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·506· 工程科学学报,第37卷,第4期 2500 ■一风口理论燃烧温度 ▲一炉顶煤气温度 2400 2300 600- 500 400 90 100 300 400 500 % V /m'.g) 图7氧气含量和上循环煤气流量对风口燃烧温度和炉顶煤气温度的影响 Fig.7 Effect of oxygen concentration and upper gas volume on flame temperature and top gas temperature 10 : : 一一·传统高炉0 :··传统高0 氧气高炉C0j 10 12 20 40 60 80 质量流量从g·少 x/% 传统高炉(固相) 传统高炉 传统高炉(气相) 氧气高炉 氧气高炉(固相) 氧气高炉(气相) 4 1 500 1000 1500 2000 2500020406080100 温度K f/除 图8氧气高护与传统高炉炉内过程变量对比.(“)气固质量流量和气体组分的摩尔分数:(b)气固温度和铁矿石还原度 Fig.8 Comparison of process variables between the oxygen blast furnace and the conventional blast fumace:(a)gas/solid mass flow and gas molar fractions;(b)gas/solid temperature and fractional reduction of iron ore工程科学学报,第 37 卷,第 4 期 图 7 氧气含量和上循环煤气流量对风口燃烧温度和炉顶煤气温度的影响 Fig. 7 Effect of oxygen concentration and upper gas volume on flame temperature and top gas temperature 图 8 氧气高炉与传统高炉炉内过程变量对比. ( a) 气固质量流量和气体组分的摩尔分数; ( b) 气固温度和铁矿石还原度 Fig. 8 Comparison of process variables between the oxygen blast furnace and the conventional blast furnace: ( a) gas/ solid mass flow and gas molar fractions; ( b) gas/ solid temperature and fractional reduction of iron ore · 605 ·
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