Abstract: Provided herein is a system for semi-automatic and/or automatic weed removal a system for automatic detection of weeds including an optical sensor and a central server unit, with communication network, an open-loop and/or closed-loop control device and a weed removal device, wherein the optical sensor, the server unit and the open-loop and/or closed-loop control device are in data connection via the communication network, wherein image data of a weed is generated via the optical sensor and transmitted to the server unit, which analyses the transmitted image data such that the weed can be determined, and wherein, via the server unit, in the case of a clear determination of the weed, weed confirmation data is transmitted to the open-loop and/or closed-loop control device which, in response to the weed confirmation data, controls and/or regulates the weed-removal device so that the weed detected by the optical sensor can be removed.

Abstract: The present disclosure relates to a fuel supply device for gas turbines, and a fuel nozzle and gas turbine having the same. The fuel supply device of present disclosure is mounted to the fuel nozzle for a uniform flow of air introduced thereinto and for allowing uniform mixing with fuel. The present disclosure allows a uniform fuel-air mixture to be supplied to a combustion chamber. According to the present disclosure, it is possible to uniformly supply a fuel-air mixture to a combustion chamber by arranging a plurality of perforated plates in a fuel supply device for gas turbines, to suppress generation of nitrogen oxides, and to prevent flame from stagnating or flowing backward.

Abstract: The purpose is to produce inactivated coal in a short time while preventing spontaneous combustion. A coal inactivation processing apparatus for inactivating coal with an oxygen-containing process gas, wherein the coal inactivation processing apparatus comprises a kiln assembly (103) for passing coal (4) from the base-end side to the distal-end side therein, base-end-side process gas supply means (121-125) for supplying a process gas (13) to the base-end side of the interior of the kiln assembly (103), distal-end-side process gas supply means (131-135) for supplying a process gas (14) to the distal-end side of the interior of the kiln assembly (103), process gas oxygen concentration adjusting means (124a, 134a, 135, 136a) for adjusting the oxygen concentration of the process gases (13, 14) supplied into the kiln assembly (103), and a cooling device (160) for cooling the coal (4) inside the kiln assembly (103).

Abstract: A self contained support kit includes a utility envelope configured to be removably secured to an animal garment, such as a sweater or shirt, for the deployment of a diaper coupler to grip and hold a diaper in its intended animal protective position; the animal garment and the diaper being separate articles of clothing worn by an animal; one for substantially covering the fore section of the animal and one for substantially covering the hind section of the animal.

Abstract: The invention relates to a streamlined body for influencing the flow dynamics of a fluid, wherein the streamlined body at least partly corresponds to a rotationally symmetrical airfoil. A streamlined body of this kind can be used in a number of ways, for example as an impact member, as a flow regulator or as a heat exchanger. It also evens out and accelerates flows. It is used to particular advantage in a mixing and reaction chamber for burning fuels.

Abstract: Burner device (2) for an industrial furnace (1) comprising a channel (3) for fuel, a channel (4) for a first oxidant, an outlet (9) for flue gases, a control device (10) and a heat buffer (7), where the first oxidant and the flue gases alternatingly are led through the heat buffer (7). The invention is characterized in that a separate lancing device (6) is arranged to supply a second oxidant to the burner device (2).

Abstract: The present invention describes a novel reactor adapted for carrying out chemical reactions at temperatures of up to 1600° C., and at pressures of up to 100 bars. The reactor of the invention has two vessels surrounding the reaction zone, an inner vessel constituted by a refractory material and an outer vessel surrounding the inner vessel and constituted by an insulating material.

Abstract: A preparation of liquid fuel for combustion, particularly for ignition, in the burners of a gas turbine is proposed. A source of heated liquid fuel, particularly heated pressurized fuel, is arranged in a reservoir. The reservoir is arranged in parallel with a main fuel feed of a combustion system. The reservoir can be filled by the main fuel feed and/or evacuated into the main fuel feed. The reservoir contains a heating means, which heat the liquid fuel filled in the reservoir, particularly while circulating in the reservoir.

