Emissions of NO.sub.X and/or CO are reduced at the stack by systems and methods wherein a primary fuel is thoroughly mixed with a specific range of excess combustion air. The primary fuel-air mixture is then discharged and anchored within a combustion chamber of a burner. Further, the systems and methods provide for dynamically controlling NO.sub.X content in emissions from a furnace by adjusting the flow of primary fuel and of a secondary stage fuel, and in some cases controlling the amount or placement of combustion air into the furnace.

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 (3A) configured to supply a first fuel gas; and a first combustion-supporting gas supply path (4A) configured to supply a first combustion-supporting gas; wherein the raw material powder supply path includes: a first supply path (2A) configured to extend in an axial direction of the burner (1); a first collision wall (2D) configured to be located at the top of the first supply path (2A); a plurality of second supply paths (2B) configured to be branched from the top of the first supply path (2A), and extend radially from the center of the burner (1); one or more dispersion chambers (2C) configured to be located at the top of the second supply path (2B), and have a space in which the cross-sectional area is larger than the cross-sectional area in the second supply path (2B); and one or more raw material ejection holes (2a) configured to communicate with the dispersion chamber (2C).

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 (3A) configured to supply a first fuel gas; and a first combustion-supporting gas supply path (4A) configured to supply a first combustion-supporting gas; wherein the raw material powder supply path includes: a first supply path (2A) configured to extend in an axial direction of the burner (1); a first collision wall (2D) configured to be located at the top of the first supply path (2A); a plurality of second supply paths (2B) configured to be branched from the top of the first supply path (2A), and extend radially from the center of the burner (1); one or more dispersion chambers (2C) configured to be located at the top of the second supply path (2B), and have a space in which the cross-sectional area is larger than the cross-sectional area in the second supply path (2B); and one or more raw material ejection holes (2a) configured to communicate with the dispersion chamber (2C).

A combustion system includes a fuel and oxidant source and a flame holder. The flame holder includes a plurality of discrete slats arranged in parallel defining combustion channels between adjacent slats. Pairs of adjacent slats may be oriented to operate substantially as a V-gutter. The fuel and oxidant source outputs fuel and oxidant into the combustion channels. The flame holder holds a combustion reaction of the fuel and oxidant in the combustion channels.

A combustion system includes a fuel and oxidant source and a flame holder. The flame holder includes a plurality of discrete slats arranged in parallel defining combustion channels between adjacent slats. Pairs of adjacent slats may be oriented to operate substantially as a V-gutter. The fuel and oxidant source outputs fuel and oxidant into the combustion channels. The flame holder holds a combustion reaction of the fuel and oxidant in the combustion channels.

A burner gas supply apparatus for increasing flame turbulence, the apparatus comprising a conduit having a characteristic width, W, defined by an inner surface having a circumferential direction and an axial direction, the axial direction terminating in a nozzle defining a nozzle exit plane and having a characteristic dimension, d, where d<=W; and three bluff bodies each with a characteristic dimension, D.sub.bb-i, projecting a length, L.sub.i into the conduit from the inner surface, and an axial spacing X.sub.i between adjacent bluff bodies (between the downstream bluff body and the nozzle exit plane in the case of X.sub.1) wherein 0.5<=L.sub.i/W<=1 and wherein X.sub.i/D.sub.bb-i<=30.

Disclosed are an oxygen-enriched acid gas incinerator burner. A refractory lining is arranged on an inner wall of a housing. A rear part of an inner cavity of the housing is connected to a throat opening. A pure oxygen spray gun, an acid gas spray gun, and a fuel gas spray gun are arranged in a pipe-in-pipe structure from outside to inside. A rear part of the pure oxygen spray gun is fixed within the inner cavity. A front part of the acid gas spray gun is fixed through a flange at an outer end of the pure oxygen spray gun. A front part of the fuel gas spray gun is fixed through a flange at an outer end of the acid gas spray gun. A combustion-supporting air inlet is formed on the housing, and a lower part thereof is communicated with a gas collection chamber.

The present subject matter relates to a smoke tube boiler including: a mix chamber, a heat exchanger, a firing rod assembly, a sealing means, and an air-cooled cooling means and a water-cooled cooling means.

A system for mixing hydrogen gas and air includes a housing extending from a first end to a second end and defining a mixing chamber. The second end receives the air. A tubular mixer in the mixing chamber extends along a central axis from a first end to a second end. The mixer has an outer surface and an inner surface defining a central passage. The second end is closed by an end wall. The mixer has first fluid directing structure for directing the air and the hydrogen gas radially inward from the mixing chamber to the central passage to form a mixture. A distributor is secured to the first end of the housing and receives the mixture from the first end of the mixer. The distributor includes second fluid directing structure for directing the mixture radially outward to a burner.

Emissions of NO.sub.X and/or CO are reduced at the stack by systems and methods wherein a primary fuel is thoroughly mixed with a specific range of excess combustion air. The primary fuel-air mixture is then discharged and anchored within a combustion chamber of a burner. Further, the systems and methods provide for dynamically controlling NO.sub.X content in emissions from a furnace by adjusting the flow of primary fuel and of a secondary stage fuel, and in some cases controlling the amount or placement of combustion air into the furnace.