US20070269755A2 - Systems, apparatus and method for flameless combustion absent catalyst or high temperature oxidants - Google Patents

Systems, apparatus and method for flameless combustion absent catalyst or high temperature oxidants Download PDF

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Publication number
US20070269755A2
US20070269755A2 US11/325,979 US32597906A US2007269755A2 US 20070269755 A2 US20070269755 A2 US 20070269755A2 US 32597906 A US32597906 A US 32597906A US 2007269755 A2 US2007269755 A2 US 2007269755A2
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United States
Prior art keywords
combustion chamber
fuel gas
air
combustion
injection nozzle
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Abandoned
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US11/325,979
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English (en)
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US20070154855A1 (en
Inventor
William Gibson
Robert Gibson
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Petro-Chem Development Co Inc
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Petro-Chem Development Co Inc
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Priority to US11/325,979 priority Critical patent/US20070269755A2/en
Assigned to GREAT SOUTHERN FLAMELESS, LLC reassignment GREAT SOUTHERN FLAMELESS, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GIBSON, ROBERT L., GIBSON, WILLIAM C.
Assigned to PETRO-CHEM DEVELOPMENT CO., INC. reassignment PETRO-CHEM DEVELOPMENT CO., INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GREAT SOUTHERN FLAMELESS, L.L.C.
Priority to JP2008549534A priority patent/JP5074421B2/ja
Priority to BRPI0706216A priority patent/BRPI0706216B1/pt
Priority to EP07717783.0A priority patent/EP1971803A4/en
Priority to CN2007800064567A priority patent/CN101389905B/zh
Priority to PCT/US2007/000041 priority patent/WO2007081687A2/en
Priority to CA002633753A priority patent/CA2633753A1/en
Priority to TW096100315A priority patent/TWI416050B/zh
Publication of US20070154855A1 publication Critical patent/US20070154855A1/en
Publication of US20070269755A2 publication Critical patent/US20070269755A2/en
Priority to KR1020087018977A priority patent/KR101477519B1/ko
Abandoned legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23LSUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L15/00Heating of air supplied for combustion
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/006Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber the recirculation taking place in the combustion chamber
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C99/00Subject-matter not provided for in other groups of this subclass
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23CMETHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/99001Cold flame combustion or flameless oxidation processes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/34Indirect 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 generally to a spontaneous combustion system, apparatus and method. More specifically, the present invention discloses a system, apparatus and method whereby flameless combustion may be precipitated and maintained in a combustion chamber of any shape absent catalyst or high temperature oxidants.
  • the present invention can be used for a variety of applications including, but not limited to, heating a building, residential boilers, commercial boilers, industrial boilers, supplying heat for fractionation or catalytic reaction, and anything that requires a heating process.
  • a thermal combustion system of the contemporary art typically operates by contacting fuel and air, creating a boundary layer, with an ignition source, which ignites this mixture such that it continues to burn.
  • the air is rich in oxygen and nitrogen molecules, while the fuel is rich in hydrogen and carbon molecules.
  • these molecules are all moving around randomly. Once the temperature in the boundary layer reaches the auto-ignition temperature or with the assistance of an ignition source, combustion occurs.
  • the hydrogen molecules combine with the oxygen molecules to form water and release energy.
  • the carbon molecules combine with the oxygen molecules to form carbon dioxide and release energy.
  • the prior art has a limited use in that it requires the chamber to be essentially oval since the invention depends on controlling the mixing of the air stream and fuel stream via centrifugal principles and also that the flue gas must be recirculated at high recirculation rates only possible in an oval enclosure.
  • the prior art teaches that the air, fuel gas and flue gas are located along a very narrow boundary along the chamber's wall, wherein the flue gas is located on top of the fuel gas which is located on top of the air stream.
  • the flue gas mixes with the fuel gas, forming inert fuel gas, which then mixes with the air according to centrifugal principles. Since each of the gases are located on top of each other, hot spots occur within the essentially oval combustion chamber close to the combustion chamber's curvature areas. These hot spots may elevate the temperature in that area to above 2200° F., thus increasing the amount of NO x emissions that are formed.
  • combustion chamber that can precipitate and maintain flameless combustion along any surface-shape, whether the surface is convex, concave, straight, or a combination of any of these surface shapes. Additionally, the industry has also sought flexibility as to the source of the flue gas, whether it be external or internal. Finally, the industry has also wanted a flameless combustion chamber capable of performing the combustion with the least amount of NO x emissions which can be achieved with better, more uniformed mixing of the gases.
  • This uniform mixing can be achieved with the present invention by first inerting both the air and the fuel gas and then allowing the two gases, located side by side of each other, to diffuse into each other, thus eliminating the creation of hot spots and reducing NO x formations within the combustion chamber.
  • the present invention is capable of using a flameless combustion chamber having an internal surface shape that is convex, concave, straight or a combination of any of these surface shapes because it uses the principles taught by the Coanda Effect.
  • the principles taught by the Coanda Effect also allow the present invention to utilize a more efficient method of mixing the gases such that there are no hot spot formations along the combustion chamber's inner wall surface.
  • the Coanda Effect was discovered in 1930 by the Romanian aerodynamicist Henri-Marie Coanda.
  • the Coanda Effect or the wall attachment effect, is the tendency of a moving fluid, either liquid or gas, to attach itself to a surface and flow along it.
  • skin friction a certain amount of friction
  • This resistance to the fluid flow pulls the fluid towards the surface, causing it to stick to the surface.
  • a fluid emerging from a nozzle tends to follow a nearby curved surface, even to the point of bending around corners, if the curvature of the surface or the angle the surface makes with the stream is not too sharp.
  • the Coanda Effect in action is shown when one makes contact with the back of a spoon to a water stream running freely out of a faucet.
  • the water stream will deflect from the vertical in order to run over the spoon's back.
  • the Coanda Effect allows the gases, inerted fuel and inerted air, to attach to the combustion chamber's inner surface thereby allowing a variety of different surface shapes.
  • the Coanda Effect allows the gases that are attached to the combustion chamber's inner surface wall to mix and diffuse more uniformly than in the prior art because the gases will be mixing side by side to each other, rather than from on top of each other. Hence, when mixing side by side, there will be no centrifugal forces acting upon the mixing to cause hot spot formations along the combustion chamber's inner surface wall.
  • heater is defined as “a refractory lined enclosure containing a heat transfer cooling coil” and the term “burner” is defined as “a metering device for fuel gas, air and flue gas.
  • Another object of the instant invention is to disclose and claim an apparatus which embodies a combustion chamber that is capable of having an inner surface wall shape that is convex, concave, straight or any combination thereof and still achieve flameless combustion with the means of controlling the rate of diffusion between the inert and the inert fuel gas.
  • a further object of the instant invention is to eliminate cold and hot spots associated with combustion chambers of the prior art.
  • Another object of the instant invention is to introduce a system, apparatus and method whereby very uniform and cooler combustion may be precipitated, thus creating low NO x emissions measured about 3 to 5 ppm.
  • Yet another object of the instant invention is to provide for complete combustion at very uniform and controlled temperatures eliminating CO emissions.
  • Yet another object of the instant invention is to increase radiant efficiency to reduce fuel consumption which will then reduce CO 2 and greenhouse gas emissions.
