NDLI: Prediction of Raceways in a Blast Furnace

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Naresh, K. Selvarasu Huang, D. Chen, Zumao Gu, Mingyan Zhao, Yongfu Chaubal, Pinakin Chenn, Q. Zhou
Copyright Year	2006
Abstract	In a blast furnace, preheated air and fuel (gas, oil or pulverized coal) are often injected into the lower part of the furnace through tuyeres, forming a raceway in which the injected fuel and some of the coke descending from the top of the furnace are combusted and gasified. The shape and size of the raceway greatly affect the combustion of, the coke and the injected fuel in the blast furnace. In this paper, a three-dimensional (3-D) computational fluid dynamics (CFD) model is developed to investigate the raceway evolution. The furnace geometry and operating conditions are based on the Mittal Steel IH7 blast furnace. The effects of Tuyere-velocity, coke particle size and burden properties are computed. It is found that the raceway depth increases with an increase in the tuyere velocity and a decrease in the coke particle size in the active coke zone. The CFD results are validated using experimental correlations and actual observations. The computational results provide useful insight into the raceway formation and the factors that influence its size and shape.
Sponsorship	Nuclear Engineering Division
Starting Page	297
Ending Page	303
Page Count	7
File Format	PDF
ISBN	0791847837
DOI	10.1115/IMECE2006-15573
e-ISBN	0791837904
Volume Number	Energy Conversion and Resources
Conference Proceedings	ASME 2006 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2006-11-05
Publisher Place	Chicago, Illinois, USA
Access Restriction	Subscribed
Subject Keyword	Model Iron making. blast furnace Pci. raceway. cfd Computational fluid dynamics Blast furnaces
Content Type	Text
Resource Type	Article

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