WO2007114853A3 - Deoxygenation of furnaces with hydrogen-containing atmospheres - Google Patents

Deoxygenation of furnaces with hydrogen-containing atmospheres Download PDF

Info

Publication number
WO2007114853A3
WO2007114853A3 PCT/US2006/060764 US2006060764W WO2007114853A3 WO 2007114853 A3 WO2007114853 A3 WO 2007114853A3 US 2006060764 W US2006060764 W US 2006060764W WO 2007114853 A3 WO2007114853 A3 WO 2007114853A3
Authority
WO
WIPO (PCT)
Prior art keywords
deoxygenation
furnaces
hydrogen
containing atmospheres
atmosphere
Prior art date
Application number
PCT/US2006/060764
Other languages
French (fr)
Other versions
WO2007114853A2 (en
Inventor
Donald J Bowe
Minfa Lin
Robert J Edwards
Original Assignee
Air Prod & Chem
Donald J Bowe
Minfa Lin
Robert J Edwards
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 Air Prod & Chem, Donald J Bowe, Minfa Lin, Robert J Edwards filed Critical Air Prod & Chem
Priority to BRPI0618525-8A priority Critical patent/BRPI0618525A2/en
Priority to MX2008006300A priority patent/MX2008006300A/en
Priority to EP06850135A priority patent/EP1971693A2/en
Priority to CA002628610A priority patent/CA2628610A1/en
Publication of WO2007114853A2 publication Critical patent/WO2007114853A2/en
Publication of WO2007114853A3 publication Critical patent/WO2007114853A3/en

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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/663—Bell-type furnaces
    • C21D9/667—Multi-station furnaces
    • C21D9/67—Multi-station furnaces adapted for treating the charge in vacuum or special atmosphere
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/40—Arrangements of controlling or monitoring devices
    • 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
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/008—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases cleaning gases
    • 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
    • F27D19/00—Arrangements of controlling devices
    • 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)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Furnace Details (AREA)

Abstract

A method of removing oxygen molecules present in a furnace atmosphere having the step of: reacting the oxygen molecules from the furnace atmosphere on one or more catalytic reactors. A furnace having an atmosphere and at least one catalytic reactor for removing oxygen molecules present in said atmosphere.
PCT/US2006/060764 2005-11-16 2006-11-10 Deoxygenation of furnaces with hydrogen-containing atmospheres WO2007114853A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
BRPI0618525-8A BRPI0618525A2 (en) 2005-11-16 2006-11-10 method for removing oxygen molecules present in an oven atmosphere, and furnace
MX2008006300A MX2008006300A (en) 2005-11-16 2006-11-10 Deoxygenation of furnaces with hydrogen-containing atmospheres.
EP06850135A EP1971693A2 (en) 2005-11-16 2006-11-10 Deoxygenation of furnaces with hydrogen-containing atmospheres
CA002628610A CA2628610A1 (en) 2005-11-16 2006-11-10 Deoxygenation of furnaces with hydrogen-containing atmospheres

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US73727605P 2005-11-16 2005-11-16
US60/737,276 2005-11-16
US11/594,477 US20070107818A1 (en) 2005-11-16 2006-11-08 Deoxygenation of furnaces with hydrogen-containing atmoshperes

Publications (2)

Publication Number Publication Date
WO2007114853A2 WO2007114853A2 (en) 2007-10-11
WO2007114853A3 true WO2007114853A3 (en) 2008-03-13

Family

ID=38039516

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2006/060764 WO2007114853A2 (en) 2005-11-16 2006-11-10 Deoxygenation of furnaces with hydrogen-containing atmospheres

Country Status (5)

Country Link
US (1) US20070107818A1 (en)
EP (1) EP1971693A2 (en)
KR (1) KR20080084942A (en)
CA (1) CA2628610A1 (en)
WO (1) WO2007114853A2 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3535074A (en) * 1965-10-29 1970-10-20 Hitachi Ltd Method and apparatus for purifying crude inert gases
DE4212307A1 (en) * 1992-04-13 1993-10-14 Messer Griesheim Gmbh Process for the production of a protective or reaction gas for the heat treatment of metals
EP0603799A2 (en) * 1992-12-22 1994-06-29 Air Products And Chemicals, Inc. Heat treating atmospheres
DE4427507C1 (en) * 1994-08-03 1995-06-01 Linde Ag Case-hardening metal parts
EP0745446A1 (en) * 1995-06-01 1996-12-04 Air Products And Chemicals, Inc. Atmospheres for extending life of wire mesh belts used in sintering powder metal components
US5728354A (en) * 1995-03-16 1998-03-17 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and plant for generating nitrogen for heat treatment
US5779826A (en) * 1996-04-19 1998-07-14 The Boc Group, Inc. Method for forming heat treating atmospheres
US6024893A (en) * 1998-06-24 2000-02-15 Caterpillar Inc. Method for controlling a nitriding furnace

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4019885A (en) * 1976-02-13 1977-04-26 Libbey-Owens-Ford Company Removing metal deposits from the superstructure of a float glass chamber
US4319908A (en) * 1980-11-26 1982-03-16 Ppg Industries, Inc. Float glass forming chamber with a flat slab roof
DE4016183A1 (en) * 1990-05-19 1991-11-21 Linde Ag METHOD FOR IMPROVING THE PROVISION OF TREATMENT GAS IN HEAT TREATMENTS
US5259893A (en) * 1991-07-08 1993-11-09 Air Products And Chemicals, Inc. In-situ generation of heat treating atmospheres using a mixture of non-cryogenically produced nitrogen and a hydrocarbon gas
US5298090A (en) * 1992-12-22 1994-03-29 Air Products And Chemicals, Inc. Atmospheres for heat treating non-ferrous metals and alloys
US5322676A (en) * 1992-12-22 1994-06-21 Air Products And Chemicals, Inc. Process for producing furnace atmospheres using noncryogenically generated nitrogen
US6168774B1 (en) * 1997-08-07 2001-01-02 Praxair Technology, Inc. Compact deoxo system
US6047544A (en) * 1997-08-20 2000-04-11 Nissan Motor Co., Ltd. Engine exhaust gas purification catalyst and exhaust gas purifier
US7105459B2 (en) * 2002-03-04 2006-09-12 Rohm Co., Ltd. Method for forming thin film

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3535074A (en) * 1965-10-29 1970-10-20 Hitachi Ltd Method and apparatus for purifying crude inert gases
DE4212307A1 (en) * 1992-04-13 1993-10-14 Messer Griesheim Gmbh Process for the production of a protective or reaction gas for the heat treatment of metals
EP0603799A2 (en) * 1992-12-22 1994-06-29 Air Products And Chemicals, Inc. Heat treating atmospheres
DE4427507C1 (en) * 1994-08-03 1995-06-01 Linde Ag Case-hardening metal parts
US5728354A (en) * 1995-03-16 1998-03-17 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process and plant for generating nitrogen for heat treatment
EP0745446A1 (en) * 1995-06-01 1996-12-04 Air Products And Chemicals, Inc. Atmospheres for extending life of wire mesh belts used in sintering powder metal components
US5779826A (en) * 1996-04-19 1998-07-14 The Boc Group, Inc. Method for forming heat treating atmospheres
US6024893A (en) * 1998-06-24 2000-02-15 Caterpillar Inc. Method for controlling a nitriding furnace

Also Published As

Publication number Publication date
US20070107818A1 (en) 2007-05-17
EP1971693A2 (en) 2008-09-24
CA2628610A1 (en) 2007-10-11
WO2007114853A2 (en) 2007-10-11
KR20080084942A (en) 2008-09-22

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