Title:
BLAST FURNACE OPERATION METHOD
Document Type and Number:
WIPO Patent Application WO/2021/107091
Kind Code:
A1
Abstract:
According to one aspect of the present invention, provided is a blast furnace operation method characterized in that a high-concentration hydrogen-containing gas which contains at least 80 mol% of hydrogen gas, is blown from a tuyere under certain conditions such as: a condition in which the blowing temperature of the high-concentration hydrogen-containing gas is room temperature to 300 °C, and the blown amount of hydrogen gas in the high-concentration hydrogen-containing gas is 200 Nm3/t to 500 Nm3/t; a condition in which the blowing temperature of the high-concentration hydrogen-containing gas is 300 °C to 600 °C, and the blown amount of hydrogen gas in the high-concentration hydrogen-containing gas is at least 145 Nm3/t; or a condition in which the blowing temperature of the high-concentration hydrogen-containing gas is 600 °C to 900 °C, and the blown amount of the high-concentration hydrogen-containing gas is at least 125 Nm3/t.
Inventors:
SAKAI HIROSHI (JP)
NAKANO KAORU (JP)
NAKANO KAORU (JP)
Application Number:
PCT/JP2020/044217
Publication Date:
June 03, 2021
Filing Date:
November 27, 2020
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
JFE STEEL CORP (JP)
KOBE STEEL LTD (JP)
NIPPON STEEL ENG CO LTD (JP)
JFE STEEL CORP (JP)
KOBE STEEL LTD (JP)
NIPPON STEEL ENG CO LTD (JP)
International Classes:
C21B5/00
Domestic Patent References:
WO2017134829A1 | 2017-08-10 |
Foreign References:
JPS5887210A | 1983-05-25 | |||
JPH0657315A | 1994-03-01 | |||
JP2019216568A | 2019-12-19 | |||
JP2020092467A | 2020-06-11 | |||
JPS6019893B2 | 1985-05-18 | |||
JP5987773B2 | 2016-09-07 | |||
JP5050706B2 | 2012-10-17 | |||
JP5770124B2 | 2015-08-26 | |||
JPS5315732B2 | 1978-05-26 | |||
JPS5851828B2 | 1983-11-18 | |||
EP3425070A1 | 2019-01-09 |
Other References:
KOUJI TAKATANITAKANOBU INADAYUTAKA UJISAWA: "Three-dimensional Dynamic Simulator for Blast Furnace", ISIJ INTERNATIONAL, vol. 39, no. 1, 1999, pages 15 - 22
YILMAZ CAN, WENDELSTORF JENS, TUREK THOMAS: "Modeling and simulation of hydrogen injection into a blast furnace to reduce carbon dioxide emissions", JOURNAL OF CLEANER PRODUCTION, vol. 154, 1 June 2017 (2017-06-01), AMSTERDAM, NL , pages 488 - 501, XP055957384, ISSN: 0959-6526, DOI: 10.1016/j.jclepro.2017.03.162
See also references of EP 4067510A4
YILMAZ CAN, WENDELSTORF JENS, TUREK THOMAS: "Modeling and simulation of hydrogen injection into a blast furnace to reduce carbon dioxide emissions", JOURNAL OF CLEANER PRODUCTION, vol. 154, 1 June 2017 (2017-06-01), AMSTERDAM, NL , pages 488 - 501, XP055957384, ISSN: 0959-6526, DOI: 10.1016/j.jclepro.2017.03.162
See also references of EP 4067510A4
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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