WO1989002051A1 - Procede de production d'une flamme oxydante, bruleur et utilisation d'un bruleur - Google Patents

Procede de production d'une flamme oxydante, bruleur et utilisation d'un bruleur Download PDF

Info

Publication number
WO1989002051A1
WO1989002051A1 PCT/SE1987/000392 SE8700392W WO8902051A1 WO 1989002051 A1 WO1989002051 A1 WO 1989002051A1 SE 8700392 W SE8700392 W SE 8700392W WO 8902051 A1 WO8902051 A1 WO 8902051A1
Authority
WO
WIPO (PCT)
Prior art keywords
oxygen
nozzle
burner
central
fuel
Prior art date
Application number
PCT/SE1987/000392
Other languages
English (en)
Inventor
Lars Saltin
Martin Petersson
Original Assignee
Aga Aktiebolag
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 Aga Aktiebolag filed Critical Aga Aktiebolag
Priority to PCT/SE1987/000392 priority Critical patent/WO1989002051A1/fr
Priority to BR8707994A priority patent/BR8707994A/pt
Priority to EP87906117A priority patent/EP0393020A1/fr
Publication of WO1989002051A1 publication Critical patent/WO1989002051A1/fr
Priority to DK053990A priority patent/DK53990A/da
Priority to NO90900985A priority patent/NO166671C/no
Priority to FI901050A priority patent/FI901050A0/fi

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B7/00—Blast furnaces
    • C21B7/16—Tuyéres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/20—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone
    • F23D14/22—Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23D—BURNERS
    • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
    • F23D14/32—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Definitions