  • a further object of the present invention is to use noble metal mesh screens on the gas outtake ducts to further reduce NO x emissions.
  • a method to precipitate and maintain flameless combustion within a combustion chamber of an integrated heater/burner apparatus comprising the steps of (a) providing a combustion chamber, having an internal side surface shape in communication with at least one hot air injection nozzle, the at least one hot air injection nozzle in further communication with a hot air source external to the combustion chamber; (b) providing at least one fuel gas tip, the at least one fuel gas tip introducing a fuel gas, the fuel gas in communication with a fuel gas source and the combustion chamber; (c) introducing hot air to the combustion chamber via the at least one hot air injection nozzle; (d) providing flue gas inside the combustion chamber; (e) introducing fuel gas to the combustion chamber; (f) inerting the fuel gas with the flue gas; (g) inerting the hot air with the flue gas; and (h) diffusing the inerted fuel gas with the inerted hot air into a molecular composite, wherein the molecular composite has a blend temperature, wherein the blend temperature is in a range from 1000° F. to 1400
  • a method to convert from conventional combustion to flameless combustion within a combustion chamber of an integrated heater/burner apparatus comprising the steps of (a) providing a combustion chamber, having an internal side surface shape, in communication with at least one hot air injection nozzle, the at least one hot air injection nozzle in further communication with a hot air source external to the combustion chamber; (b) providing at least one burner located on the internal side surface shape of the combustion chamber, comprising (i) an ambient air injection nozzle for supplying ambient air into the combustion chamber during conventional combustion mode, the ambient air injection nozzle in communication with the internal side surface shape, the ambient air injection nozzle in further communication with an ambient air supply valve external to the combustion chamber; (ii) an exhaust duct in communication with the internal side surface shape by which internal pressure of the combustion chamber may be equalized; (iii) a venturi in communication with the exhaust duct and in further communication with the ambient air injection nozzle, wherein the venturi travels through the interior of the ambient air injection nozzle; (iv) a fuel gas tip within the exhaust duct, the fuel
  • An integrated industrial heater/burner for precipitating and maintaining flameless combustion comprising (a) a combustion chamber having a top side, a bottom side and an internal side surface shape; (b) at least one burner located on the internal side surface shape of the combustion chamber, comprising (i) an ambient air injection nozzle for supplying ambient air into the combustion chamber during conventional combustion mode, the ambient air injection nozzle in communication with the internal side surface shape; (ii) an exhaust duct in communication with the internal side surface shape; (iii) a venturi in communication with the exhaust duct and in further communication with the ambient air injection nozzle; (iv) a fuel gas tip within the exhaust duct; (v) a pilot gas tip located on the internal side surface shape of the combustion chamber; and (c) at least one hot air injection nozzle for supplying hot air into the combustion chamber during flameless combustion mode, the at least one hot air injection nozzle in communication with the internal side surface shape, the at least one hot air injection nozzle in further communication with an air preheater external to the combustion chamber.
  • a system to precipitate and maintain flameless combustion within a combustion chamber of an integrated heater/burner apparatus comprising (a) a combustion chamber for precipitating and maintaining conventional combustion or flameless combustion, wherein ambient air, hot air, and fuel gas enter the combustion chamber and flue gas having a quantity of NO x emissions exit the combustion chamber; (b) a convection section, located downstream of the combustion chamber, for convectionally heating at least one heat transfer cooling coil using the high temperatures of the flue gas from the exit of the combustion chamber; (c) a stack having a stack damper, located downstream of the convection section, for natural draft operation when the stack damper is open and air preheat operation when the stack damper is closed; (d) an air preheater, located upstream of the combustion chamber, for converting ambient air to hot air for use by the combustion chamber; (e) a forced draft fan having a forced draft fan damper, located upstream of the air preheater, for supplying hot air to the combustion chamber via the air preheater; and (f) an
  • FIG. 1 depicts a flameless combustion chamber of the prior art
  • FIG. 2 a depicts a side view of the combustion chamber during conventional combustion according to one embodiment of the present invention
  • FIG. 2 b depicts a side view of the combustion chamber during flameless combustion according to one embodiment of the present invention
  • FIG. 3 depicts a top view of the combustion chamber illustrating a close-up of an exhaust duct, a fuel gas tip, a venturi, and an ambient air injection nozzle according to one embodiment of the present invention
  • FIG. 4 depicts a schematic depiction of the flameless combustion system showing arrangements of various components according to one embodiment of the present invention
  • FIG. 5 depicts a front view of the hot air injection nozzles showing optional mixing blades according to one embodiment of the present invention.
  • FIG. 6 depicts a side view of the combustion chamber according to one embodiment of the present invention.
  • FIG. 1 illustrates a flameless combustion chamber with a starburst heat transfer tube configuration and singular positioning of a combustion air means, a fuel gas introduction means, and a flue gas exiting means.
  • the apparatus of the prior art is generally indicated as 23 .
  • the prior art invention's essentially oval combustion chamber 22 is shown in communication with an air inlet 28 with the air inlet 28 in further communication with an air source 41 external to the oval combustion chamber 22 .
  • the air source 41 is typically embodied as a blower means or natural draft means well known to those skilled in the art with said blower means or natural draft means introducing heated or unheated air into the oval combustion chamber 22 at an angle generally ranging between 0° and 40° to the internal sidewall of the heater.
  • a fuel gas source 26 is further provided within the oval combustion chamber 22 and introduces a fuel gas 42 , said fuel gas source 26 used and introduction of fuel gas 42 is well known and practiced by those skilled in the art when used in association with contemporary art heaters.
  • the internal oval combustion chamber 22 is first heated by a start up burner 27 located in air inlet 28 to preheat the internal oval combustion chamber 22 to an operational temperature generally in the range between 1400° F. and 2100° F.
  • the flue gas 44 within the oval combustion chamber 22 is recirculated as a consequence of this heating while the combustible air 45 is introduced into the oval combustion chamber 22 at an angle generally between 0° and 40°.
  • Fuel gas 42 is delivered to the oval combustion chamber 22 and commingled with the recirculating flue gas 44 in a manner to create two distinct ribbons, combustible air 45 and inerted fuel gas.
  • Combustible air 45 is continuously introduced into the internal portion of the oval combustion chamber 22 and continues to precipitate the further recirculation and diffusion of combustible air 45 , fuel gas 42 and flue gas 44 molecules until, in combination with the continued monitoring of metered amounts of fuel gas 42 , the molecular composition at the interface of the combustible air 45 and inerted fuel gas reaches or exceeds the auto ignition temperature.
  • the flameless combustion of the prior art apparatus is maintained by either a manual temperature control means well known to those skilled in the art or software control means, in a manner to sustain said flameless combustion in an operational temperature in the oval combustion chamber 22 generally between 1400° F. and 2100° F.
  • Re-circulating flue gas exiting means 49 provides an exiting means by which internal pressure of the oval combustion chamber 22 may be equalized in consideration of purposely introducing fuel gas 42 and combustible air 45 .
  • FIG. 2 a illustrates a side view of the combustion chamber 100 depicting exhaust ducts 120 , fuel gas tips 122 , venturis 124 , ambient air injection nozzles 126 and hot air injection nozzles 128 during conventional combustion according to one embodiment of the present invention.
