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Study on anticorrosion of waste heat boiler economizer fin tube of gas turbine generator unit in standby state
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Zhefeng YU1, Zhentao TAO2, Maoxian XU1, Fengping YAN1, Yonggang ZHOU2, Yue HUANG1, Hong ZHAO2
Thermal Power Generation | 2023, 52(11) : 186 - 192
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Thermal Power Generation | 2023, 52(11): 186-192
• Power generation technology forum •
Study on anticorrosion of waste heat boiler economizer fin tube of gas turbine generator unit in standby state
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Zhefeng YU1, Zhentao TAO2, Maoxian XU1, Fengping YAN1, Yonggang ZHOU2, Yue HUANG1, Hong ZHAO2
Affiliations
  • 1.Zhejiang Zheneng Changshan Natural Gas Power Generation Co., Ltd., Changshan 324000, China
  • 2.State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
Published: 2023-11-25 doi: 10.19666/j.rlfd.202301299
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During frequent long-term standby state of gas turbine generator unit, the surface of 08Al carbon steel of waste heat boiler economizer fin tube will have serious corrosion problems. In this paper, the macroscopic corrosion phenomenon and corrosion rate of 08Al carbon steel above the critical humidity were studied by the method of hanging piece and electrical resistance probe. The results show that the corrosion rate of 08Al carbon steel is the fastest in the first 5 days under the constant environment of 20 ℃ and relative humidity of 70%, and the corrosion depth reaches up to 0.85 μm, accounting for 47.7% of the total change in the whole process. However, the most obvious corrosion phenomenon, including the change of weight and the surface corrosion area, occurred from about the 19th to the 25th day. With the relative humidity gradually increasing from the critical humidity of 70% (ambient temperature 20 ℃), the corrosion evaluation indexes of 08Al carbon steel show a linear upward trend. Nitrogen filling maintenance strategy under long-term standby state was formulated, effectively alleviating the corrosion condition of economizer fin tube of waste heat boiler.

gas turbine generator unit  /  fin tube  /  08Al carbon steel  /  corrosion process  /  anticorrosion strategy
Zhefeng YU, Zhentao TAO, Maoxian XU, Fengping YAN, Yonggang ZHOU, Yue HUANG, Hong ZHAO. Study on anticorrosion of waste heat boiler economizer fin tube of gas turbine generator unit in standby state[J]. Thermal Power Generation, 2023 , 52 (11) : 186 -192 . DOI: 10.19666/j.rlfd.202301299
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  • Sience and Technology Project of Zhejiang Energy Group Co., Ltd.(ZNJK-2021-030)
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Year 2023 volume 52 Issue 11
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Article Info
doi: 10.19666/j.rlfd.202301299
  • Online Date：2026-01-26
  • Published：2023-11-25
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History
  • Revised：2023-01-25
Funding
Sience and Technology Project of Zhejiang Energy Group Co., Ltd.(ZNJK-2021-030)
Affiliations
    1.Zhejiang Zheneng Changshan Natural Gas Power Generation Co., Ltd., Changshan 324000, China
    2.State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202301299
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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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