Economizer water-wall damages initiated by feedwater impurities
2014
Аутори
Vidojković, SonjaOnjia, Antonije
Devečerski, Aleksandar
Grahovac, Nebojša N.
Nastasović, Aleksandra
Чланак у часопису (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
The main causes of efficiency loss in thermal power plants are boiler tube failures that diminish unit reliability and availability, and raise the cost of the electric energy. For that reason, the regular examination of boiler tubes is indispensable measure for prevention of future malfunctions of power units. The microscopic examination of economizer's inner wall microstructure, the analysis of chemical composition of deposit using X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) have been performed in a subcritical power plant. Stress corrosion cracking, pitting corrosion, destroyed protective magnetite layer, presence of magnetite and hematite in deposit and corrosive impurities within the cracks have indicated the effect of inadequate quality of feedwater that cannot entirely ensure reliable operation of the boiler. It may be stated that maintenance of present boiler does not provide its reliable operation. The extensive chemical con...trol of water/steam cycle was recommended.
Кључне речи:
boiler tube / deposition / corrosion / feedwater impuritiesИзвор:
Hemijska industrija, 2014, 68, 5, 559-563Издавач:
- Savez hemijskih inženjera, Beograd
Финансирање / пројекти:
- Нове технологије за мониторинг и заштиту животног окружења од штетних хемијских супстанци и радијационог оптерећења (RS-43009)
- Синтеза, процесирање и карактеризација наноструктурних материјала за примену у области енергије, механичког инжењерства, заштите животне стредине и биомедицине (RS-45012)
DOI: 10.2298/HEMIND130715082V
ISSN: 0367-598X
WoS: 000346394000005
Scopus: 2-s2.0-84922682555
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Vidojković, Sonja AU - Onjia, Antonije AU - Devečerski, Aleksandar AU - Grahovac, Nebojša N. AU - Nastasović, Aleksandra PY - 2014 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2720 AB - The main causes of efficiency loss in thermal power plants are boiler tube failures that diminish unit reliability and availability, and raise the cost of the electric energy. For that reason, the regular examination of boiler tubes is indispensable measure for prevention of future malfunctions of power units. The microscopic examination of economizer's inner wall microstructure, the analysis of chemical composition of deposit using X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) have been performed in a subcritical power plant. Stress corrosion cracking, pitting corrosion, destroyed protective magnetite layer, presence of magnetite and hematite in deposit and corrosive impurities within the cracks have indicated the effect of inadequate quality of feedwater that cannot entirely ensure reliable operation of the boiler. It may be stated that maintenance of present boiler does not provide its reliable operation. The extensive chemical control of water/steam cycle was recommended. PB - Savez hemijskih inženjera, Beograd T2 - Hemijska industrija T1 - Economizer water-wall damages initiated by feedwater impurities EP - 563 IS - 5 SP - 559 VL - 68 DO - 10.2298/HEMIND130715082V ER -
@article{ author = "Vidojković, Sonja and Onjia, Antonije and Devečerski, Aleksandar and Grahovac, Nebojša N. and Nastasović, Aleksandra", year = "2014", abstract = "The main causes of efficiency loss in thermal power plants are boiler tube failures that diminish unit reliability and availability, and raise the cost of the electric energy. For that reason, the regular examination of boiler tubes is indispensable measure for prevention of future malfunctions of power units. The microscopic examination of economizer's inner wall microstructure, the analysis of chemical composition of deposit using X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) have been performed in a subcritical power plant. Stress corrosion cracking, pitting corrosion, destroyed protective magnetite layer, presence of magnetite and hematite in deposit and corrosive impurities within the cracks have indicated the effect of inadequate quality of feedwater that cannot entirely ensure reliable operation of the boiler. It may be stated that maintenance of present boiler does not provide its reliable operation. The extensive chemical control of water/steam cycle was recommended.", publisher = "Savez hemijskih inženjera, Beograd", journal = "Hemijska industrija", title = "Economizer water-wall damages initiated by feedwater impurities", pages = "563-559", number = "5", volume = "68", doi = "10.2298/HEMIND130715082V" }
Vidojković, S., Onjia, A., Devečerski, A., Grahovac, N. N.,& Nastasović, A.. (2014). Economizer water-wall damages initiated by feedwater impurities. in Hemijska industrija Savez hemijskih inženjera, Beograd., 68(5), 559-563. https://doi.org/10.2298/HEMIND130715082V
Vidojković S, Onjia A, Devečerski A, Grahovac NN, Nastasović A. Economizer water-wall damages initiated by feedwater impurities. in Hemijska industrija. 2014;68(5):559-563. doi:10.2298/HEMIND130715082V .
Vidojković, Sonja, Onjia, Antonije, Devečerski, Aleksandar, Grahovac, Nebojša N., Nastasović, Aleksandra, "Economizer water-wall damages initiated by feedwater impurities" in Hemijska industrija, 68, no. 5 (2014):559-563, https://doi.org/10.2298/HEMIND130715082V . .