JPS5629602A - Control of top pressure of blast furnace - Google Patents

Control of top pressure of blast furnace

Info

Publication number
JPS5629602A
JPS5629602A JP10470579A JP10470579A JPS5629602A JP S5629602 A JPS5629602 A JP S5629602A JP 10470579 A JP10470579 A JP 10470579A JP 10470579 A JP10470579 A JP 10470579A JP S5629602 A JPS5629602 A JP S5629602A
Authority
JP
Japan
Prior art keywords
pressure
control
blast furnace
top pressure
deviation
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
JP10470579A
Other languages
Japanese (ja)
Inventor
Takeji Asai
Atsuhiro Mizota
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.)
Hitachi Zosen Corp
Nippon Steel Corp
Original Assignee
Hitachi Zosen Corp
Sumitomo Metal 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 Hitachi Zosen Corp, Sumitomo Metal Industries Ltd filed Critical Hitachi Zosen Corp
Priority to JP10470579A priority Critical patent/JPS5629602A/en
Publication of JPS5629602A publication Critical patent/JPS5629602A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/007—Controlling or regulating of the top pressure

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Blast Furnaces (AREA)

Abstract

PURPOSE:To automatically keep the top pressure of the blast furnace constant by a method in which blast furnace gas is passed through plurally parallelized dust collectors into a regulating valve provided in its discharge path to detect a deviation between the top pressure and a set pressure, and then the said regulating valve is controlled by the deviation signal. CONSTITUTION:In the control of the top pressure of the blast furnace 3, waste gas from the furnace top is passed through the plurally parallelized dust collectors 8A-8C through path 4, a dust remover 5, and branched pipes 6A-6C and then introduced through the regulating valves 20A-20C and main discharge pipe 10 into a gas holder 11. In this case, the top pressure detection signal 13 from a detector 12 is put in a pressure regulator 14 and the deviation signal 15 from a set pressure is sent to a preliminary pressure regulator 16, where a preliminary pressure signal 18 is compared with the deviation signal 15 and the deviation signals 19A- 19C control the regulating valves 20A-20C in an interlocking manner (by synchronous control) or a stepping manner (one-by-one control of the valve), whereby keeping the top pressure at a given pressure.
JP10470579A 1979-08-16 1979-08-16 Control of top pressure of blast furnace Pending JPS5629602A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10470579A JPS5629602A (en) 1979-08-16 1979-08-16 Control of top pressure of blast furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10470579A JPS5629602A (en) 1979-08-16 1979-08-16 Control of top pressure of blast furnace

Publications (1)

Publication Number Publication Date
JPS5629602A true JPS5629602A (en) 1981-03-25

Family

ID=14387890

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10470579A Pending JPS5629602A (en) 1979-08-16 1979-08-16 Control of top pressure of blast furnace

Country Status (1)

Country Link
JP (1) JPS5629602A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100461508B1 (en) * 2000-06-24 2004-12-13 주식회사 포스코 multi top gas pressure control method
KR100993956B1 (en) * 2003-11-14 2010-11-11 주식회사 포스코 An apparatus for controlling top gas pressure when a top gas recovery plant is running
WO2022213578A1 (en) * 2021-04-08 2022-10-13 中冶南方工程技术有限公司 Blast furnace top pressure-equalizing gas purification and recovery device and process

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100461508B1 (en) * 2000-06-24 2004-12-13 주식회사 포스코 multi top gas pressure control method
KR100993956B1 (en) * 2003-11-14 2010-11-11 주식회사 포스코 An apparatus for controlling top gas pressure when a top gas recovery plant is running
WO2022213578A1 (en) * 2021-04-08 2022-10-13 中冶南方工程技术有限公司 Blast furnace top pressure-equalizing gas purification and recovery device and process

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