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Heat transfer and energy analysis of a pusher type reheating furnace using Oxygen enhanced air for combustion
, Article Journal of Iron and Steel Research International ; Volume 17, Issue 4 , 2010 , Pages 12-17 ; 1006706X (ISSN) ; Saidi, M. H ; Sharif University of Technology
Abstract
Oxy-fuel firing is more energy efficient and environmental friendly than conventional air-fuel firing and its application to reheating furnaces has hegun since 1990s. A computational method was presented to predict the steady heat transfer to the billets and temperature distribution in a continuous pusher type reheating furnace in which combustion air was enhanced by oxygen. Radiation heat flux calculated from the radiation heat exchange within the furnace was modeled using the FVM considering the effects of furnace walls and billets. Energy consumption per ton of steel, production rate and thermal efficiency of furnace, and trend of NOx emission in various levels of oxygen enrichment were...