Burner for tangentially fired boiler

Details Burner for tangentially fired boiler Burner for tangentially fired boiler

1995-01-30

1996-07-16

Denion, Thomas E.

Furnaces

Utilizing powdered fuel

Having rotary flow means

110347, 239502, 431183, F23D 102

Patent

active

055356869

ABSTRACT:
A low nox burner for use in a tangentially-fired furnace having a pivotally mounted burner tip attached to a fuel passage that in operation, conveys pulverized coal carried by an airstream. The burner tip includes a plurality of first and second blade members extending substantially radially from a centrally positioned, cone-shaped support member. A fuel guide surrounds and is attached to the outer ends of the first and second blade members thereby defining alternating fuel-rich and fuel-lean channels between the centrally positioned support member and inside of the fuel guide. An air guide surrounds the fuel guide and defines a passage for combustion air which is received from an air housing. The position of the air guide with respect to the fuel guide is maintained by a plurality of angled vanes which are operative to impart rotational forces to the combustion air traveling between the air guide and the fuel guide.

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