발간논문

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Vol.33, No.1, 65 ~ 73, 1995
Title
A 3 - Dimensional Analysis on the Combustion Phenomena Occurring at the Post Combustion Stage in Bath - Type Reduction Furnace
윤병훈 , 신명균 , 윤종규 , 이경우 Byoung Hoon Yoon , Myoung Kyun Shin , Jong Kyu Yoon , Kyung Woo Yi
Abstract
A better fuel efficiency can be achieved by the reaction of CO and H₂ gas produced at the surface of iron bath injected with oxygen gas from lance tip. In this study, the post combustion phenomena in an iron-bath smelter were studied by a numerical method in order to find effective process conditions. The computation simulation for a turbulent gaseous combustion was carried out by the use of k-ε turbulent model, f-g turbulent mixing model and Gibbs energy minimization method for the analysis of the post combustion phenomena in a bath type smelting reduction process. It has been assumed that there is a main nozzle at lance tip and three side nozzles at the side of lance. The effects of lance height, oxygen velocity and side nozzle were studied. the efficiency of post combustion phenomena was found to be better when it happened at higher lance height, lower blowing velocity at the 45˚ angle of side nozzle than other cases.
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