Fuel cell power generation system

C - Chemistry – Metallurgy – 01 – B

Patent

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319/4, 48/45

C01B 3/40 (2006.01) C01B 3/38 (2006.01) H01M 8/06 (2006.01)

Patent

CA 2033064

In a fuel cell power generation system for use with a fuel gas which is prepared by desulfurizing a raw fuel material such as naphtha, LPG, town gas, or the like and then, processing it by steam reforming reaction and thus, consists mainly of hydrogen or a process of producing the fuel gas, the desulfurization of the raw fuel material is implemented using a copper/zinc desulfurizing agent. As a result of the desulfurization, the raw fuel material is desulfurized at a higher level and the deterioration of a steam reforming catalyst employed is prevented. Accordingly, steady long-run operation of the fuel cell will be ensured. Also, upon the steam reforming reaction, the S/C (the mole number of steam per one mole of carbon in a raw fuel material) is reduced and thus, the concentration of hydrogen in the fuel gas will. be increased providing an improvement in the efficiency of power generation.

Système de production d'énergie par pile à combustible utilisant un gaz combustible qui contient de l'hydrogène en tant que composant principal et que l'on obtient en désulfurisant les combustibles de départ, tels que le naphte, le LPG, le gaz de ville, etc., et en soumettant le gaz résultant à reformage de vapeur. L'invention se rapporte également à un procédé de production de gaz combustible, dans lequel les combustibles de départ sont désulfurisés grâce à l'utilisation d'un agent désulfurisant à base de cuivre-zinc. Lesdits combustibles de départ sont fortement désulfurisés pour empêcher la dégradation du catalyseur de reformage de vapeur. Il en résulte que cette pile à combustible peut fonctionner de manière stable pendant longtemps, et dès lors que le rapport S/C (le nombre molaire de vapeur par mole de carbone d'hydrocarbures dans le combustible de départ) peut être réduit pendant le reformage de vapeur, la teneur en hydrogène du gaz combustible peut être accrue, ce qui améliore le rendement énergétique de la pile à combustible.

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