热风炉格子砖活面积优化设计

发布时间：2018-02-14 22:45

本文关键词： 热风炉格子砖活面积混风操作风温操作周期格子砖温度　出处：《耐火材料》2017年05期 　论文类型：期刊论文

【摘要】：为了优化热风炉格子砖的活面积设计,通过二维传热数学模型对热风炉操作过程中格子砖传热现象进行了模拟,研究了混风比例、活面积等参数对格子砖传热性能的影响。结果表明:对于确定工作状态下的热风炉,存在一个使送风期风温保持平稳的最少总混风比例,相应平均风温为该工作状态下热风炉最高送风温度。对于单一孔径格子砖,随着活面积的增大,气-固界面换热加强;但蓄热体容积随之减小,高温区向下扩展,送风期温降加快,所需最少总混风比例增大,送风温度先增大后减小。对于不同孔径格子砖,随着格孔直径的减小,最高送风温度逐渐升高,最少总混风比例逐渐减小,最优活面积逐渐减小,对应当量厚度相对稳定。
[Abstract]:In order to optimize the living area of brick stove design, through a two-dimensional heat transfer mathematical model to simulate the heat transfer process of checker brick stove, the air mixing ratio, effect of live area parameters on the heat transfer performance of bricks. The results showed that to determine the working state of the blast furnace, the existence of a the air air temperature to maintain a stable minimum total air mixing ratio, the corresponding average air temperature to the working condition of hot blast stove the highest air temperature. For a single aperture bricks, with the increase of living area, the gas-solid interfacial heat transfer strengthening; but the heat accumulator volume decreases and the high temperature Zone downward expansion, speed up reduced air temperature, the minimum required total air mixing ratio increases, air temperature increases first and then decreases. For different aperture bricks, with the decrease of hole diameter, the maximum air temperature gradually increased, the least total mixing ratio were decreased, the most The optimal living area gradually decreases, and the corresponding equivalent thickness is relatively stable.

【作者单位】：北京科技大学冶金与生态工程学院;首钢集团总公司;
【基金】：国家自然科学基金资助项目(61271303)
【分类号】：TF578;TQ175.7

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