  • FIG. 3 is a top view of the combustion chamber 100 illustrating a close-up of an exhaust duct 120 , a fuel gas tip 122 , a venturi 124 and an ambient air injection nozzle 126 as shown in FIG. 2 a.
  • the present invention disclosed hereinbelow describes a combustion chamber 100 that is performing conventional combustion, wherein there is a visible flame 134 , and has the capabilities to switch over to 100 percent flameless combustion and, if the need arises, back to conventional combustion.
  • the purpose of performing the combustion process is to heat a fluid that is passing through the heat transfer cooling coils 183 ( FIG. 4 ).
  • the present invention's combustion chamber 100 has a top side 110 , a bottom side 112 and is capable of having an internal side surface shape 114 that is convex, concave, straight or a combination of any of these surface shapes.
  • the combustion chamber 100 is in communication with the ambient air injection nozzle 126 wherein the ambient air injection nozzle 126 is in further communication with the ambient air supply valve 150 , located external to the combustion chamber 100 , for supplying ambient air 127 to the ambient air injection nozzle 126 .
  • the ambient air injection nozzle 126 is also in communication with the exhaust duct 120 via communication through a venturi 124 , which travels from the side surface of the exhaust duct 120 and through the ambient air injection nozzle's 126 interior so that the venturi's 124 exit is essentially vertically aligned with the ambient air injection nozzle's 126 exit.
  • a fuel gas tip 122 which is in communication with a fuel gas source 121 external to the combustion chamber 100 , is housed within the exhaust duct 120 .
  • the fuel gas tip 122 allows the fuel gas 138 to be blown through the venturi 124 and enter the combustion chamber 100 .
  • a pilot gas tip 137 which is in communication with a pilot gas source 136 external to the combustion chamber 100 , is positioned just downstream of the ambient air injection nozzle 126 .
  • the pilot gas tip 137 is used during light off of conventional combustion flame, as illustrated in FIG. 2 a, wherein there is a visible flame 134 and higher NO x emissions.
  • the exhaust duct 120 is in communication with the combustion chamber 100 to facilitate withdrawal of stagnant or nearly stagnant flue gas 135 hovering above or near the exhaust duct 120 from within the combustion chamber's 100 interior.
  • the exhaust duct is typically 18 to 24 inches in length. It will be understood by one skilled in the art that the exhaust duct 120 lengths may be shorter or longer without departing from the scope and spirit of the present invention.
  • a portion of the flue gas 135 is mixed with the entering fuel gas 138 to form inert fuel gas 130 , which then exits the venturi 124 and re-enters the combustion chamber 100 .
  • the venturi 124 creates turbulence between the fuel gas 138 and the flue gas 135 , thereby allowing the two gases to uniformly mix with each other and form inert fuel gas 130 .
  • the unit described above is collectively known as a burner 119 .
  • the flue gas 135 mentioned above may be created within the combustion chamber 100 during operation in the conventional combustion mode or may be supplied from a turbine exhaust (not shown) or any other outside source capable of delivering the proper inerting and temperature requirements to create the inert fuel gas 130 stream. It will be understood by one skilled in the art, however, that although the preferred embodiment depicts only two burners 119 per series and that they are located at opposite ends, these burners 119 are not limited in number or location, but may be increased or decreased in numbers as well as having their positioning relocated without departing from the scope and spirit of the present invention.
  • a plurality of exhaust ducts 120 are positioned columnwise between the two burners 119 , one located next to the combustion chamber's 100 top side 110 and the other positioned next to the combustion chamber's 100 bottom side 112 . These plurality of exhaust ducts 120 allow for flue gas 135 to exit the combustion chamber 100 via negative pressure to allow for the new gases entering the combustion chamber 100 .
  • two hot air injection nozzles 128 are located downstream of the two burners 119 and are position in the center of the combustion chamber's 100 top side 110 and the combustion chamber's 100 bottom side 112 . The hot air injection nozzles 128 are not in use during conventional combustion, which is depicted in FIG. 2 a.
  • Each of the hot air injection nozzles 128 may be positioned along the combustion chamber's 100 top side 110 and the combustion chamber's 100 bottom side 112 with the two burners 119 located at the center of the combustion chamber's 100 top side 110 and the combustion chamber's 100 bottom side 112 , so long as there is a blend of the inert hot air 140 from the hot air injection nozzles 128 and the inert fuel gas 130 , without departing from the scope and spirit of the present invention. Also, although only one series of burners 119 , exhaust ducts 120 and hot air injection nozzles 128 has been described, FIG.
  • FIG. 2 a illustrates that there may exist a number of these series, having burners 119 n, exhaust ducts 120 n and hot air injection nozzles 128 n, throughout the present invention's combustion chamber's 100 internal side surface shape 114 and are distanced approximately 25 feet apart. This distance is approximate and may vary depending on the distance required to complete the combustion process and will depend on the specifics of the combustion and heat transfer application, whether performed by conventional combustion or flameless combustion.
  • FIG. 2 b illustrates a side view of the combustion chamber 100 described in FIG. 2 a and depicts the same exhaust ducts 120 , fuel gas tips 122 , venturis 124 , ambient air injection nozzles 126 and hot air injection nozzles 128 but during flameless combustion according to one embodiment of the present invention.
  • FIG. 2 b shows the combustion chamber 100 , having a top side 110 and a bottom side 112 , operating in 100 percent flameless combustion mode.
  • the ambient air supply valve 150 is completely shut so that ambient air 127 does not flow through the ambient air injection nozzle 126 and into the combustion chamber 100 .
  • the pilot gas 139 may be flowing through the pilot gas tip 137 or may be shut off completely during the flameless combustion mode.
  • the fuel gas source 121 continues to supply the fuel gas 138 , which is mixed with some of the flue gas 135 exiting the exhaust duct 120 .
  • the venturi 124 creates turbulence between the fuel gas 138 and the flue gas 135 , thereby allowing the two gases to uniformly mix with each other and form inert fuel gas 130 which then exits the venturi 124 and enters the combustion chamber 100 .
  • inert fuel gas 130 is the only gas exiting the burners 119 .
  • the inert fuel gas 130 exits the venturi 124 and attaches to the combustion chamber's 100 internal side surface shape 114 via the Coanda Effect. Since the ambient air supply valve 150 is completely closed, hot air 142 ( FIG. 4 ) is supplied through the hot air injection nozzles 128 .
  • the hot air 142 ( FIG. 4 ) is supplied through the hot air injection nozzles 128 .
  • the flue gas 135 used during the flameless combustion mode may be created within the combustion chamber 100 during operation in the conventional combustion mode or may be supplied from a turbine exhaust (not shown) or any other outside source capable of delivering the proper inerting and temperature requirements to create the inert fuel gas 130 stream.
  • the inert hot air 140 flows from the hot air injection nozzle's 128 exit and also attaches to the combustion chamber's 100 internal side surface shape 114 via the Coanda Effect.
  • This attachment of the inert fuel gas 130 and the inert hot air 140 to the combustion chamber's 100 internal side surface shape 114 is explained by the Coanda Effect principles and allows the combustion chamber's 100 internal side surface shape 114 to have a concave shape, a convex shape, a straight shape or any combinations thereof.
  • the blend temperature which is the average of the inert fuel gas 130 temperature and the inert hot air 140 temperature, must fall between approximately 1000° F.
