高炉喷吹焦炉煤气的数学模拟.pdfVIP

高炉喷吹焦炉煤气的数学模拟 郭同来 储满生 柳政根 陈双印 唐 珏 1 （东北大学材料与冶金学院，沈阳 110819 ） 摘 要 为了合理利用国内富裕焦炉煤气，降低钢铁企业能耗，实现高炉低碳炼铁。本研究提出了高炉喷吹焦炉煤 气技术，并利用回旋区质量和热平衡理论、多流体高炉数学模型以及 exergy 分析理论对喷吹焦炉煤气后高炉各项 指标的变化进行了分析。分析结果表明：随着焦炉煤气喷吹量的增加，炉内还原气氛加强，含铁炉料的还原速率加 快，生铁 Si 含量降低，高炉产量增加，节焦效果明显，碳排放量减少，高炉的能量利用效率提高。可见，高炉喷 吹焦炉煤气可实现钢铁行业节能减排的目标。 关键词 焦炉煤气喷吹 回旋区质量和热平衡 多流体高炉数学模型 exergy 分析 低碳炼铁 Numerical Simulation on Blast Furnace with， Coke Oven Gas Injection Guo Tonglai Chu Mansheng Liu Zhenggen Chen Shuangyin Tang Jue (School Materials Metallurgy, Northeastern University, Shenyang, 110819) Abstract In order to use the abundant coke oven gas reasonably, decrease energy consumption, and achieve low carbon ironmaking of blast furnace. The paper put forth a process of injection coke oven gas into blast furnace, and the raceway mass balance and thermal balance theory, multi-fluid blast furnace model and exergy analytical theory are used to analyze the performance of blast furnace with coke oven gas injection. Results as follows: with the increasing of coke oven gas injection, the reducing atmosphere in-furnace is strengthened, and the reducing rate of iron bearing materials is accelerated, the silicon content of pig iron is decreased, the pig iron output in-furnace is increased, the effect of coke saving is obvious, carbon emission is reduced significantly, and the utilization efficiency of energy in-furnace is enhanced. Thus, the injection of coke oven gas into blast furnace can achieve the goal of higher productivity, lower pollution, and lower energy consumption and less CO2 in iron and steel enterprise. Key words coke oven gas injection, raceway mass and the