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建立了基于有限元法的钢包二维传热模型,运用Ansys软件对钢包在不同绝热层厚度情况下的热状态及保温性能分别进行了模拟计算.有绝热层的钢包可以明显地提高自身的保温性能,且随着绝热层厚度的增加,保温效果愈加突显,但幅度越来越小.与无绝热层的钢包相比,在绝热层厚度达到20 mm时,钢包预热时间缩短约1 h,节约煤气消耗1000 m3,降低钢水温降约6℃.在热饱和阶段,钢包外壁温度平均降低了100℃,包壁散热减小,1h可以节能1255680kJ,折合标准煤43kg.最后利用现场实测数据进行了验证,结果表明模拟结果正确可信.
The two-dimensional heat transfer model of ladle based on finite element method was established, and the calculation of thermal state and thermal insulation performance of ladle under different thickness of insulation layer was carried out by Ansys software.The ladle with thermal insulation layer can obviously improve its thermal insulation Performance, and with the increase of the thickness of insulation layer, the effect of heat preservation is more and more obvious, but the amplitude is smaller and smaller.When the thickness of insulation layer reaches 20 mm, the ladle preheating time is shortened by about 1 h, Saving gas consumption of 1000 m3 and reducing the temperature drop of molten steel by about 6 ° C. In the hot saturation stage, the temperature of the outer wall of the ladle is reduced by 100 ° C on average, the heat dissipation of the cladding wall is reduced, energy saving is 1255680 kJ in 1 h, equivalent to 43 kg of standard coal. Verified, the results show that the simulation results are correct and credible.