US20100009301A1 - Staged Oxyfuel Combustion Method Using Pre-Heated Reagents - Google Patents

Staged Oxyfuel Combustion Method Using Pre-Heated Reagents Download PDF

Info

Publication number
US20100009301A1
US20100009301A1 US12/158,140 US15814006A US2010009301A1 US 20100009301 A1 US20100009301 A1 US 20100009301A1 US 15814006 A US15814006 A US 15814006A US 2010009301 A1 US2010009301 A1 US 2010009301A1
Authority
US
United States
Prior art keywords
fuel
jet
oxygenated gas
combustion
employed
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.)
Abandoned
Application number
US12/158,140
Inventor
Bertrand Leroux
Gabriel Constantin
Christian Imbernon
Remi Tsiava
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.)
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Original Assignee
LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
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 LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude filed Critical LAir Liquide SA pour lEtude et lExploitation des Procedes Georges Claude
Assigned to L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE reassignment L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES GEORGES CLAUDE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IMBERNON, CHRISTIAN, CONSTANTIN, GABRIEL, LEROUX, BERTRAND, TSIAVA, REMI
Publication of US20100009301A1 publication Critical patent/US20100009301A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/235—Heating the glass
    • C03B5/2353—Heating the glass by combustion with pure oxygen or oxygen-enriched air, e.g. using oxy-fuel burners or oxygen lances
    • 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
    • F23D14/46—Details, e.g. noise reduction means
    • F23D14/66—Preheating the combustion air or gas
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping

Definitions

  • the present invention relates to a process for burning a fuel using an oxygen-rich oxygenated gas in which the oxygen-rich oxygenated gas is preheated to a temperature of at least 300° C.
  • the two main preoccupations when designing burners intended for industrial furnaces are the efficiency of heat transfer to the charge and the reduction in polluting emissions, particularly nitrogen oxides.
  • One of the most promising methods for meeting these two preoccupations is staged oxycombustion using preheated reactants. This is because it is known that by staging the combustion it is possible to reduce the NOx emissions and that by preheating the reactants it is possible to make energy savings.
  • Oxycombustion is combustion employing an oxygenated gas having an oxygen concentration greater than air.
  • the process of staged combustion of fuels consists in dividing the amount of oxidant needed for complete combustion of the fuel into at least two oxidant streams introduced at different distances from the fuel stream.
  • a first oxidant stream is introduced at a very short distance from the fuel stream.
  • This first oxidant stream closest to the fuel stream is called the primary stream—it allows partial combustion of the fuel at a controlled temperature that limits the formation of NOx.
  • the other oxidant streams are introduced at a greater distance from the fuel than the primary oxidant stream. They are used to complete the combustion with the fuel that has not reacted with the primary oxidant. These streams are called secondary streams.
  • the object of the present invention is to propose design rules for a burner employing staged oxycombustion and preheated reactants so as to retain the advantages of staged oxycombustion without incurring the risks associated with the use of preheated reactants.
  • the invention relates to a process for burning a fuel using an oxygen-rich oxygenated gas in which the following are injected into a combustion chamber:
  • the process according to the invention employs combustion in which the oxidant is an oxygen-rich oxygenated gas, that is to say one having a higher oxygen concentration than air.
  • the oxidant is an oxygen-rich oxygenated gas, that is to say one having a higher oxygen concentration than air.
  • This may be oxidant-enriched air or pure oxygen.
  • the oxygen concentration of this oxygenated gas is at least 70% by volume.
  • the process according to the invention employs combustion in which at least the oxygenated gas is preheated to a temperature of at least 300° C.
  • This preheating may be carried out by any known method of the prior art. Preferably, this is preheating using a recuperator, for recovering the heat of the combustion flue gases.
  • the fuel may also be preheated, preferably to at least 300° C.
  • the process according to the invention employs staged combustion in which the oxygenated gas is divided into two streams, which are introduced into the combustion chamber at various distances from the fuel jet.
  • the primary jet is introduced in contact with the fuel jet and surrounds it.
  • the orifice of the injector introducing the primary jet into the combustion chamber has a diameter D.
  • the end of this primary jet injector emerges directly in the combustion chamber.
  • the end of the fuel injector does not emerge directly in the combustion chamber but is set back from the wall of the combustion chamber: the end of the fuel injector emerges in the middle of the primary jet injector at a point set back from the wall of the combustion chamber, situated at a distance r from said wall.
  • the diameter of the fuel injector is generally adjusted so as to produce a stable flame.
  • One of the essential features of the invention is that it is necessary to prevent the staged oxycombustion process being used with the fuel injector set back within the primary oxygenated gas injector with dimensions such that r/D is between 3 and 5.
  • the respective dimensions r and D are critical as they influence the volume of the cavity created by the fuel injector being set back within the primary oxygenated gas injector.
  • the l/d ratio must be at least 2 and preferably at least 10.
  • the orifices via which the reactants are injected have a circular cross section.
  • the invention also covers the cases in which the cross sections of these orifices are not of circular shape.
  • the diameters d and D mentioned above correspond to the hydraulic diameters of noncircular cross sections, the hydraulic diameter being defined as the ratio of 4 times the area of the cross section of the orifice divided by the perimeter of the cross section of the orifice.
  • FIG. 1 is a diagram for illustrating the various elements of the dimensions (r, d, D, l) for the process according to the invention.
  • the fuel l is introduced by means of the injector 7 placed in the injector 6 for the primary oxygenated gas 2 .
  • the end of the fuel injector is set back by a distance r from the wall 4 of the combustion chamber.
  • the end of the primary oxygenated gas injector 2 has a diameter D.
  • the secondary oxygenated gas 3 is introduced via the injector 5 , the end of which has a diameter d.
  • the distance between the edges of the ends of the oxygenated gas injectors 5 and 6 is l.

