JPS55141511A - Waste gas recovering method in converter waste gas treating apparatus - Google Patents

Waste gas recovering method in converter waste gas treating apparatus

Info

Publication number
JPS55141511A
JPS55141511A JP4674079A JP4674079A JPS55141511A JP S55141511 A JPS55141511 A JP S55141511A JP 4674079 A JP4674079 A JP 4674079A JP 4674079 A JP4674079 A JP 4674079A JP S55141511 A JPS55141511 A JP S55141511A
Authority
JP
Japan
Prior art keywords
waste gas
time
gas
valve
unit
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
JP4674079A
Other languages
Japanese (ja)
Other versions
JPS6043886B2 (en
Inventor
Shun Fukushima
Kunio Arishima
Takeya Fukumoto
Satoru Hirabayashi
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.)
Fuji Electric Co Ltd
Nippon Steel Corp
Original Assignee
Fuji Electric Co Ltd
Nippon Steel 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 Fuji Electric Co Ltd, Nippon Steel Corp filed Critical Fuji Electric Co Ltd
Priority to JP4674079A priority Critical patent/JPS6043886B2/en
Publication of JPS55141511A publication Critical patent/JPS55141511A/en
Publication of JPS6043886B2 publication Critical patent/JPS6043886B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/28—Manufacture of steel in the converter
    • C21C5/38—Removal of waste gases or dust
    • C21C5/40—Offtakes or separating apparatus for converter waste gases or dust

Abstract

PURPOSE:To recover valuable gas efficiently by controlling a change-over valve etc. by beforehand estimating the time when the percentage of 02 decreases to the desired low value at which waste gas recovery becomes possible from the measured O2 gas in waste gas and further estimating the time when the waste gas reaches the specific place in the flue from the measured waste gas flow value. CONSTITUTION:The component gas density from the waste gas analyzer disposed at the place B in the flue, the measured flow value from a flowmeter 14, the percentage of O2 from the O2 analyzer disposed in the place A, and other informations such as whether the system is within the time region suited for waste gas recovery, and mechanical conditions of change-over valve 12 and recovery valve 11 are normal etc. are input to a sequence control unit 15. Next, the unit 15 examines all of these and sends a control signal to control the opening and closing of the change-over valve 12 and recovery valve 11. The unit 15 judges the control conditions that the percentage of O2 has been lowered to 1% or less at the time when the predicted time is reached and therefore the delay time required for O2 gas analysis is averted. Further, in the unit 15, the time when the recoverable waste gas of 1% or less in O2 reaches just before the valve 12 may be predicted and based on this prediction, the valves 11, 12 are opened and closed.
JP4674079A 1979-04-18 1979-04-18 Waste gas recovery method in converter waste gas treatment equipment Expired JPS6043886B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4674079A JPS6043886B2 (en) 1979-04-18 1979-04-18 Waste gas recovery method in converter waste gas treatment equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4674079A JPS6043886B2 (en) 1979-04-18 1979-04-18 Waste gas recovery method in converter waste gas treatment equipment

Publications (2)

Publication Number Publication Date
JPS55141511A true JPS55141511A (en) 1980-11-05
JPS6043886B2 JPS6043886B2 (en) 1985-10-01

Family

ID=12755717

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4674079A Expired JPS6043886B2 (en) 1979-04-18 1979-04-18 Waste gas recovery method in converter waste gas treatment equipment

Country Status (1)

Country Link
JP (1) JPS6043886B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60256790A (en) * 1984-06-04 1985-12-18 川崎重工業株式会社 Treater for exhaust gas from metallurgical furnace
US4593561A (en) * 1983-08-18 1986-06-10 Alexander Gavrilovic Fluid parameter measurement system
KR100717260B1 (en) * 2005-07-05 2007-05-15 주식회사 포스코 Method for collecting converter gas
KR100832418B1 (en) * 2001-11-12 2008-05-26 주식회사 포스코 Method and apparatus for optimum control of operation of induced draft fan in molten metal purifying process utilizing furnace with oxygen lance
JP2012219289A (en) * 2011-04-05 2012-11-12 Nippon Steel Corp Method and equipment for recovering converter gas
JP2014169483A (en) * 2013-03-04 2014-09-18 Nippon Steel & Sumitomo Metal Method for recovering converter exhaust gas

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4593561A (en) * 1983-08-18 1986-06-10 Alexander Gavrilovic Fluid parameter measurement system
JPS60256790A (en) * 1984-06-04 1985-12-18 川崎重工業株式会社 Treater for exhaust gas from metallurgical furnace
KR100832418B1 (en) * 2001-11-12 2008-05-26 주식회사 포스코 Method and apparatus for optimum control of operation of induced draft fan in molten metal purifying process utilizing furnace with oxygen lance
KR100717260B1 (en) * 2005-07-05 2007-05-15 주식회사 포스코 Method for collecting converter gas
JP2012219289A (en) * 2011-04-05 2012-11-12 Nippon Steel Corp Method and equipment for recovering converter gas
JP2014169483A (en) * 2013-03-04 2014-09-18 Nippon Steel & Sumitomo Metal Method for recovering converter exhaust gas

Also Published As

Publication number Publication date
JPS6043886B2 (en) 1985-10-01

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