  • the present invention relates to a method of generating a powerfully oxidizing flame and a burner therefore, the burner including a central body with a central oxygen nozzle and at least one fuel nozzle, a casing which surrounds the central body and which ⁇ ay form the inner wall ' of cooling jacket surrounding the burner, at least one peripheral oxygen nozzle between the central body and the casing and an oxygen chamber outside the central body.
  • the present invention also relates to the use of the burner as an oxygen lance.
  • burners which are supplied with a gaseous, liquid or solid fluidizable fuel and oxygenous gas. Particularly high temperatures are obtained when the oxygenous gas consists of pure oxygen. Burners which are driven with a fuel and an oxygenous gas with a high content of oxygen are normally designated oxy-fuel burners.
  • Oxy-fuel burners are employed in industrial processes in which high temperatures occur, for example in the melting of steel, in the manufacture of aluminium and lead and in cement manufacture. These burners are often employed in electric arc furnaces for, for example, steel melting as a complement to the electric energy so as to increase the output capacity of the furnace. In such instances, they are installed in the roof or side wall of the furnace. In the charging of an arc furnace in steel manufacture, the amount of scrap is often so great that it covers the oxy-fuel burners, in which event problems arise in respect of the space for tb flame of the burner for the combustion process, the efficiency of the burner being thereby reduced. Hence, there is an urgent need for rapidly creating a space in the scrap to allow for the combustion. OBJECTS OF THE PRESENT INVENTION
  • One object of• the present invention is to realize a method of creating, with an oxy-fuel burner, a powerfully oxidizing flame which rapidly creates the necessary space for the flame of the burner.
  • a further object of the present invention is to realize a burner by means which it is possible to create a powerfully oxidizing flame which, in a brief space of time, creates the space necessary for the action an effect of the burner.
  • a burner which includes a central oxygen nozzle, at least one fuel nozzle disposed radially outside the central oxygen nozzle, and at least peripheral oxygen nozzle in greater spaced apart relationship from the central oxygen nozzle than the fuel nozzle.
  • the primary characterizing feature of this burner is that the central oxygen nozzle is designed as a laval nozzle.
  • a further characterizing feature is that the central oxygen nozzle is supplied at a different oxygen pressure than the peripheral oxygen nozzle, separate conduits being connected to the oxygen nozzles.
  • the method according to the present invention is characterized in that the ' ratio between the amount of fuel through the fuel nozzle and the oxygen amount through the peripheral oxygen nozzle are regulated so as to obtain a substantially stoicio etric combustion; and that, for generating the powerfully oxidizing flame, oxygen is caused to flow at great speed through the central oxygen nozzle, the speed of flow of the oxygen through the .central oxygen nozzle being preferably higher than the speed of sound for oxygen.
  • Fig. 1 illustrates the oxy-fuel burner according to the present invention in section through its longitudinal axis
  • Fig. 2 illustrates another embodiment of the burner of Fig. 1;
  • Fig. 3 illustrates yet a further embodiment of the burner according to the present invention in section through the longitudinal axis of the burner.
  • the burner of Fig. 1 displays a casing 1 which defines a cylindrical oxygen chamber 21.
  • the rear region of the casing 1 is provided with a flange 19, in which a wall 15 defining the oxygen chamber 21 is sealingly mounted by, for example, a number of bolts (not shown).
  • An inlet 17 for oxygen is connected to the oxygen chamber 21.
  • the casing 1 serves as the inner wall of a cooling jacket 3 surrounding the burner.
  • the cooling jacket 3 is provided with an inlet 5 and an outlet 7 for coolant, which normally is water.
  • the burner further includes a centre body 9 in its forward region, the central body being held in spaced apart relationship from the casing 1 by spacers 11.
  • the forward end of the central body is retracted in relation to the forward end of the casing 1, but may, naturally, also be flush with or ahead of the forward end of the casing.
  • the space between the central body 9 and the casing 1 forms an annular gap which constitutes a first oxygen nozzle 13 through which oxygen may depart from the oxygen chamber 21.
  • a second nozzle 23 for oxygen is connected to a conduit 29 which passes through the rear wall 15 of the oxygen chamber 21.
  • the second oxygen nozzle 23 is designed as a laval nozzle.
  • the inlet 19 and the conduit 29 are each connected to their oxygen source, it being possible to obtain, in the conduit 29, a greater pressure than in the oxygen chamber 21.
  • a compartment 27 is disposed at the rear end of the centre body 9, the compartment surrounding the conduit 29 and being defined at its ' forward end by the centre body 9.
  • the nozzle 25, 26 connects the chamber 27 with the outside of the burner.
  • a conduit 31 is connected to the compartment 27, this conduit, like the. conduit 29, passing through the oxygen chamber 21 and departing from the burner through the rear defining wall 15.
  • the conduit 31 is connected to a source of fuel, preferably gaseous fuel.
  • the chamber 27 serves as a distribution chamber for the fuel to the fuel nozzle 25, 26.
  • the burner of Fig. 2 is similar to that of Fig. 1. Those parts and details of the burner according to Fig. 2 which are identical with corresponding parts and details in Fig. 1 have been given the same reference numeral.