Abstract: The invention relates to a combustion method which is performed in a furnace that is equipped with energy recovery means and burners, whereby the heat from the combustion fumes is recovered by energy recovery means and said recovered heat is used in order to heat the air. According to the invention, at least part of the burners performs the combustion of an oxygen-rich comburent and a fuel and at least part of the air heated by the energy recovery means is used to heat the oxygen-rich comburent and/or fuel for the burners.

Abstract: The invention comprises a method and apparatus for burning combustible fluids, such as biofuel byproducts and feedstocks, which are difficult to burn in a stable and clean manner. The method includes preheating the combustion zone prior to initiating flow of the combustible fluid and maintaining a minimum oxygen concentration in the oxidant gas.

Abstract: The present invention provides a burner design and method for a high velocity oxygen fuel (HVOF) liquid fuel gun that generates turbulent atomization and uses one or more jets as an injection method for liquid fuel and oxygen to improve the combustion inside the combustion chamber. The burner uses preheated oxygen and preheated fuel to improve vaporization prior to combustion of the fuel.

Abstract: In one embodiment of a method for vaporizing liquids such as fuels, the liquid is sprayed into a chamber such that the spray does not impinge on any surface. The energy for vaporization is supplied through the injection of a hot diluent such as nitrogen or oxygen depleted air. Additional heat is added through the surface. In another embodiment, the liquid is sprayed onto a hot surface using a geometry such that the entire spray is intercepted by the surface. Heat is added through the surface to maintain an internal surface temperature above the boiling point of the least volatile component of the liquid. The liquid droplets impinging on the surface are thus flash vaporized. A carrier gas may also be flowed through the vaporizer to control the dew point of the resultant vapor phase mixture.

Abstract: A system includes a turbomachine including a first chamber configured to contain a first fluid and a second chamber configured to contain a second fluid. The turbomachine also includes a barrier disposed between the first and second chambers. The barrier is configured to separate the first fluid and the second fluid. Additionally, the barrier includes a first surface facing the first chamber and a second surface facing the second chamber. The turbomachine also includes an orifice extending from the first chamber to the second chamber. The orifice defines a fluid passageway. Additionally, the turbomachine includes a tube including a first end and a second end. The first end is coupled to the first surface and is disposed about a perimeter of the orifice. The tube is configured to at least partially contain the second fluid.

Abstract: The present disclosure is directed to an oil burning system, capable of burning various waste oils and other fuel oils, with high efficiency burn, reduced emissions, and without producing sludge within the system. Generally, the system operates by pressurizing liquid fuel to a ultra-high pressure and delivering the fuel through a two-stage filtration system, pre-heating the fuel, dispensing the fuel through a nozzle and igniting the fuel.

Abstract: An off-gas flare system for disposing of a waste gas stream containing BTEX and VOC contaminants, and for safely handling slugs of excess liquids entrained in the waste gas stream. The flare system includes a flare stack, an enclosed steam tank disposed within the flare stack for receiving the waste gas stream and vaporizing any liquids in the waste gas stream into vapors, and an enclosed liquid tank disposed below the steam tank and in fluid communication with the steam tank for receiving the heated waste gas and liquid vapors and for temporarily containing any excess non-vaporized liquids. The flare also includes a waste gas burner disposed in the flare stack adjacent the steam tank and in fluid communication with the liquid tank, and a continuous means for igniting the waste gas burner.

Abstract: A more complete combustion and a decrease in particulate emissions in the burning of a heavy fuel oil in an industrial boiler or similar combustion device is obtained by first heating the oil to a temperature sufficient to significantly lower its viscosity and continuously mixing a fuel additive containing a solution of a high molecular weight, substantially linear, viscoelastic polymer to the heated oil flowing to the combustion device by mechanically stirring the oil and additive at conditions that do not cause degradation of the viscoelastic polymer through rupture and breakage of polymer molecules.

