Gas: heating and illuminating – Methane -containing product – or treatment or recovery process – Process including chemical reaction
Reexamination Certificate
2005-08-23
2005-08-23
Bhat, N. (Department: 1764)
Gas: heating and illuminating
Methane -containing product, or treatment or recovery process
Process including chemical reaction
C422S177000, C422S198000, C422S198000, C423S246000, C429S010000
Reexamination Certificate
active
06932848
ABSTRACT:
A fuel processing system (FPS) (110) is provided for a fuel cell power plant (115) having a fuel cell stack assembly (CSA) (56). A water gas shift (WGS) reaction section (12, 120) of the FPS (110) reduces the concentration of carbon monoxide (CO) in the supplied hydrocarbon reformate, and a preferred oxidation (PROX) section (40) further reduces the CO concentration to an acceptable level. The WGS section (12, 120) includes a reactor (124) with a high activity catalyst for reducing the reformate Co concentration to a relatively low level, e.g., 2,000 ppmv or less, thereby relatively reducing the structural volume of the FPS (110). The high activity catalyst is active at temperatures as low as 250° C., and may be a noble-metal-on-ceria catalyst of Pt and Re on a nanocrystaline, cerium oxide-based support. Then only a low temperature PROX reactor (46) is required for preferential oxidation in the FPS (110).
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Dardas Zissis
Ghosh Shubhro
Gupta Nikunj
She Ying
Vanderspurt Thomas Henry
Bhat N.
Schneeberger Stephen A.
UTC Fuel Cells LLC
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