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首页> 外文期刊>Ironmaking & Steelmaking >Numerical simulation of gas and liquid flow in steelmaking converter with top and bottom combined blowing
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Numerical simulation of gas and liquid flow in steelmaking converter with top and bottom combined blowing

机译：上下联合吹炼炼钢转炉气液流动的数值模拟。

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摘要

By combining a volume of fluid (VOF) and discrete phase model (DPM) multiphase flow models, a mathematical model is established to describe the gas and liquid two phase flow in a steelmaking converter with top and bottom combined blowing. The effect of the numbers and location of the bottom tuyeres and top lance height on the gas and liquid two phase flow are investigated and the prediction is validated by the reported actual measured results. The results show that the stirring energy of the combined blowing converter is mainly from buoyancy driven bottom blowing bubbles and the bottom tuyere arrangements have a significant impact on the bubbly plume of combined converter. The mixing efficiency using three bottom tuyeres is higher than the cases with two or four bottom tuyeres and the optimum placement for the bottom tuyeres is away from the centre of the bottom on 0?3D-0?4D (D is the diameter of converter bottom). The mixing time increases with the angle 6 decreasing, which is between bottom tuyeres and trunnion, and 45° is suggested for the angle 9. The top lance height has little influence on the mixing efficiency for the combined blowing converter.
机译：通过结合一定体积的流体（VOF）和离散相模型（DPM）多相流模型，建立了一个数学模型来描述炼钢转炉顶部和底部组合吹气中的气液两相流。研究了底部风口的数量和位置以及顶部喷枪高度对气液两相流的影响，并通过报告的实际测量结果验证了该预测。结果表明，组合式转炉的搅拌能量主要来自浮力驱动的底部吹泡，而底部风口的布置对组合式转炉的气泡羽流有显着影响。使用三个底部风口的混合效率要高于使用两个或四个底部风口的情况，并且底部风口的最佳位置是在0？3D-0？4D上远离底部中心（D是转炉底部的直径）。混合时间随着角度6的减小而增加，该角度在底部风口和耳轴之间，角度9建议为45°。顶部喷枪的高度对组合式吹气转换器的混合效率影响很小。

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