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An approach for estimation of water wall degradation within pulverized-coal boilers

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  • Badur, Janusz
  • Ziółkowski, Paweł
  • Sławiński, Daniel
  • Kornet, Sebastian

Abstract

The main aim of this paper is to estimate the lifetime of water walls of pulverized-coal boilers at nominal conditions as well as after degradation of water tubes. An approach for a pulverized-coal chamber degradation process has been formulated based on operational and experimental data. This model was formulated using on-line state monitoring of a pulverized coal burner with aim of preventing the fireplace screens from high degradation and reducing large amounts of coal in the ashes. The rate of metal loss in the pipe wall from the fireplace was defined by a closure comprising of two parts. The first part describes degradation induced by impact of un-burned carbon, and the second part describes degradation caused by stress corrosion. In this paper, high-temperature creep in the pipe of the evaporator working in the powder-fired boiler is modelled and calculated. It has been shown that the lifetime of the element under consideration is essentially shortened by the influence of oxide growth on the steam side, an increase in metal temperature and erosion–corrosion wear on the flue gas side.

Suggested Citation

  • Badur, Janusz & Ziółkowski, Paweł & Sławiński, Daniel & Kornet, Sebastian, 2015. "An approach for estimation of water wall degradation within pulverized-coal boilers," Energy, Elsevier, vol. 92(P1), pages 142-152.
    • Handle: RePEc:eee:energy:v:92:y:2015:i:p1:p:142-152
    DOI: 10.1016/j.energy.2015.04.061
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    Cited by:

    1. Paweł Ziółkowski & Marta Drosińska-Komor & Jerzy Głuch & Łukasz Breńkacz, 2023. "Review of Methods for Diagnosing the Degradation Process in Power Units Cooperating with Renewable Energy Sources Using Artificial Intelligence," Energies, MDPI, vol. 16(17), pages 1-28, August.
    2. Paweł Ziółkowski & Stanisław Głuch & Piotr Józef Ziółkowski & Janusz Badur, 2022. "Compact High Efficiency and Zero-Emission Gas-Fired Power Plant with Oxy-Combustion and Carbon Capture," Energies, MDPI, vol. 15(7), pages 1-39, April.
    3. Madejski, Paweł & Żymełka, Piotr, 2020. "Calculation methods of steam boiler operation factors under varying operating conditions with the use of computational thermodynamic modeling," Energy, Elsevier, vol. 197(C).
    4. Kantorek, Marcin & Jesionek, Krzysztof & Polesek-Karczewska, Sylwia & Ziółkowski, Paweł & Stajnke, Michał & Badur, Janusz, 2021. "Thermal utilization of meat-and-bone meal using the rotary kiln pyrolyzer and the fluidized bed boiler – The performance of pilot-scale installation," Renewable Energy, Elsevier, vol. 164(C), pages 1447-1456.
    5. Badur, Janusz & Lemański, Marcin & Kowalczyk, Tomasz & Ziółkowski, Paweł & Kornet, Sebastian, 2018. "Zero-dimensional robust model of an SOFC with internal reforming for hybrid energy cycles," Energy, Elsevier, vol. 158(C), pages 128-138.
    6. Badur, Janusz & Bryk, Mateusz, 2019. "Accelerated start-up of the steam turbine by means of controlled cooling steam injection," Energy, Elsevier, vol. 173(C), pages 1242-1255.

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