Title:
熱風炉装置および熱風炉運転方法
Document Type and Number:
Japanese Patent JP6954824
Kind Code:
B2
Abstract:
A hot-blast stove system (1) includes: a hot-blast stove (4) for performing an on-blast operation for delivering a hot blast to a blast furnace (2) and an on-gas operation for combusting a fuel gas in the hot-blast stove; a fuel gas supply line (5) for supplying a BFG produced by the blast furnace (2) to the hot-blast stove (4) as the fuel gas; and a blower (52) provided in the fuel gas supply line (5) and configured to raise a pressure of the BFG. The fuel gas supply line (5) takes out the BFG from a part of a blast-furnace-top-gas recovery line (3) downstream of a top pressure recovery turbine system (35), the blast-furnace-top-gas recovery line (3) being configured to take out the BFG from a furnace top (21) of the blast furnace (2). A power of the blower (52) is supplied from a waste pressure recovery turbine system (441) for recovering a waste pressure and a waste heat from an waste gas of the hot-blast stove (4) during the on-gas operation.
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Inventors:
Kengo Usui
Shoji Kodate
Shoji Kodate
Application Number:
JP2017242038A
Publication Date:
October 27, 2021
Filing Date:
December 18, 2017
Export Citation:
Assignee:
Nippon Steel Engineering Co., Ltd.
International Classes:
C21B9/00; C21B5/06; C21B7/00; F27D17/00
Domestic Patent References:
| JP60089258U | ||||
| JP55122812A | ||||
| JP57126906A | ||||
| JP2016204728A | ||||
| JP54161505A |
Attorney, Agent or Firm:
Intellectual Property Office