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JPS55107710A - Direct reducing method of iron oxide by gas - Google Patents

Direct reducing method of iron oxide by gas

Info

Publication number
JPS55107710A
JPS55107710A JP1392579A JP1392579A JPS55107710A JP S55107710 A JPS55107710 A JP S55107710A JP 1392579 A JP1392579 A JP 1392579A JP 1392579 A JP1392579 A JP 1392579A JP S55107710 A JPS55107710 A JP S55107710A
Authority
JP
Japan
Prior art keywords
gas
heated
reducing
reduced
dehumidified
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.)
Pending
Application number
JP1392579A
Other languages
Japanese (ja)
Inventor
Takuya Maeda
Susumu Yamada
Mitsuharu Kishimoto
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.)
Kawasaki Heavy Industries Ltd
Original Assignee
Kawasaki Heavy Industries 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
Application filed by Kawasaki Heavy Industries Ltd filed Critical Kawasaki Heavy Industries Ltd
Priority to JP1392579A priority Critical patent/JPS55107710A/en
Publication of JPS55107710A publication Critical patent/JPS55107710A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • Y02P10/122—Reduction of greenhouse gas [GHG] emissions by capturing or storing CO2
    • 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]

Landscapes

  • Manufacture Of Iron (AREA)

Abstract

PURPOSE: To reuse the exhaust gas of the time when sponge iron is produced by reducing iron oxide raw materials such as iron ore and pellets, as reducing gas for sponge iron production again by removing moisture and CO2 from said gas thereby recovering its reducing power.
CONSTITUTION: Natural gas 1 and steam 3 are sent into a gas converting furnace 2, where it is heated to around 830°C and is converted to reducible gas composed of CO, H2. After this gas is dehumidified in a dehumidifier 7, it is heated to 700W850°C in a gas preheating furnace. Further, it is combined with the heated air from an air preheater 9. In a gas partial combustion chamber 11, part of CO and H2 is burnt to 900W1100°C and the gas is put in a reduction reaction furnace 12, where pellets, etc. are reduced to produce reduced iron. The exhaust gas is dehumidified 14 and preheated 8', after which it is partially burnt and heated by the high temperature air from the air preheater 9 in the gas partial combustion chamber 11', whereby the pellets, etc. in the second reduction reaction furnace 12' are partially reduced. The exhaust gas of this time is dehumidified 14', thence it is reduced of the amount of CO2 in a CO2 removing unit 16 to be recovered of reducing power again. It is then combined with the reducing gas entering the gas preheating furnace 8 and is reused.
COPYRIGHT: (C)1980,JPO&Japio
JP1392579A 1979-02-08 1979-02-08 Direct reducing method of iron oxide by gas Pending JPS55107710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1392579A JPS55107710A (en) 1979-02-08 1979-02-08 Direct reducing method of iron oxide by gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1392579A JPS55107710A (en) 1979-02-08 1979-02-08 Direct reducing method of iron oxide by gas

Publications (1)

Publication Number Publication Date
JPS55107710A true JPS55107710A (en) 1980-08-19

Family

ID=11846753

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1392579A Pending JPS55107710A (en) 1979-02-08 1979-02-08 Direct reducing method of iron oxide by gas

Country Status (1)

Country Link
JP (1) JPS55107710A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61104010A (en) * 1984-10-25 1986-05-22 Nippon Tekko Renmei Melt reduction method of iron ore
EP0969107A1 (en) * 1992-10-22 2000-01-05 Voest Alpine Industrieanlagenbau Gmbh Process for producing molten pig iron or molten steel pre-products and hot briquetted iron

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61104010A (en) * 1984-10-25 1986-05-22 Nippon Tekko Renmei Melt reduction method of iron ore
EP0969107A1 (en) * 1992-10-22 2000-01-05 Voest Alpine Industrieanlagenbau Gmbh Process for producing molten pig iron or molten steel pre-products and hot briquetted iron

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