GB1414618A - Apparatus for generating protective atmospheres for use in furnaces - Google Patents

Apparatus for generating protective atmospheres for use in furnaces

Info

Publication number
GB1414618A
GB1414618A GB4985571A GB4985571A GB1414618A GB 1414618 A GB1414618 A GB 1414618A GB 4985571 A GB4985571 A GB 4985571A GB 4985571 A GB4985571 A GB 4985571A GB 1414618 A GB1414618 A GB 1414618A
Authority
GB
United Kingdom
Prior art keywords
protective atmosphere
heating tube
gases
chamber
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.)
Expired
Application number
GB4985571A
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.)
ACTRIC Ltd
Original Assignee
ACTRIC 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 ACTRIC Ltd filed Critical ACTRIC Ltd
Priority to GB4985571A priority Critical patent/GB1414618A/en
Priority to US00300355A priority patent/US3804580A/en
Priority to DE2252915A priority patent/DE2252915A1/en
Publication of GB1414618A publication Critical patent/GB1414618A/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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere
    • C21D1/763—Adjusting the composition of the atmosphere using a catalyst

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Furnace Details (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)

Abstract

1414618 Creating special atmospheres in furnaces ACTRIC Ltd 16 Oct 1972 [27 Oct 1971] 49855/71 Heading F4B A protective atmosphere is produced in a furnace by a heating tube 11 in the furnace chamber, in which fuel is burned in air, the heat generated being radiated to the chamber wall and workpieces in the chamber, exhaust gases being conveyed by an outlet duct 14 from the heating tube to a heat exchanger 15 in which the gases are cooled to remove water by condensation, the de-watered gases being conveyed into the furnace chamber to act as a protective atmosphere. The heating tube and/or surrounding tube 21 may contain nickel which acts as a catalyst for the reactions taking place therein. Additional fuel may be added to the returning gases at 19, a reaction taking place in the heated channel 21 to produce the desired protective atmosphere. Similar apparatus may be used for producing a protective atmosphere for other uses, e.g. for filling the tanks of an oil tanker when the cargo is discharged to prevent risk of fire. In this case the heating tube is placed either inside or outside a heating chamber which receives a fluid to be heated, e.g. the water which has already been used for cooling in the heat exchanger. Fuel gas is added to the dewatered exhaust gases as before to react by contact with the hot surface of the heating tube as before to produce the desired protective atmosphere.
GB4985571A 1971-10-27 1971-10-27 Apparatus for generating protective atmospheres for use in furnaces Expired GB1414618A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB4985571A GB1414618A (en) 1971-10-27 1971-10-27 Apparatus for generating protective atmospheres for use in furnaces
US00300355A US3804580A (en) 1971-10-27 1972-10-24 Apparatus and method for generating protective atmospheres
DE2252915A DE2252915A1 (en) 1971-10-27 1972-10-27 DEVICE AND METHOD FOR CREATING A PROTECTIVE ATMOSPHERE FOR A FURNACE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4985571A GB1414618A (en) 1971-10-27 1971-10-27 Apparatus for generating protective atmospheres for use in furnaces

Publications (1)

Publication Number Publication Date
GB1414618A true GB1414618A (en) 1975-11-19

Family

ID=10453793

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4985571A Expired GB1414618A (en) 1971-10-27 1971-10-27 Apparatus for generating protective atmospheres for use in furnaces

Country Status (3)

Country Link
US (1) US3804580A (en)
DE (1) DE2252915A1 (en)
GB (1) GB1414618A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4272239A (en) * 1979-11-05 1981-06-09 Midland-Ross Corporation Direct heating of heat treat furnace chamber

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1802000A (en) * 1928-09-17 1931-04-21 William Swindell & Brothers Furnace
US2124764A (en) * 1935-03-25 1938-07-26 Illinois Tool Works Method and apparatus for producing neutral atmosphere in heat treating furnaces
US2275106A (en) * 1939-02-20 1942-03-03 Carl I Hayes Circulation of heat treatment atmospheres

Also Published As

Publication number Publication date
US3804580A (en) 1974-04-16
DE2252915A1 (en) 1973-05-10

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees