Low NOx gas burner apparatus and methods

Patent · Tue Aug 24 00:00:00 EDT 1993

OSTI ID:6060351

Schwartz, R E; Napier, S O; Jones, A P

An improved gas burner apparatus is described for discharging a mixture of fuel gas and air into a furnace space wherein said mixture is burned and flue gases having low NO[sub x] content are formed therefrom comprising: a housing having an open end attached to said furnace space; means for introducing a controlled flow rate of said air into said housing attached thereto; a refractory burner tile attached to the open end of said housing having a base portion, an opening formed in said base portion for allowing air to pass there through and having a wall portion surrounding said opening which extends into said furnace space, the exterior sides of said wall portion being slanted towards said opening and the interior sides thereof being spaced from the periphery of said opening whereby a ledge is provided within the interior of said wall portion; at least one passage formed in said burner tile for conducting primary fuel gas and flue gases from the exterior of said wall portion to the interior thereof; means for forming a fuel gas jet in said passage and drawing flue gases there through adapted to be connected to a source of fuel gas and positioned with respect to said passage whereby a mixture of primary fuel gas and flue gases from said furnace space is discharged from said passage to within the interior of said wall portion; and at least one nozzle adapted to be connected to a source of fuel gas positioned outside said wall portion of said burner tile adjacent the intersection of an exterior slanted side of said wall portion with the surface of said base portion for discharging secondary fuel gas adjacent said external slanted side of said wall portion whereby said secondary fuel gas mixes with flue gases and air in said furnace space. A method is also described for discharging a mixture of fuel gas and air into a furnace space wherein said mixture is burned and flue gases having low NO[sub x] content are formed therefrom.

• Assignee: John Zink Co., Tulsa, OK (United States)
• Patent Number(s): US 5238395; A
• Application Number: PPN: US 7-858563
• OSTI ID: 6060351
• Resource Relation: Patent File Date: 27 Mar 1992
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
FUEL INJECTION SYSTEMS
DESIGN
GAS BURNERS
NITROGEN OXIDES
AIR POLLUTION ABATEMENT
AIR
AIR FLOW
FLUE GAS
FUEL GAS
GAS FLOW
MIXING
NOZZLES
REFRACTORIES
BURNERS
CHALCOGENIDES
FLUID FLOW
FLUIDS
FUEL SYSTEMS
FUELS
GAS FUELS
GASEOUS WASTES
GASES
NITROGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
WASTES
034000* - Natural Gas- Combustion
030700 - Natural Gas- Waste Management