我国高炉炉顶煤气温度较高。一般可达250℃,使用热矿时入炉时可达350～450℃。本文对利用高炉煤气湿热予热净煤气烧热风炉以提高热风温度的可行性进行了研究分析,其中包括: 1.换热器种类比较与选择; 2.换热器安装位置的确定; 3.试管换热器结构; 4.试管换热器寿命预测; China’s blast furnace top gas temperature is high. Generally up to 250 ℃, the use of hot ore into the furnace up to 350 ~ 450 ℃. In this paper, the use of blast furnace gas heat to warm the net gas stove to improve the feasibility of hot air temperature is studied and analyzed, including: 1. Comparison of heat exchanger types and selection; 2. Heat exchanger to determine the installation location; Tube heat exchanger structure; 4. Life expectancy of tube heat exchanger;