Comprehensive Mathematical Model of Full Oxygen Blast Furnace and its Solution
Comprehensive Mathematical Model of Full Oxygen Blast Furnace and its Solution
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DOI：
10.4028/www.scientific.net/amr.567.178
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发表时间：
2012-09
期刊：
影响因子：
--
通讯作者：
J. Meng;Zhancheng Guo;Huiqing Tang
中科院分区：
文献类型：
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作者：
J. Meng;Zhancheng Guo;Huiqing Tang
建立了炉顶煤气循环全高炉的综合数学模型。该模型由四个区域（炉缸、炉腹、下炉身）的煤气成分计算方程组成。高炉热备用区能量平衡模型、高炉热化学平衡模型和高炉轴效率模型。利用该模型对新工艺进行了计算。结果表明，新工艺焦比、煤比均为200 kg/t，燃料比常规高炉降低22.8%。此外，理论燃烧温度随炉膛再循环气量的增加而降低。炉膛循环气量每增加10 m3/thm，理论燃烧温度降低10.0 K。此外，该模型还可用于计算原材料和燃料条件不同时的操作参数，并研究相同原材料和燃料条件下操作参数的变化规律。
A comprehensive mathematical model of full blast furnace with top gas recycling was established. The model consists of the calculation equations for gas composition of four zones (hearth, belly, lower shaft. top) in the blast furnace, the thermo-chemical balance model, the energy balance model of hot stand-by zone of the blast furnace and the shaft efficiency model. By using the model, the new process was calculated. The results show that coke rate and coal rate of the new process are both 200 kg/thm, fuel rate is decreased by 22.8% compared with that of conventional blast furnace. In addition, theoretical combustion temperature decreases with increasing hearth-recycle gas quantity. Increasing of hearth-recycle gas quantity by 10 m3/thm decreases theoretical combustion temperature by 10.0 K. Furthermore, the model could be applied to calculate the operating parameters when the raw materials and fuel conditions are different, and the change laws of operating parameters under the same raw materials and fuel conditions could also be studied with this model.