Journal
APPLIED THERMAL ENGINEERING
Volume 143, Issue -, Pages 822-835Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.applthermaleng.2018.08.010
Keywords
Scale formation model for a mild and a tempering steel; Local and time-dependent scale build-up prediction; Reheating in air; Oxygen enriched and oxy-fuel combustion atmospheres; Material loss minimization by usage of oxygen enriched combustion
Funding
- Austrian Research Promotion Agency (FFG)
- European Regional Development Fund (ERDF) [857567, 7658902]
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This work presents a geometry-flexible, spatially resolved scale formation model for a mild and a tempering steel in high temperature reheating furnaces. Corresponding oxidation kinetics in air-fuel, oxygen enriched and oxy-fuel combustion atmospheres were developed to predict scale layer formation rates with high resolution in time and space. The results demonstrate the influence of different combustion atmospheres on the scale formation behaviour and highlight the local effects of oxidizing species. Finally, it was shown that oxygen enhanced and oxy-fuel combustion can be effectively used in reheating furnaces to minimize material losses, increase both productivity and efficiency and simultaneously reduce costs.
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