US 6,981,865 B2
Catalyst combustion system, fuel reforming system, and fuel cell system
Katsuya Kobayashi, Tokyo (Japan)
Assigned to Nissan Motor Co., Ltd., Yokohama (Japan)
Filed on Feb. 16, 2001, as Appl. No. 9/784,197.
Claims priority of application No. P2000-041194 (JP), filed on Feb. 18, 2000.
Prior Publication US 2001/0018141 A1, Aug. 30, 2001
Int. Cl. F23C 11/11 (2006.01); H01M 8/06 (2006.01)
U.S. Cl. 431—7 16 Claims
OG exemplary drawing
 
1. A catalyst combustion system comprising:
a closable first fuel supply line which supplies a fluid containing a first fuel;
a closable first oxidizer supply line which supplies a fluid containing a first oxidizer for the first fuel to be combustible therewith under assistance of a catalyst;
a second fuel supply line which supplies a fluid containing a second fuel different from the first fuel;
a second oxidizer supply line which supplies a fluid containing a second oxidizer for the second fuel to be combustible therewith under assistance of the catalyst; and
a catalyst combustor configured to alternately perform a first catalyst combustion between the first fuel and the first oxidizer and a second catalyst combustion between the second fuel and the second oxidizer, and to supply as a thermal medium a fluid containing one of a combustion product of the first catalyst combustion and a combustion product of the second catalyst combustion to the system, wherein
the catalyst combustor
comprises a first catalyst combustion portion connected to the first fuel supply line and the first oxidizer supply line,
a second catalyst combustion portion connected to the second fuel supply line and the second oxidizer supply line, and
a fluid communication portion between the first catalyst combustion portion and the second catalyst combustion portion, which connects the first catalyst combustion portion and the second catalyst combustion portion in fluid communication with each other,
wherein the first catalyst combustion portion and the second catalyst combustion portion have predetermined fluid resistances, wherein
the first catalyst combustion takes place only in the first catalyst combustion portion, as the fluid containing the first fuel and the fluid containing the first oxidizer are supplied to the first catalyst combustion portion, and
the second catalyst combustion takes place in both the first and second catalyst combustion portions, as the fluid containing the second fuel and the fluid containing the second oxidizer are supplied to the second catalyst combustion portion.