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Steam reforming of methane on sponge iron: Influence of gas composition on reaction rate

Steam reforming of methane on sponge iron: Influence of gas composition on reaction rate

Category
Academic article
Abstract
Direct Reduction processes use gases (CO and H2) for iron reduction and production of sponge iron or
direct reduced iron (DRI). The generation of this gas occurs through methane reforming, which can be
done in a reformer or inside the reduction shaft with the sponge iron as a catalyst. The latter occurs in
the auto-reforming processes. The kinetics of steam reforming of methane catalyzed by sponge iron was
studied at temperatures between 875°C and 1 050°C. Results showed that sponge iron acts as a catalyst
and methane conversion is increased in higher temperatures and with higher H2/H2O ratio in the inlet gas.
The inlet gas composition like one of the industrial auto-reforming processes led to intense carburization
and hindered the catalytic reforming reaction.
Client
  • Research Council of Norway (RCN) / 280968
Language
English
Author(s)
  • Tiago Ramos Ribeiro
  • João Batista Ferreira Neto
  • Joao G R Poco
  • Cyro Takano
  • Leiv Kolbeinsen
  • Eli Ringdalen
Affiliation
  • Brazil
  • Norwegian University of Science and Technology
  • SINTEF Industry / Metal Production and Processing
Year
Published in
ISIJ International
ISSN
0915-1559
Volume
61
Issue
1
Page(s)
182 - 189