Taiyo Nippon Sanso Corporation

C.uyemura Co., Ltd.

Yasuyuki Yamamoto

Yoshiyuki Hagihara

Kimio Iino

Naoki Seino

Masashi Yamaguchi

Takayuki Fujimoto

Tomoyuki Haneji

Takeshi Saito

Fujio Matsui

Shinichi Miyake

Toyoyuki Sato

Takayuki Matsumura

Masayuki Nagahori

Hirotaka Kamikihara

Takashi Takeda

Takashi Kato

Kazuro Suzuki

The object of the present invention is to provide a high-temperature oxygen generation device and a high-temperature oxygen generation method which can efficiently supply preheated high-temperature oxygen gas regardless of pressure conditions from normal pressure to high pressure, without requiring upsizing or expansion of the equipment, and the present invention provides a high-temperature oxygen generation device () in which a high-temperature gas (G) and an oxygen gas (G) to be heated are mixed to generate a high-temperature oxygen gas (G), wherein the high-temperature oxygen generation device () includes a burner () which generates the high-temperature gas (G), and a preheating chamber () which is provided on the downstream side of the burner () and mixes the high-temperature gas (G) and the oxygen gas (G) to be heated, and the burner () includes a combustion chamber () which forms a flame by a fuel gas (G) and an oxygen gas (G) for combustion, a fuel flow path () which supplies the fuel gas (G) into the combustion chamber (), a first oxygen flow path () and a second oxygen flow path () which supply the oxygen gas (G) for combustion into the combustion chamber (), and a flow path () for oxygen to be heated which communicates with the preheating chamber (), and supplies the oxygen gas (G) to be heated toward the preheating chamber ().

High-temperature oxygen generation device and high-temperature oxygen generation method

One object of the present invention is to provide a burner for producing inorganic spheroidized particles which can efficiently melt and spheroidize even organic powder with a large particle size distribution. The present invention provides a burner for producing inorganic spheroidized particles, including; a raw material powder supply path configured to supply inorganic powder as raw material powder; a first fuel gas supply path (A) configured to supply a first fuel gas; and a first combustion-supporting gas supply path (A) configured to supply a first combustion-supporting gas; wherein the raw material powder supply path includes: a first supply path (A) configured to extend in an axial direction of the burner (); a first collision wall (D) configured to be located at the top of the first supply path (A); a plurality of second supply paths (B) configured to be branched from the top of the first supply path (A), and extend radially from the center of the burner (); one or more dispersion chambers (C) configured to be located at the top of the second supply path (B), and have a space in which the cross-sectional area is larger than the cross-sectional area in the second supply path (B); and one or more raw material ejection holes () configured to communicate with the dispersion chamber (C).

Burner for producing inorganic spheroidized particles, apparatus for producing inorganic spheroidized particles, and method for producing inorganic spheroidized particles

One object of the present invention is to provide a burner which makes it possible to prevent blockage and damage of the nozzle by the molten metal and the slag, and the present invention provides a burner including a combustion supporting gas supply passage which is configured to supply a combustion supporting gas toward a combustion supporting gas outlet provided at the center of the tip end side; a fuel supply passage which is configured to supply a fuel toward a fuel ejection outlet provided around the combustion supporting gas outlet; and a protective nozzle provided from a position surrounding a periphery of the fuel ejection outlet so as to project forward beyond the tip end surface at which the combustion supporting gas ejection outlet and the fuel ejection outlet are provided; wherein the combustion supporting gas supply passage includes a Laval nozzle, and a diameter-enlarged nozzle of which a diameter gradually increases from the tip end of the Laval nozzle toward the combustion supporting gas ejection outlet, and the protective nozzle has a shape which is gradually reduced in diameter forward from the tip end surface.