  • the burner of Fig. 2 displays a casing 2 which defines a cylindrical oxygen chamber 22.
  • the rear region of the casing 2 is provided with a flange 19 in which a wall 15 defining the oxygen chamber 22 is ' -seal ingly mounted.
  • a seal may be disposed between the flange 19 and the wall 15.
  • An inlet 17 for oxygen is connected to the oxygen chamber 22.
  • the casing 2 lacks the cooling jacket.
  • the casing 2 may, for instance, consist of a ceramic material or an ultra-high-temperature alloy, such as a cemented carbide.
  • the forward bounding definition of the oxygen chamber is a central body 10 disposed in the forward end of the burner.
  • the inlet 17 and the conduit 29 are each connected to their source of oxygen, it being possible in the conduit 29 to achieve a greater pressure than- in the oxygen chamber.
  • the central body 10 sealingly abuts against the inside of the casing 2, and its forward edge is here flush with the forward edge of the casing 2.
  • an oxygen nozzle 23 which is designed as a laval nozzle and corresponds to the second nozzle of the burner according to Fig. 1.
  • the second oxygen nozzle 23 is, at its end facing away from the forward face of the burner, connected to the conduit 29 for oxygen.
  • a fuel distribution chamber 27 whose forward bounding definition is the central body 10.
  • the nozzle 25, 26 connects the fuel distribution chamber 27 with the outside of the burner.
  • the nozzle 25, 26 is a fuel nozzle.
  • a conduit 31 is connected to the chamber 27, this conduit, like the conduit 29 for oxygen, passing through the oxygen chamber 22 and departing therefrom through the rear defining wall 15 of the burner.
  • the conduit 31 is connected to a fuel source, preferably gaseous fuel.
  • the side wall of the fuel chamber is located in spaced apart relationship from the casing 2, such that the forward bounding definition of the oxygen chamber 22 consists of the central body 10.
  • the nozzle 14 may also consist of an annular nozzle 14 corresponding to the first oxygen nozzle 13 in Fig. 1.
  • the first oxygen nozzle 14 and the fuel nozzle 25, 26 consist of a number of nozzles 14 and 26, respectively, arranged concentrically in a ring, these may be cylindrical and straight or cylindrical and helical, in which latter case the helical portion is at most 90 degrees.
  • These nozzles may also be trunco-conical , the base of the truncated cone then facing forwards.
  • the first oxygen nozzles may also be designed as laval nozzles.
  • the burner according to Fig. 3 is very similar to the burner of Fig. 1.
  • the gap which constitutes the peripheral oxygen nozzle 13 in Fig. 1 has, in this figure, been replaced by a make-up piece 16 between the central body 9 and the casing 1.
  • the make-up piece 16 includes a number of nozzles 20 arranged in a ring, these likening the nozzles 14 of Fig. 2, but may also consist of an annular nozzle.
  • the forward edge of the make-up piece is displaced in relation to both the forward edge of the casing 1 and the forward edge of the central body 9. In the illustrated embodiment, the make-up piece 16 is shorter than the central body 9.
  • peripheral oxygen nozzles like the fuel nozzles, may be odd or even in number.
  • the first and second oxygen nozzle 13, 14; 20, 23, respectively
  • oxygen nozzles are designated oxygen nozzles. It is, naturally, possible to use gas mixtures with oxygen instead of pure oxygen. However, in such instance it is appropriate that the oxygen content be at least 50 per cent by volume.
  • coolant is supplied to the inlet 5 of the cooling jacket 3, this coolant departing from the jacket 3 through the outlet 7.
  • Oxygen is supplied through the inlet 17 to the oxygen chamber 21, this oxygen departing therefrom through the nozzle 13, and fuel, for example natural gas, is supplied through the conduit 31 where it is dissipated in the chamber 27 and departs therefrom through the nozzle 25, 26.
  • fuel for example natural gas
  • oxygen is supplied to the oxygen chamber 21 and fuel through the conduit 31 in such volumes and at such proportions that there will be obtained stoiciometric combustion with a suitable flame size.
  • the burner then functions as a conventional oxy-fuel burner.
  • the burner When the intention is to employ the burner to generate a powerfully oxidizing flame, the burner is ignited on the supply of oxygen to the nozzle 13 and fuel to the nozzle 25, 26. Thereafter, oxygen is supplied at high pressure to the conduit 29, this oxygen departing from the burner through the second oxygen nozzle 23 which is designed as a laval nozzle.
  • the second oxygen nozzle 23 which is designed as a laval nozzle.
  • the thus obtained powerfully oxidizing flame may be used for rapidly creating a.space about the burner in those cases when a charge supplied to a furnace covers the burner and prevents, or at least seriously obstructs the normal function of a conventional oxy-fuel burner.
  • the oxygen supply to the central nozzle 23 for oxygen is cut off.
  • the burner thereafter functions as a conventional oxy-fuel burner.
  • the ratio between the volume of oxygen supplied to the burner through the central nozzle 23 and the peripheral nozzle 13, 14 and 20 may vary within broad limits. In the generation of a powerfully oxidizing flame, the ratio is normally greater than 0.5, preferably greater than 1.
  • the burner will also be employed as a conventional oxygen lance. In such instance, only oxygen is supplied to the burner, preferably solely through the second oxygen nozzle 23 which is designed as- a laval nozzle, or also through the first oxygen nozzle 13 which is also preferably designed as a laval nozzle.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pre-Mixing And Non-Premixing Gas Burner (AREA)
  • Gas Burners (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)