Abstract

The invention relates to a staged oxyfuel combustion method in which a combustion chamber is injected with a jet of fuel inside a jet of primary oxygen gas which is introduced through a hole having a diameter D and a secondary oxygen gas which is introduced through a hole having a diameter d, which is positioned at a distance l from the hole for the primary oxygen gas. According to the invention, the jet of fuel emerges at a distance r set back from the wall of the combustion chamber. The oxygen-rich oxygen gas is pre-heated to a temperature of at least 300° C. The r/D ratio is between 5 and 20 or between 0.75 and 3 and the l/d ratio is at least 2.

Description

  • The present invention relates to a process for burning a fuel using an oxygen-rich oxygenated gas in which the oxygen-rich oxygenated gas is preheated to a temperature of at least 300° C.
  • At the present time, the two main preoccupations when designing burners intended for industrial furnaces are the efficiency of heat transfer to the charge and the reduction in polluting emissions, particularly nitrogen oxides. One of the most promising methods for meeting these two preoccupations is staged oxycombustion using preheated reactants. This is because it is known that by staging the combustion it is possible to reduce the NOx emissions and that by preheating the reactants it is possible to make energy savings.
  • Oxycombustion is combustion employing an oxygenated gas having an oxygen concentration greater than air. The process of staged combustion of fuels consists in dividing the amount of oxidant needed for complete combustion of the fuel into at least two oxidant streams introduced at different distances from the fuel stream. Thus, a first oxidant stream is introduced at a very short distance from the fuel stream. This first oxidant stream closest to the fuel stream is called the primary stream—it allows partial combustion of the fuel at a controlled temperature that limits the formation of NOx. The other oxidant streams are introduced at a greater distance from the fuel than the primary oxidant stream. They are used to complete the combustion with the fuel that has not reacted with the primary oxidant. These streams are called secondary streams.
  • Preheating the reactants (oxygenated gas and fuel) has already been proposed in various schemes for recovering heat from the flue gases (U.S. Pat. No. 6,071,116). Also disclosed, in WO 00/79182, is a burner in which both the fuel and the oxidant are preheated. However, these documents do not mention the existence of problems associated with the use of hot reactants. However, the use of hot reactants may result in the following disadvantages:
      • increase in the flame velocity of the reactant mixture—the flame front then stabilizes close to the outlets of the various burner orifices, increasing the risk of overheating and premature destruction of the injectors;
      • increase in the flame temperature and thereby increasing the radiative transfer to the charge and to the surface of the burner; and
      • increase in the level of thermal NOx, as a result of the increase in flame temperature.
  • The object of the present invention is to propose design rules for a burner employing staged oxycombustion and preheated reactants so as to retain the advantages of staged oxycombustion without incurring the risks associated with the use of preheated reactants.
  • For this purpose, the invention relates to a process for burning a fuel using an oxygen-rich oxygenated gas in which the following are injected into a combustion chamber:
      • a jet of the fuel; and
      • at least two jets of the oxygenated gas:
        • the first jet of the oxygenated gas, called the primary jet, being introduced via an orifice having a diameter D and being injected around the jet of fuel and in an amount such that it causes a first incomplete combustion, the gases resulting from this first combustion still comprising at least some of the fuel and
        • the second jet of the oxygenated gas, being introduced via an orifice having a diameter d, placed at a distance l from the orifice for introducing the first, primary jet of oxygenated gas, so as to enter into combustion with that part of the fuel present in the gases resulting from the first combustion;
          and in which:
      • the jet of the fuel emerges within the primary jet of oxygenated gas at a point set back from the wall of the combustion chamber, said point being located at a distance r therefrom;
      • the oxygen-rich oxygenated gas is preheated to a temperature of at least 300° C.;
