7TH EUROPEAN COKE AND IRONMAKING CONGRESS - ECIC 2016

Environmental regulation and economic conditions demand greater efficiencies in the control of emissions and fugitive releases in iron ore processing, iron making, and coke handling operations. This paper provides an overview of recent applications of Computational Fluid Dynamics (CFD) to this aspect of the industry. The case studies discussed include: 1) NOx reduction expected by the utilization of a low NOx burner in an iron ore induration kiln, 2) effectiveness of Flue Gas Recirculation (FGR) in reducing NOx emissions from a waste heat boiler burning blast furnace gas, coke oven gas, and natural gas, 3) the design optimization of a blast furnace taphole hood, 4) dust control in the conveyance of coke, and 5) Nitrogen purging of a cold box in a coke oven battery. It is demonstrated through the case studies that CFD is an effective tool for reducing technical risk in the design phase, evaluating various solution options to arrive at the most practical and cost effective solution, and for quantifying the reduction in emissions and fugitive releases to be expected through implementation of the proposed solutions.