介绍了首钢京唐钢铁厂5 500m3高炉BSK顶燃式热风炉的设计创新。优化集成了特大型顶燃式热风炉工艺;研究开发了助燃空气两级高温预热技术和顶燃式热风炉高效陶瓷燃烧器。根据顶燃式热风炉特性设计了合理的拱顶和陶瓷燃烧器结构;采用高效格子砖,优化了蓄热室的热工参数与结构,确定了合理的热风炉蓄热面积。优化热风炉炉体内衬设计;采用了有效防止热风炉炉壳晶间应力腐蚀的技术措施。根据蓄热室传热计算,合理配置了热风炉炉体耐火材料,提高了耐火材料技术性能。优化热风管道系统耐火材料结构设计,使热风管道系统合理化并满足1 300℃高风温的要求。高炉投产后热风温达到设计水平,实现月平均风温1 300℃。
This paper introduces the technical innovation of BSK dome combustion hot stove for 5 500 m3 blast furnace at Shougang Jingtang Steel Plant.Ultra large dome combustion hot blast stove optimum technical process is integrated;high temperature 2 stage preheating technology of combustion air and dome combustion hot stove high-efficiency ceramic burner are developed;according to the characteristics of dome combustion hot blast stove,the rational structure of dome and ceramic burner are designed;high efficiency checker brick is adopted,the thermal specification and structure of regenerator are optimized;reasonable hot blast stove checker heating surface is determined.Hot blast stove proper lining design is optimized;the effective technical measures for hot blast stove shell inter-crystalline stress corrosion prevention is applied.According to the thermal conduction calculation of regenerator suitable hot blast stove refractory is configured;the refractory technical performance is improved additionally.Refractory structure design of hot blast pipe system is improved in order to meet the requirement of 1 300 ℃ blast temperature.Blast temperature of design level is reached to 1 300 ℃ monthly after blast furnace blow in.
参考文献
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