BURNER WITH A SERIES OF FUEL GAS EJECTORS AND A PERFORATED FLAME HOLDER

摘要

A combustion system outputs fuel gas from a plurality of fuel ejectors toward a forward end of a burner wall and preheats a perforated flame holder by sustaining combustion reaction of the fuel gas at combustion zone between the burner wall and a perforated flame holder. The combustion system then outputs fuel gas from the fuel ejectors onto the perforated flame holder and sustains a combustion reaction of the fuel gas within the perforated flame holder.

主权项

1. A burner providing reduced NOx emissions comprising:
a burner wall having a forward end; at least one first fuel gas nozzle positioned longitudinally rearward of and laterally outward from the forward end of the burner wall; at least one fuel gas delivery port positioned in the first fuel gas nozzle to deliver fuel gas in a flow path outside of the burner wall to a combustion zone at the forward end of the burner wall; at least one exterior ledge provided on the burner wall and positioned between the fuel gas delivery port and the forward end of the burner wall such that at least a portion of the fuel gas traveling in the flow path will contact the exterior ledge, the exterior ledge being spaced apart from the forward end; and a perforated flame holder including:
an input face proximal to the front end of the burner wall;an output face distal from the burner; anda plurality of perforations extending between the input and output faces.