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Research on optimal operation condition of feed water in (ultra) supercritical units
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Long MENG1, Junwan LI1, Guojun LONG1, Liang WANG2, Junnan CHEN3, Xiaolin ZHAO2, Lan JIA3, Ningfei WANG1
Thermal Power Generation | 2023, 52(1) : 83 - 88
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Thermal Power Generation | 2023, 52(1): 83-88
• Thermal energy science research •
Research on optimal operation condition of feed water in (ultra) supercritical units
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Long MENG1, Junwan LI1, Guojun LONG1, Liang WANG2, Junnan CHEN3, Xiaolin ZHAO2, Lan JIA3, Ningfei WANG1
Affiliations
  • 1.Xi'an Thermal Power Research Institute Co., Ltd., Xi'an 710032, China
  • 2.Huadian Suzhou Power Generation Co., Ltd., Suzhou 234101, China
  • 3.Guoneng Ningdong No.1 Power Generation Co., Ltd., Lingwu 750408, China
Published: 2023-01-25 doi: 10.19666/j.rlfd.202205087
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With high power generation efficiency and low carbon emission, (ultra) supercritical unit is the main type in China's development of thermal power units. Optimization on feed water operating condition of the (ultra) supercritical unit is of great guiding significance. The optimal control indexes of different feed water operating conditions of (ultra) supercritical units are investigated by in-situ sampling test, and the influence of centralized sampling on feed water quality is researched. Moreover, the intelligent control system for feed water operating condition is developed. The results show that, the optimal target value of feed water conductivity is 6.7 μS/cm under AVT(O) condition, the optimal target value of feed water dissolved oxygen is 15 μg/L and the optimal target value of feed water conductivity is 3.0 μS/cm under OT condition. Long sampling pipeline of feed water will cause the deposition of iron corrosion products, and interfere with the judgment of unit corrosion. The chromates produced by adding oxygen to feed water is only related to the oxidation of the sampling tube and has nothing to do with the water vapor system.

feed water  /  in-situ sampling  /  AVT(O)  /  OT
Long MENG, Junwan LI, Guojun LONG, Liang WANG, Junnan CHEN, Xiaolin ZHAO, Lan JIA, Ningfei WANG. Research on optimal operation condition of feed water in (ultra) supercritical units[J]. Thermal Power Generation, 2023 , 52 (1) : 83 -88 . DOI: 10.19666/j.rlfd.202205087
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Year 2023 volume 52 Issue 1
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Article Info
doi: 10.19666/j.rlfd.202205087
  • Receive Date：2022-05-12
  • Online Date：2026-01-23
  • Published：2023-01-25
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  • Received：2022-05-12
Affiliations
    1.Xi'an Thermal Power Research Institute Co., Ltd., Xi'an 710032, China
    2.Huadian Suzhou Power Generation Co., Ltd., Suzhou 234101, China
    3.Guoneng Ningdong No.1 Power Generation Co., Ltd., Lingwu 750408, China
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https://castjournals.cast.org.cn/joweb/rlfd/EN/10.19666/j.rlfd.202205087
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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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