JPS57149417A - Direct-firing type heating furnace - Google Patents

Direct-firing type heating furnace

Info

Publication number
JPS57149417A
JPS57149417A JP3602281A JP3602281A JPS57149417A JP S57149417 A JPS57149417 A JP S57149417A JP 3602281 A JP3602281 A JP 3602281A JP 3602281 A JP3602281 A JP 3602281A JP S57149417 A JPS57149417 A JP S57149417A
Authority
JP
Japan
Prior art keywords
heated
heating furnace
concentration
combustible gas
furnace
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
JP3602281A
Other languages
Japanese (ja)
Other versions
JPS6356288B2 (en
Inventor
Kuniaki Honda
Kunihiro Funamoto
Hirota Akagi
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.)
Osaka Gas Co Ltd
Original Assignee
Osaka Gas Co 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 Osaka Gas Co Ltd filed Critical Osaka Gas Co Ltd
Priority to JP3602281A priority Critical patent/JPS57149417A/en
Publication of JPS57149417A publication Critical patent/JPS57149417A/en
Publication of JPS6356288B2 publication Critical patent/JPS6356288B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Tunnel Furnaces (AREA)

Abstract

PURPOSE: To heat a direct-firing type heating furnace under non-oxidizing condition at low cost by a method in which the CO concentration of a combustible gas is controlled to a set value and the combustible gas is injected in a placed where the open air is introduced into the heating furnace and also a material to be heated is heated to a comparatively high temperature.
CONSTITUTION: Plural injection ports 13 are provided below a place where air is introduced from outside into a heating furnace 1 and also a material 10 to be heated is heated to a comparatively high temperature, e.g., a heating zone 7 and soaking zone. Then, a combustible gas is injected from each injection port 13 through an electromagnetic valve 17, a flow rate control valve 16, and a check valve 14a and burned with oxygen in the furnace 1 to form non-oxidizing atmosphere in the furnace 1. In this case, to keep optimum non-oxidizing condition constant, the concentration of CO is detected by a detector 18 provided in the soaking zone 8 near the outlet 3 and put in a controller 19. The controller compares the detected value preset CO concentration to control the opening degree of the valve 16 in such a way as to equalize both values.
COPYRIGHT: (C)1982,JPO&Japio
JP3602281A 1981-03-12 1981-03-12 Direct-firing type heating furnace Granted JPS57149417A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3602281A JPS57149417A (en) 1981-03-12 1981-03-12 Direct-firing type heating furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3602281A JPS57149417A (en) 1981-03-12 1981-03-12 Direct-firing type heating furnace

Publications (2)

Publication Number Publication Date
JPS57149417A true JPS57149417A (en) 1982-09-16
JPS6356288B2 JPS6356288B2 (en) 1988-11-08

Family

ID=12458094

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3602281A Granted JPS57149417A (en) 1981-03-12 1981-03-12 Direct-firing type heating furnace

Country Status (1)

Country Link
JP (1) JPS57149417A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01252723A (en) * 1988-03-31 1989-10-09 Tokyo Netsushori Kogyo Kk Method for preventing oxidation of atmosphere

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01252723A (en) * 1988-03-31 1989-10-09 Tokyo Netsushori Kogyo Kk Method for preventing oxidation of atmosphere

Also Published As

Publication number Publication date
JPS6356288B2 (en) 1988-11-08

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