  • the inert fuel gas 130 and the inert hot air 140 flow side by side until they mix and precipitate flameless combustion. This side by side flow allows the inert hot air 140 and the inert fuel gas 130 to diffuse into each other slowly enough so that it does not get too hot during combustion, but fast enough and at a high enough energy level for molecular movement so that there is flameless combustion.
  • the mixing of these two gases occur more uniformly than if the gases were on top of each other, thus eliminating hot spots.
  • FIG. 2 b illustrates that there may exist a number of these series, having burners 119 n, exhaust ducts 120 n and hot air injection nozzles 128 n, throughout the present invention's combustion chamber's 100 internal side surface shape 114 and are distanced approximately 25 feet apart. This distance is approximate and may vary so long as the distance is sufficiently long to complete the combustion process and will depend on the specifics of the combustion and heat transfer application.
  • FIG. 5 depicts a front view of the hot air injection nozzle 128 showing optional mixer blades 160 installed on them according to one embodiment of the present invention.
  • these mixer blades 160 which may be fixed or rotatable, facilitate in uniformly mixing the flue gas 135 with the hot air 142 ( FIG. 4 ) to form inert hot air 140 at the hot air injection nozzle's 128 exit.
  • These mixer blades 160 facilitate the mixing because they cause turbulence between the hot air 142 ( FIG. 4 ) and the flue gas 135 .
  • the air side pressure drop through the hot air injection nozzle 128 is generally between 1′′ H 2 0 and 5′′ H 2 0.
  • the present invention is capable of having high hot air side pressure drops and significant mixing energy to inert the hot air 142 with the flue gas 135 because the hot air injection nozzles 128 are unique and separate from the ambient air injection nozzles 126 .
  • the prior art does not have these capabilities because the prior art has combustible air 45 ( FIG. 1 ), ambient natural draft and hot air, entering through the same air inlet 28 .
  • FIG. 1 the preferred embodiment depicts mixer blades 160 having eight (8) blades, these mixer blades 160 are not limited in number, but may be increased or decreased in number without departing from the scope and spirit of the present invention. Also, one skilled in the art will understand that these mixer blades 160 may be pitched at various angles without departing from the scope and spirit of the present invention.
  • FIG. 6 shows a side view of the combustion chamber 100 , having a top wall 110 , a bottom wall 112 and an internal side surface shape 114 , depicting exhaust ducts 120 , fuel gas tips 122 , venturis 124 , ambient air injection nozzles 126 and hot air injection nozzles 128 in a layered arrangement separated by a corbel 170 according to one embodiment of the present invention.
  • each layer is approximately ten (10) feet in width with each burner 119 n series substantially equally spaced at approximately 25 feet. This layered arrangement may also be done in a non-expansion combustion chamber 100 wherein the combustion chamber 100 is limited to certain special requirements or shape requirements.
  • FIG. 6 Shows have been shown in FIG. 6 to illustrate the flow of gas and the direction of combustion for each layer. The arrows also show that the one layer's top portion's flue gas 135 circulates to another layer's bottom portion's flue gas 135 , and visa versa.
  • the burners 119 depicted in FIG. 6 are identical to the burners 119 depicted in FIG. 2 b, whereby the burners 119 comprise an exhaust duct 120 , a fuel gas tip 122 , a pilot gas tip 137 , a venturi 124 and an ambient air injection nozzle 126 .
  • the preferred embodiment depicts three (3) layers separated by two (2) corbels 170 , these layers are not limited in number, but may be increased or decreased in number without departing from the scope and spirit of the present invention. It will be understood by one skilled in the art, however, that although the preferred embodiment depicts the layers having a width of ten (10) feet and the burner 119 n series spaced approximately 25 feet apart, these distances may be increased or decreased without departing from the scope and spirit of the present invention. It will also be appreciated that because of the Coanda Effect the view depicted in FIG. 6 could also be vertical (typical of wall) or horizontal (typical of roof or floor) and be concave, convex, straight or in any combination.
  • the combustion chamber 100 first commences combustion by conventional combustion, as shown in FIG. 2 a, and may then switch to flameless combustion, as illustrated in FIG. 2 b, using the system shown in FIG. 4 .
  • the first step to operate the present invention is to start-up the combustion chamber 100 , which has a top side 110 and a bottom side 112 , in conventional combustion mode.
  • the system must first ensure that combustibles are not present within the combustion chamber 100 , usually by using a gas tester (not shown). Ambient air 127 is already, entering the combustion chamber 100 through the ambient air supply valve 150 because it is naturally drafting, thus making the combustion chamber 100 an air-rich environment. Once the combustibles are verified to be absent, the system allows the pilot gas 139 , usually natural gas, to flow into the combustion chamber 100 and then lights the pilot gas tip 137 .
  • the system is ready to light the visible flame 134 , which in the present invention is located off the ambient air nozzle 126 .
  • the system then opens the fuel gas supply valve (not shown), thereby allowing fuel gas 138 to enter the combustion chamber 100 and cause the visible flame 134 to light.
  • the system usually would turn off the pilot; however, some systems may elect to keep the pilot turned on.
  • the combustion process is occurring in a conventional combustion manner and has a visible flame 134 , caused by the carbon cracking.
  • Temperatures within the visible flame 134 can reach approximately 3800° F. resulting in high quantities of NO x emissions, typically about 50 to 60 ppm. NO x emissions begin to form once the temperature reaches above 2200° F. during combustion.
  • the flue gas 135 exits the exhaust ducts 120 and passes through a noble metal screen 180 .
  • This noble metal screen 180 is made from any noble metal, such as gold, silver, platinum, palladium, tantalum, rhodium, ruthenium, rhenium, osmium or iridium.
  • a noble metal alloy would also be suitable material for constructing the noble metal screen 180 .
  • the noble metal screen 180 is used to lower the NO x emissions.
  • the flue gas 135 containing the NO x emissions then proceeds to a convection section 182 where heat from the flue gas 135 is transferred to heat transfer cooling coils 183 convectionally.
  • the bypass damper 184 is used to control the hot air 142 temperature leaving the air preheater 190 (and thus the required blend temperature for flameless combustion) when the system is in a turn down mode.
  • the flue gas 135 then proceeds to the stack 186 .
  • the stack damper 188 is 100 percent open when conventional combustion is occurring at 100 percent. Thus, flue gas 135 does not flow into the air preheater 190 , nor does ambient air 127 enter the air preheater 190 .
  • the combustion process may be converted to flameless combustion ( FIG. 2 b ) so that NO x emissions are significantly reduced, typically around 5-8 ppm.
  • FIG. 2 b the system will need to go through a series of automatic steps, controlled via a computer program.
  • the conversion process from conventional combustion to flameless combustion and back to conventional combustion occurs automatically with the computer program controlling the ambient air supply valve 150 , the stack damper 188 , the forced draft fan damper 192 , and the induced draft fan damper 196 .
  • the automatic system can be operated in a manual mode, one significant improvement associated with the present invention is complete automatic control and monitoring.
