An Overview of CFD Studies of Pulverized Coal Injection in Blast Furnace

摘要：

　　In order to understand the complicated phenomena of pulverized coal injection (PCI) process in blast furnace(BF),several mathematical models have been developed by the UNSW and BSR cooperation.These models are featuring from coal combustion in a pilot-scale test rig,to coal combustion in a real BF,and then to coat/coke combustion in a real BF,respectively.This paper reviews these PCI models in aspects of model developments and model applicability.The model development is firstly discussed in terms of model formulation,their new features and geometry/regions considered.The model applicability is then discussed in terms of main findings followed by the model evaluation on their advantages and limitations.It is indicated that the three PCI models are all able to describe PCI operation qualitatively.The model of coal/coke combustion in a real BF is more reliable for simulating in-furnace phenomena of PCI operation qualitatively and quantitatively.Such model gives a more reliable burnout prediction over the raceway surface,which could better represent the amount of unburnt char entering the coke bed.These models are useful for understanding the flow-thermo-chemical behaviours and then optimising the PCI operation in practice.

关键词： Pulverized coal injection Mathematical modelling Blast furnace

作者: Shen Yansong Yu Aibing Zulli Paul

作者单位: Laboratory for Simulation and Modelling of Particulate Systems, School of Materials Science and Engi BlueScope Steel Research(BSR), P.O.Box 202, Port Kembla, NSW 2505, Australia

会议类型: 国际会议

会议名称: The 4th Australia-China-Japan Joint Symposium on Iron and Steelmaking(第四届中日澳钢铁冶金学术会议)

会议地点: 沈阳

会议语种:英文

页码: 118-130

在线出版日期: 2012-11-03（万方平台首次上网日期，不代表论文的发表时间）