Tangentially-fired furnace having reduced NOx emissions

Details Tangentially-fired furnace having reduced NOx emissions Tangentially-fired furnace having reduced NOx emissions

1999-11-30

2000-11-14

Ferensic, Denise L.

Furnaces

Process

Burning pulverized fuel

110346, 110264, 110261, F23D 100, F23C 112

Patent

active

061454540

ABSTRACT:
A furnace of a pulverized coal firing boiler includes a coutant bottom and walls intersecting with the coutant bottom and extending generally vertically therefrom to enclose and define an interior combustion chamber. A first windbox disposed in a corner of the combustion chamber includes therein a vertical array of consecutively spaced coal compartments. A coal nozzle of the lowermost coal compartment of the vertical array is disposed at least ten feet from the intersection of the walls with the coutant bottom. A second coal nozzle is disposed within a second adjacent coal compartment at a first vertical spacing to the first coal nozzle; a third coal nozzle is disposed within a third adjacent coal compartment at a second vertical spacing to the second coal nozzle; and a fourth coal nozzle is disposed within a fourth adjacent coal compartment at a third vertical spacing to the second coal nozzle. The first vertical spacing is less than the second vertical spacing, and the second vertical spacing is less than the third vertical spacing. A second windbox also is disposed below the first windbox and includes a coal nozzle disposed therein that is located within ten feet of the intersection of the walls and the coutant bottom.

REFERENCES:
patent: 3317538 (1967-05-01), Freed et al.
patent: 4144017 (1979-03-01), Barsin et al.
patent: 4304196 (1981-12-01), Chadshay et al.
patent: 4329932 (1982-05-01), Takahashi et al.
patent: 4403941 (1983-09-01), Okiura et al.
patent: 4426939 (1984-01-01), Winship
patent: 4434747 (1984-03-01), Chadshay
patent: 4438709 (1984-03-01), Borio et al.
patent: 4501204 (1985-02-01), McCartney et al.
patent: 4528918 (1985-07-01), Sato et al.
patent: 4672900 (1987-06-01), Santalla et al.
patent: 4716844 (1988-01-01), Koch
patent: 4934284 (1990-06-01), Nitz et al.
patent: 4989549 (1991-02-01), Korenberg
patent: 4991520 (1991-02-01), Tsummura et al.
patent: 4993332 (1991-02-01), Boross et al.
patent: 5020454 (1991-06-01), Hellewell et al.
patent: 5195450 (1993-03-01), Marion
patent: 5311829 (1994-05-01), Clark et al.
patent: 5315939 (1994-05-01), Rini et al.
patent: 5343820 (1994-09-01), Marion
patent: 5417564 (1995-05-01), Briggs
patent: 5626085 (1997-05-01), Donais et al.
patent: 5724897 (1998-03-01), Breen et al.
patent: 5765488 (1998-06-01), Vatsky
patent: 5769008 (1998-06-01), Finker et al.
patent: 5771823 (1998-06-01), Vierstra et al.
patent: 5992337 (1999-11-01), Phillipe et al.

Affiliated with

Also associated with

Rating

Tangentially-fired furnace having reduced NOx emissions does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tangentially-fired furnace having reduced NOx emissions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tangentially-fired furnace having reduced NOx emissions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2054853