F - Mech Eng,Light,Heat,Weapons – 23 – D
Patent
F - Mech Eng,Light,Heat,Weapons
23
D
F23D 14/58 (2006.01) F23C 9/00 (2006.01) F23D 1/00 (2006.01) F23D 11/38 (2006.01) F23D 14/24 (2006.01)
Patent
CA 2126812
ABSTRACT LOW NOx AIR AND FUEL/AIR NOZZLE ASSEMBLY An assembly of air and fuel/air nozzles (14,16), the fuel being comminuted coal, are generally of the kind used in a rectangular cross section combustion chamber of an industrial boiler. The air nozzles (14) however, are tilted relative to the fuel/air nozzle (16) so as to diverge therefrom. There results a space between the air flows and the fuel/air flow, which becomes filled with a circulatory flow of the products of combustion. By this means mixing of the air and fuel air flows is delayed and results in a considerable reduction in NOx production. (Fig 1)
Alstom Combustion Services Limited
Gowling Lafleur Henderson Llp
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