Rate of corrosion of waterwalls in supercritical pulverised fuel boilers

• Authors: Marek Pronobis , Rafał Litka
• Languages of publication: EN

Abstracts

EN

This paper presents an analysis of the corrosion hazard in the burner belt area of waterwalls in pulverised fuel (PF) boilers that results from low-NOx combustion. Temperature distributions along the waterwall tubes in subcritical (denoted as SUB) and supercritical (SUP) boilers were calculated and compared. Two hypothetical distributions of CO concentrations were assumed in the near-wall layer of the flue gas in the boiler furnace, and the kinetics of the waterwall corrosion were analysed as a function of the local temperature of the tubes. The predicted rate of corrosion of the boiler furnace waterwalls in the supercritical boilers was compared with that of in the subcritical boilers.

Keywords

EN

subcritical and supercritical boilers; corrosion; waterwalls

• Publisher: De Gruyter Open
• Journal: Chemical and Process Engineering
• Year: 2012
• Volume: 33
• Issue: 2
• Pages: 263-277

Dates

published

1 - 6 - 2012

online

5 - 7 - 2012

Contributors

author

Marek Pronobis

• Institute of Power Engineering and Turbomachinery, Silesian University of Technology in Gliwice, ul. Konarskiego 20, 44-100 Gliwice, Poland

author

Rafał Litka

• Institute of Power Engineering and Turbomachinery, Silesian University of Technology in Gliwice, ul. Konarskiego 20, 44-100 Gliwice, Poland

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Identifiers

DOI

10.2478/v10176-012-0026-x