      • the r/D ratio is:
        • either between 5 and 20, preferably between 7 and 15;
        • or between 0.75 and 3; and
        • the l/d ratio is at least 2, preferably at least 10.
  • The process according to the invention employs combustion in which the oxidant is an oxygen-rich oxygenated gas, that is to say one having a higher oxygen concentration than air. This may be oxidant-enriched air or pure oxygen. Preferably, the oxygen concentration of this oxygenated gas is at least 70% by volume.
  • The process according to the invention employs combustion in which at least the oxygenated gas is preheated to a temperature of at least 300° C. This preheating may be carried out by any known method of the prior art. Preferably, this is preheating using a recuperator, for recovering the heat of the combustion flue gases. The fuel may also be preheated, preferably to at least 300° C.
  • The process according to the invention employs staged combustion in which the oxygenated gas is divided into two streams, which are introduced into the combustion chamber at various distances from the fuel jet. The primary jet is introduced in contact with the fuel jet and surrounds it. The orifice of the injector introducing the primary jet into the combustion chamber has a diameter D. The end of this primary jet injector emerges directly in the combustion chamber. However, the end of the fuel injector does not emerge directly in the combustion chamber but is set back from the wall of the combustion chamber: the end of the fuel injector emerges in the middle of the primary jet injector at a point set back from the wall of the combustion chamber, situated at a distance r from said wall. The diameter of the fuel injector is generally adjusted so as to produce a stable flame. In general, 2 to 20% of the total amount of oxygenated gas needed to burn the fuel is introduced by means of the primary jet. The complement of oxygenated gas is introduced by means of the secondary jet via an injector whose end opens directly in the combustion chamber and whose orifice has a diameter d. This injector of the secondary jet is placed at a distance l from the primary oxygenated gas orifice, the distance l being measured between the edges closest to the orifices of the primary oxygenated gas injector and of the secondary oxygenated gas injector.
  • One of the essential features of the invention is that it is necessary to prevent the staged oxycombustion process being used with the fuel injector set back within the primary oxygenated gas injector with dimensions such that r/D is between 3 and 5. The respective dimensions r and D are critical as they influence the volume of the cavity created by the fuel injector being set back within the primary oxygenated gas injector. By choosing the dimensions correctly, the invention makes it possible, on the one hand, to prevent the premixing flame developing in this cavity from damaging the ends of the fuel and primary oxygenated gas injectors and, on the other hand, to prevent the radiation emanating from the combustion chamber from damaging the end of the combustion injector.
  • Another essential feature of the invention is that the l/d ratio must be at least 2 and preferably at least 10.
  • Usually, the orifices via which the reactants are injected have a circular cross section. However, the invention also covers the cases in which the cross sections of these orifices are not of circular shape. In the latter cases, the diameters d and D mentioned above correspond to the hydraulic diameters of noncircular cross sections, the hydraulic diameter being defined as the ratio of 4 times the area of the cross section of the orifice divided by the perimeter of the cross section of the orifice.
  • FIG. 1 is a diagram for illustrating the various elements of the dimensions (r, d, D, l) for the process according to the invention. The fuel l is introduced by means of the injector 7 placed in the injector 6 for the primary oxygenated gas 2. The end of the fuel injector is set back by a distance r from the wall 4 of the combustion chamber. The end of the primary oxygenated gas injector 2 has a diameter D. The secondary oxygenated gas 3 is introduced via the injector 5, the end of which has a diameter d. The distance between the edges of the ends of the oxygenated gas injectors 5 and 6 is l.
  • By implementing the process as described above, it is possible to preheat the combustion reactants in a staged oxycombustion process without prematurely damaging the reactant injectors and without increasing the NOx emission.

