Title:
BLAST FURNACE OPERATION METHOD AND AUXILIARY EQUIPMENT FOR BLAST FURNACE
Document Type and Number:
WIPO Patent Application WO/2021/149401
Kind Code:
A1
Abstract:
The present invention has: a step in which a combustion-assisting gas is used and at least some blast furnace gas is combusted in a combustion facility; a step in which flue gas discharged from the combustion facility is used and regenerated methane gas is generated; and a step in which ventilation gas and a reducing agent are sucked into the blast furnace from a furnace tuyere. Oxygen gas is used as the ventilation gas and regenerated methane gas is used in at least part of the reducing agent. In addition, oxygen gas is used for the combustion-assisting gas for the combustion facility.
Inventors:
TAKAHASHI KOICHI (JP)
NOUCHI TAIHEI (JP)
OZAWA SUMITO (JP)
KAWASHIRI YUKI (JP)
MORITA YUYA (JP)
NOUCHI TAIHEI (JP)
OZAWA SUMITO (JP)
KAWASHIRI YUKI (JP)
MORITA YUYA (JP)
Application Number:
PCT/JP2020/046608
Publication Date:
July 29, 2021
Filing Date:
December 14, 2020
Export Citation:
Assignee:
JFE STEEL CORP (JP)
International Classes:
C21B5/00
Foreign References:
| JP2016222949A | 2016-12-28 | |||
| JP2014005510A | 2014-01-16 | |||
| JP2011225969A | 2011-11-10 | |||
| JP2014005510A | 2014-01-16 |
Other References:
See also references of EP 4095268A4
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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