Abstract: An accessory heat exchanger unit for heating the fuel oil used by the frac oil heater system of the invention prior to combustion. The accessory heat exchanger unit receives and distributes the fuel oil through a plurality of heat exchanger tubes prior to directing the oil to the combustion chamber. The unit also includes an inlet for receiving heated treatment fluid from the frac water heater system of the present invention. The heated treatment fluid passes over the plurality of heat exchanger tubes of the accessory heat exchanger unit prior to being directed to the outlet of the accessory heat exchanger unit. By heating the fuel oil prior to combustion, the accessory heat exchanger unit greatly improves the viscosity and flow rate of the fuel oil, thereby allowing cheaper, less cold-tolerant grades of fuel oil to be used in extreme cold climates with no degradation in the operation of the frac water heater system of the present invention.

Abstract: The present invention provides fuel saving systems. Fuel consumption can be reduced by 5% to 40% or more by pre-combustion heating the fuels. The heat exhaust of a combustion chamber can be used to heat a heat transfer fluid, which exchanges heat with the incoming fuel stream.

Abstract: An apparatus, a system and a method by which fuel gas to drive a heat source is heated are provided. The apparatus includes a first gas passage by which at least a portion of the fuel gas is transported from an inlet to an outlet, the outlet being fluidly coupled to the heat source, a plurality of heat pipes in thermal communication, at respective first ends thereof, with the portion of the fuel gas transported by the first gas passage, and a heating element, fluidly coupled to the heat source to receive exhaust of the heat source, through which respective second ends of the heat pipes extend to be in position to be heated by the exhaust.

Abstract: A heat recycling system for a high-temperature exhaust gas contains a body having a combustion space, at least one burning device, and a storing device; characterized in that: the combustion space is connected with an exhaust pipe; the burning device is coupled with a heat recycling blower and a gas control valve; the storing device is secured on a distal end of the exhaust pipe and is comprised of a second control valve, a first store tank, and a second store tank; the second control valve is disposed on the exhaust pipe of the body and includes two output ends which connect with a gas guiding tube and a second guiding tube respectively; the first store tank is coupled with the gas guiding tube and is connected with a first check valve and a second check valve, the gas check valve is coupled with a first gas-exhausting blower.

Abstract: A combustion air supply apparatus 9 of alternating heat exchange type supplies combustion air and discharges combustion exhaust gas at a flow velocity of 80 to 200 m/sec. A burner assembly 4 is configured in such a manner that low-caloric fuel gas is pre-heated with heat of pre-combusting high-caloric fuel gas before the low-caloric fuel gas reaches a mixing starting space CA in the combustion chamber where the pre-combusting high-caloric fuel gas and the low-caloric fuel gas come to burn together in a full scale in the mixing starting space CA. When an air amount of the combustion air supplied through the high-temperature air supply ports of the plurality of fuel gas combustion apparatuses is defined as Q1 and an air amount of the pre-combustion air to be mixed with the high-caloric fuel gas, supplied from the fuel gas combustion apparatuses, is defined as Q2, a total air amount (Q1+Q2) is 1.02 to 1.10 times more than a theoretical air amount QS required for combustion, and a ratio of Q2/(Q1+Q2) is 0.

Abstract: The present invention provides fuel saving systems. Fuel consumption can be reduced by 5% to 40% or more by pre-combustion heating the fuels. The heat exhaust of a combustion chamber can be used to heat a heat transfer fluid, which exchanges heat with the incoming fuel stream.

Abstract: A system and techniques for waste oil combustion are provided. The techniques include straining waste oil, separating contaminants from the strained waste oil to produce segregated layers of waste oil, selectively drawing a segregated layer of the waste oil, entraining the drawn waste oil to a burner for combustion, and regulating flow rate to produce a controllable amount of heat output. The system includes a container for straining waste oil, a storage drum for separating contaminants from the strained waste oil via gravity separation to produce segregated waste oil, an oil uptake channel for entraining the waste oil from the storage drum, a fuel regulator for controlling rate of flow of the waste oil from the storage drum to a burner head via the oil uptake channel, and a burner head control for repositioning a burner head under the input stream to produce a controllable amount of heat output.

