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首页> 外文期刊>Journal of Iron and Steel Research International >Numerical Simulation of Innovative Operation of Blast Furnace Based on Multi-Fluid Model
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Numerical Simulation of Innovative Operation of Blast Furnace Based on Multi-Fluid Model

机译：基于多流模型的高炉创新运行数值模拟

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摘要

A multi-fluid blast furnace model was simply introduced and was used to simulate several innovative iron-making operations. The simulation results show that injecting hydrogen bearing materials, especially injecting natural gas and plastics, the hydrogen reduction is enhanced, and the furnace performance is improved simultaneously. Total heat input shows obvious decrease due to the decrease of heat consumption in direct reduction, solution loss and silicon transfer reactions. If carbon composite agglomerates are charged into the furnace, the temperature of thermal reserve zone will obviously decrease, and the reduction of iron-bearing burden materials will be retarded. However, the efficiency of blast furnace is improved just due to the decrease in heat requirements for solution loss, sinter reduction, and silicon transfer reactions, and less heat loss through top gas and furnace wall. Finally, the model is used to investigate the performance of blast furnace under the condition of top gas recycling together with plastics injection, cold oxygen blasting and carbon composite agglomerate charging. The lower furnace temperature, extremely accelerated reduction rate, drastically decreased CO_2 emission and remarkably enhanced heat efficiency were obtained by using the innovative operations, and the blast furnace operation with superhigh efficiency can be realized.
机译：简单介绍了一种多流体高炉模型，该模型用于模拟几种创新的炼铁操作。仿真结果表明，注入含氢材料，尤其是注入天然气和塑料，可以提高氢的还原率，同时提高炉的性能。由于直接还原，溶液损失和硅转移反应中的热量减少，总热量输入显示出明显的减少。如果将碳复合附聚物装入炉中，则热储备区的温度将明显降低，并且含铁负荷材料的减少将受到阻碍。但是，仅由于减少溶液损失，烧结减少和硅转移反应所需的热量减少，以及通过顶部气体和炉壁的热损失减少，高炉的效率就得到了提高。最后，利用该模型对高炉煤气在顶气再循环，塑料注入，冷氧鼓风和碳复合附聚物装料的条件下的性能进行了研究。通过采用这种创新的操作，可以降低炉温，降低还原速度，大大降低CO_2的排放，并显着提高热效率，从而可以实现高效率的高炉操作。

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