Analysis of the Burden Descending Behavior in an Enlarged Shaft Furnace for Ferro-Coke Production by DEM

• Kon Tatsuya

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

• Natsui Shungo

  Division of Materials Science and Engineering, Faculty of Engineering, Hokkaido University

• Ueda Shigeru

  Institute of Multidisciplinary Research for Advanced Materials, Tohoku University

• Inoue Ryo

  Akita University

• Enoeda Seiji

  Steel Research Lab., Mechanical Engineering Research Dept., JFE Steel Corporation

• Ariyama Tatsuro

  Emeritus professor, Tohoku University

Bibliographic Information

Other Title

• 離散要素法によるフェロコークス製造用竪型乾留炉の炉体大型化に伴う粒子の降下挙動変化の解析
• リサン ヨウソホウ ニ ヨル フェロコークス セイゾウヨウ タテガタ カンリュウロ ノ ロタイ オオガタカ ニ トモナウ リュウシ ノ コウカ キョドウ ヘンカ ノ カイセキ

Abstract

With the aim to decrease the reducing agent rate in blast furnace, the use of ferro coke containing metallic iron as a catalyst was proposed. This new burden material is expected to lower thermal reserve zone temperature. For the production of ferro coke, the use of a vertical coke oven is examined to realize the optimum carbonizing process. In this type of the oven, the burden materials have a distribution in residence time due to the friction effect on the wall and the interaction between the burdens. It has a great influence on the properties and quality of the ferro coke. Increasing the size of the vertical coke oven is essential for producing a large amount of ferro coke efficiency with stable quality.<br/>In this study, the burden descending behavior in an enlarged vertical coke oven was calculated by Discrete Element Method (DEM). The effects of the shape of the discharging part and the discharging method on the residence time of the burden were analyzed based on the calculated results. In addition, considering the reinforcement of the enlarged coke oven, the burden descending behavior in the vertical coke oven with reinforcing horizontal beam inside was also examined.<br/>The calculation results showed that distribution variation in the residence time could be decreased by increase in the size of the vertical coke oven. Furthermore, the results showed the possibility of controlling the residence time by controlling the discharge method.

Journal

• Tetsu-to-Hagane

  Tetsu-to-Hagane 100 (5), 593-600, 2014

  The Iron and Steel Institute of Japan

Keywords

• ironmaking
• ferro coke
• CO₂ reduction
• vertical type of coke oven
• moving bed
• discrete element method
• residence time distribution

Details

• CRID: 1390001205126095104
• NII Article ID: 130004747762
• NII Book ID: AN10528571
• ISSN: 1341688X
• ISSN: 18832954
• ISSN: 00211575
• DOI: 10.2355/tetsutohagane.100.593
• COI: 1:CAS:528:DC%2BC2cXns1yjt7k%3D
• NDL BIB ID: 025419814
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I025419814
• Web Site: https://www.jstage.jst.go.jp/article/tetsutohagane/100/5/100_593/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed