GB1344714A - Blast furnaces - Google Patents

Blast furnaces

Info

Publication number
GB1344714A
GB1344714A GB2983971A GB2983971A GB1344714A GB 1344714 A GB1344714 A GB 1344714A GB 2983971 A GB2983971 A GB 2983971A GB 2983971 A GB2983971 A GB 2983971A GB 1344714 A GB1344714 A GB 1344714A
Authority
GB
United Kingdom
Prior art keywords
gas
line
charge
regenerator
extracted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2983971A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Engineering Corp
Original Assignee
Nippon Kokan Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19702033377 external-priority patent/DE2033377C3/en
Application filed by Nippon Kokan Ltd filed Critical Nippon Kokan Ltd
Publication of GB1344714A publication Critical patent/GB1344714A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B5/00—Making pig-iron in the blast furnace
    • C21B5/06—Making pig-iron in the blast furnace using top gas in the blast furnace process
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/20—Increasing the gas reduction potential of recycled exhaust gases
    • C21B2100/24—Increasing the gas reduction potential of recycled exhaust gases by shift reactions
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
    • C21B2100/60—Process control or energy utilisation in the manufacture of iron or steel
    • C21B2100/66—Heat exchange
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/143—Reduction of greenhouse gas [GHG] emissions of methane [CH4]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
  • Manufacture Of Iron (AREA)

Abstract

1344714 Blast furnaces NIPPON KOKAN KK 25 June 1971 [6 July 1970] 29839/71 Heading F4B [Also in Division C7] In operating a blast furnace 1, gas extracted peripherally at 18 above the charge surface 17 and at a temperature up to 700‹ C. is recirculated to a point above the softening and melting zone 15 above the tuyeres 8 via a line 10, fan 3, gas regenerator 4 and line 14, further gas extracted from the middle of the charge passing off by a line 9 and being divided, part 9a being used to fire a hot blast store 2, part 9b to fire the regenerator 4 and part 9c for other external uses. A line 11 supplies methane to mix with the recirculated top gas, the gas regenerator converting any H 2 O or CO 2 into H 2 or CO. The recycled gas may be extracted through pipes extending vertically in the furnace near the stack wall and terminating just above the charge surface or through pipes with mouths within the upper part of the charge. Owing to its extraction and return near the stack wall the recycled gas contains less nitrogen than the unrecycled gas.
GB2983971A 1970-07-06 1971-06-25 Blast furnaces Expired GB1344714A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19702033377 DE2033377C3 (en) 1970-07-06 Process for operating a blast furnace with recirculated, regenerated furnace gas

Publications (1)

Publication Number Publication Date
GB1344714A true GB1344714A (en) 1974-01-23

Family

ID=5775911

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2983971A Expired GB1344714A (en) 1970-07-06 1971-06-25 Blast furnaces

Country Status (10)

Country Link
JP (1) JPS5320443B1 (en)
BE (1) BE769181A (en)
CA (1) CA954691A (en)
FR (1) FR2098199B1 (en)
GB (1) GB1344714A (en)
IT (1) IT943518B (en)
LU (1) LU63470A1 (en)
NL (1) NL157057B (en)
SE (1) SE371210B (en)
ZA (1) ZA714184B (en)

Also Published As

Publication number Publication date
CA954691A (en) 1974-09-17
SE371210B (en) 1974-11-11
ZA714184B (en) 1972-03-29
DE2033377B2 (en) 1975-08-07
IT943518B (en) 1973-04-10
FR2098199A1 (en) 1972-03-10
NL157057B (en) 1978-06-15
DE2033377A1 (en) 1972-01-27
LU63470A1 (en) 1971-11-12
NL7108765A (en) 1972-01-10
JPS5320443B1 (en) 1978-06-27
FR2098199B1 (en) 1974-11-08
BE769181A (en) 1971-11-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee