Flue gas recirculation system

Details Flue gas recirculation system Flue gas recirculation system

1989-03-20

1991-02-26

Dority, Carroll B.

Combustion

Process of combustion or burner operation

Flame shaping, or distributing components in combustion zone

431115, F23L 700

Patent

active

049958070

ABSTRACT:
A system is provided for reducing the amount of nitrogen oxides produced by conventional gas-fired boilers, water heaters, or other heat transfer devices by diluting the fuel gas with an inert gas. The system includes a mixing unit or region for diluting fuel gas with an inert gas before the fuel gas is supplied to a burner assembly of a combustion device. Flue gas from the combustion chamber of the combustion device may be used to dilute the fuel gas.

REFERENCES:
patent: 385072 (1888-06-01), Schlimme
patent: 727410 (1903-05-01), McAllister
patent: 1101790 (1914-06-01), Doherty
patent: 1629253 (1927-05-01), Breese
patent: 2258515 (1941-10-01), Mowat
patent: 3097686 (1963-07-01), Morrow
patent: 3781162 (1973-12-01), Rudd et al.
patent: 3868211 (1975-02-01), Haye et al.
patent: 3880570 (1975-04-01), Marshall
patent: 4061463 (1977-12-01), Bennett
patent: 4294178 (1981-10-01), Borio et al.

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