Abstract: A staged, lean pre-mix radiant wall burner having an internal staged fuel discharge tip and an internal flow diverter, and a method of using the radiant wall burner, which allow the combustion of a high hydrogen content fuel without the occurrence of flashbacks and which also provide reduced NOx emissions and allow a closer spacing of the burners when installed in a wall, floor, or ceiling of a fired heater in a multiple burner arrangement.

Abstract: A plugging resistant, highly stable free-jet burner and method which provide Ultra-Low NOx emissions using (a) large free-jet ejection ports, (b) a wide tip-to-tip spacing, and (c) auxiliary stabilization tips in the throat of the burner which are highly resistant to plugging and also produce very low levels of NOx emissions.

Abstract: A staged, lean pre-mix radiant wall burner having an internal staged fuel discharge tip and an internal flow diverter, and a method of using the radiant wall burner, which allow the combustion of a high hydrogen content fuel without the occurrence of flashbacks and which also provide reduced NOx emissions and allow a closer spacing of the burners when installed in a wall, floor, or ceiling of a fired heater in a multiple burner arrangement.

Abstract: A burner tip apparatus which is resistant to plugging, and a staged air method of operation which reduces the peak temperature of the flame of the burner tip to provide low levels of NOx and other emissions. The burner tip can be used as an auxiliary burner tip for stabilizing a main burner flame, or for other purposes.

Abstract: A burner apparatus and method which provide an increased amount of internal flue recirculation for reducing NOx emissions by ejecting a series of surrounding primary fuel streams and also ejecting on one or more subsequent series of surrounding fuel streams outside of the burner wall toward the burner combustion wherein each succeeding series of surrounding fuel streams must travel a greater distance to the combustion zone and each series of surrounding fuel streams must contact one or more radial impact structures provided on the exterior of the burner wall.

Abstract: A burner tip apparatus which is resistant to plugging, and a staged air method of operation which reduces the peak temperature of the flame of the burner tip to provide low levels of NOx and other emissions. The burner tip can be used as an auxiliary burner tip for stabilizing a main burner flame, or for other purposes.

Abstract: A plugging resistant, highly stable free-jet burner and method which provide Ultra-Low NOx emissions using (a) large free-jet ejection ports, (b) a wide tip-to-tip spacing, and (c) auxiliary stabilization tips in the throat of the burner which are highly resistant to plugging and also produce very low levels of NOx emissions.

Abstract: A burner apparatus and method which provide an increased amount of internal flue recirculation for reducing NOx emissions by ejecting a series of surrounding primary fuel streams and also ejecting on one or more subsequent series of surrounding fuel streams outside of the burner wall toward the burner combustion wherein each succeeding series of surrounding fuel streams must travel a greater distance to the combustion zone and each series of surrounding fuel streams must contact one or more radial impact structures provided on the exterior of the burner wall.

Abstract: An assisted flare apparatus and method which increase the amount of air which is inducted into each of the flare combustion tip assemblies used in the apparatus by injecting the steam or other assist media used in each tip assembly into an inner conduit of the tip assembly which is configured such that at least a lower portion of the inner conduit is in the form of a venturi flow structure in which a straight venturi flow section is followed by a diverging venturi bell outlet section.

Abstract: A flow momentum enhancing device having an airfoil shape is used in a new or refurbished burner to increase the momentum of the burner combustion air stream and create a reduced pressure region which pulls inert products of combustion into the combustion process. The inert products of combustion mix with the burner air and/or fuel streams to lower the peak flame temperature of the burner and provide reduced NOx production.

Abstract: A flow momentum enhancing device having an airfoil shape is used in a new or refurbished burner to increase the momentum of the burner combustion air stream and create a reduced pressure region which pulls inert products of combustion into the combustion process. The inert products of combustion mix with the burner air and/or fuel streams to lower the peak flame temperature of the burner and provide reduced NOx production.

