BLOWING OR RE-BLOWING PROCESS OF BLAST FURNACE, AND BLAST FURNACE EQUIPMENT FOR SAME

Title:

BLOWING OR RE-BLOWING PROCESS OF BLAST FURNACE, AND BLAST FURNACE EQUIPMENT FOR SAME

Document Type and Number:

WIPO Patent Application WO/2022/119209

Kind Code:

A1

Abstract:

The present invention relates to a blowing or re-blowing process of a blast furnace, and blast furnace equipment for same. The present invention relates to a blowing or re-blowing process of a blast furnace, the process including the blast furnace and a gas purification section for purifying gas from the blast furnace, and provides a blowing or re-blowing process of a blast furnace, and blast furnace equipment for same, which: close a breather valve, and purge nitrogen and steam from a blast furnace and a gas purification section to generate, toward a clean gas vent line provided at the downstream side of the gas purification section, a flow of air remaining in an uptake, a downcomer and a clean gas transport line of the blast furnace; purify, into a clean gas state through the gas purification section, blast furnace gas generated by the operation or re-operation of the blast furnace, so as to discharge same through the clean gas vent line; and open a clean gas cut-off valve for clean gas transported to a gas holder through the clean gas transport line and close the clean gas vent line, if the pressure of the clean gas transport line exceeds the pressure of the gas holder while the clean gas is discharged through the clean gas vent line.

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Inventors:

AN TONG IL (KR)
PARK JONG SUNG (KR)
KIM HUI WON (KR)
CHO HAN JIN (KR)
KIM YOUNG HYUN (KR)
REINOUD JACOBUS VAN LAAR (NL)
LEE HO YOUNG (KR)

Application Number:

PCT/KR2021/017217

Publication Date:

June 09, 2022

Filing Date:

November 23, 2021

Export Citation:

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Assignee:

CHUNGWON METAL CO LTD (KR)
HYUNDAI STEEL CO (KR)
DANIELI CORUS BV (NL)

International Classes:

C21B7/00; C21B7/16; C21B9/12; F27D17/00

Foreign References:

KR102037032B1	2019-10-25
KR20020051629A	2002-06-29
KR20110120443A	2011-11-04
KR20050023886A	2005-03-10
JPS57155305A	1982-09-25

Attorney, Agent or Firm:

LEE, Jong Il (KR)

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