Abstract: The invention provides an apparatus for processing material such as organically coated waste and organic materials including biomass, industrial waste, municipal solid waste and sludge, comprising a processing chamber (2) for processing said material at an elevated temperature to produce syngas and a combustion chamber (4) having at least one burner therein for combusting syngas released by processing of said material. A conduit means (18) is provided between said combustion chamber and said processing chamber for carrying hot exhaust gasses from the combustion chamber (4) to said processing chamber (2) and at last one mirror (24) is arranged to reflect and concentrate sunlight thereby to cause the temperature within said processing chamber (2) to be raised. The apparatus also includes a syngas reservoir (66). A storage conduit (62) is provided for carrying syngas into said syngas reservoir (66) and a syngas feed line (68) is provided for feeding syngas from said reservoir to said combustion chamber (4).

Abstract: A fuel oil supply system for a portable fuel oil consuming device, representatively a portable oil fired construction heater includes supply and return fuel lines in communication with a remote fuel container in an anti-siphon configuration. One or more electrical heaters heat the fuel lines adjacent an integral pump of the consuming device. The fuel lines communicate with a partitioned volume of fuel within the container which is heated relative to a remaining volume as the fuel circulates. The pump and a combustion air blower of the device are located together with the heaters within an enclosure on the device such that air is drawn into the enclosure over the heaters and heat conducting surfaces of the pump by the blower for directing heated air through a combustion air duct of the blower which surrounds the burner and a main fuel line from the pump to the burner.

Abstract: A combustor for oxidizing a combustion fuel and pre-heating one or more reactants for fuel reforming. The combustor includes an elongated housing having an inlet for receiving a combustion fuel and an outlet for exhausting combustion products. The elongated housing further includes a cylindrical side wall, a bottom wall, and a top wall. Inert particles are disposed within the housing adjacent the inlet. A combustion catalyst bed is disposed within the housing above the inert particles that is a mixture of inert particles and combustion catalyst. The inert particles and the combustion catalyst preferably have a volumetric ratio of inert particles to catalyst between about 2:1 and about 4:1. The combustor has at least one heat exchanger within the combustion catalyst bed for heating a reformer reactant and generating steam. Preferably, the combustor includes at least two heat exchangers within the combustion catalyst bed, the heat exchanging elements have different surface areas.

Abstract: The present invention relates to a heating device for exhaust gas in an internal-combustion engine, which is driven by using LPG, LNG, a volatile oil, a light oil, biodiesel or oxygenated hydrocarbon being DME, the device consisting of a catalyst reactor reformer, an exhaust gas suction section and the second fuel supply device. The exhaust gas suction section is mounted for using oxygen included in the exhaust gas. When the heating device is driven, air and fuels are supplied to the catalyst reactor and the second fuel supply device via a single tube when the heating device is heated. The present invention provides with a heating device for exhaust gas capable of securing the durability of a heating device for exhaust gas and minimizing the amount of air supplied from the outside to the combustion reforming device by excluding carbon depositions in a tube due to a prolysis of LPG, LNG, a volatile oil, a light oil, biodiesel or oxygenated hydrocarbon being DME, and a method for driving the device.

Abstract: A stream of hot oxygen is formed by providing a duct and a fuel lance movable axially within the duct, flowing gaseous fuel out of the lance into the duct, mixing it in the duct with gaseous oxidant, flowing the mixture out of the duct into an atmosphere which is hot enough that it ignites the mixture without aid of an ignition source other than said atmosphere, and combusting said mixture in a flame that does not extend into said duct; then moving the lance so its fuel outlet approaches the duct exit orifice so that the base of said flame moves inside said duct to the fuel outlet; and then moving the lance to draw the fuel outlet and the flame attached thereto away from the exit orifice into the duct; and increasing the flow rate of gaseous oxidant in said duct, so that combustion of fuel within the duct heats uncombusted oxygen which emerges as a stream of hot oxidant.

