Method of low-NOx combustion and burner device for effecting sam

Details Method of low-NOx combustion and burner device for effecting sam Method of low-NOx combustion and burner device for effecting sam

1993-06-01

1995-04-04

Dority, Carroll B.

Combustion

Process of combustion or burner operation

Flame shaping, or distributing components in combustion zone

431 9, 431173, 431284, F23C 500

Patent

active

054031818

ABSTRACT:
A method of low-NOx combustion and a burner device for effecting the same, in which a primary fuel is injected in a direction from the periphery of stream of a combustion air towards that same combustion air, effecting a first combustion, so as to create a generally cylindrical primary flame covering the combustion air, whereby a secondary fuel injected towards the combustion air is shielded or intercepted by such primary flame from the combustion air, while causing NOx in the primary flame to be reduced by the secondary fuel, after which, a second combustion is effected by bringing the secondary fuel to contact with a portion of the combustion air penetrating through the primary flame, at a downstream side. This arrangement permits more positive decrease of NOx density in an exhaust gas.

REFERENCES:
patent: 2222822 (1940-11-01), Hordensson
patent: 2822864 (1958-02-01), Black
patent: 4395223 (1983-07-01), Okigami et al.
patent: 4416620 (1983-11-01), Morck
patent: 5073105 (1991-12-01), Martin et al.
patent: 5195884 (1993-03-01), Schwartz et al.
patent: 5271729 (1993-12-01), Gensler et al.
patent: 5275554 (1994-01-01), Faulkner
patent: 5284438 (1994-02-01), McGill et al.
Proceedings From First Conference/Lisbon P.T. Mar. 1988.

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