Claims (17)

1-7. (canceled)
8. A process for burning a fuel using an oxygen-rich oxygenated gas in which the following are injected into a combustion chamber:
a jet of the fuel; and
at least two jets of the oxygenated gas:
the first jet of the oxygenated gas, called the primary jet, being introduced via an orifice having a diameter D and being injected around the jet of fuel and in an amount such that it causes a first incomplete combustion, the gases resulting from this first combustion still comprising at least some of the fuel and
the second jet of the oxygenated gas, being introduced via an orifice having a diameter d, placed at a distance l from the orifice for introducing the first, primary jet of oxygenated gas, so as to enter into combustion with that part of the fuel present in the gases resulting from the first combustion;
and in which:
the jet of the fuel emerges within the primary jet of oxygenated gas at a point set back from the wall of the combustion chamber, said point being located at a distance r therefrom;
the oxygen-rich oxygenated gas is preheated to a temperature of at least 300° C.,
and wherein:
the r/D ratio is:
either between 5 and 20;
or between 0.75 and 3; and
the l/d ratio is at least 2.
9. The process of claim 8, wherein the r/D ratio is between 7 and 15.
10. The process of claim 8, wherein the l/d ratio is at least 10.
11. The process of claim 8, wherein the oxygen-rich oxygenated gas has an oxygen concentration of at least 70% by volume.
12. The process of claim 8, wherein the fuel is preheated to at least 300° C.
13. The process of claim 8, wherein said process is employed in a glass melting furnace.
14. The process of claim 8, wherein said process is employed in a reheating furnace.
15. The process of claim 9, wherein the l/d ratio is at least 10.
16. The process of claim 15, wherein the oxygen-rich oxygenated gas has an oxygen concentration of at least 70% by volume.
17. The process of claim 16, wherein the fuel is preheated to at least 300° C.
18. The process of claim 17, wherein said process is employed in a glass melting furnace.
19. The process of claim 17, wherein said process is employed in a reheating furnace.
20. The process of claim 15, wherein said process is employed in a glass melting furnace.
21. The process of claim 15, wherein said process is employed in a reheating furnace.
22. The process of claim 16, wherein said process is employed in a glass melting furnace.
23. The process of claim 16, wherein said process is employed in a reheating furnace.
US12/158,140 2005-12-22 2006-12-18 Staged Oxyfuel Combustion Method Using Pre-Heated Reagents Abandoned US20100009301A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0554032A FR2895490B1 (en) 2005-12-22 2005-12-22 PROCESS FOR TESTED OXYCOMBUSTION USING PREHEATED REAGENTS
FR0554032 2005-12-22
PCT/FR2006/051371 WO2007074278A1 (en) 2005-12-22 2006-12-18 Staged oxyfuel combustion method using pre-heated reagents

