Ultra low NOX burner

A burner system for safely combusting fuel with oxidant in order to control flashback, said burner system comprising:

• a reaction chamber for substantially combusting a fuel and oxidant mixture, said reaction chamber further comprising:
• a plurality of inlets for receiving the mixture;
• a burner axis;
• and
• an outlet for discharging the substantially combusted mixture into a furnace;
• said burner system further comprising:
• a plurality of mixer elements for mixing fuel and oxidant in a predetermined proportion in order to produce the mixture, said mixer elements comprising:
• a mixer inlet for each of the plurality of mixer elements wherein fuel and oxidant are admitted into each mixer inlet;
• a mixer outlet for each of the plurality of mixer elements, wherein each mixer outlet is connected to a respective reaction chamber inlet, wherein combustion occurs substantially proximate to the mixer outlet, wherein each mixer outlet is located off-center a significant distance from the burner axis so as to provide a flow imbalance in the reaction chamber in order to recirculate part of the substantially combusted mixture within said reaction chamber toward each mixer outlet, wherein the remainder of said substantially combusted mixture is discharged out of the outlet of said reaction chamber;
• wherein said burner system further comprising:
• at least one fuel plenum for commonly supplying fuel to each of the plurality of mixer inlets;
• and
• at least one oxidant plenum for commonly supplying oxidant to each of the plurality of mixer inlets.