  • the hot air 142 Before introducing hot air 142 into the combustion chamber 100 via the hot air injection nozzle 128 , the hot air 142 must be first heated to a temperature such that the blend temperature of the inert hot air 140 ( FIG. 2 b ) and the inert fuel gas 130 ( FIG. 2 b ) is in the range from approximately 1000° F. to 1400° F. In the preferred embodiment, the hot air 142 is at approximately 850° F. or higher, the flue gas 135 is at approximately 1650° F. and the fuel gas 138 is approximately between 60° F. to 120° F. In the present invention, the individual gas temperatures are not critical; however, the blend temperature of the inert fuel gas 130 ( FIG. 2 b ) and the inert hot air 140 ( FIG. 2 b ) is most critical.
  • the ambient air supply valve 150 and the stack damper 188 are 100 percent open while the forced draft fan damper 192 and the induced draft fan damper 196 are 100 percent closed, but with the forced draft fan 194 and the induced draft fan 198 running.
  • the first step is to close the ambient air supply valve 150 and the stack damper 188 by ten (10) percent and open the forced draft fan damper 192 and the induced draft fan damper 196 by ten (10) percent. This step will allow conventional combustion to continue at 90 percent and flameless combustion to precipitate at 10 (ten) percent.
  • Ambient air 127 passes through the ambient air supply valve 150 at 90% mass flow and enters the combustion chamber 100 via the ambient air injection nozzles 126 ( FIG. 2 a ).
  • ambient air 127 passes through the forced draft fan damper 192 at ten (10) percent mass flow and is pumped through the air preheater 190 by the forced draft fan 194 .
  • the air preheater creates hot air 142 at 850° F. or higher which then enters the combustion chamber 100 through the hot air injection nozzles 128 .
  • the flue gas 135 exits the combustion chamber 100 through the exhaust ducts 120 .
  • the flue gas 135 then passes through the noble metal screen 180 and through the convection section 182 .
  • the flue gas 135 then enters the stack 186 wherein 90 percent goes up the stack 186 and out of the system and ten (10) percent is recycled through the air preheater 190 and the induced draft fan damper 196 via the induced draft fan 198 .
  • the induced draft fan 198 pumps this gas back to the stack 186 and out of the system.
  • the air preheater 190 uses this gas to heat the ambient air 127 to create hot air 142 .
  • the computer program detects the temperatures to be stabilized, the computer program further pinches on the ambient air supply valve 150 and the stack damper 188 by another ten (10) percent and opens the forced draft fan damper 192 and the induced draft fan damper 196 by another ten (10) percent, thus resulting in the ambient air supply valve 150 and the stack damper 188 being 80 percent open and the forced draft fan damper 192 and the induced draft fan damper 196 being 20 percent open.
  • This procedure continues until the ambient air supply valve 150 and the stack damper 188 are 100 percent closed and the forced draft fan damper 192 and the induced draft fan damper 196 are opened to proper settings to maintain draft and O 2 levels.
  • the combustion chamber 100 is operating at 100 percent flameless combustion, as shown in FIG.
  • the switchback process is very quick and does not require gradual percent increments of the closing an opening of valves.
  • One reason why this switchback might be required is that the hot air 142 stops flowing into the hot air injection nozzle 128 , which may be caused by electrical power loss, a fan shutting down, etc.
  • This switchback process is quick because the present embodiment requires the air to be moved from the burners 119 to the hot air injection nozzles 128 for conversion to flameless combustion and back to the burners 119 for conversion back to conventional combustion. In the present invention the air moves, and not the fuel gas 138 , which allows for a safer and sure switchback without the loss of combustion or the necessity to restart the heater.
  • the ambient air supply valve 150 and the stack damper 188 are set to fail open.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Of Fluid Fuel (AREA)
US11/325,979 2006-01-05 2006-01-05 Systems, apparatus and method for flameless combustion absent catalyst or high temperature oxidants Abandoned US20070269755A2 (en)

Priority Applications (9)

Application Number Priority Date Filing Date Title
US11/325,979 US20070269755A2 (en) 2006-01-05 2006-01-05 Systems, apparatus and method for flameless combustion absent catalyst or high temperature oxidants
CA002633753A CA2633753A1 (en) 2006-01-05 2007-01-03 System, apparatus and method for flameless combustion absent catalyst or high temperature oxidants
PCT/US2007/000041 WO2007081687A2 (en) 2006-01-05 2007-01-03 System, apparatus and method for flameless combustion absent catalyst or high temperature oxidants
EP07717783.0A EP1971803A4 (en) 2006-01-05 2007-01-03 FLAME-FREE COMBUSTION SYSTEM, APPARATUS, AND METHOD IN THE ABSENCE OF HIGH-TEMPERATURE CATALYSTS OR OXIDANTS
BRPI0706216A BRPI0706216B1 (pt) 2006-01-05 2007-01-03 métodos para precipitar e sustentar combustão sem chama e para converter combustão convencional para combustão sem chama, e, aparelho e sistema para precipitar e manter combustão sem chama
JP2008549534A JP5074421B2 (ja) 2006-01-05 2007-01-03 触媒又は高温酸化剤不在の無炎燃焼のためのシステム、装置及び方法
CN2007800064567A CN101389905B (zh) 2006-01-05 2007-01-03 用于没有催化剂或高温氧化剂的无火焰燃烧的系统、设备和方法
TW096100315A TWI416050B (zh) 2006-01-05 2007-01-04 用於在不存有觸媒或高溫氧化劑下無焰燃燒之系統、裝置和方法
KR1020087018977A KR101477519B1 (ko) 2006-01-05 2008-07-31 촉매 또는 고온산화제가 배제된 불꽃 없는 연소를 위한시스템, 장치 및 방법

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US20070269755A2 true US20070269755A2 (en) 2007-11-22

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JP (1) JP5074421B2 (zh)
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100227284A1 (en) * 2006-01-31 2010-09-09 Tenova S.P.A. Flat-flame vault burner with low polluting emissions
US8128399B1 (en) * 2008-02-22 2012-03-06 Great Southern Flameless, Llc Method and apparatus for controlling gas flow patterns inside a heater chamber and equalizing radiant heat flux to a double fired coil
US20120214116A1 (en) * 2011-02-22 2012-08-23 Cameron Andrew M Apparatus and method for heating a blast furnace stove
US20140272736A1 (en) * 2013-03-15 2014-09-18 Fives North American Combustion, Inc. Low NOx Combustion Method and Apparatus
