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首页> 外文期刊>ISIJ international >Perspective on Progressive Development of Oxygen Blast Furnace for Energy Saving
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Perspective on Progressive Development of Oxygen Blast Furnace for Energy Saving

机译：节能氧气高炉逐步发展的前景

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The importance of energy saving in the ironmaking process is widely recognized. Many energy saving efforts related to ironmaking have already been carried out, and further energy savings by conventional methods are hardly to be expected. The oxygen blast furnace is considered to be a promising process in terms of flexibility of energy use and advantages related to CO_2 mitigation. Focusing on energy saving, in this study, the optimum configuration of the ironmaking process based on the oxygen blast furnace was investigated by numerical approaches and case studies. First, because productivity can be greatly improved in the oxygen blast furnace, blast furnace inner volume can be reduced while maintaining the same production rate. Because the downsized oxygen blast furnace makes it possible to relax burden material strength requirements, energy consumption for agglomeration in the coke oven and sintering machine can also be reduced. Therefore, a DEM simulation was carried out to confirm the effect of the burden load reduction in the downsized condition. It was found that the compressive stress in the downsized oxygen blast furnace was 20-30% less than that in the conventional blast furnace. The energy flow in the ironmaking process was also investigated by using a material and energy balance model, considering the functions of an integrated steel works. It was found that the energy consumption of the ironmaking process based on the energy saving oxygen blast furnace could be reduced by 5.3% while maintaining the same energy supply to downstream processes.
机译：节能在炼铁过程中的重要性已得到广泛认可。已经进行了许多与炼铁有关的节能工作，并且很难期望通过传统方法进一步节能。就能源使用的灵活性和与减少CO_2有关的优势而言，氧气鼓风炉被认为是一种有前途的工艺。本研究着重于节能，通过数值方法和案例研究，研究了基于氧气高炉的炼铁工艺的最佳配置。首先，因为可以在氧气高炉中大大提高生产率，所以可以在保持相同的生产率的同时减少高炉内部体积。因为减小了尺寸的氧气高炉可以放宽对物料强度的要求，所以还可以减少焦炉和烧结机中附聚的能量消耗。因此，进行了DEM仿真，以确认减小尺寸条件下减轻负担的效果。发现减小的氧气鼓风炉中的压缩应力比常规鼓风炉中的压缩应力小20-30％。考虑到综合钢厂的功能，还使用材料和能量平衡模型研究了炼铁过程中的能量流。结果发现，基于节能型氧气鼓风炉的炼铁工艺的能耗可降低5.3％，同时保持对下游工艺的相同能源供应。

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