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首页> 外文期刊>International Journal of Heat and Mass Transfer >Prediction of protective banks in high temperature smelting furnaces by inverse heat transfer
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Prediction of protective banks in high temperature smelting furnaces by inverse heat transfer

机译：反向传热预测高温冶炼炉中保护层

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摘要

An inverse phase change heat transfer method has been developed for predicting the time evolution of banks covering the surface of refractory brick walls inside high temperature smelting furnaces. The presence of these banks is indispensable as they serve as a protective barrier against the highly corrosive slag, thereby maintaining the structural integrity of the furnace and prolonging its active life. The numerical model rests on the conjugate gradient solution method with the adjoint equation. It predicts banks thickness and motion relying on the thermal conditions prevailing outside the furnace and temperature measurements taken at one location inside the brick wall. Simulations are carried out to examine the effect of different parameters on the predictive capabilities of the method. Results reveal that the method remains accurate in spite of the fact that the temperature measurements inside the wall are noisy and are taken at depth of few centimetres only. An example showing how the present inverse method can be used to warn on the imminent loss of the protective bank during the operation of a smelting furnace is then provided.
机译：已经开发出一种逆相变传热方法来预测高温熔炼炉内覆盖耐火砖壁表面的堤的时间演变。这些堆积物的存在是必不可少的，因为它们充当了防止高腐蚀性炉渣的保护屏障，从而保持了熔炉的结构完整性并延长了其使用寿命。数值模型基于带有伴随方程的共轭梯度解法。它根据炉子外部普遍存在的热条件和在砖墙内一个位置进行的温度测量来预测堤坝的厚度和运动。进行仿真以检查不同参数对方法的预测能力的影响。结果表明，尽管壁内的温度测量值嘈杂且仅在几厘米的深度进行，但该方法仍保持准确。然后提供了一个示例，该示例示出了如何在熔炼炉操作期间如何使用本反方法来警告保护堤即将损失。

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