US8915731B2 (en) 2010-12-30 2014-12-23 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Flameless combustion burner
WO2017129872A1 (fr) * 2016-01-28 2017-08-03 Lucas Jean Marie Gabriel Charles Procédé de réaction homogénéisée, telle qu'une combustion de gaz pauvre, et dispositifs le mettant en œuvre

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080081301A1 (en) * 2006-10-03 2008-04-03 Hannum Mark C Low NOx combustion
ES2567784T3 (es) * 2009-11-26 2016-04-26 Linde Ag Método para calentar una estufa de alto horno
KR101724904B1 (ko) * 2015-09-16 2017-04-07 현대자동차주식회사 연료전지 시스템용 수소 공급 조절 장치
DE102016117408B4 (de) * 2016-09-15 2020-11-26 Eberspächer Climate Control Systems GmbH Brennkammerbaugruppe für ein brennstoffbetriebenes Fahrzeugheizgerät
EP3614049A1 (en) * 2018-08-22 2020-02-26 Linde Aktiengesellschaft A method of operating a burner for performing flameless combustion or at least semi flameless combustion and fluid supply system

Citations (65)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034718A (en) * 1960-04-18 1962-05-15 Foxboro Co Computer-controller set point system
US3309866A (en) * 1965-03-11 1967-03-21 Gen Electric Combustion process and apparatus
US3509834A (en) * 1967-09-27 1970-05-05 Inst Gas Technology Incinerator
US3869244A (en) * 1973-01-24 1975-03-04 Said Robert Von Linde By Said Burner unit
US3928961A (en) * 1971-05-13 1975-12-30 Engelhard Min & Chem Catalytically-supported thermal combustion
US3989019A (en) * 1974-07-29 1976-11-02 Brandt Larry A Fuel heating apparatus
US4000978A (en) * 1973-03-12 1977-01-04 Rockwell International Corporation Thermal recombiner
US4629413A (en) * 1984-09-10 1986-12-16 Exxon Research & Engineering Co. Low NOx premix burner
US4698015A (en) * 1985-12-31 1987-10-06 Gerald Brunel Installation for monitoring the functioning of a boiler
JPS63282411A (ja) * 1987-05-15 1988-11-18 Babcock Hitachi Kk 高安定燃焼型バ−ナ
US4943402A (en) * 1989-10-31 1990-07-24 E. I. Du Pont De Nemours And Company Process for removing chloroprene dimers from polychloroprene
US5044932A (en) * 1989-10-19 1991-09-03 It-Mcgill Pollution Control Systems, Inc. Nitrogen oxide control using internally recirculated flue gas
US5135387A (en) * 1989-10-19 1992-08-04 It-Mcgill Environmental Systems, Inc. Nitrogen oxide control using internally recirculated flue gas
US5154599A (en) * 1990-06-29 1992-10-13 Wuenning Joachim Method for apparatus for combusting fuel in a combustion chamber
US5168835A (en) * 1991-08-26 1992-12-08 Serchen Corporation Pulsating combustion device
US5255742A (en) * 1992-06-12 1993-10-26 Shell Oil Company Heat injection process
US5403181A (en) * 1992-06-05 1995-04-04 Nippon Furnace Kogyo Kaisha, Ltd Method of low-NOx combustion and burner device for effecting same
US5411394A (en) * 1990-10-05 1995-05-02 Massachusetts Institute Of Technology Combustion system for reduction of nitrogen oxides
EP0718554A2 (en) * 1994-12-20 1996-06-26 The BOC Group plc A combustion apparatus
US5571006A (en) * 1995-07-24 1996-11-05 Tokyo Gas Company, Ltd. Regenerative burner, burner system and method of burning
US5618173A (en) * 1994-12-15 1997-04-08 W.R. Grace & Co.-Conn. Apparatus for burning oxygenic constituents in process gas
US5636977A (en) * 1994-10-13 1997-06-10 Gas Research Institute Burner apparatus for reducing nitrogen oxides
US5681159A (en) * 1994-03-11 1997-10-28 Gas Research Institute Process and apparatus for low NOx staged-air combustion
US5688115A (en) * 1995-06-19 1997-11-18 Shell Oil Company System and method for reduced NOx combustion
US5709174A (en) * 1993-05-26 1998-01-20 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Hot water heater
US5829369A (en) * 1996-11-12 1998-11-03 The Babcock & Wilcox Company Pulverized coal burner
US5842851A (en) * 1995-04-05 1998-12-01 Application Des Gaz Induced air catalytic burner, and apparatus incorporating such a burner
US5992141A (en) * 1996-04-02 1999-11-30 Kleen Air Systems, Inc. Ammonia injection in NOx control
US6206686B1 (en) * 1998-05-01 2001-03-27 North American Manufacturing Company Integral low NOx injection burner
EP1096202A1 (en) * 1999-10-26 2001-05-02 John Zink Company,L.L.C. Fuel dilution methods and apparatus for NOx reduction
US6250066B1 (en) * 1996-11-26 2001-06-26 Honeywell International Inc. Combustor with dilution bypass system and venturi jet deflector
US6254379B1 (en) * 2000-09-27 2001-07-03 Praxair Technology, Inc. Reagent delivery system
US6269882B1 (en) * 1995-12-27 2001-08-07 Shell Oil Company Method for ignition of flameless combustor
US6301875B1 (en) * 2000-05-31 2001-10-16 Coen Company, Inc. Turbine exhaust gas duct heater
US6321715B1 (en) * 2000-06-23 2001-11-27 Visteon Global Technologies, Inc. Conjugate vortex stratified exhaust gas recirculation system for internal combustion engine
EP1167878A1 (en) * 2000-06-20 2002-01-02 John Zink Company,L.L.C. Fuel dilution methods and apparatus for NOx reduction
US20020069648A1 (en) * 1999-08-09 2002-06-13 Yeshayahou Levy Novel design of adiabatic combustors
US20020090583A1 (en) * 2000-12-06 2002-07-11 Cain Bruce E. Burner apparatus and method
US20020142256A1 (en) * 2001-03-28 2002-10-03 Ovidiu Marin High velocity injection of enriched oxygen gas having low amount of oxygen enrichment
US20020160330A1 (en) * 2001-04-30 2002-10-31 Adnan Eroglu Catalytic burner
US20020197574A1 (en) * 2001-06-25 2002-12-26 Jones Andrew P. Methods and apparatus for burning fuel with low NOx formation
US6579085B1 (en) * 2000-05-05 2003-06-17 The Boc Group, Inc. Burner and combustion method for the production of flame jet sheets in industrial furnaces
US6659762B2 (en) * 2001-09-17 2003-12-09 L'air Liquide - Societe Anonyme A' Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Oxygen-fuel burner with adjustable flame characteristics
US6672863B2 (en) * 2001-06-01 2004-01-06 Alstom Technology Ltd Burner with exhaust gas recirculation
US6773256B2 (en) * 2002-02-05 2004-08-10 Air Products And Chemicals, Inc. Ultra low NOx burner for process heating
US20040182292A1 (en) * 2001-06-26 2004-09-23 Yoram Shimrony Incineration process using high oxygen concentrations
US6796789B1 (en) * 2003-01-14 2004-09-28 Petro-Chem Development Co. Inc. Method to facilitate flameless combustion absent catalyst or high temperature oxident
US6829891B2 (en) * 2000-11-17 2004-12-14 Toyota Jidosha Kabushiki Kaisha Exhaust emission control device and method of controlling exhaust emission
US6863522B2 (en) * 2000-11-09 2005-03-08 Ballard Power Systems Ag Method for introducing fuel and/or thermal energy into a gas stream
