炼铁系统能耗和成本的集成优化及分析

炼铁系统是钢铁生产流程中至关重要的一环.基于物质与能量守恒规律和反应动力学,结合系统节能的理论和混合整数线性规划方法,建立了炼铁系统(烧结、球团、高炉工序)能耗-生产成本集成优化模型,采用企业实际数据验证了其有效性,并获得了目标下各工序最优配料和操作参数.结果表明,综合考虑能耗和成本进行多目标优化时,铁水能耗和成本分别...

Integrated optimization and analysis of energy consumption and cost in ironmaking system

The ironmaking system is a vital part of iron and steel production process. Based on the material and energy conservation law and reaction kinetics, combined with the theory of system energy saving and mixed integer linear programming method (MILP), the energy consumption and production cost integrated optimization model of ironmaking system (sintering, pelletizing, blast furnace process) was established. The actual data of enterprise were used to compare and verify the effectiveness of the model, and the optimal batching and operation parameters of each process under the target were obtained. The results show that the energy consumption and cost of molten iron are reduced by 0.35 GJ/t and 68.40 Yuan/t, respectively, when the energy consumption and production cost are comprehensively considered for multi-objective optimization. In addition, the model was used to analyze the influence of pellet ratio on energy consumption and cost of system, as well as the iron slag, coke ratio and coal ratio of blast furnace. It is pointed out that increasing pellet ratio is an effective measure to reduce blast furnace energy consumption, coke ratio and iron slag.