research Institute Co., Ltd., Xi’an 710054, China
Published: 2024-05-25 doi: 10.19666/j.rlfd.202401003
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To solve the problems of fouling, slagging, and high-temperature corrosion in an ultra supercritical 1 000 MW unit boiler fueled by Zhundong coal, engineering verification test of nano-high-entropy ceramic coating in separated over fire air (SOFA) area of the boiler rear water wall was carried out, based on the coal characteristics, slagging condition and corrosion type of the boiler. Several methods such as macrographic check, scanning electron microscope (SEM), X-ray diffraction (XRD), Raman spectrum, friction coefficient and surface energy test were applied to observe the change of nano-high-entropy ceramic coating before and after experiments, thus to reveal the possible slag resistance and corrosion resistance mechanisms of nano-high-entropy ceramic coating. The results show that, the coating remained intact after 11 months’ boiler operation, with no obvious slagging and corrosion pits on the surface and no significantly thinning of the pipe wall. Nano-high-entropy ceramic coating can better solve the problems of fouling, slagging and high-temperature corrosion on the boiler water wall, which provides a guarantee for safe operation of the boiler fueled by Zhundong coal.

nano-high-entropy ceramic coating  /  boiler  /  water wall  /  anti-fouling and anti-slagging  /  corrosion resistance
Jun MA, Guoshan ZHANG, Xianghu GAO, Changhu GE, Xiaojun YAO, Ming LI, Zhongwei LU, Shijie ZHAO, Baohua LIU, Meng DONG, Haimin JI. Study on anti-coking and corrosion-resistant of nano-high-entropy ceramic coating on an ultra supercritical 1 000 MW unit boiler[J]. Thermal Power Generation, 2024 , 53 (5) : 28 -36 . DOI: 10.19666/j.rlfd.202401003
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  • Strategic Priority Research Program of Chinese Academy of Sciences(XDA29020402)
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Year 2024 volume 53 Issue 5
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Article Info
doi: 10.19666/j.rlfd.202401003
  • Receive Date：2024-01-12
  • Online Date：2026-01-07
  • Published：2024-05-25
Article Data
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History
  • Received：2024-01-12
Funding
Strategic Priority Research Program of Chinese Academy of Sciences(XDA29020402)
Affiliations
    1.Gansu Power Investment Changle Power Generation Co., Ltd., Jiuquan 736100, China
    2.Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
    3.Dongfang Boiler Co., Ltd., Dongfang Electric Corporation, Chengdu 611731, 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.202401003
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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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