Simultaneous Three-dimensional Analysis of Gas–Solid Flow in Blast Furnace by Combining Discrete Element Method and Computational Fluid Dynamics

• DOI: 10.2355/isijinternational.51.41
• Publication Date: 2011-01-18T06:03:26Z
• Authors: Shungo Natsui; Hiroshi Nogami; Shigeru Ueda; Junya Kano; Ryo Inoue; Tatsuro Ariyama
• Keywords: 0211 other engineering and technologies; 02 engineering and technology; 7. Clean energy

Low reducing agent operation of the blast furnace is an essential method for mitigating CO2 emissions in ironmaking. Because coke rate reduced low operation, gas permeability tends to deteriorate. Recently, furnaces with inner volume larger than 5000 m3 have become usual not only Japan, but also other Asian nations. Under these conditions, detailed information on in-furnace phenomena required attain stable operation.In present study, a combination model using discrete element and computational fluid dynamics (DEM-CFD) was introduced understand fully three-dimensional whole furnace. Due limitations resources, number DEM particles must be when applying On hand, small cells used continuum order calculate flow detail. Thus, mutual conversion between location property needed. In this converting locations cluster-approximated treated proposed. Furthermore, optimization which could obtained without parameters performed avoid losing local by calculations. Simulations solid movement were successfully carried out coupled DEM-CFD model. As result, it became possible stress field among under flow, transient pressure distribution caused charging burden materials, as well motion.