A burner for a gas cooker that includes a burner port defining an interior area, the burner port including an opening to the interior area; one or more tubes that are coupled to the burner port and that are configured to provide mixed gas to the interior area of the burner port; a heating element that is configured to cover the opening of the burner port and that is heated by gas-generated heat; and a shielding plate that (i) is coupled between the heating element and the burner port, (ii) is configured to cover a first portion of the opening of the burner port, and (iii) is configured to spread mixed gas that is provided from the one or more tubes into the interior area of the burner port.

A self-regenerating industrial burner including a head with which at least one first fuel injection nozzle, associable at an inlet with a fuel supplying group, and at least one pair of second nozzles, that can be alternatively and selectively passed through by combustion air and combustion exhaust gases, are associated; a tubular body open at opposite ends, arranged at a front part of the head and coaxial to the at least one first nozzle with an end close to the face of the head at which the first nozzle and the at least one pair of second nozzles protrude and the opposite end distant from the face. Each second nozzle includes at least one first tubular portion, radially lying outside the tubular body and defining at an end at least one first port, alternatively for exit of the combustion air and for inlet of the combustion exhaust gases.

The present application relates to a burner for a shaft melting furnace, in particular for a copper shaft melting furnace, comprising a first chamber with an inlet opening, via which an oxygen-containing gas can be supplied to the burner, and an outlet opening, which is arranged at a distal end of a conically tapering sub-portion of the first chamber; a second chamber, which is connected to the conical sub-portion of the first chamber and which has a burner nozzle; a combustion gas line, which opens into the first chamber and via which a combustion gas can be supplied to the burner; and a mixing nozzle, which is arranged in the outlet opening of the first chamber and which has a mixing chamber via which the oxygen-containing gas and the combustion gas can be mixed to form a combustion gas mixture.

The present disclosure provides a nozzle structure for a hydrogen gas burner apparatus capable of reducing an amount of generated NOx. A nozzle structure for a hydrogen gas burner apparatus includes an outer tube and an inner tube concentrically disposed inside the outer tube. The inner tube is disposed so that an oxygen-containing gas is discharged from an opened end of the inner tube in an axial direction of the inner tube. The outer tube extends beyond the opened end of the inner tube in the axial direction of the inner tube so that a hydrogen gas passes through a space between an inner circumferential surface of the outer tube and an outer circumferential surface of the inner tube.

A gas-burning appliance includes a combustor and a flow guide device engaged with the combustor. The combustor has a gas outlet. The flow guide device includes a separator and two stop plates. The separator has an opening. Each of the stop plates is located at the opening, and a top edge thereof is higher than a top surface of the separator. The combustor is located below the separator with the gas outlet corresponding to a space between the stop plates. The flow guide device has at least one first air inlet, which is located below the separator, and communicates with the space between the stop plates. A gas fireplace includes a firebox, a translucent shield, and the gas-burning appliance. A separator divides the firebox into an air chamber, which receives the combustor, and a combustion chamber. Whereby, the visibility of flame and the combustion efficiency could be improved.

A tubular burner and methods of use in a furnace having reduced NO.sub.x emissions are provided. The tubular burner comprises a structural skeleton and a mesh screen disposed about the structural skeleton. The structural skeleton may be coupled to an air/fuel mixture source. The structural skeleton may comprise a hollow interior and a plurality of perforations to allow the air/fuel mixture to pass from the interior of the structural skeleton to the exterior. The burner systems may further comprise a plurality of holes spaced along and between the burners for cross-lighting of multiple burners using a single igniter.

A burner for a gas cooker that includes a burner port defining an interior area, the burner port including an opening to the interior area; one or more tubes that are coupled to the burner port and that are configured to provide mixed gas to the interior area of the burner port; a heating element that is configured to cover the opening of the burner port and that is heated by gas-generated heat; and a shielding plate that (i) is coupled between the heating element and the burner port, (ii) is configured to cover a first portion of the opening of the burner port, and (iii) is configured to spread mixed gas that is provided from the one or more tubes into the interior area of the burner port.

A system to be installed into a radiant tube for reduction of pollutants, the system having a body having a tube shape including a length L.sub.B, an outer diameter OD.sub.B, and an inner diameter ID.sub.B, wherein the body further comprises a proximal surface, a terminal surface, and a circumferential surface extending between the proximal surface and terminal surface, and at least two helical bodies each having a substantially helical shape including a length L.sub.H, and an outer diameter OD.sub.H, wherein an axial distance (E) between the at least two helical bodies is at least 1% of the length L.sub.H.

A gas-burning appliance includes a combustor and a flow guide device engaged with the combustor. The combustor has a gas outlet. The flow guide device includes a separator and two stop plates. The separator has an opening. Each of the stop plates is located at the opening, and a top edge thereof is higher than a top surface of the separator. The combustor is located below the separator with the gas outlet corresponding to a space between the stop plates. The flow guide device has at least one first air inlet, which is located below the separator, and communicates with the space between the stop plates. A gas fireplace includes a firebox, a translucent shield, and the gas-burning appliance. A separator divides the firebox into an air chamber, which receives the combustor, and a combustion chamber. Whereby, the visibility of flame and the combustion efficiency could be improved.

A method and assembly for supplying heat in the desired pattern while suppressing the production of nitrogen oxides and carbon dioxide. The assembly includes a fluid mixture nozzle assembly in fluid communication with an external conduit and a radiant section of a fired process heater. The fluid mixture nozzle assembly includes an open mixing channel having an upstream converging section, a midstream mixing section, and a downstream diverging section for entraining a fluid mixture with vitiated flue gas combustion products. The fluid mixture nozzle assembly is installed in the wall, floor, or ceiling of the fired heater.