Numerical simulation of off-gas formation during top-blown oxygen converter steelmaking
Abstract
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 CO(2) 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- Article
- 期刊论文
- Numerical Simulation
- Converter Off-gas
- Concentration
- Flowrate
- Sensible Heat Flux
- Recovery
- Steel
- Energy & Fuels
- Engineering
- RECOVERY
- STEEL
- Energy & Fuels
- Engineering
- Energy & Fuels
- Engineering, Chemical
- 一类
- numerical analysis
- converter off-gas
- composition
- flow rate
- speed
- sensible heat flux
- recovery
- steel
- 数值模拟
- 数值模拟方法
- numerical methods
- numerical simulation
- galerkin method
- rayleigh-ritz methods
- relaxation theory
- variational techniques
- variational calculus
- rayleigh-ritz method
- 瑞利-里茨法
- 伽辽金法
- galerkin analysis
- 数值分析
- 收敛发散喷嘴
- 复合
- acid concentration
- composition (francais)
- concentration
- concentration (acid)
- concentration (francais)
- zusammensetzung
- content
- 库容
- 浓度
- concentration (ores)
- anreicherungsarbeit (erze)
- physical concentration (ores)
- 流量
- flow discharge
- flow velocity
- 角速度
- velocity
- --velocity
- angular velocity
- absolute velocity
- 绝对速度
- 速度
- 速率
- geschwindigkeit
- vitesse
- angular motion
- velocities
- 感热通量
- sensible heat transfer
- 回收
- polygonisation
- polygonization
- polygonisation (francais)
- recovery (annealing)
- erholung (gluehung)
- restauration (recuit)
- recovery (hydrometallurgy)
- recuperation (hydrometallurgie)
- rueckgewinnung (nassmetallurgie)
- recovery (metal)
- percent recovery
- recuperation
- rueckgewinnung (metalle)
- recovery (wastes)
- recuperation (dechets)
- rueckgewinnung (abfaelle)
- recovery of equipment
- recovery of lost or stolen library materials
- martensitic steel
- bainitic steel
- ferritic steel
- pearlitic steel
- rimming steel