Hydrogen-producing fuel processing and fuel cell systems...

C - Chemistry – Metallurgy – 01 – B

Patent

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Details

C01B 3/32 (2006.01) C01B 3/02 (2006.01) C01B 3/50 (2006.01) H01M 8/06 (2006.01)

Patent

CA 2732413

Hydrogen-producing fuel processing assemblies and fuei cell systems with at least one temperature-responsive valve assembly, and methods for feedback regulation of the hydrogen-producing region. The temperature-responsive valve assembly is adapted to automatically respond to the temperature of a gas stream of interest to regulate the flow of a subject gas stream therethrough. In some embodiments, these streams are the same streams, while in others, they are different streams. The streams may include at least the reformate stream from a hydrogen-producing region of the fuel processing assembly, the byproduct stream from a purification region, and the product gas stream from the purification region. In some embodiments, the subject gas stream may be the byproduct stream, which is in fluid communication for delivery as a combustible fuel stream for a burner or other heating assembly that produces a heated exhaust stream to heat the hydrogen- producing region of the fuel processing assembly.

L'invention concerne des ensembles de traitement de combustible produisant de lhydrogène et des systèmes de piles à combustible munis dau moins un ensemble soupape réagissant à la température, ainsi que des procédés de régulation par rétroaction de la région productrice dhydrogène. Lensemble soupape réagissant à la température est prévu pour réagir automatiquement à la température dun flux de gaz dintérêt afin de réguler le débit dun flux de gaz considéré le traversant. Dans certains modes de réalisation, ces flux sont les mêmes flux, tandis que dans dautres, il sagit de flux différents. Les flux peuvent comprendre au moins le flux de produit de reformage issu dune région productrice dhydrogène de lensemble de traitement de combustible, le flux de sous-produit issu dune région de purification et le flux de gaz produit issu de la région de purification. Dans certains modes de réalisation, le flux de gaz considéré peut être le flux de sous-produit, qui est en communication fluidique en vue de son acheminement en tant que flux de combustible jusquà un brûleur ou autre ensemble de chauffe produisant un flux déchappement chauffé servant à chauffer la région productrice dhydrogène de lensemble de traitement de combustible.

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