鞍钢焦化工序大型炉窑热平衡分析

Analysis on Thermal Balance of Large Coking Furnaces during Coking Process in Ansteel

总结分析了鞍钢焦化工序四个大型炉窑的热平衡测试和计算结果,精准掌握了炼焦解冻系统、焦炉、干熄焦系统及化产管式炉的能量消耗和分配情况,为炼焦全流程的节能降耗提供了数据支撑。炼焦各炉窑测试后,通过采取调整解冻系统中加热煤气量和烟气回流比,优化焦炉运行中的焦饼中心温度和空气过剩系数等参数,降低干熄焦系统中的气料比,改善管式炉中的保温效果等措施,实现了各炉窑能效的精准提升,为全面降低炼焦工序能耗提供了有效支撑。

The heat balance tests and calculation results of four large coking furnaces in the coking process by Ansteel were summarized and analyzed.The energy consumption and distribution condition in terms of thawing system of coking,coke ovens,coke dry quenching(CDQ)system and chemical tubular furnaces were accurately controlled,which providing the data support for energy saving and consumption reduction in the whole coking flow process.After the tests of coking furnaces,depending on these measures taken by adjusting the heating gas quantity and flue gas reflux ratio in thawing system,optimizing the parameters such as center temperatures of coke cakes and air excess coefficient during operation of coke ovens,reducing the ratio of gas to material in CDQ system and improving the heat preservation effect in tubular furnaces,the energy efficiency of each kind of furnaces was accurately improved,which provided effective support for comprehensively reducing the energy consumption in coking process.