Abstract: This invention describes a new device for controlling the radial profile of the temperature of a confined gas stream that is designed to be used as a coolant in an exchanger that is located downstream from said device.

Abstract: Systems and methods for producing hydrogen gas with a fuel processing system that includes a hydrogen-producing region that produces hydrogen gas from a feed stream and a heating assembly that consumes a fuel stream to produce a heated exhaust stream for heating the hydrogen-producing region. In some embodiments, the heating assembly heats the hydrogen-producing region to at least a minimum hydrogen-producing temperature. In some embodiments, the rate at which an air stream is delivered to the heating assembly is controlled to selectively increase or decrease the temperature of the heated exhaust stream. In some embodiments, the feed stream and the fuel stream both contain a carbon-containing feedstock and at least 25 wt % water. In some embodiments, the feed and fuel streams have the same composition.

Abstract: An apparatus and method for extracting and recovering water-soluble gas and waste heat from an oven is provided. The method employs a gas-gas heat exchanger for cooling hot stack gas from the oven to a temperature higher than the dew point of the hot stack gas, a double-film-wise heat exchanger for receiving the cooled stack gas from the gas-gas heat exchanger, a condenser/heat exchanger for receiving and further cooling the stack gas from the double-film-wise heat exchanger to ambient temperature by heating a utility water stream, which can then be used for hot water and steam process services, and an ethanol recovery unit for receiving the cooled stack gas from the condenser/heat exchanger.

Abstract: A formed sheet heat exchanger is provided for exchanging heat between fluids is provided. The apparatus includes flow divider sheets that are positioned in a stacked configuration and extend in a longitudinal direction so that adjacent pairs of the sheets define flow passages therebetween for receiving first and second fluids. Each of the sheets is nonuniform in the longitudinal direction, having a manifold portion and a corrugated portion. The corrugated portions of each adjacent pair of sheets define a plurality of fluid channels therebetween that are connected to the portion of the flow passage defined between the manifold portions. The fluid channels are configured to receive the first or second fluids and transfer thermal energy therebetween through the flow divider sheets.

Abstract: A method and apparatus for producing radiant heat in which a mixture of fuel and primary combustion oxidant is introduced into a combustion chamber having a heat radiating wall, which mixture has less than a stoichiometric requirement for complete combustion of the fuel, and igniting the mixture, forming heated partial combustion products. At least a portion of the heat in the heated partial combustion products is transferred to the heat radiating wall. The heated partial combustion products are passed from the combustion chamber into an exhaust gas plenum disposed adjacent to the combustion chamber. A secondary combustion oxidant is introduced into the exhaust gas plenum in an amount sufficient to complete combustion of the partial combustion products, forming exhaust gases. Heat in the exhaust gases is transferred to the primary combustion oxidant disposed in a combustion oxidant plenum disposed adjacent to said exhaust gas plenum.

Abstract: A combustion device in the form of a paraffin stove (10) comprises a fuel reservoir (12), a burner (14), stand pipe (16) which extends between the reservoir (12) and the burner (14) and a stove top (18). The reservoir (12) comprises a rigid, air-tight outer container (22) and a deformable bladder (25) for holding paraffin (27) which is located within the container (22). The bladder has an outlet (44) which is connected to the stand pipe (16). A conduit (51) which can be connected to a source of compressed air is connected to the container (22) for pressurizing the container (22) to exert a force on the bladder (25) sufficient to cause the paraffin to be delivered to the burner (14) where it is ignited to produce a flame.

Abstract: A heat accumulating-type burner that operates by alternately repeating heat accumulation and combustion where the heat accumulating element is heated by exhaust gas to accumulate heat therein, and combustion air is passed through the heat accumulating portion to preheat the combustion air by thermal exchange with the heat accumulating element that holds the heat accumulated therein, and the preheated combustion air is used to carry out combustion. The cross-sectional area of the heat accumulating portion at the furnace-inner side is made to be smaller than the cross-sectional area of the heat accumulating portion at the air supply/discharge port side, and in addition, the thickness of the fireproof heat insulating member that covers the heat accumulating portion is made to be thick at the furnace-inner side of the heat accumulating portion, and is made to be thin at the air supply/discharge port side of the heat accumulating portion.

