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Chlorine Corrosion in a Low-Power Boiler Fired with Agricultural Biomass

Author

Listed:
  • Danuta Król

    (Faculty of Energy and Environmental Engineering, Silesian University of Technology, 14-100 Gliwice, Poland)

  • Przemysław Motyl

    (Faculty of Mechanical Engineering, University of Technology and Humanities in Radom, 26-600 Radom, Poland)

  • Sławomir Poskrobko

    (Faculty of Civil Engineering and Environmental Sciences, Białystok University of Technology, 15-351 Białystok, Poland)

Abstract

The selection of appropriate heat-resistant materials which are at the same time resistant to atmospheres rich in chlorine and its compounds is one of the most important current construction problems in steel boiler elements when using biomass fuels of agricultural origin. In the research presented here, an area was identified in the furnace of a 10 kW boiler where there was a potential risk of chlorine corrosion. This zone was determined based on numerical analysis of the combustion process; it is the zone with the highest temperatures and where the gas atmosphere conducive to the formation of chlorine corrosion centers. Subsequently, tests were carried out in the process environment of the combustion chamber of a 10 kW boiler (the fuel was barley straw) by placing samples of eight construction materials in a numerically-designated zone. These included samples of steel (coal boiler St41K, heat-resistant H25T and H24JS, and heat-resistant valve 50H21G9N4) as well as intermetallic materials based on phases (FeAl, Fe 3 Al, NiAl, and Ni 3 Al). The samples remained in the atmosphere of the boiler furnace for 1152 h at a temperature of 750–900 °C. After this time, the surfaces of the samples were subjected to SEM microscopy and scanning analysis. The results showed that the St41K boiler steel was not suitable for operation under the assumed conditions, and that a thick layer of complex corrosion products was visible on its surface. The least amount of corrosion damage was observed for the samples of 50H21G9N4 steel and intermetallic materials.

Suggested Citation

  • Danuta Król & Przemysław Motyl & Sławomir Poskrobko, 2022. "Chlorine Corrosion in a Low-Power Boiler Fired with Agricultural Biomass," Energies, MDPI, vol. 15(1), pages 1-19, January.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:1:p:382-:d:718360
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    Citations

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    Cited by:

    1. Izabella Maj, 2022. "Significance and Challenges of Poultry Litter and Cattle Manure as Sustainable Fuels: A Review," Energies, MDPI, vol. 15(23), pages 1-17, November.
    2. Izabella Maj & Krzysztof Matus, 2023. "Aluminosilicate Clay Minerals: Kaolin, Bentonite, and Halloysite as Fuel Additives for Thermal Conversion of Biomass and Waste," Energies, MDPI, vol. 16(11), pages 1-17, May.
    3. Yinan Qiu & Yan Yang & Na Yang & Lige Tong & Shaowu Yin & Lang Yu & Li Wang, 2022. "Corrosion of Iron Covered with Iron Oxide Film by Chlorine and Hydrogen Chloride Gases: A Molecular Dynamics Simulation Study Using the ReaxFF," Energies, MDPI, vol. 15(12), pages 1-11, June.

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