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Improvements on Calculation Model of Theoretical Combustion Temperature in a Blast Furnace

WU Sheng-li , LIU Cheng-song , FU Chang-liang , XU Jian , KOU Ming-yin

钢铁研究学报(英文版)

On the basis of the existing originally modified calculation models of theoretical combustion temperature (TCT), some factors, such as the combustion ratio of pulverized coal injection (PCI), the decomposition heat of PCI and the heat consumption of SiO2 in ash reduced in high temperature environment, were amended and improved to put forward a more comprehensive model for calculating TCT. The influences of each improvement on TCT were studied and the results were analyzed compared with those of traditional model and originally modified model, which showed that the present model could reflect the thermal state of a hearth more effectively.

关键词: blast furnace , theoretical combustion temperature , improved calculation model

考虑化学反应平衡的理论燃烧温度计算

王广伟,张建良,苏步新,邵久刚,邱家用

钢铁

从化学反应平衡角度给出新的高炉理论燃烧温度计算模型及求解方法,对比不同条件下传统模型和新模型风口回旋区理论燃烧温度的计算值。结果表明:H2/H2O化学平衡对理论燃烧温度的影响要远大于CO/CO2平衡;对于全焦高炉,传统模型和新模型对不同条件下理论燃烧温度差异的表征基本相同;高炉喷吹富氢燃料以后,新模型更能表征不同条件下理论燃烧温度的差异。

关键词: 高炉 , theoretical combustion temperature , calculation , fuel injection

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