Numerical study of pulverized coal injection in a blast furnace
Pulverized coal injection is widely practised in ironmaking blast furnace.High coal burnout is desired to maximize the coal injection rate.A mathematical model is described to simulate the coal combustion in tuyere and raceway region in a blast furnace.The model formulation is validated against the measurements from a pilot-scale combustion test rig with an inclined co-axial lance.The in-furnace phenomena related to coal combustion along the main coal plume is reproduced.The effects of some operational parameters on combustion behaviours are investigated to understand the underlying mechanisms.The results indicate that the coal burnout is sensitive to the changes of these parameters.Linear relationships are found between coal burnout and these parameters.The coal burnout strongly depends on availability of oxygen and particle residence time.The model provides a cost-effective tool for design and optimization of pulverized coal injection operation.
mathematical modelling pulverized coal injection blast furnace
Y S Shen D Maldonado B Y Guo A B Yu P Austin P Zulli
Lab for Simulation and Modelling of Particulate Systems,School of Materials Science and Engineering, BlueScope Steel Research,P.O.Box 202,Port Kembla,NSW 2505,Australia
国际会议
上海
英文
97-101
2008-09-26（万方平台首次上网日期，不代表论文的发表时间）