高、转炉煤气应用于蓄热式轧钢加热炉的特性研究

摘要

研究了高炉煤气和转炉煤气的燃烧温度变化规律及应用特点.通过理论计算,分析了炉气成分及燃气种类对炉气发射率和炉内传热过程的影响规律.进行了蓄热式加热炉在蓄热过程中的热量平衡计算,得到了空、煤气在不同预热温度下烟气利用率的变化规律,并进一步分析了烟气利用率对加热炉产生的影响.此外,对比分析了使用两种煤气时对设备投资及现场空间布置的影响.%The combustion temperature change rule and the applied characteristics of blast furnace gas and converter gas were analyzed. Through calculation, the effect of furnace gas composition and gas type on the exhaust gas emission rate and the heat transfer process in the furnace of the influence law was analyzed. The heat balance in storing process of regenerative was calculated. The variation trend of flue gas utilization ratio in deferent preheating temperature was obtained and the effects of flue gas utilization ratio on heating process were further investigated. In addition, the effects of two gases on the e-quipment investment and space layout were analyzed.