Publications (1)

Publication Number Publication Date
US20100009301A1 true US20100009301A1 (en) 2010-01-14

Family

ID=36814239

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/158,140 Abandoned US20100009301A1 (en) 2005-12-22 2006-12-18 Staged Oxyfuel Combustion Method Using Pre-Heated Reagents

Country Status (14)

Country Link
US (1) US20100009301A1 (en)
EP (1) EP1966537B1 (en)
JP (1) JP5074417B2 (en)
CN (1) CN101341363A (en)
AU (1) AU2006329699B2 (en)
BR (1) BRPI0620398A2 (en)
CA (1) CA2633019C (en)
ES (1) ES2717351T3 (en)
FR (1) FR2895490B1 (en)
PL (1) PL1966537T3 (en)
RU (1) RU2387924C2 (en)
TR (1) TR201904082T4 (en)
WO (1) WO2007074278A1 (en)
ZA (1) ZA200804883B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2895490B1 (en) * 2005-12-22 2008-03-14 Air Liquide PROCESS FOR TESTED OXYCOMBUSTION USING PREHEATED REAGENTS
BRPI0913941A2 (en) * 2008-07-02 2015-10-20 Agc Glass Europe hot oxygen burner power supply
US8632621B2 (en) * 2010-07-12 2014-01-21 L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Method for melting a solid charge
CN104235849B (en) * 2014-10-09 2017-02-01 中冶南方(武汉)威仕工业炉有限公司 Grading oxygen-enriched flameless combustion gas burner and control method thereof
CN104266190B (en) * 2014-10-09 2016-06-22 中冶南方(武汉)威仕工业炉有限公司 oxygen enrichment flameless gas burner and control method thereof
CN115585458B (en) * 2022-11-29 2023-03-21 佛山市德力泰科技有限公司 High-speed preheating premixing combustion device

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6071116A (en) * 1997-04-15 2000-06-06 American Air Liquide, Inc. Heat recovery apparatus and methods of use
US6074197A (en) * 1996-11-25 2000-06-13 American Air Liquide, Inc. Combustion process and apparatus therefore containing separate injection of fuel and oxidant streams
US6193173B1 (en) * 1998-06-15 2001-02-27 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Burner with an improved injector and process for manufacturing this injector
US6233974B1 (en) * 1999-01-25 2001-05-22 Combustion Tec Oxygen-gaseous forehearth burner for air-fuel and oxy-fuel forehearth burner block geometries
US6394790B1 (en) * 1993-11-17 2002-05-28 Praxair Technology, Inc. Method for deeply staged combustion
US20070281254A1 (en) * 2003-12-16 2007-12-06 Bertrand Leroux Staged Combustion Method Using A Low-Oxygen Gas

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5611682A (en) * 1995-09-05 1997-03-18 Air Products And Chemicals, Inc. Low-NOx staged combustion device for controlled radiative heating in high temperature furnaces
US6123542A (en) * 1998-11-03 2000-09-26 American Air Liquide Self-cooled oxygen-fuel burner for use in high-temperature and high-particulate furnaces
FR2895490B1 (en) * 2005-12-22 2008-03-14 Air Liquide PROCESS FOR TESTED OXYCOMBUSTION USING PREHEATED REAGENTS