US20050147936A1 (en) * 2004-01-03 2005-07-07 Loving Ronald E. Heat reactor
US20050282097A1 (en) * 2002-12-11 2005-12-22 Elisabetta Carrea Method for combustion of a fuel
US20060029894A1 (en) * 2004-06-10 2006-02-09 Zinn Ben T Stagnation point reverse flow combustor for a combustion system
US20060035188A1 (en) * 2002-09-02 2006-02-16 Peter Berenbrink Burner
US7008219B2 (en) * 2001-08-09 2006-03-07 Honda Giken Kogyo Kabushiki Kaisha Boil-off gas processing system using electric heater
US7062917B2 (en) * 2002-04-23 2006-06-20 Ws Warmeprozesstechnik Gmbh Combustion chamber with flameless oxidation
US7229483B2 (en) * 2001-03-12 2007-06-12 Frederick Michael Lewis Generation of an ultra-superheated steam composition and gasification therewith
US7244119B2 (en) * 2002-12-06 2007-07-17 John Zink Company, Llc Compact low NOx gas burner apparatus and methods
US7476099B2 (en) * 2002-03-16 2009-01-13 Exxonmobil Chemicals Patents Inc. Removable light-off port plug for use in burners
US20090056696A1 (en) * 2007-07-20 2009-03-05 Abdul Wahid Munshi Flameless combustion heater
US20090120338A1 (en) * 2005-10-28 2009-05-14 L'air Liquide Societe Anonyme Pour L'etude Et L 'exploitation Des Procedes Georges Claude Process and Apparatus for Low-NOx Combustion
US7566218B2 (en) * 2004-09-14 2009-07-28 Acl Manufacturing Inc. Burner assembly
US7905722B1 (en) * 2002-02-08 2011-03-15 Heath Rodney T Control of an adjustable secondary air controller for a burner
US8449288B2 (en) * 2003-03-19 2013-05-28 Nalco Mobotec, Inc. Urea-based mixing process for increasing combustion efficiency and reduction of nitrogen oxides (NOx)
US8485813B2 (en) * 2008-01-11 2013-07-16 Hauck Manufacturing Company Three stage low NOx burner system with controlled stage air separation
US8506287B2 (en) * 2006-03-01 2013-08-13 Honeywell International Inc. Industrial burner

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5333574A (en) * 1991-09-11 1994-08-02 Mark Iv Transportation Products Corporation Compact boiler having low NOX emissions
US5470224A (en) * 1993-07-16 1995-11-28 Radian Corporation Apparatus and method for reducing NOx , CO and hydrocarbon emissions when burning gaseous fuels
WO2001007833A1 (en) * 1999-07-23 2001-02-01 Dyson Hotwork Limited Improved industrial burner for fuel
US6138588A (en) * 1999-08-10 2000-10-31 Abb Alstom Power Inc. Method of operating a coal-fired furnace to control the flow of combustion products
US6422858B1 (en) * 2000-09-11 2002-07-23 John Zink Company, Llc Low NOx apparatus and methods for burning liquid and gaseous fuels
SE0202836D0 (sv) * 2002-09-25 2002-09-25 Linde Ag Method and apparatus for heat treatment
ITMI20032327A1 (it) * 2003-11-28 2005-05-29 Techint Spa Bruciatore a gas a basse emissioni inquinanti.

Patent Citations (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034718A (en) * 1960-04-18 1962-05-15 Foxboro Co Computer-controller set point system
US3309866A (en) * 1965-03-11 1967-03-21 Gen Electric Combustion process and apparatus
US3509834A (en) * 1967-09-27 1970-05-05 Inst Gas Technology Incinerator
US3928961A (en) * 1971-05-13 1975-12-30 Engelhard Min & Chem Catalytically-supported thermal combustion
US3869244A (en) * 1973-01-24 1975-03-04 Said Robert Von Linde By Said Burner unit
US4000978A (en) * 1973-03-12 1977-01-04 Rockwell International Corporation Thermal recombiner
US3989019A (en) * 1974-07-29 1976-11-02 Brandt Larry A Fuel heating apparatus
US4629413A (en) * 1984-09-10 1986-12-16 Exxon Research & Engineering Co. Low NOx premix burner
US4698015A (en) * 1985-12-31 1987-10-06 Gerald Brunel Installation for monitoring the functioning of a boiler
JPS63282411A (ja) * 1987-05-15 1988-11-18 Babcock Hitachi Kk 高安定燃焼型バ−ナ
US5316469A (en) * 1989-10-19 1994-05-31 Koch Engineering Company, Inc. Nitrogen oxide control using internally recirculated flue gas
US5044932A (en) * 1989-10-19 1991-09-03 It-Mcgill Pollution Control Systems, Inc. Nitrogen oxide control using internally recirculated flue gas
US5135387A (en) * 1989-10-19 1992-08-04 It-Mcgill Environmental Systems, Inc. Nitrogen oxide control using internally recirculated flue gas
US4943402A (en) * 1989-10-31 1990-07-24 E. I. Du Pont De Nemours And Company Process for removing chloroprene dimers from polychloroprene
US5154599A (en) * 1990-06-29 1992-10-13 Wuenning Joachim Method for apparatus for combusting fuel in a combustion chamber
US5411394A (en) * 1990-10-05 1995-05-02 Massachusetts Institute Of Technology Combustion system for reduction of nitrogen oxides
US5168835A (en) * 1991-08-26 1992-12-08 Serchen Corporation Pulsating combustion device
US5403181A (en) * 1992-06-05 1995-04-04 Nippon Furnace Kogyo Kaisha, Ltd Method of low-NOx combustion and burner device for effecting same
US5255742A (en) * 1992-06-12 1993-10-26 Shell Oil Company Heat injection process
US5709174A (en) * 1993-05-26 1998-01-20 Fraunhofer-Gesellschaft Zur Foerderung Der Angewandten Forschung E.V. Hot water heater
US5681159A (en) * 1994-03-11 1997-10-28 Gas Research Institute Process and apparatus for low NOx staged-air combustion
US5636977A (en) * 1994-10-13 1997-06-10 Gas Research Institute Burner apparatus for reducing nitrogen oxides
US5618173A (en) * 1994-12-15 1997-04-08 W.R. Grace & Co.-Conn. Apparatus for burning oxygenic constituents in process gas
EP0718554A2 (en) * 1994-12-20 1996-06-26 The BOC Group plc A combustion apparatus
US5842851A (en) * 1995-04-05 1998-12-01 Application Des Gaz Induced air catalytic burner, and apparatus incorporating such a burner
US5688115A (en) * 1995-06-19 1997-11-18 Shell Oil Company System and method for reduced NOx combustion
US5571006A (en) * 1995-07-24 1996-11-05 Tokyo Gas Company, Ltd. Regenerative burner, burner system and method of burning
US6269882B1 (en) * 1995-12-27 2001-08-07 Shell Oil Company Method for ignition of flameless combustor
US5992141A (en) * 1996-04-02 1999-11-30 Kleen Air Systems, Inc. Ammonia injection in NOx control
US5829369A (en) * 1996-11-12 1998-11-03 The Babcock & Wilcox Company Pulverized coal burner
US6250066B1 (en) * 1996-11-26 2001-06-26 Honeywell International Inc. Combustor with dilution bypass system and venturi jet deflector
US6206686B1 (en) * 1998-05-01 2001-03-27 North American Manufacturing Company Integral low NOx injection burner
US6826912B2 (en) * 1999-08-09 2004-12-07 Yeshayahou Levy Design of adiabatic combustors
US20020069648A1 (en) * 1999-08-09 2002-06-13 Yeshayahou Levy Novel design of adiabatic combustors
