铁浴固废处理炉的物质与能量平衡模型的构建及应用

Construction and application of material and energy balance model for iron bath solid waste treatment furnace

为了高效清洁地处理有机固废与含铁固废,同时发挥冶金行业生产设备的独有优势,介绍了新开发的铁浴固废协同处理技术。针对铁浴固废协同处理工艺参数优化,构建了铁浴固废处理炉的能质平衡模型,计算了30%城市有机固废与70%钢铁粉尘协同处理过程中的物质平衡及能量平衡情况,结果表明处理过程中CO和H_(2)的二次燃烧热是主要的热量来源,二次燃烧放热可达总放热量的50%以上,主要热量损失为烟气排出时带走的显热,可以占到热量总需求的45%。在实际生产中可通过烟气余热回收系统回收热量,用于入炉气体的预热,有效降低系统能耗。该模型的构建与应用,为后续工业化试验提供了数据支撑,便于工程设计与操作优化。

In order to efficiently and cleanly treat organic solid waste and iron-containing solid waste,and at the same time give full play to the unique advantages of production equipment in the metallurgical industry,a newly developed iron bath solid waste collaborative treatment technology was introduced.Based on the optimization of the process parameters of the iron bath solid waste co-treatment,the energy and mass balance model of iron bath solid waste treatment furnace was constructed.The material balance and energy balance in the co-treatment of 30%of urban organic solid waste and 70%of steel dust were calculated.The results show that the secondary combustion heat of CO and H_(2) is the main source of heat during the treatment,and the secondary combustion exothermic heat can reach more than 50%of the total exothermic heat.The main heat loss is the sensible heat taken away when the flue gas is discharged,which can account for 45%of the total heat demand.In actual production,heat can be recovered through the flue gas waste heat recovery system,which is used for the preheating of the incoming gas,effectively reducing the energy consumption of the system.The construction and application of this model provide data support for subsequent industrialization experiments,which is convenient for engineering design and operation optimization.