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6394790B1 (en) * 1993-11-17 2002-05-28 Praxair Technology, Inc. Method for deeply staged combustion
US6074197A (en) * 1996-11-25 2000-06-13 American Air Liquide, Inc. Combustion process and apparatus therefore containing separate injection of fuel and oxidant streams
US6331107B1 (en) * 1996-11-25 2001-12-18 American Air Liquide, Inc. Combustion process and apparatus therefore containing separate injection of fuel and oxidant streams
US6071116A (en) * 1997-04-15 2000-06-06 American Air Liquide, Inc. Heat recovery apparatus and methods of use
US6250916B1 (en) * 1997-04-15 2001-06-26 American Air Liquide, Inc. Heat recovery apparatus and methods of use
US6193173B1 (en) * 1998-06-15 2001-02-27 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Burner with an improved injector and process for manufacturing this injector
US6233974B1 (en) * 1999-01-25 2001-05-22 Combustion Tec Oxygen-gaseous forehearth burner for air-fuel and oxy-fuel forehearth burner block geometries
US20070281254A1 (en) * 2003-12-16 2007-12-06 Bertrand Leroux Staged Combustion Method Using A Low-Oxygen Gas

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Gerhart et al., Fundamentals of Fluid Mechanics, 1992, Addison-Wesley Publishing Company, Second Edition, pages 499-499. *

Also Published As

Publication number Publication date
CA2633019C (en) 2013-09-17
WO2007074278A1 (en) 2007-07-05
RU2008130119A (en) 2010-01-27
JP5074417B2 (en) 2012-11-14
ES2717351T3 (en) 2019-06-20
RU2387924C2 (en) 2010-04-27
BRPI0620398A2 (en) 2011-11-16
ZA200804883B (en) 2009-04-29
FR2895490A1 (en) 2007-06-29
PL1966537T3 (en) 2019-07-31
CN101341363A (en) 2009-01-07
CA2633019A1 (en) 2007-07-05
TR201904082T4 (en) 2019-04-22
AU2006329699B2 (en) 2011-04-21
AU2006329699A1 (en) 2007-07-05
EP1966537B1 (en) 2019-02-27
EP1966537A1 (en) 2008-09-10
FR2895490B1 (en) 2008-03-14
JP2009520944A (en) 2009-05-28

Similar Documents

Publication Publication Date Title
EP0939059B1 (en) Oxidizing oxygen-fuel burner firing for reducing NOx emissions from high temperature furnaces
KR100769098B1 (en) Oxidant injection method
EP0664871B1 (en) STAGED AIR, RECIRCULATING FLUE GAS LOW NOx BURNER
US5755818A (en) Staged combustion method
US20100009301A1 (en) Staged Oxyfuel Combustion Method Using Pre-Heated Reagents
CA2221331A1 (en) Combustion process and apparatus therefore containing separate injection of fuel and oxidant streams
WO1997032162A1 (en) HIGH-HEAT TRANSFER, LOW-NOx COMBUSTION SYSTEM
EP0643020B1 (en) Flue system combustion
US8714969B2 (en) Staged combustion method with optimized injection of primary oxidant
EP2500645B1 (en) Oxygen-fired low-NOx gas burner and combustion method
US6398546B1 (en) Combustion in a porous wall furnace
CA2178858C (en) Staged combustion with reduced generation of both nitrogen oxides and carbon monoxide
EP3441670A1 (en) Method and burner assembly for combusting a fuel gas with an oxidant
Syska et al. Staged air, recirculating flue gas low NO x burner
CA2591692A1 (en) Oxidizing oxygen-fuel burner firing for reducing nox emissions from high temperature furnaces
TH50845B (en)
TH54191A (en)

Legal Events

Date Code Title Description
AS Assignment

Owner name: L'AIR LIQUIDE, SOCIETE ANONYME POUR L'ETUDE ET L'E

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LEROUX, BERTRAND;CONSTANTIN, GABRIEL;IMBERNON, CHRISTIAN;AND OTHERS;REEL/FRAME:021613/0523;SIGNING DATES FROM 20080611 TO 20080716

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION