根据炉缸的传热特点,推导了炉缸传热体系的计算公式,利用公式计算结果,分析了炉缸冷却水对延长高炉寿命的作用,重点是冷却水量、冷却水温对炉缸传热的影响规律。洒水冷却的炉壳温度比自然冷却的炉壳温度有显著降低,说明冷却水对维护炉缸安全生产具有重要的作用;在炉缸传热体系中,当水速大于2m/s时,增大冷却水量对炉内传出热量的影响是有限的;降低冷却水温度,增大冷却效果的作用有限。
Based on the characteristics of heat transfer of blast furnace hearth, a formula for analyzing the heat transfer system of the hearth is deducted. Using the calculation results the effect of cooling water on blast furnace life, focused on the influence of water volume and water temperature on the hearth heat transfer system are analyzed. The shell temperature for water-spray cooling is markedly lower than that of natural cooling, that means the cooling water is very important for the hearth safety. When the water velocity is over 2 m/s, the influence of increasing water volume to heat transfer is limited. In addition, lowering the water temperature has limited effect of hearth cooling.
参考文献
| [1] | 高家瑞.动量、热量、质量传输原理[M].重庆:重庆大学出版社,1987 |
| [2] | Jin-su Jung,王天球.采用数学模型评估高炉炉缸侵蚀状况[J].世界钢铁,2001(03):25-28. |
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