Liquid heaters and vaporizers – Flue – Horizontal
Patent
1988-10-11
1991-02-05
Favors, Edward G.
Liquid heaters and vaporizers
Flue
Horizontal
110234, 110264, 122 442, 122136R, 1221552, 431173, F22B 712
Patent
active
049895494
ABSTRACT:
A combustion apparatus for staged combustion inside the Morison tube of a firetube boiler for lowering the concentration of NO.sub.x in the exhaust gases. Combustion occurs in a first and second stage, the first stage being sub-stoichiometric combustion and the second stage being above-stoichiometric combustion. In two embodiments of the combustion apparatus, the first stage combustion occurs directly adjacent the inlet end of the boiler furnace and the second stage combustion occurs inside the boiler furnace which acts as a combustion apparatus. In other embodiments of the combustion apparatus, both the first and second stage combustion occur inside the boiler furnace which acts as a combustion apparatus. Swirling and/or cyclonic combustion is utilized in the first and second stages of the combustion apparatus. There is provided heat exchange means surrounding and extending substantially throughout the axial length of the combustion chamber, i.e., the boiler furnace, for absorbing heat and cooling the combustion gases therein.
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Donlee Technologies Inc.
Favors Edward G.
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