Abstract: Provided is a combustion apparatus (10) for combusting one or more combustible media such as mine methane and waste coal. The apparatus has a combustion unit (24) with a fuel inlet (26,27) through which the combustible media enters the combustion unit for combustion therein, and a gas outlet (28) for gases formed during combustion to flow out of the combustion unit to provide heat energy to a downstream apparatus such as a turbine engine(14).

Abstract: A flare stack that preferably comprises a burner assembly, an exhaust stack, an housing, and a fuel line. The burner assembly burns a fuel to generate thermal energy and combustion byproducts. The exhaust stack is cooperatively associated with the burner assembly to direct the thermal energy and combustion byproducts away from the burner assembly. The housing at least partially defines a fluid-receiving chamber in thermal communication with the exhaust stack. The fluid-receiving chamber has a heat-transfer fluid disposed therein. The fuel line is in fluid communication with the burner assembly to deliver fuel to the burner assembly. At least a portion of the fuel line is in thermal communication with at least one of the exhaust stack, housing, or heat-transfer fluid to permit fuel in the fuel line to absorb thermal energy before reaching the burner assembly.

Abstract: A method and system of heating combustion air before the combustion air is received by a hot water or steam boiler. A solar panel oriented to receive radiant energy from the sun is used to heat a fluid. A circulating pump moves the hot fluid through a closed loop to a preheat exchanger that is located in the combustion air stream of the hot water or steam boiler. When the combustion air blower of the hot water or steam boiler is on, heat from the heated circulating fluid in the preheat exchanger is transferred to combustion air going through the preheat exchanger to the combustion air blower of the boiler and to the boiler.

Abstract: A flamer may be used to sterilize poultry litter, soil, concrete, etc. The stationary or mobile flamer disclosed comprises a hood to contain the heat, an external frame, and burners. A fuel tank may be carried on the flamer or on a tractor. An additional embodiment provides for mounting the flamer on wheels, permitting the unit to be towed by a truck, four-wheeler, tractor, etc. The burners are adjustable as to angle, and fueling rate. A pressure in the fuel system is controlled by selectively switching between the liquid and vaporous components of the fuel. By limiting how low the pressure may fall, the flow of fuel from the tank to the torches is more consistent.

Abstract: The invention relates generally to a fuel burner, and more particularly, but without limitation, to a high-efficiency gas burner with a gas pre-heat feature. Embodiments of the invention include a preheat tube that is coupled inline between a pressurized gas source and an orifice. The preheat tube may be formed into an elongated loop. An air/gas mixing tube extends inside the loop formed by the preheat tube from a proximal end near the orifice to a distal end away from the orifice. The distal end of the air/gas mixing tube is exposed to a portion of the preheat tube.

Abstract: A more complete combustion and a decrease in particulate emissions in the burning of a heavy fuel oil in an industrial boiler or similar combustion device is obtained by first heating the oil to a temperature sufficient to significantly lower its viscosity and continuously mixing a fuel additive containing a solution of a high molecular weight, substantially linear, viscoelastic polymer to the heated oil flowing to the combustion device by mechanically stirring the oil and additive at conditions that do not cause degradation of the viscoelastic polymer through rupture and breakage of polymer molecules.

Abstract: A single-ended, internally recuperated, radiant tube annulus system in which at least part of the heat recovery takes place within the furnace to which the system is attached and in which the oxidant and/or fuel are preheated not only by heat transfer from the exhaust gases, but also directly from the combustion process. The system includes a plurality of concentric radiant tubular members arranged in a manner providing an outer annular region in which the combustion process is carried out, an inner tubular member through which exhaust gases are exhausted from the system, and intermediate annular regions between the inner tubular member and the outer annular region through which preheated oxidant is provided to the outer annular region for the combustion process. In accordance with one embodiment of this invention, the internal recuperator is used as a fuel reformer.