Abstract

Procédé de production d'une flamme fortement oxydante et brûleur correspondant, celui-ci comportant un corps central (9) pourvu d'une buse centrale à oxygène (23) et d'au moins une buse à combustible (25, 26), un boîtier (1) entourant le corps central (9), au moins une buse périphérique à oxygène (13) située excentriquement par rapport à la buse à combustible (25, 26) et une chambre à oxygène (21) située hors du corps central (9), toutes les buses (23, 25 26, 13) étant au moins pratiquement parallèles. La buse centrale à oxygène (23) et la buse périphérique à oxygène (13) sont raccordées à différentes sources d'oxygène, ce qui permet à la source raccordée à la buse centrale à oxygène (23) de fournir une pression plus élevée que la pression de l'autre source. De préférence, la buse centrale à oxygène (23) a la forme d'une tuyère de Laval. Quand on alimente le brûleur uniquement avec de l'oxygène, il peut être utilisé comme lance à oxygène. Dans ce cas, l'oxygène alimente, de préférence, uniquement la buse centrale à oxygène (23).
PCT/SE1987/000392 1987-09-02 1987-09-02 Procede de production d'une flamme oxydante, bruleur et utilisation d'un bruleur WO1989002051A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PCT/SE1987/000392 WO1989002051A1 (fr) 1987-09-02 1987-09-02 Procede de production d'une flamme oxydante, bruleur et utilisation d'un bruleur
BR8707994A BR8707994A (pt) 1987-09-02 1987-09-02 Metodo para gerar uma chama ocidante,queimador e uso para um queimador
EP87906117A EP0393020A1 (fr) 1987-09-02 1987-09-02 Procede de production d'une flamme oxydante, bruleur et utilisation d'un bruleur
DK053990A DK53990A (da) 1987-09-02 1990-03-01 Fremgangsmaade til at frembringe en oxiderende flamme, en braender og anvendelsen af en braender
NO90900985A NO166671C (no) 1987-09-02 1990-03-01 Oksiderende flamme og brenner.
FI901050A FI901050A0 (fi) 1987-09-02 1990-03-01 Foerfarande foer generering av en oxiderande flamma, en braennare samt en anvaendning foer en braennare.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SE1987/000392 WO1989002051A1 (fr) 1987-09-02 1987-09-02 Procede de production d'une flamme oxydante, bruleur et utilisation d'un bruleur

Publications (1)

Publication Number Publication Date
WO1989002051A1 true WO1989002051A1 (fr) 1989-03-09

Family

ID=20367366

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1987/000392 WO1989002051A1 (fr) 1987-09-02 1987-09-02 Procede de production d'une flamme oxydante, bruleur et utilisation d'un bruleur

Country Status (6)

Country Link
EP (1) EP0393020A1 (fr)
BR (1) BR8707994A (fr)
DK (1) DK53990A (fr)
FI (1) FI901050A0 (fr)
NO (1) NO166671C (fr)
WO (1) WO1989002051A1 (fr)

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0390766A1 (fr) * 1989-03-28 1990-10-03 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Procédé pour injecter un combustible auxiliaire dans un haut fourneau
EP0597270A2 (fr) * 1992-11-11 1994-05-18 KCT TECHNOLOGIE GmbH Procédé d'opération d'une tuyère multimédia et un système de tuyère
EP0686807A1 (fr) * 1994-06-10 1995-12-13 DANIELI & C. OFFICINE MECCANICHE S.p.A. Brûleur rotatif
WO1996000798A1 (fr) * 1994-06-29 1996-01-11 Ingitec Gbr Systeme de tuyeres destine a une installation de fusion de materiaux metalliques ferreux dans un cubilot chauffe au coke
EP0705656A3 (fr) * 1991-12-09 1996-05-15 Esab Welding Products Inc
WO1997009566A1 (fr) * 1995-09-07 1997-03-13 Voest-Alpine Industrieanlagenbau Gmbh Procede de combustion d'un combustible
EP0777751A1 (fr) * 1994-08-29 1997-06-11 American Combustion, Inc. Procede et dispositif de production electrique d'acier
EP0823592A2 (fr) 1996-08-05 1998-02-11 The BOC Group plc Brûleur à oxygène-combustible
EP0850883A2 (fr) * 1996-12-26 1998-07-01 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procédé de fabrication de verre technique et brûleur pour la mise en oeuvre d'un tel procédé
US5843368A (en) * 1994-08-29 1998-12-01 American Combustion, Inc. Apparatus for electric steelmaking
EP0918093A1 (fr) * 1997-11-20 1999-05-26 Praxair Technology, Inc. Lance d'injection à jet cohérente
US5927960A (en) * 1995-09-21 1999-07-27 The Boc Group Plc Burner
EP0965649A1 (fr) * 1998-06-17 1999-12-22 Praxair Technology, Inc. Jet de gaz supersonique pour le transfert de gaz dans un liquide
US6139310A (en) * 1999-11-16 2000-10-31 Praxair Technology, Inc. System for producing a single coherent jet
US6171544B1 (en) 1999-04-02 2001-01-09 Praxair Technology, Inc. Multiple coherent jet lance
EP1132684A3 (fr) * 2000-03-10 2002-05-02 L'air Liquide, S.A. à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procédés Georges Claude Procédé et appareil pour l'injection de gaz dans une enceinte avec entraínement variable de gaz non injecté
KR20040032298A (ko) * 2002-10-09 2004-04-17 주식회사 태성산전 공업 버너용 토치
WO2006087189A1 (fr) * 2005-02-18 2006-08-24 Techint Compagnia Tecnica Internazionale S.P.A. Injecteur multifonction et procede de combustion s’y rapportant pour un traitement metallurgique dans un four a arc electrique
US7775791B2 (en) 2008-02-25 2010-08-17 General Electric Company Method and apparatus for staged combustion of air and fuel
EP2626628A1 (fr) * 2012-02-09 2013-08-14 Linde Aktiengesellschaft Installation de chauffe d'un four rotatif
CN104296137A (zh) * 2013-07-19 2015-01-21 湖南水口山有色金属集团有限公司 一种燃烧器
US10845052B1 (en) 2019-12-20 2020-11-24 Jupiter Oxygen Corporation Combustion system comprising an annular shroud burner
WO2022184692A1 (fr) * 2021-03-02 2022-09-09 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Brûleur oxy-combustible, système de commande d'allumage et de flamme et procédé de commande d'allumage et de flamme

