JPS54103716A - Re-use method of exhaust gas for shaft furnace type iron making method - Google Patents

Re-use method of exhaust gas for shaft furnace type iron making method

Info

Publication number
JPS54103716A
JPS54103716A JP1107878A JP1107878A JPS54103716A JP S54103716 A JPS54103716 A JP S54103716A JP 1107878 A JP1107878 A JP 1107878A JP 1107878 A JP1107878 A JP 1107878A JP S54103716 A JPS54103716 A JP S54103716A
Authority
JP
Japan
Prior art keywords
exhaust gas
shaft furnace
furnace
cooling
reduction
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.)
Granted
Application number
JP1107878A
Other languages
Japanese (ja)
Other versions
JPS5934762B2 (en
Inventor
Tetsuo Horie
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.)
IHI Corp
Original Assignee
IHI Corp
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 IHI Corp filed Critical IHI Corp
Priority to JP53011078A priority Critical patent/JPS5934762B2/en
Publication of JPS54103716A publication Critical patent/JPS54103716A/en
Publication of JPS5934762B2 publication Critical patent/JPS5934762B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft furnaces
    • C21B13/029—Introducing coolant gas in the shaft furnaces
    • 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
    • C21B2100/22—Increasing the gas reduction potential of recycled exhaust gases by reforming
    • 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
    • C21B2100/26—Increasing the gas reduction potential of recycled exhaust gases by adding additional fuel in recirculation pipes
    • 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
    • C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
    • C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
    • 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
    • C21B2100/64—Controlling the physical properties of the gas, e.g. pressure or temperature

Landscapes

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

Abstract

PURPOSE:To save exhaust gas cooling water while improving the thermal efficiency of the gas by employing exhaust gas obtained in the reduction of iron ore or the like with the shaft furnace for cooling the reduced iron and the fuel of reforming furnaces. CONSTITUTION:A high temperature reforming furnace gas 28 mainly composed of CO and H2 are blown into a shaft furnace 1 to reduce material 30 such as iron ore and pellet, thereby producing reduced iron. In the process, a pre-reduction chamber 7 is provided in the furnace. The exhaust gas which has passed through this chamber contains large amount of H2O produced in the reduction of the iron ore by H2. The exhaust gas from a sub-exhaust port 11 via the pre-reduction chamber 7 still large amount of H2 and CO. The former passes through a Venturi scrubber 8 and cooler for removal of dust and cooling. Thereafter, it is blown from below the shaft furnace for use in cooling reduced iron. The latter can be effectively utilized for the fuel of a reforming furnace 25 as remaining hot without being cooled as CO and H2 are left in large amount.
JP53011078A 1978-02-03 1978-02-03 Method for reusing exhaust gas in shaft furnace steelmaking method Expired JPS5934762B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53011078A JPS5934762B2 (en) 1978-02-03 1978-02-03 Method for reusing exhaust gas in shaft furnace steelmaking method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53011078A JPS5934762B2 (en) 1978-02-03 1978-02-03 Method for reusing exhaust gas in shaft furnace steelmaking method

Publications (2)

Publication Number Publication Date
JPS54103716A true JPS54103716A (en) 1979-08-15
JPS5934762B2 JPS5934762B2 (en) 1984-08-24

Family

ID=11767937

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53011078A Expired JPS5934762B2 (en) 1978-02-03 1978-02-03 Method for reusing exhaust gas in shaft furnace steelmaking method

Country Status (1)

Country Link
JP (1) JPS5934762B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6160812A (en) * 1984-08-28 1986-03-28 コルフ　エンジニアリング　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング Method and apparatus for direct reduction of sulfur-containing iron ore

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03129377U (en) * 1990-04-10 1991-12-26
JPH04144514A (en) * 1990-10-05 1992-05-19 Koichi Shimizu Hanging bag for housing clothing

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6160812A (en) * 1984-08-28 1986-03-28 コルフ　エンジニアリング　ゲゼルシヤフト　ミツト　ベシユレンクテル　ハフツング Method and apparatus for direct reduction of sulfur-containing iron ore

Also Published As

Publication number Publication date
JPS5934762B2 (en) 1984-08-24

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