Study on Kinetics of Iron Oxide Reduction by Hydrogen

被引：132

作者：

Hou Baolin ^{[1
]}

Zhang Haiying ^{[1
]}

Li Hongzhong ^{[1
]}

Zhu Qingshan ^{[1
]}

机构：

[1] Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China

来源：

CHINESE JOURNAL OF CHEMICAL ENGINEERING | 2012年 / 20卷 / 01期

基金：

中国国家自然科学基金;

关键词：

isothermal method; reduction kinetics; iron oxide; packed bed; hydrogen reduction; LOW-TEMPERATURE REDUCTION; CARBON; HEMATITE; BEHAVIOR; H-2;

D O I：

10.1016/S1004-9541(12)60357-7

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

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 degrees C and 490 degrees C. 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 degrees C. Intrinsic kinetics of iron oxide reduction by hydrogen was established and the newly established kinetic models were validated by the experimental data.

引用

页码：10 / 17

页数：8

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