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7621154 |
Solid fuel combustion for industrial melting with a slagging combustor
A method for supplying heat to a melting furnace for forming a molten product using ash-containing fuels. A fuel having an ash component is introduced into a slagging chamber of a slagging...
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7618530 |
Heavy oil hydroconversion process
A method for the efficient conversion of heavy oil to distillates using sequential hydrocracking in the presence of both supported and colloidal catalyst immediately followed by a high...
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7618255 |
Apparatus and method for catalytic combustion
A catalytic combustion apparatus is equipped with a reactor for catalytically burning a gas to be treated containing a combustible organic compound, which further comprises a condensate forming...
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7594811 |
Method pertaining to combustion, and a burner
A method and apparatus relating to the combustion of a fuel with an oxidant in a heating furnace, wherein the fuel and the oxidant are delivered to a burner head. In a first method step fuel and...
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7581948 |
Burner apparatus and methods for making inorganic fibers
Inorganic fiber production burner apparatus and methods of use are disclosed. One burner includes a refractory block adapted to be in fluid connection with sources of primary oxidant and fuel, the...
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7578962 |
Method and apparatus for melting metal
An apparatus for melting a metal load includes a furnace having a melting chamber with a hearth and a molten metal outlet. The apparatus further includes non-regenerative burners that are operative...
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7549858 |
Combustion with variable oxidant low NOx burner
Heating provided by a burner that combusts hydrocarbon fuel can be provided at a sequence of different heat transfer rates by adjusting the total oxygen concentration of oxidant streams fed to the...
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7524186 |
Low emissions burner with premix flame stabilized by a diffusion flame
A low emissions burner includes a diffusion burner surrounded by an annular array of premix burners. The diffusion burner operates at maximum swirl air flow and at a low constant fuel rate to...
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7517372 |
Integrated fuel processor subsystem with quasi-autothermal reforming
The present invention includes an integrated fuel processor subsystem incorporating a thermal combustor, a catalytic combustor, a quasi-autothermal reactor (QATR) and a air-fuel-steam (AFS) mixer...
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7504026 |
Ultrasonic solution separation apparatus
The ultrasonic solution separation apparatus oscillates an undiluted solution containing a target material at an ultrasonic frequency to produce mist, and collects the mist to collect a target...
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7497682 |
Method of operating furnace to reduce emissions
Emissions of NOx and CO are reduced from combustion devices such as coal-fired furnaces by increasing the stoichiometric ratio of burner(s) having a lower average temperature and increasing the...
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7491055 |
Oxy-fuel reburn: a method for NOx reduction by fuel reburning with oxygen
A method is disclosed for reducing the NO x emission of fossil fuel burners. The method creates fuel-rich and fuel-lean zones within the boiler to enhance the removal of NO x species by creating...
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7484956 |
Low NOx combustion using cogenerated oxygen and nitrogen streams
Combustion of hydrocarbon fuel is achieved with less formation of NOx by feeding the fuel into a slightly oxygen-enriched atmosphere, and separating air into oxygen-rich and nitrogen-rich streams...
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7484955 |
Method for controlling air distribution in a cyclone furnace
Methods for cyclone boiler flame diagnostics and control, including methods for monitoring the operating state of a cyclone furnace using linear and nonlinear signal analysis techniques, including...
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7481650 |
Direct gas-fired burner assembly with two-stage combustion
A direct gas-fired burner assembly is disclosed in which a two-stage flame is produced. A gas manifold is attached to two baffles with apertures disposed therein. The apertures are designed such...
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7467943 |
Method for combusting fuel in a fired heater
A method for combusting fuel in a fired heater having one or more burners, the method. comprising: (a) combusting at least a portion of the fuel in the. presence of an oxidizer in the burners,....
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7467942 |
Device and method for flame stabilization in a burner
A device and a method for flame stabilization in a burner ( 10 ), includes a burner housing at least partially enclosing a burner volume, into which may be introduced via at least one fuel line,...
