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Numerical simulation of off-gas formation during top-blown oxygen converter steelmaking

机译：顶吹制氧转炉炼钢过程中废气形成的数值模拟

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摘要

In top-blown oxygen converter steelmaking process, a large amount of high-temperature off-gas is pro duced, and the off-gas is a precious valuable fuel containing high concentration of carbon monoxide (CO). Numerical model is developed for top-blown oxygen converter off-gas formation, the off-gas formation is simulated using the developed model, and the influences of the operating model of converter on the char acteristics of off-gas (concentrations, temperature, flowrate and sensible heat flux) are investigated. The simulated results indicate that CO concentration varies gently, CO concentration can reach about 80% during 10-80% blowing oxygen time, the change trend of CO_2 concentration is contrary to that of CO con centration during 0-90% blowing oxygen time, and the dramatic changes of oxygen lance height result in significant fluctuations of off-gas flowrate. The operation model of oxygen-blowing pressure significantly affects off-gas sensible heat flux, and the sensible heat flux is high during 40-80% blowing oxygen time.
机译：在顶吹式氧气转炉炼钢过程中，会产生大量的高温废气，并且废气是一种含有高浓度一氧化碳（CO）的宝贵贵重燃料。建立了顶吹式氧气转炉废气形成的数值模型，并利用所开发的模型对废气的形成进行了模拟，并且转炉操作模型对废气特性（浓度，温度，流量）的影响和显热通量）。模拟结果表明，CO浓度变化较缓，吹氧时间为10-80％时，CO浓度可达到80％左右；吹氧时间为0-90％时，CO_2浓度变化趋势与CO浓度相反。氧气喷枪高度的急剧变化导致废气流量的明显波动。吹氧压力的运行模型显着影响废气的显热通量，并且在吹氧时间的40-80％时显热通量较高。

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  • 来源
    《Fuel》 |2011年第4期|p.1350-1360|共11页
  • 作者

    Sen Li; Xiaolin Wei; Lixin Yu;

  • 作者单位

    Institute of Mechanics, Chinese Academy of Sciences, No. 15 Beisihuanxi Road, Beijing 100190, China;

    Institute of Mechanics, Chinese Academy of Sciences, No. 15 Beisihuanxi Road, Beijing 100190, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    numerical simulation; converter off-gas; concentration; flowrate; sensible heat flux;

    机译：数值模拟转炉废气;浓度;流量显热通量;

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