Liquid heaters and vaporizers – Water tube – Coil
Patent
1995-07-17
1997-06-17
Kamen, Noah P.
Liquid heaters and vaporizers
Water tube
Coil
1223671, F22B 3710
Patent
active
056387733
ABSTRACT:
A method and apparatus for low NOX combustion of natural gas in a compact steam boiler having output steam delivery controlled by predetermined outlet steam pressure. The compact boiler employs a small high heat release combustor discharging into a forced draft convective heat exchange section. In operation, the compact boiler is completely and automatically self-operating, employing flue gas recirculation (FGR) wherein the FGR is admitted into the burner combustion air through a valve controlled by boiler flue gas NOX content. A novel bell mouthed flue gas scoop is utilized in the boiler stack upstream of the NOX sensor. In an alternate combustion chamber design, a cylindrical water wall coil surrounds the combustion process, increasing boiler efficiency through the inherent large temperature difference between the coil and the combustion in process, along with reducing the combustion temperature and further reducing the NOX content of combustion products. A further variation in the combustion system utilizes a ceramic shield surrounding a natural gas burner as it fires into the compact combustion chamber. Primary and secondary combustion air are admitted to the combustion chamber through first stage combustion internal of the shell and second stage combustion occurring internal of the boiler combustion chamber.
REFERENCES:
patent: 3236211 (1966-02-01), Okaniwa
patent: 3908604 (1975-09-01), Vocklinghaus
patent: 3998188 (1976-12-01), Priest et al.
patent: 5040470 (1991-08-01), Lofton et al.
patent: 5156097 (1992-10-01), Booth et al.
Brady Robert T.
Townsend Dean C.
Weller George A.
Werling Joseph H.
Kamen Noah P.
Lidd Francis J.
Mark IV Transportation Products Corp.
LandOfFree
Method and apparatus for low NOX combustion of gaseous fuels does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for low NOX combustion of gaseous fuels, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for low NOX combustion of gaseous fuels will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2151646