EP1096202A1 (en) * 1999-10-26 2001-05-02 John Zink Company,L.L.C. Fuel dilution methods and apparatus for NOx reduction
US6579085B1 (en) * 2000-05-05 2003-06-17 The Boc Group, Inc. Burner and combustion method for the production of flame jet sheets in industrial furnaces
US6301875B1 (en) * 2000-05-31 2001-10-16 Coen Company, Inc. Turbine exhaust gas duct heater
EP1167878A1 (en) * 2000-06-20 2002-01-02 John Zink Company,L.L.C. Fuel dilution methods and apparatus for NOx reduction
US6321715B1 (en) * 2000-06-23 2001-11-27 Visteon Global Technologies, Inc. Conjugate vortex stratified exhaust gas recirculation system for internal combustion engine
US6254379B1 (en) * 2000-09-27 2001-07-03 Praxair Technology, Inc. Reagent delivery system
US6863522B2 (en) * 2000-11-09 2005-03-08 Ballard Power Systems Ag Method for introducing fuel and/or thermal energy into a gas stream
US6829891B2 (en) * 2000-11-17 2004-12-14 Toyota Jidosha Kabushiki Kaisha Exhaust emission control device and method of controlling exhaust emission
US20020090583A1 (en) * 2000-12-06 2002-07-11 Cain Bruce E. Burner apparatus and method
US7229483B2 (en) * 2001-03-12 2007-06-12 Frederick Michael Lewis Generation of an ultra-superheated steam composition and gasification therewith
US6685464B2 (en) * 2001-03-28 2004-02-03 L'Air Liquide - Societe Anonyme à Directoire et Conseil de Surveillance pour l'Etude et l'Exploitation des Procedes Georges Claude High velocity injection of enriched oxygen gas having low amount of oxygen enrichment
US20020142256A1 (en) * 2001-03-28 2002-10-03 Ovidiu Marin High velocity injection of enriched oxygen gas having low amount of oxygen enrichment
US20020160330A1 (en) * 2001-04-30 2002-10-31 Adnan Eroglu Catalytic burner
US6672863B2 (en) * 2001-06-01 2004-01-06 Alstom Technology Ltd Burner with exhaust gas recirculation
US20020197574A1 (en) * 2001-06-25 2002-12-26 Jones Andrew P. Methods and apparatus for burning fuel with low NOx formation
US20040182292A1 (en) * 2001-06-26 2004-09-23 Yoram Shimrony Incineration process using high oxygen concentrations
US7008219B2 (en) * 2001-08-09 2006-03-07 Honda Giken Kogyo Kabushiki Kaisha Boil-off gas processing system using electric heater
US6659762B2 (en) * 2001-09-17 2003-12-09 L'air Liquide - Societe Anonyme A' Directoire Et Conseil De Surveillance Pour L'etude Et L'exploitation Des Procedes Georges Claude Oxygen-fuel burner with adjustable flame characteristics
US6773256B2 (en) * 2002-02-05 2004-08-10 Air Products And Chemicals, Inc. Ultra low NOx burner for process heating
US7905722B1 (en) * 2002-02-08 2011-03-15 Heath Rodney T Control of an adjustable secondary air controller for a burner
US7476099B2 (en) * 2002-03-16 2009-01-13 Exxonmobil Chemicals Patents Inc. Removable light-off port plug for use in burners
US7062917B2 (en) * 2002-04-23 2006-06-20 Ws Warmeprozesstechnik Gmbh Combustion chamber with flameless oxidation
US20060035188A1 (en) * 2002-09-02 2006-02-16 Peter Berenbrink Burner
US7244119B2 (en) * 2002-12-06 2007-07-17 John Zink Company, Llc Compact low NOx gas burner apparatus and methods
US20050282097A1 (en) * 2002-12-11 2005-12-22 Elisabetta Carrea Method for combustion of a fuel
US6796789B1 (en) * 2003-01-14 2004-09-28 Petro-Chem Development Co. Inc. Method to facilitate flameless combustion absent catalyst or high temperature oxident
US8449288B2 (en) * 2003-03-19 2013-05-28 Nalco Mobotec, Inc. Urea-based mixing process for increasing combustion efficiency and reduction of nitrogen oxides (NOx)
US20050147936A1 (en) * 2004-01-03 2005-07-07 Loving Ronald E. Heat reactor
US20060029894A1 (en) * 2004-06-10 2006-02-09 Zinn Ben T Stagnation point reverse flow combustor for a combustion system
US7566218B2 (en) * 2004-09-14 2009-07-28 Acl Manufacturing Inc. Burner assembly
US20090120338A1 (en) * 2005-10-28 2009-05-14 L'air Liquide Societe Anonyme Pour L'etude Et L 'exploitation Des Procedes Georges Claude Process and Apparatus for Low-NOx Combustion
US8506287B2 (en) * 2006-03-01 2013-08-13 Honeywell International Inc. Industrial burner
US20090056696A1 (en) * 2007-07-20 2009-03-05 Abdul Wahid Munshi Flameless combustion heater
US8485813B2 (en) * 2008-01-11 2013-07-16 Hauck Manufacturing Company Three stage low NOx burner system with controlled stage air separation

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100227284A1 (en) * 2006-01-31 2010-09-09 Tenova S.P.A. Flat-flame vault burner with low polluting emissions
US8480394B2 (en) * 2006-01-31 2013-07-09 Tenova S.P.A. Flat-flame vault burner with low polluting emissions
US8128399B1 (en) * 2008-02-22 2012-03-06 Great Southern Flameless, Llc Method and apparatus for controlling gas flow patterns inside a heater chamber and equalizing radiant heat flux to a double fired coil
US8915731B2 (en) 2010-12-30 2014-12-23 L'air Liquide Societe Anonyme Pour L'etude Et L'exploitation Des Procedes Georges Claude Flameless combustion burner
US9285113B2 (en) 2010-12-30 2016-03-15 L'Air Liquide Société Anonyme Pour L'Étude Et L'Exploitation Des Procedes Georges Clause Distributed combustion process and burner
US20120214116A1 (en) * 2011-02-22 2012-08-23 Cameron Andrew M Apparatus and method for heating a blast furnace stove
US9863013B2 (en) * 2011-02-22 2018-01-09 Linde Aktiengesellschaft Apparatus and method for heating a blast furnace stove
US20140272736A1 (en) * 2013-03-15 2014-09-18 Fives North American Combustion, Inc. Low NOx Combustion Method and Apparatus
US9909755B2 (en) * 2013-03-15 2018-03-06 Fives North American Combustion, Inc. Low NOx combustion method and apparatus
WO2017129872A1 (fr) * 2016-01-28 2017-08-03 Lucas Jean Marie Gabriel Charles Procédé de réaction homogénéisée, telle qu'une combustion de gaz pauvre, et dispositifs le mettant en œuvre
FR3047299A1 (fr) * 2016-01-28 2017-08-04 Jean Marie Gabriel Charles Lucas Procede et dispositifs le mettant en oeuvre permettant de realiser une combustion partielle ou totale homogene

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CN101389905A (zh) 2009-03-18
WO2007081687A3 (en) 2008-01-10
EP1971803A4 (en) 2014-04-30
BRPI0706216B1 (pt) 2019-09-03
US20070154855A1 (en) 2007-07-05
BRPI0706216A2 (pt) 2011-03-22
TW200732599A (en) 2007-09-01
CA2633753A1 (en) 2007-07-19
JP2009522537A (ja) 2009-06-11
WO2007081687A2 (en) 2007-07-19
TWI416050B (zh) 2013-11-21
KR101477519B1 (ko) 2014-12-30
CN101389905B (zh) 2013-01-30
EP1971803A2 (en) 2008-09-24
JP5074421B2 (ja) 2012-11-14

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