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US2195384A (en) * 1937-04-08 1940-03-26 Linde Air Prod Co Metal cutting process
US3202201A (en) * 1962-01-15 1965-08-24 Chemetron Corp Gas burner for melting and refining scrap metal
GB1138311A (en) * 1965-02-17 1969-01-01 Osterreichisch Alpine Montange A method of and burner for heating an open hearth furnace
GB1234052A (fr) * 1968-08-15 1971-06-03
DE2056736A1 (de) * 1970-11-18 1972-05-25 Philips Patentverwaltung Gmbh, 2000 Hamburg Erdgasnngbrenner
US4173499A (en) * 1976-07-27 1979-11-06 Linde Aktiengesellschaft Method of operating a cutting burner
US4421273A (en) * 1977-03-18 1983-12-20 Aga Aktiebolag Method and apparatus for supplying oxygen gas for fuel combustion
EP0097883A1 (fr) * 1982-06-26 1984-01-11 AUTE Gesellschaft für autogene Technik mbH Tuyère courte en une seule pièce pour un brûleur pour le coupage ou le rabotage thermo-chimique
EP0103651A1 (fr) * 1982-09-17 1984-03-28 AUTE Gesellschaft für autogene Technik mbH Buse courte pour oxycoupage au chalumeau ou décapage à la flamme

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2195384A (en) * 1937-04-08 1940-03-26 Linde Air Prod Co Metal cutting process
US3202201A (en) * 1962-01-15 1965-08-24 Chemetron Corp Gas burner for melting and refining scrap metal
GB1138311A (en) * 1965-02-17 1969-01-01 Osterreichisch Alpine Montange A method of and burner for heating an open hearth furnace
GB1234052A (fr) * 1968-08-15 1971-06-03
DE2056736A1 (de) * 1970-11-18 1972-05-25 Philips Patentverwaltung Gmbh, 2000 Hamburg Erdgasnngbrenner
US4173499A (en) * 1976-07-27 1979-11-06 Linde Aktiengesellschaft Method of operating a cutting burner
US4421273A (en) * 1977-03-18 1983-12-20 Aga Aktiebolag Method and apparatus for supplying oxygen gas for fuel combustion
EP0097883A1 (fr) * 1982-06-26 1984-01-11 AUTE Gesellschaft für autogene Technik mbH Tuyère courte en une seule pièce pour un brûleur pour le coupage ou le rabotage thermo-chimique
EP0103651A1 (fr) * 1982-09-17 1984-03-28 AUTE Gesellschaft für autogene Technik mbH Buse courte pour oxycoupage au chalumeau ou décapage à la flamme

