Low-temperature corrosion in large-scale biomass boilers

Farzad Jafarihonar; Emil Vainio; Leena Hupa; Mikko Hupa

doi:10.1038/s41529-025-00640-4

Low-temperature corrosion in large-scale biomass boilers

Farzad Jafarihonar
, Emil Vainio^*
, Leena Hupa
, Mikko Hupa

^*Corresponding author for this work

Laboratory of Molecular Science and Engineering

Research output: Contribution to journal › Review Article or Literature Review › peer-review

3 Citations (Scopus)

15 Downloads (Pure)

Abstract

The shift toward biomass fuels for heat and power generation has introduced a range of new challenges for power plant technology, in particular large-scale boilers. One major challenge is the corrosion of preheaters and flue gas cleaning equipment, commonly known as low-temperature corrosion. Observations over recent decades show that this form of corrosion aligns more closely with chlorine chemistry than with sulfur chemistry. This review provides an up-to-date survey of the existing literature, with a particular focus on hygroscopic chloride salts that deliquesce and cause corrosion on cold-end surfaces.

Original language	English
Article number	108
Journal	npj Materials Degradation
Volume	9
Issue number	1
DOIs	https://doi.org/10.1038/s41529-025-00640-4
Publication status	Published - 18 Aug 2025
MoE publication type	A2 Review article in a scientific journal

Funding

This work was supported by the Research Council of Finland (Properties and behavior of deliquescent salts and deposits in biomass and waste thermal–conversion - Towards improved efficiency and reliability, Decision No. 333917). The authors also thank the High-Temperature Processes and Materials Group at Åbo Akademi University for providing resources and technical support. The authors acknowledge the funding provided for the article processing charge (open access fee) from Gösta Branders research fund, Åbo Akademi University Foundation (Gösta Branders forskningsfond, Stiftelsen för Åbo Akademi).

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10.1038/s41529-025-00640-4Licence: CC BY

s41529-025-00640-4Final published version, 2.42 MBLicence: CC BY

https://urn.fi/URN:NBN:fi-fe2025082784663

Cite this

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Low-temperature corrosion in large-scale biomass boilers

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