Abstract: A burner apparatus for a furnace system and a method of burner operation wherein a non-symmetrical positioning of one combustion fuel discharge tip or a grouping of fuel discharge tips within the burner wall produces side-by-side lean and fuel rich combustion stage zones and also produces internal flue gas recirculation.

Abstract: A burner apparatus for a furnace system and a method of burner operation wherein a non-symmetrical positioning of one combustion fuel discharge tip or a grouping of fuel discharge tips within the burner wall produces side-by-side lean and fuel rich combustion stage zones and also produces internal flue gas recirculation.

Abstract: A system for automatically igniting a gas lamp by sensing the presence of a flame according to one embodiment of the present invention may include an igniter, power source, relay, valve controller, pulse-width modulator, and microcontrol unit. The microcontrol unit is connected to the igniter, the power source, the valve controller, the relay, and the pulse-width modulator. The microcontrol unit uses the pulse-width modulator to calibrate a total power supply to the igniter and determines the presence of a flame by sensing an electrical resistance of the igniter to the total power supply. The microcontrol unit also controls the amount of electricity supplied to the igniter through the relay and adjusts the amount of combustible fluid supplied to the igniter through the valve controller to automatically ignite the gas lamp.

Abstract: A low NOx burner and method wherein (a) combustion air flows through the interior of the burner in a manner effective for drawing an amount of inert flue gas diluent from the fired heating system into the combustion air stream, preferably via one or more induction channels provided through the burner wall, and/or (b) air or an inert gas is discharged into the induction channel(s) in a manner effective for delivering flue gas into the combustion air stream.

Abstract: This invention provides a removable staybar that is securely attached to the window frame and removed easily, with minimal effort after installation of the window, so that the full perimeter of the window frame can be opened and unobstructed for passage of bulky items therethrough. The staybar includes two opposing ends each having a groove and surrounding ramped inner faces. These grooves each pass over a web on a respective attachment member that is fixedly mounted to a side of the window frame. Each web on an attachment member supports a corresponding pair of ramped faces. The ramped faces of each attachment member are oriented so that, when each end of the staybar is moved onto a respective attachment member, the engaging ramped faces cause the ends of the staybar to be forcibly driven toward the adjacent inner-facing sides of the window frame for a tight, abutting fit between the frame faces and respective staybar ends.

Abstract: A burner and combustion method for a radiant wall heating system wherein each burner fuel ejector is positioned such that at least a substantial portion of the burner combustion air is discharged from an area beyond the ejector located the greatest distance from the radiant wall.

Abstract: An improvement for an ejector having at least one discharge port effective for delivering a flow of fuel into a heating system such that flue gas in the heating system is entrained in the flow of fuel. The improvement comprises the ejector having an aerodynamic shape effective for increasing entrainment of the flue gas in the flow of fuel at the region of discharge adjacent the discharge port.

Abstract: A burner and method for reducing NOx emissions from process heaters, boilers, and other heating systems having flue gases present therein. The inventive burner and method preferably involve the single stage combustion of fuel gas which is ejected outside of a burner wall in free jet flow such that at least a portion of the flue gas is entrained in the fuel gas as it travels to a combustion zone at the forward end of the burner wall. Air or other oxygen-containing gas is preferably delivered to the combustion zone via an interior passageway. The inventive burner preferably comprises a plurality of ejectors positioned outside of the burner wall and preferably also comprises one or more exterior impact structures positioned to assist in further mixing the flue gas with the fuel.

Abstract: An improved burner for combustion of fuel gas with air in a manner to result in low NOx, the burner is generally circular and has a refractory tile and gas tips. The gas tips are spaced around the outer circumference of a generally circular passageway in the burner tile, each gas tip is positioned to cause the fuel gas to entrain furnace flue gas. Each gas tip has one or more ports, an ignition port and at least one firing port. The ignition port injects fuel through a passageway to the burner tile. The firing port injects fuel gas in the direction that is generally upward with respect to the pathway of the ignition port. This causes fuel gas to entrain combustion products from the flue gas, the resulting mixture of fuel gas and flue gas is directed out of the burner tile to mix with combustion air that is discharged through the burner tile.