Self-oxidation internal heating steam reforming system

C - Chemistry – Metallurgy – 01 – B

Patent

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Details

C01B 3/38 (2006.01) C01B 3/36 (2006.01) H01M 8/06 (2006.01)

Patent

CA 2502639

An autooxidation internal heating type steam reforming system designed so as to effect autoreforming of raw gas in the presence of oxygen to thereby form a hydrogen-rich reformed gas, comprising steam generating means (2) for heating water with combustion gas produced at combustion section (2a) to thereby generate steam, first suction mixing means (4) for introducing raw gas into steam stream by suction to thereby obtain a raw material/steam mixture, and reforming means (1) for oxidizing the raw gas contained in the raw material/steam mixture with oxygenic gas fed from outside to thereby carry out steam reforming of the raw gas with heat of oxidation reaction. The reformed gas is fed to fuel cell (300). Any anode waste gas is recycled as fuel for the steam generating means and/or the raw gas.

L'invention concerne un système de reformage à la vapeur du type à chauffage interne par auto-oxydation qui repose sur un auto-reformage d'un gaz brut en présence d'oxygène et permet d'obtenir ainsi un gaz de reformage riche en oxygène. Ce système comprend des moyens de production de vapeur (2) qui produisent de la vapeur par chauffage d'eau avec un gaz de combustion produit dans la zone de combustion (2a), des premiers moyens de mélange par aspiration (4) pour l'introduction par aspiration de gaz brut dans le courant de vapeur, qui permettent d'obtenir un mélange matière brute/vapeur, et des moyens de reformage (1) pour l'oxydation du gaz brut contenu dans le mélange de matière brute/vapeur au moyen d'une charge oxygénée provenant de l'extérieur pour la mise en oeuvre du processus de reformage de gaz avec la chaleur dégagée par la réaction d'oxydation. Le gaz reformé va alimenter une pile à combustible (300). Tout gaz résiduaire d'anode est recyclé comme combustible pour les moyens de production de vapeur et/ou le gaz brut.

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