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7430970 |
Burner with center air jet
A new burner apparatus and method of combusting fossils fuels for commercial and industrial application is provided wherein the new burner apparatus achieves low NO x emissions by supplying oxygen...
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7390189 |
Burner and method for combusting fuels
A burner includes separate fuel and oxidant conduits. The fuel conduit has inlet, transitional, and outlet sections, and the oxidant conduit has inlet and outlet sections. The cross sectional flow...
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7363867 |
Method and apparatus for adding reducing agent to secondary overfire air stream
A combustion boiler for burning fuel and producing heat to generate steam. A method of minimizing discharging of nitrogen oxides from a combustion boiler comprising the steps of spraying a reducing...
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7335015 |
Method for controlling or regulating a burner
Method for controlling or regulating a burner ( 5 ) to which a defined air quantity ( 3 ) and fuel quantity ( 4 ) are fed, the exhaust gas ( 6 ) formed during the combustion being fed to a sensor (...
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7303388 |
Staged combustion system with ignition-assisted fuel lances
Combustion system comprising a furnace having a thermal load and a combustion atmosphere disposed therein; one or more fuel lances adapted to inject fuel into the combustion atmosphere; and one or...
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7264466 |
Method and apparatus for radiant tube combustion
A method and apparatus provide combustion in a radiant tube in first, second and third stages, with flue gas recirculation that begins at the second stage.
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7249946 |
Thermal generator and combustion method for limiting nitrogen oxides emissions by re-combustion of fumes
The invention relates to a thermal generator comprising a furnace tube ( 2 ) wherein a fuel is burnt, recombustion means ( 14, 15 ) for reducing the nitrogen oxides content present in said fumes...
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7241134 |
Enhancing combustion with variable composition process gas
Method and apparatus for enhancing the combustion of a process gas of variable composition which gas is used for steam generation in producing heavy oil. The mass flow of the process gas containing...
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7229483 |
Generation of an ultra-superheated steam composition and gasification therewith
A method for gasifying carbonaceous materials to fuel gases comprises the formation of an ultra-superheated steam (USS) composition substantially containing water vapor, carbon dioxide and highly...
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7175423 |
Air staged low-NOx burner
An apparatus and method for using staged air combustion. The apparatus includes a burner body ( 10 ) secured to a port block ( 42 ), and a fuel passageway ( 12 ) extending through the burner body (...
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7168947 |
Methods and systems for operating combustion systems
Methods and systems for reducing nitrogen oxides in combustion flue gas is provided. The method includes combusting a fuel in a main combustion zone such that a flow of combustion flue gas is...
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7163392 |
Three stage low NOx burner and method
The present invention is an air-staged low NO x burner for firing a gaseous fuel. The burner fires three stages, with the first stage of combustion taking place substantially within a burner cup...
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7074034 |
Burner and process for combustion of a gas capable of reacting to form solid products
This invention is a directed to combustion apparatus incorporating a combustion chamber, a precombustion chamber and a multi-wall burner and a process for effecting combustion of gases,...
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7014458 |
High velocity injection of enriched oxygen gas having low amount of oxygen enrichment
Methods and apparatus for combustion of a hydrocarbon fuel in a combustion chamber of a furnace or boiler are presented, the combustion normally using only air as an oxidant, part of the air...
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6957955 |
Oxygen enhanced low NOx combustion
Fuel such as coal is combusted by feeding fuel and gaseous oxidant containing more than 21 vol. % oxygen, and preferably 21.8 to 29 vol. % oxygen, to a combustion stage at a stoichiometric ratio...
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6951454 |
Dual fuel burner for a shortened flame and reduced pollutant emissions
A dual fuel burner including an elongated supply pipe and a gas injector for a boiler furnace having a plurality of peripheral openings around a center opening. The peripheral openings are pitched...
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6939125 |
Method for reducing nitrogen oxides in combustion gas from combustion furnace
A method for reducing NO x , in a combustion gas which is discharged from a combustion furnace for burning a fuel by means of a gas containing oxygen in an amount of at least 80 vol % and which...