Burner, method for operating burner, and method for melting and refining cold iron source

The object of the present invention is to provide a burner which is capable of decreasing the amount of NOx emission and heating the object to be heated uniformly with excellent heat transfer efficiency when heating the object to be heated while oscillating the flame by self-induced oscillation, and a method for heating using a burner, and the present invention provides a burner including a center fluid ejection outlethaving a sectional fan shape in which an interval between a pair of side wallsandgradually expands toward a downstream side, a pair of openingsandprovided on side wallsof a fluid ejection flow pathon an upstream side of the central fluid ejection portand communicated by a communication pipe, a first peripheral fluid ejection outlet arranged around the center fluid ejection outlet, a second peripheral fluid ejection outlet is arranged at a position at which a distance between a center thereof and a center of the center fluid ejection outlet is larger than a distance between a center of the first peripheral fluid ejection outlet and the center of the center fluid ejection outlet, and in a direction orthogonal to an expanding direction of the center fluid ejection outlet, and a third peripheral fluid ejection outlet is arranged at a position at which a distance between a center thereof and the center of the center fluid ejection outlet is larger than the distance between the center of the second peripheral fluid ejection outlet and the center of the center fluid ejection outlet, and in the direction orthogonal to the expanding direction of the center fluid ejection outlet.

Burner and method for heating using burner

One object of the present invention is to provide a burner which can uniformly heat a wide area without decreasing the heat radiation even when the swing width of the flame self-oscillating is large, and the present invention provides a burner in which a main combustion fluid and a second combustion fluid are combusted by ejecting the main combustion fluid while self-oscillating from a central expanding ejection port () which expands towards a tip end and ejecting the second combustion fluid from a pair of side ejection ports (and) provided on both sides of the central expanding ejection port (), wherein a pair of the side ejection ports (and) are disposed symmetrically with respect to a central axis of the central expanding ejection port (), and the central expanding ejection port () and the side ejection ports (and) are provided such that an expanding angle &#x3b1; of the central expanding ejection port () and an angle &#x3b2; formed by the central axes of a pair of the side ejection ports (and) satisfy a relationship of &#x2212;5&#xb0;&#x2264;&#x3b2;&#x2264;&#x3b1;+15&#xb0;.

Burner

One object of the present invention is to improve efficiency at the time of operation of a melting and refining furnace of a cold iron source using an oxygen burner lance, and the present invention provides a melting and refining furnace comprising a through-hole provided through a furnace wall, one or more oxygen burner lances provided in the through-hole: and a thermometer which is configured to measure a temperature in the furnace, the oxygen burner lance has one or more openings communicating with the inside of the furnace, and the thermometer is provided in any one of the openings.

Melting and refining furnace for cold iron source and method of operating melting and refining furnace

The gas fuel burner of the present invention has: a first oxidation agent discharge port that is disposed in the center of a first circular face constituting a combustion chamber having a truncated cone shape that expands from the basal end toward the distal end of a burner body and that discharges a first oxidation agent in the direction that the center axis of the burner body extends; a gas fuel discharge port that is disposed on the outside of the first oxidation agent discharge port and that discharges gas fuel in a direction intersecting the direction that the center axis extends; and a second oxidation agent discharge port that is disposed on a side face of the combustion chamber and that discharges a second oxidation agent in a direction intersecting the direction that the center axis extends.

Gas fuel burner and method for heating with gas fuel burner

The present invention provides an exhaust gas treatment method and an exhaust gas treatment device which prevent the generation of NO, and treat a first exhaust gas and a second exhaust gas with a small amount of fuel, and the exhaust gas treatment method comprises a first combustion step which treats a first exhaust gas discharged from a carbonization furnace for carbonizing a fibrous substance in an inert atmosphere and a graphitization furnace for graphitizing a fibrous substance in an inert atmosphere and a second combustion step of treating a second exhaust gas discharged from a flameproofing furnace for flameproofing a fibrous substance in air atmosphere, wherein the first exhaust gas is combusted at an oxygen ratio of 0.8 or less in the first combustion step, and the second exhaust gas is combusted in the second combustion step using sensible heat and latent heat of a third exhaust gas discharged in the first combustion step.

