JPS5533529A - Combustion control method for combustion equipment which allows penetration of outside air - Google Patents

Combustion control method for combustion equipment which allows penetration of outside air

Info

Publication number
JPS5533529A
JPS5533529A JP10612478A JP10612478A JPS5533529A JP S5533529 A JPS5533529 A JP S5533529A JP 10612478 A JP10612478 A JP 10612478A JP 10612478 A JP10612478 A JP 10612478A JP S5533529 A JPS5533529 A JP S5533529A
Authority
JP
Japan
Prior art keywords
flow rate
setpoint
oxygen concentration
adjuster
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.)
Granted
Application number
JP10612478A
Other languages
Japanese (ja)
Other versions
JPS5843658B2 (en
Inventor
Sakae Tezuka
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP10612478A priority Critical patent/JPS5843658B2/en
Publication of JPS5533529A publication Critical patent/JPS5533529A/en
Publication of JPS5843658B2 publication Critical patent/JPS5843658B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D11/00—Process control or regulation for heat treatments

Abstract

PURPOSE:To conduct perfectly automatic control of the optimum waste gas oxygen concentration with precision by controlling the oxygen concentration in the waste gas through selective use of an fuel-air ratio operation and a furnace pressure operation according to the fuel flow rate. CONSTITUTION:A waste gas oxygen concentration adjuster 1 generates an operation output MVI according to the difference between an oxygen concentration setpoint and the waste gas oxygen concentration measurement value. When the fuel flow rate is higher than the flow rate setpoint set on a fuel flow rate lower-limit comparator 2, the output of the adjuster 1 is changed over to ms-side by a selector switch 3, and the value of PS is kept at PN. When the fuel flow rate is lower than the flow rate lower-limit setpoint, the switch 3 is changed over to PS-side, and the ms is kept at the value directly before the change-over. Setpoint signals are fed through an upper/lower-limit restrictor 4 to a furnace pressure adjuster 5 and through a contact-fitted upper/lower-limit restrictor 6 to a ratio setter 8. A setpoint signal is fed from a theoretical air amount computer 7 to an air flow rate adjuster 9, and the combustion air is adjusted at the setpoint.
JP10612478A 1978-08-30 1978-08-30 Combustion control method for combustion equipment where outside air can enter Expired JPS5843658B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10612478A JPS5843658B2 (en) 1978-08-30 1978-08-30 Combustion control method for combustion equipment where outside air can enter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10612478A JPS5843658B2 (en) 1978-08-30 1978-08-30 Combustion control method for combustion equipment where outside air can enter

Publications (2)

Publication Number Publication Date
JPS5533529A true JPS5533529A (en) 1980-03-08
JPS5843658B2 JPS5843658B2 (en) 1983-09-28

Family

ID=14425673

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10612478A Expired JPS5843658B2 (en) 1978-08-30 1978-08-30 Combustion control method for combustion equipment where outside air can enter

Country Status (1)

Country Link
JP (1) JPS5843658B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55131625A (en) * 1979-03-30 1980-10-13 Sumitomo Metal Ind Ltd Combution control method
CN106801139A (en) * 2017-01-19 2017-06-06 本钢板材股份有限公司 Annealing furnace optimization of air-fuel ratio method
JP2020139698A (en) * 2019-02-28 2020-09-03 株式会社神戸製鋼所 Air amount control method of heating furnace
JP2022176423A (en) * 2022-08-29 2022-11-29 中外炉工業株式会社 Combustion facility
JP2022176424A (en) * 2022-08-31 2022-11-29 中外炉工業株式会社 Combustion control method of combustion facility
JP2022177842A (en) * 2022-08-29 2022-12-01 中外炉工業株式会社 Combustion facility

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55131625A (en) * 1979-03-30 1980-10-13 Sumitomo Metal Ind Ltd Combution control method
JPS6145128B2 (en) * 1979-03-30 1986-10-06 Sumitomo Kinzoku Kogyo Kk
CN106801139A (en) * 2017-01-19 2017-06-06 本钢板材股份有限公司 Annealing furnace optimization of air-fuel ratio method
JP2020139698A (en) * 2019-02-28 2020-09-03 株式会社神戸製鋼所 Air amount control method of heating furnace
JP2022176423A (en) * 2022-08-29 2022-11-29 中外炉工業株式会社 Combustion facility
JP2022177842A (en) * 2022-08-29 2022-12-01 中外炉工業株式会社 Combustion facility
WO2024048028A1 (en) * 2022-08-29 2024-03-07 中外炉工業株式会社 Combustion facility
JP2022176424A (en) * 2022-08-31 2022-11-29 中外炉工業株式会社 Combustion control method of combustion facility

Also Published As

Publication number Publication date
JPS5843658B2 (en) 1983-09-28

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