JPS5449903A - Preheating system for air for combustion in hot stove - Google Patents

Preheating system for air for combustion in hot stove

Info

Publication number
JPS5449903A
JPS5449903A JP11716377A JP11716377A JPS5449903A JP S5449903 A JPS5449903 A JP S5449903A JP 11716377 A JP11716377 A JP 11716377A JP 11716377 A JP11716377 A JP 11716377A JP S5449903 A JPS5449903 A JP S5449903A
Authority
JP
Japan
Prior art keywords
temperature
air
preheater
combustion
waste gas
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
JP11716377A
Other languages
Japanese (ja)
Inventor
Keiichi Wakabayashi
Kazumi Inoue
Yoshio Kawashima
Susumu Nakamura
Nobuyuki Miyamoto
Akira Shiga
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 JP11716377A priority Critical patent/JPS5449903A/en
Publication of JPS5449903A publication Critical patent/JPS5449903A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B9/00—Stoves for heating the blast in blast furnaces
    • C21B9/14—Preheating the combustion air

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Air Supply (AREA)

Abstract

PURPOSE:To stabilize the temperature of the preheated air always at a constant temperature, by detecting the timperature of the waste gas from the hot stove entering into the preheater for the air for combustion in the hot stove for blast furnace and actuating the supplementary preheater when the lowering of temperature occurs. CONSTITUTION:The waste gas of high temperature from the hot stove 1 is released to the stack 8 through the intercepting valve 4 from the flue 3. In addition, the passage for leading the above gas to the stack 8 passing through the air preheater 9 is provided with the ducts 6 and 7. The air for combustion in the hot stove 1 passes through the air preheater 9, is heated with the waste gas and enters into the hot stove 1. At this time, the temperature of the waste gas entering into the preheater 9 is measured with the temperature detector 18 and is compared with the temperature of the temperature setter 16. At the case where the temperature of the waste gas is lower than the temperature of the setter 16, by controlling the operation of the supplementary preheater 14 with the combustion controller 17 on the basis of its signal, the waste gas is heated to the prescribed temperature. Accordingly, the temperature of the air for combustion passing through the air preheater 9 too is maintained always at a constant value, so that the amount of coke oven gas for combustion is saved and the state of operation of the furnace is stabilized.
JP11716377A 1977-09-29 1977-09-29 Preheating system for air for combustion in hot stove Pending JPS5449903A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11716377A JPS5449903A (en) 1977-09-29 1977-09-29 Preheating system for air for combustion in hot stove

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11716377A JPS5449903A (en) 1977-09-29 1977-09-29 Preheating system for air for combustion in hot stove

Publications (1)

Publication Number Publication Date
JPS5449903A true JPS5449903A (en) 1979-04-19

Family

ID=14705003

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11716377A Pending JPS5449903A (en) 1977-09-29 1977-09-29 Preheating system for air for combustion in hot stove

Country Status (1)

Country Link
JP (1) JPS5449903A (en)

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