卡鲁金顶燃式热风炉燃烧器的燃烧过程模拟研究

Simulation Study on Combustion Process of Kalugin Top Combustion Hot Blast Stove Burner

高炉热风炉是高炉炼铁生产中的重要设备,提高高炉风温是降低焦比、增加喷煤量、提高冶炼强度的重要措施,合适的燃烧器结构有利于提高热风炉的热效率和送风温度。在对卡鲁金顶燃式热风炉建立初步了解的基础上,运用CFD软件对卡鲁金顶燃式热风炉的燃烧过程进行了数值模拟研究,对比分析了不同燃烧器结构对温度场、CO浓度场、火焰长度以及蓄热室烟气分布的影响。结果表明,燃烧器结构采用"两旋两直"时,卡鲁金顶燃式热风炉的燃烧工况较好。

Hot blast stove is key equipment in BF smelting production. Increasing BF blast temperature is an important measure to reduce coke ratio, increase coal injection and enhance smelting strength, and proper burner structure helps improve stove heat efficiency and increase on-blast temperature. On basis of preliminary understanding on Kalugin top combustion hot blast stove, numerical simulation study was carried out on stove combustion process with CFD software and the influence of different burner structures on temperature field, CO condensation field, flame length and chamber fume distribution compared and analyzed. Results showed the combustion conditions of Kalugin top combustion hot blast stove were satisfactory when ＂ two swirl flows and two straight flows＂ structure was adopted for the burner.