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首页> 外文会议>World Congress on Particle Technology >Modeling Coal/coke Combustion Behavior in Tuyere-raceway-dripping Zone in Blast Furnace
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Modeling Coal/coke Combustion Behavior in Tuyere-raceway-dripping Zone in Blast Furnace

机译：大教滚道滴灌区建模煤/焦炭燃烧行为

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摘要

Based on the operation conditions of the iron making blast furnace of 580 m~3 in the industrial base of MCC Company, a three-dimensional mathematical model for analyzing combustion behavior of gas, pulverized coal and coke bed in the tuyere-raceway-dripping zone of blast furnace has been developed in the present research. The gas was modeled with steady-state turbulent Navier-Stokes equations;; the pulverized coal particles were modeled by using a DPM (discrete particle model) approach and coke bed was treated simply as porous media. Two cases, the normal PCI case and the intensified PCI case, were then analyzed and compared. The simulation results indicate that, compared to the normal PCI case, the intensified PCI case has the advantage of an increase of 0.1 volume fraction of CO in the gas and moreover some 60 kg-coke/tHM could be saved. The negative effects of the proposed intensified PCI mode mainly include the drop of combustion temperature and the shrinkage of raceway.
机译：基于MCC公司工业基地炼铁炉的运作条件，是一家三维数学模型，用于分析风口循环区气体，煤粉煤和焦床的燃烧行为在本研究中已经开发了高炉。气体模拟稳态湍流Navier-Stokes方程;通过使用DPM（离散粒子模型）的方法进行建模粉煤颗粒，并且仅作为多孔介质处理焦床。然后，然后分析并比较正常的PCI案例和强化PCI案例。仿真结果表明，与正常的PCI案例相比，增强的PCI案例具有增加0.1体积分数的加入气体中的0.1体积分数，而且可以节省约60千克焦/ THM。所提出的强化PCI模式的负面影响主要包括燃烧温度和滚道的收缩。

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