Abstract: The present invention provides fuel saving systems. Fuel consumption can be reduced by 5% to 40% or more by pre-combustion heating the fuels. The heat exhaust of a combustion chamber can be used to heat a heat transfer fluid, which exchanges heat with the incoming fuel stream.

Abstract: A gas torch assembly and its method of use are described for use in high-temperature applications such as a furnace, power generation station, pottery kiln and flame cutting and welding torches, which requires only inexpensive, low environmental impact, low pressure fuels such as propane gas and air; utilizes the initial internal combustion of the fuel gas to subsequently preheat air/oxygen and/or the fuel gas to well above ambient temperature; and dispenses with the need of arc-oxygen or arc-air cutting of metals.

Abstract: Attemperation systems and methods for cooling steam bypassed from a steam turbine during tripping of the steam turbine are provided in the disclosed embodiments. The systems may be configured to deliver water discharged from a fuel gas heater to a bypass attemperator, where the water discharged from the fuel gas heater may be used to cool the bypass steam. Before being used by the fuel gas heater, the water used to heat the fuel gas may be heated by an economizer. The water may be delivered to the economizer by an intermediate pressure stage of a boiler feedwater pump. In the disclosed embodiments, the intermediate pressure stage of the boiler feedwater pump may also be used to supply water to a re-heater attemperator, which may be used to further cool the steam after it has been delivered from the bypass attemperator to a re-heater. In addition, the intermediate pressure stage of the boiler feedwater pump may deliver water directly to the bypass attemperator as a supplemental water source.

Abstract: A stream of hot oxygen is formed by providing a duct and a fuel lance movable axially within the duct, flowing gaseous fuel out of the lance into the duct, mixing it in the duct with gaseous oxidant, flowing the mixture out of the duct into an atmosphere which is hot enough that it ignites the mixture without aid of an ignition source other than said atmosphere, and combusting said mixture in a flame that does not extend into said duct; then moving the lance so its fuel outlet approaches the duct exit orifice so that the base of said flame moves inside said duct to the fuel outlet; and then moving the lance to draw the fuel outlet and the flame attached thereto away from the exit orifice into the duct; and increasing the flow rate of gaseous oxidant in said duct, so that combustion of fuel within the duct heats uncombusted oxygen which emerges as a stream of hot oxidant.

Abstract: Disclosure is made of methods, systems, and apparatus for changing characteristics of noise of premixed flames supported on burners by heating burner passageways by an amount that attenuates combustion noises arising from premixed flames.

Abstract: Disclosure is made of methods, systems, and apparatus for changing characteristics of noise of premixed flames supported on burners by heating burner passageways by an amount that attenuates combustion noises arising from premixed flames.

Abstract: Burner device (2) for an industrial furnace (1) comprising a channel (3) for fuel, a channel (4) for a first oxidant, an outlet (9) for flue gases, a control device (10) and a heat buffer (7), where the first oxidant and the flue gases alternatingly are led through the heat buffer (7). The invention is characterised in that a separate lancing device (6) is arranged to supply a second oxidant to the burner device (2).

Abstract: A heat accumulating-type burner that operates by alternately repeating heat accumulation and combustion where the heat accumulating element is heated by exhaust gas to accumulate heat therein, and combustion air is passed through the heat accumulating portion to preheat the combustion air by thermal exchange with the heat accumulating element that holds the heat accumulated therein, and the preheated combustion air is used to carry out, combustion. The cross-sectional area of the heat accumulating portion at the furnace-inner side is made to be smaller than the cross-sectional area of the heat accumulating portion at the air supply/discharge port side, and in addition, the thickness of the fireproof heat insulating member that covers the heat accumulating portion is made to be thick at the furnace-inner side of the heat accumulating portion, and is made to be thin at the air supply/discharge port side of the heat accumulating portion.