A tool for on-line control of high-temperature corrosion hazard in steam boilers

• Autorzy: Hardy T. , Kakietek S. , Janda T.
• Języki publikacji: EN

Abstrakty

EN

High temperature (low oxygen) corrosion processes in coal-fired boilers are intensified primarily by the use of low-emission (NOx) combustion techniques, that are associated with production of a reducing gas atmosphere near evaporator walls. For over 10 years a diagnostic system for corrosion risks determination was developed, based on continuous measurement of the composition of the flue gas in the boundary layer and artificial intelligence techniques. This paper presents the experience with the implementation of such a diagnostic system on the OP-230 hard coal fired boiler to identify the corrosion hazard of one of the evaporator walls. The obtained results indicate that it is possible to significantly simplify the measuring system by reducing the number of measurement points on the boiler wall which reduces costs of installation and exploitation. This is possible through the use of neural networks to visualize the measurement results. Comparisons of the O2 and CO concentration maps in the boundary layer obtained from measurements at 26 measurement points and results from the Rachel software based on neural network performance and 5-point measurement showed a high compatibility of obtained results. At present, on-line electrical resistance corrosion probes are included in the monitoring system to allow an assessment of the actual corrosion rate of entire evaporator tubes.

Słowa kluczowe

EN

high-temperature corrosion; steam boilers; on-line monitoring; neural networks

• Wydawca: Komitet Termodynamiki i Spalania PAN
• Czasopismo: Archivum Combustionis
• Rocznik: 2017
• Tom: Vol. 37 nr 2
• Strony: 107--118
• Opis fizyczny: Bibliogr. 29 poz., rys., tab.

Twórcy

autor

Hardy T.

• Politechnika Wrocławska, Wyb.Wyspiańskiego 27, 50-370 Wrocław, Polska; tel.: [phone]; fax: [phone]

autor

Kakietek S.

• Instytut Energetyki, Augustówka 36, 02-981 Warszawa, Polska

autor

Janda T.

• EDF Polska, Ciepłownicza 1, 31-587 Kraków, Polska

Bibliografia

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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).