Chemistry: electrical current producing apparatus – product – and – Having magnetic field feature
Reexamination Certificate
2005-10-25
2005-10-25
Yuan, Dah-Wei (Department: 1745)
Chemistry: electrical current producing apparatus, product, and
Having magnetic field feature
C429S010000, C429S010000
Reexamination Certificate
active
06958195
ABSTRACT:
A burner assembly includes a catalyzed burner for combusting an anode exhaust stream from a polymer electrolyte membrane (PEM) fuel cell power plant. The catalysts coated onto the burner can be platinum, rhodium, or mixtures thereof. The burner includes open cells which are formed by a lattice, which cells communicate with each other throughout the entire catalyzed burner. Heat produced by combustion of hydrogen in the anode exhaust stream is used to produce steam for use in a steam reformer in the PEM fuel cell assembly. The catalyzed burner has a high surface area wherein about 70–90% of the volume of the burner is preferably open cells, and the burner has a low pressure drop of about two to three inches water from the anode exhaust stream inlet to the anode exhaust stream outlet. The burner assembly operates at essentially ambient pressure and at a temperature of up to about 1,700° F. (927° C.). The burner assembly can combust anode exhaust during normal operation of the fuel cell assembly. The burner assembly also includes an adjunct burner which can combust gasoline or anode bypass gas (the latter of which is a reformed fuel gas which is tapped off of the fuel cell stack fuel inlet line) during startup of the fuel cell power plant. Once start up of the fuel cell power plant is achieved, the burner assembly will need only combustion of the anode exhaust by the catalytic burner to produce steam for the reformer.
REFERENCES:
patent: 6093501 (2000-07-01), Werth
patent: 6124053 (2000-09-01), Bernard et al.
patent: 6274259 (2001-08-01), Grasso et al.
patent: 6436562 (2002-08-01), DuBose
patent: 2002/0012893 (2002-01-01), Kaufmann
Assarabowski Richard J.
Breen Sean P.
Lozyniak Steven A.
Unkert William T.
Wysocki Joseph B.
Jones William W.
UTC Fuel Cells LLC
Yuan Dah-Wei
LandOfFree
Steam generator for a PEM fuel cell power plant does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Steam generator for a PEM fuel cell power plant, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Steam generator for a PEM fuel cell power plant will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3483185