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由鞍钢炼铁厂、东北工学院、新光机械厂联合研制的大型重力式气—气式钢·水热管换热器系统于1983年10月在鞍钢9号高炉投入运行,系统正常,效果明显。当烟道废气温度160～220℃时,可将助燃空气预热到70～140℃,相应提高风温33℃,节约煤气8.7％,提高热风炉热效率5％。估算每年可净收益71万元,系统设备总投资67.5万元,一年内即可回收。
A large-scale gravity gas-gas steel-water heat pipe heat exchanger system jointly developed by Anshan Iron and Steel Co., Ltd., Northeastern University of Technology and Xinguang Machinery Factory was put into operation at No.9 BF of Anshan Iron and Steel Co., Ltd. in October 1983 with normal system and obvious effect. When flue gas temperature 160 ~ 220 ℃, the combustion air can be preheated to 70 ~ 140 ℃, the corresponding increase in air temperature 33 ℃, 8.7% gas savings and improve the hot blast furnace thermal efficiency of 5%. Estimated annual net income 710,000 yuan, the system equipment total investment 675,000 yuan, within one year can be recovered.