Exhaust gas treatment method and exhaust gas treatment device

One object of the present invention is to provide an oxygen burner which is capable of forming a high-velocity-oxygen jet flow without a cooling structure, and efficiently dissolving an object to be heated, and the present invention provides an oxygen burner comprising a primary oxygen ejection port provided at a tip of the primary oxygen flow path, a plurality of fuel gas supply pipes provided so as to branch a tip end side of the fuel gas flow path, a fuel gas ejection port provided in each of the fuel gas supply pipes, and a secondary oxygen ejection port provided at a tip of the secondary oxygen flow path, the fuel gas ejecting ports are arranged so as to surround the primary oxygen ejection port, the secondary oxygen ejection port is arranged so as to surround the fuel gas ejection ports and the primary oxygen ejection port, and the fuel gas ejection ports are arranged on the same plane and protrude than a tip of the primary oxygen ejection port.

Oxygen burner and operation method for oxygen burner

An object of the present invention is to provide a combustion burner that is capable of efficiently performing heating of a raw material powder by improving the dispersibility of the raw material powder that is ejected from a raw material powder-ejecting port using a simple configuration, and a combustion burner in which raw material powder introduction pipes that introduce the raw material powder inside a raw material powder supply pathway are provided so that axes that extend from central axes of the raw material powder introduction pipes do not intersect a central axis of the burner main body, and so that angles &#x3b8; that are formed by central axes of the raw material powder introduction pipes and an outer surface of a second circular member are larger than 0&#xb0; and smaller than 90&#xb0;.

Raw material powder-heating method

Combustion burner, burner apparatus, and raw material powder-heating method

An object of the present invention is to provide a combustion burner which is capable of heating or melting a raw material powder efficiently by dispersing the raw material powder, and which is capable of improving a collection rate of the heated or melted raw material powder, the invention providing a combustion burner that forms flame including a dispersal member which is provided in the raw material powder outlet which spouts the raw material powder into the flame, includes first and second inclined surfaces, and which disperses the raw material powder by colliding with the raw material powder that is supplied to the raw material powder outlet.

Combustion burner

A burner combustion method is employed in which at least two burners () are disposed opposite each other in a furnace () so as to cause combustion, the method comprising: cyclically changing at least one of a flow rate of a fuel fluid and a flow rate of an oxidant fluid supplied to the respective burners () while cyclically changing a concentration of oxygen in the oxidant fluid thereby cyclically changing an oxygen ratio obtained by dividing a supply oxygen amount by a theoretically required oxygen amount, whereby, the burners () are made to cause combustion in a cyclical oscillation state, wherein with respect to the cyclical change in an oscillation state of the burners (), a phase difference is provided between a cyclical change in an oscillation state of at least one burner () and cyclical changes in oscillation states of other burners ().

Burner combustion method

The present invention provides a burner combustion method for supplying and combusting an oxidant stream and a fuel stream, wherein the oxidant stream is composed of a primary oxidant stream jetted from around the periphery of the fuel stream or from a position near the fuel stream, and a plurality of secondary oxidant streams, and by periodically changing the flow rate of at least one of the primary oxidant stream and the plurality of secondary oxidant streams, and also causing a periodic change in the oxygen concentration within the oxidant stream, causing a periodic change in the oxygen ratio which is calculated by dividing the supplied amount of oxygen, supplied by the oxidant stream, by the theoretically required amount of oxygen, and providing a difference between the periodic changes in the oxygen concentration and the oxygen ratio, the combustion state adopts a periodic oscillating state.

The object of the present invention is to provide a method for burning a burner which has NOx reduction effects and has practical value, and a device therefore; the present invention provide A method for burning a burner in a heating furnace including a step of: periodically changing at least one of a flow rate of a fuel fluid and a flow rate of an oxidizing agent fluid which are supplied to the burner while periodically changing an oxygen concentration in the oxidizing agent fluid, thereby an oxygen ratio which is calculated by dividing an amount of oxygen supplied by a theoretical necessary amount of oxygen is periodically changed, and the periodical change of the oxygen ratio is made different from the periodical change of the oxygen concentration to cause combustion in periodically vibrational conditions.

Growing community of inventors

Hokuto, Japan

Yasuyuki Yamamoto