SCI和EI收录∣中国化工学会会刊

›› 2012, Vol. 20 ›› Issue (1): 10-17.

• • 上一篇    下一篇

Study on Kinetics of Iron Oxide Reduction by Hydrogen

侯宝林, 张海英, 李洪钟, 朱庆山   

  1. State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
  • 收稿日期:2011-06-17 修回日期:2011-12-06 出版日期:2012-02-28 发布日期:2012-05-03
  • 通讯作者: LI Hongzhong,E-mail:hzli@home.ipe.ac.cn;ZHU Qingshan,E-mail:qszhu@home.ipe.ac.cn
  • 基金资助:
    Supported by the National Natural Science Foundation of China (20736004);the State Key Development Program for Basic Research of China (2007CB613502)

Study on Kinetics of Iron Oxide Reduction by Hydrogen

HOU Baolin, ZHANG Haiying, LI Hongzhong, ZHU Qingshan   

  1. State Key Laboratory of Multi-phase Complex Systems, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China
  • Received:2011-06-17 Revised:2011-12-06 Online:2012-02-28 Published:2012-05-03
  • Supported by:
    Supported by the National Natural Science Foundation of China (20736004);the State Key Development Program for Basic Research of China (2007CB613502)

摘要: Kinetics parameters of iron oxide reduction by hydrogen were evaluated by the isothermal method in a differential micro-packed bed.Influence of external diffusion,internal diffusion and heat transfer on the intrinsic reaction rate was investigated and the conditions free of internal and external diffusion resistance have been determined.In the experiments,in order to correctly evaluate the intrinsic kinetics parameters for reducing Fe2O3 to Fe3O4,the reaction temperatures were set between 440℃ and 490℃.However,in order to distinguish the reduction of Fe3O4 to FeO from that of FeO to Fe,the reaction temperature in the experiment was set to be greater than 570℃.Intrinsic kinetics of iron oxide reduction by hydrogen was established and the newly established kinetic models were validated by the experimental data.

关键词: isothermal method, reduction kinetics, iron oxide, packed bed, hydrogen reduction

Abstract: Kinetics parameters of iron oxide reduction by hydrogen were evaluated by the isothermal method in a differential micro-packed bed.Influence of external diffusion,internal diffusion and heat transfer on the intrinsic reaction rate was investigated and the conditions free of internal and external diffusion resistance have been determined.In the experiments,in order to correctly evaluate the intrinsic kinetics parameters for reducing Fe2O3 to Fe3O4,the reaction temperatures were set between 440℃ and 490℃.However,in order to distinguish the reduction of Fe3O4 to FeO from that of FeO to Fe,the reaction temperature in the experiment was set to be greater than 570℃.Intrinsic kinetics of iron oxide reduction by hydrogen was established and the newly established kinetic models were validated by the experimental data.

Key words: isothermal method, reduction kinetics, iron oxide, packed bed, hydrogen reduction

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