FR2447527A1 - Circulation of air or gas in heat treatment furnace - by pumping in cooled gas which is heated by outflowing gas - Google Patents

Circulation of air or gas in heat treatment furnace - by pumping in cooled gas which is heated by outflowing gas

Info

Publication number
FR2447527A1
FR2447527A1 FR7902158A FR7902158A FR2447527A1 FR 2447527 A1 FR2447527 A1 FR 2447527A1 FR 7902158 A FR7902158 A FR 7902158A FR 7902158 A FR7902158 A FR 7902158A FR 2447527 A1 FR2447527 A1 FR 2447527A1
Authority
FR
France
Prior art keywords
gas
heat treatment
air
pumping
circulation
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.)
Withdrawn
Application number
FR7902158A
Other languages
French (fr)
Inventor
Roland Kissel
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.)
Heurtey Metallurgie SA
Original Assignee
Heurtey Metallurgie SA
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 Heurtey Metallurgie SA filed Critical Heurtey Metallurgie SA
Priority to FR7902158A priority Critical patent/FR2447527A1/en
Publication of FR2447527A1 publication Critical patent/FR2447527A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)

Abstract

In order to maintain a uniform temp. throughout a heat treatment furnace it is necessary to circulate the air inside the furnace. This is usually done by means of a fan but it is extremely difficult to operate fans at heat treatment temps. of 1200 degrees C. Problem is solved by extracting the air or other gas forming the furnace atmosphere at the outlets and passing this gas through a heat exchanger to heat the incoming gas. The incoming gas is delivered by a pump which draws its supply from the gas which has passed through the cooler.
FR7902158A 1979-01-29 1979-01-29 Circulation of air or gas in heat treatment furnace - by pumping in cooled gas which is heated by outflowing gas Withdrawn FR2447527A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7902158A FR2447527A1 (en) 1979-01-29 1979-01-29 Circulation of air or gas in heat treatment furnace - by pumping in cooled gas which is heated by outflowing gas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7902158A FR2447527A1 (en) 1979-01-29 1979-01-29 Circulation of air or gas in heat treatment furnace - by pumping in cooled gas which is heated by outflowing gas

Publications (1)

Publication Number Publication Date
FR2447527A1 true FR2447527A1 (en) 1980-08-22

Family

ID=9221285

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7902158A Withdrawn FR2447527A1 (en) 1979-01-29 1979-01-29 Circulation of air or gas in heat treatment furnace - by pumping in cooled gas which is heated by outflowing gas

Country Status (1)

Country Link
FR (1) FR2447527A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB532314A (en) * 1939-07-14 1941-01-22 Gas Light & Coke Co Improvements in or relating to muffle furnaces
US2930825A (en) * 1957-07-30 1960-03-29 United States Steel Corp Annealing furnace
FR2372898A1 (en) * 1976-12-06 1978-06-30 Thermo Electron Corp RADIATION HEATING PROCESS AND DEVICE AND JET IMPACT
DE2700922A1 (en) * 1977-01-08 1978-07-13 Rudolf Schlicker Ceramic firing furnace with cooling and heating system - uses preheated air and injector for exhaust gas return to furnace

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB532314A (en) * 1939-07-14 1941-01-22 Gas Light & Coke Co Improvements in or relating to muffle furnaces
US2930825A (en) * 1957-07-30 1960-03-29 United States Steel Corp Annealing furnace
FR2372898A1 (en) * 1976-12-06 1978-06-30 Thermo Electron Corp RADIATION HEATING PROCESS AND DEVICE AND JET IMPACT
DE2700922A1 (en) * 1977-01-08 1978-07-13 Rudolf Schlicker Ceramic firing furnace with cooling and heating system - uses preheated air and injector for exhaust gas return to furnace

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Legal Events

Date Code Title Description
ST Notification of lapse