论文部分内容阅读
将氧气高炉分为高温区、固体炉料区和煤气加热区三个区域,并分析了各区域的物理约束和化学约束条件.在物料平衡和能量平衡的基础上,建立了氧气高炉多区域约束性数学模型.理论分析和计算结果表明:多区域约束性数学模型可以弥补全炉热平衡的不足,反映热量在不同区域的利用价值;固体炉料区受间接还原反应和热平衡的约束,随着金属化率的升高,需要循环煤气量逐渐增大;当金属化率很高时,在高温区和固体炉料区满足热平衡条件下,虽然计算得到的燃料比很低,但煤气加热区煤气量不能实现平衡.
The oxygen blast furnace is divided into three areas, high temperature zone, solid charge zone and gas heating zone, and the physical and chemical constraints of each zone are analyzed.Based on the material balance and energy balance, the multi-zone constraint of oxygen blast furnace Mathematical model.The theoretical analysis and calculation results show that the multi-region constrained mathematical model can make up for the lack of heat balance in the furnace and reflect the value of heat utilization in different regions. The solid charge zone is restrained by the indirect reduction reaction and heat balance, , The amount of circulating gas needs to increase gradually. When the metallization rate is very high, the calculated gas ratio is very low under the conditions of heat balance in high temperature zone and solid charge zone, but the gas volume in gas heating zone can not be balanced .