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6910879 |
Combustion method comprising separate injections of fuel and oxidant and burner assembly therefor
A method of combustion and a burner assembly wherein at least one fuel and at least one oxidizer are injected separately. The oxidizer comprises a primary oxidizer stream and a secondary oxidizer...
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6910878 |
Oxy-fuel fired process heaters
Process heaters operated with a burner that uses high-oxygen oxidant gas instead of air and that recirculates and entrains combustion gases, wherein oxidant gas is injected at an angle to the fuel...
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6890498 |
Burner and method for partly oxidising a gas stream comprising hydrogen sulphide and ammonia
A gas burner for use with a Claus furnace made up of at least five concentric tubes and the spaces formed between them. The diameters of the tubes increase radially outward so that the first tube...
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6880549 |
Combustion system for a heater
A combustion system for a portable forced air heater having two frusta-conical sections attached to a circular burner tube, wherein each frusta-conical section has pre-determined vent hole patterns...
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6872070 |
U-tube diffusion flame burner assembly having unique flame stabilization
A U-tube diffusion flame burner assembly having improved flame stabilization with no undesirable acoustic effects. The burners are axial units comprised of flame holders and combustors. The flame...
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6866503 |
Slotted injection nozzle and low NOx burner assembly
A nozzle comprising a nozzle body having an inlet face, an outlet face, and an inlet flow axis passing through the inlet and outlet faces, and two or more slots extending through the nozzle body...
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6799526 |
Methods of improving productivity of black liquor recovery boilers
Methods of increasing the throughput of recovery boilers equipped with at least three levels of injection of air with oxygen enrichment of the air in at least one air level. In one method, a black...
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6793486 |
Burner for non-symmetrical combustion and method
A burner for non-symmetrical combustion generally includes a burner housing enclosing a burner plenum. A fuel conduit extends within the housing and is positioned coaxial with a line spaced from a...
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6790031 |
Fuel staging methods for low NOx tangential fired boiler operation
A tangential fired boiler has a circumferential wall defining a combustion zone and a plurality of fuel inlets disposed along the circumferential wall. The plurality of fuel inlets inject fuel at...
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6783357 |
Preheated fuel and oxidant combustion burner
A burner apparatus comprises a conduit adapted to convey preheated oxidant and having outlet and inlet ends, and a conduit adapted to convey preheated fuel and having outlet and inlet ends. The...
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6705117 |
Method of heating a glass melting furnace using a roof mounted, staged combustion oxygen-fuel burner
In an industrial glass furnace, which optionally contains recuperators, regenerators, electric boost or other devices for providing heat to glass batch material, at least one staged combustion...
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6702569 |
Enhancing SNCR-aided combustion with oxygen addition
NOx emissions from combustion are reduced, NOx reduction efficiency by SNCR is improved, and other efficiencies are realized, by injecting oxygen into a fuel-rich combustion zone under controlled...
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6699031 |
NOx reduction in combustion with concentrated coal streams and oxygen injection
NOx formation in the combustion of solid hydrocarbonaceous fuel such as coal is reduced by obtaining, from the incoming feed stream of fuel solids and air, a stream having a ratio of fuel solids to...
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6699030 |
Combustion in a multiburner furnace with selective flow of oxygen
Improved operational characteristics such as improved fuel efficiency, reduction of NOx formation, reduction of the amount of unburned carbon in the ash, and lessened tendency to corrosion at the...
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6699029 |
Oxygen enhanced switching to combustion of lower rank fuels
A furnace that combusts fuel, such as coal, of a given minimum energy content to obtain a stated minimum amount of energy per unit of time is enabled to combust fuel having a lower energy content,...
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6685463 |
Air and fuel staged burner
A burner ( 10 ) for reducing NO x emissions where supply fuel ( 16 ) and supply air ( 20 ) are supplied to a combustion tunnel ( 52 ) at high and low velocities and secondary air ( 26 ) is...
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