TY - JOUR
T1 - Gasification Behaviors of Ferrocoke With and Without Water Vapor
AU - Xu, Runsheng
AU - Deng, Shuliang
AU - Zheng, Heng
AU - Huang, Xiaoming
AU - Daghagheleh, Oday
AU - Schenk, Johannes
AU - Zhang, Jianliang
AU - Zhu, Jijian
N1 - Publisher Copyright:
© 2022 The Authors. Steel Research International published by Wiley-VCH GmbH.
PY - 2022/9/25
Y1 - 2022/9/25
N2 - High-reactivity coke can improve the reaction efficiency in a blast furnace, hence reducing CO2 emission. Herein, traditional coke sample (QM), normal ferrocoke sample (TJ), and modified ferrocoke sample (LQ) are examined. The effect of water vapor on the gasification behaviors and structural evolution of the samples are investigated. Furthermore, the 3D structures of the coke matrix and iron particles are reconstructed by serial sectioning method. The results show that under a pure CO2 atmosphere, the TJ and LQ samples start the gasification reaction earlier than the QM sample. The TJ sample shows the highest reactivity. Under CO2 + H2O atmosphere, the conversion rate of TJ and LQ samples is slowed. The reoxidation of the metallic iron within the ferrocoke is found for the first time during gasification and causes this phenomenon. Under experimental conditions, when water vapor appears in the atmosphere, the product layer of ferrocoke becomes more porous, and the iron particles have higher possibilities to be oxidized by CO2.
AB - High-reactivity coke can improve the reaction efficiency in a blast furnace, hence reducing CO2 emission. Herein, traditional coke sample (QM), normal ferrocoke sample (TJ), and modified ferrocoke sample (LQ) are examined. The effect of water vapor on the gasification behaviors and structural evolution of the samples are investigated. Furthermore, the 3D structures of the coke matrix and iron particles are reconstructed by serial sectioning method. The results show that under a pure CO2 atmosphere, the TJ and LQ samples start the gasification reaction earlier than the QM sample. The TJ sample shows the highest reactivity. Under CO2 + H2O atmosphere, the conversion rate of TJ and LQ samples is slowed. The reoxidation of the metallic iron within the ferrocoke is found for the first time during gasification and causes this phenomenon. Under experimental conditions, when water vapor appears in the atmosphere, the product layer of ferrocoke becomes more porous, and the iron particles have higher possibilities to be oxidized by CO2.
KW - ferrocoke
KW - gasification reactions
KW - structural evolution
KW - water vapor
UR - https://pure.unileoben.ac.at/portal/en/publications/gasification-behaviors-of-ferrocoke-with-and-without-water-vapor(6786dfa2-b3e7-48e6-907d-615b6c046bbf).html
UR - http://www.scopus.com/inward/record.url?scp=85138618967&partnerID=8YFLogxK
U2 - 10.1002/srin.202200575
DO - 10.1002/srin.202200575
M3 - Article
SN - 1611-3683
VL - 93.2022
JO - Steel research international
JF - Steel research international
IS - 11
M1 - 2200575
ER -