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

FUEL

卷:90

Article

Li, Sen¹  Wei, Xiaolin¹  Yu, Lixin¹ 

[1] Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China

关键词: Numerical simulation;    Converter off-gas;    Concentration;    Flowrate;    Sensible heat flux;   

DOI  :  10.1016/j.fuel.2011.01.022

来源: Elsevier

【 摘 要 】

In top-blown oxygen converter steelmaking process, a large amount of high-temperature off-gas is produced, 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 characteristics 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 CO2 concentration is contrary to that of CO concentration 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. (C) 2011 Elsevier Ltd All rights reserved.

【 授权许可】

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