Liquid heaters and vaporizers – Miscellaneous
Reexamination Certificate
2008-07-17
2011-11-01
Wilson, Gregory A (Department: 3749)
Liquid heaters and vaporizers
Miscellaneous
C122S442000, C122S443000, C055S434200, C055S444000
Reexamination Certificate
active
08047162
ABSTRACT:
A system and method for quickly cooling and de-pressurizing a boiler arrangement in the event of a plant power loss, a.k.a. a black plant condition. A steam discharge system injects steam from the steam/water circuit into the furnace, thereby both cooling components of the boiler arrangement and reducing pressure in the steam/water circuit. This reduces or eliminates the additional cost associated with providing extra capacity in a steam drum and/or an independently powered boiler water pump. The system and method is particularly useful for quickly cooling the U-beams of a circulating fluidized bed (CFB) boiler during a black plant condition. In application to boiler arrangements with a selective non-catalytic reduction (SNCR) system employing steam as a carrier for a NOxreducing agent, the steam discharge system advantageously uses the discharge nozzles of the SNCR system to inject the steam into the furnace.
REFERENCES:
patent: 4437867 (1984-03-01), Lerner
patent: 5809940 (1998-09-01), James et al.
patent: 6128895 (2000-10-01), Takahama et al.
patent: 6500221 (2002-12-01), Walker et al.
patent: 6619041 (2003-09-01), Marin et al.
patent: 6863703 (2005-03-01), Maryamchik et al.
patent: 7287477 (2007-10-01), Gounder
Maryamchik Mikhail
Szmania Michael J.
Walker David J.
Wietzke Donald L.
Babcock & Wilcox Power Generation Group, Inc.
Marich Eric
Wilson Gregory A
LandOfFree
Black plant steam furnace injection does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Black plant steam furnace injection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Black plant steam furnace injection will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4311826