Cited By (40)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0390766A1 (fr) * 1989-03-28 1990-10-03 CENTRE DE RECHERCHES METALLURGIQUES CENTRUM VOOR RESEARCH IN DE METALLURGIE Association sans but lucratif Procédé pour injecter un combustible auxiliaire dans un haut fourneau
EP0705656A3 (fr) * 1991-12-09 1996-05-15 Esab Welding Products Inc
EP0597270A2 (fr) * 1992-11-11 1994-05-18 KCT TECHNOLOGIE GmbH Procédé d'opération d'une tuyère multimédia et un système de tuyère
EP0597270A3 (en) * 1992-11-11 1994-09-07 Kct Tech Gmbh A method for operating a multimedia tuyere and the tuyere system.
US5630713A (en) * 1994-06-10 1997-05-20 Danieli & C. Officine Meccaniche Spa Rotary burner
EP0686807A1 (fr) * 1994-06-10 1995-12-13 DANIELI & C. OFFICINE MECCANICHE S.p.A. Brûleur rotatif
WO1996000798A1 (fr) * 1994-06-29 1996-01-11 Ingitec Gbr Systeme de tuyeres destine a une installation de fusion de materiaux metalliques ferreux dans un cubilot chauffe au coke
EP0777751A4 (fr) * 1994-08-29 1998-04-22 American Combustion Inc Procede et dispositif de production electrique d'acier
US5904895A (en) * 1994-08-29 1999-05-18 American Combustion, Inc. Apparatus for electric steelmaking
EP1123982A1 (fr) * 1994-08-29 2001-08-16 American Combustion, Inc. Procédé et dispositif de production électrique d'acier
US5954855A (en) * 1994-08-29 1999-09-21 American Combustion, Inc. Method for electric steelmaking
EP0777751A1 (fr) * 1994-08-29 1997-06-11 American Combustion, Inc. Procede et dispositif de production electrique d'acier
US5843368A (en) * 1994-08-29 1998-12-01 American Combustion, Inc. Apparatus for electric steelmaking
US6142765A (en) * 1995-09-07 2000-11-07 Vost-Alpine Industrieanlagenbau Gmbh Process for burning fuel
WO1997009566A1 (fr) * 1995-09-07 1997-03-13 Voest-Alpine Industrieanlagenbau Gmbh Procede de combustion d'un combustible
US5927960A (en) * 1995-09-21 1999-07-27 The Boc Group Plc Burner
EP0823592A2 (fr) 1996-08-05 1998-02-11 The BOC Group plc Brûleur à oxygène-combustible
EP0850883A3 (fr) * 1996-12-26 1998-07-08 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procédé de fabrication de verre technique et brûleur pour la mise en oeuvre d'un tel procédé
FR2757844A1 (fr) * 1996-12-26 1998-07-03 Air Liquide Procede de fabrication de verre technique et bruleur pour la mise en oeuvre d'un tel procede
EP0850883A2 (fr) * 1996-12-26 1998-07-01 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Procédé de fabrication de verre technique et brûleur pour la mise en oeuvre d'un tel procédé
US6332340B1 (en) 1996-12-26 2001-12-25 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Process for manufacturing technical glass and burner for implementing such a process
EP0918093A1 (fr) * 1997-11-20 1999-05-26 Praxair Technology, Inc. Lance d'injection à jet cohérente
KR100486184B1 (ko) * 1998-06-17 2005-05-03 프랙스에어 테크놀로지, 인코포레이티드 초음속의 응집성 가스젯 제공 방법 및 장치
US6176894B1 (en) 1998-06-17 2001-01-23 Praxair Technology, Inc. Supersonic coherent gas jet for providing gas into a liquid
AU742691B2 (en) * 1998-06-17 2002-01-10 Praxair Technology, Inc. Supersonic coherent gas jet for providing gas into a liquid
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NO900985D0 (no) 1990-03-01
DK53990D0 (da) 1990-03-01
DK53990A (da) 1990-03-01
NO166671C (no) 1991-08-21
EP0393020A1 (fr) 1990-10-24
NO166671B (no) 1991-05-13
NO900985L (no) 1990-03-01
FI901050A0 (fi) 1990-03-01
BR8707994A (pt) 1990-05-22

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