Hydrogen generator and fuel cell power generator

Details Hydrogen generator and fuel cell power generator Hydrogen generator and fuel cell power generator

C - Chemistry, Metallurgy

01

B

C01B 3/38 (2006.01) C01B 3/48 (2006.01) H01M 8/06 (2006.01)

Patent

CA 2724183

There is provided a hydrogen generator that prevents supply of droplets to a reforming catalyst layer and that exhibits stable performance. The hydrogen generator includes a water evaporation unit 7 to which a raw gas and water is supplied; a reforming catalyst layer 9 to which a gas mixture is supplied from the water evaporation unit 7; a burner 4 configured to mix and combust a fuel gas with air; a combustion exhaust gas flow channel 16 which is provided on an inner side of the water evaporation unit 7 and through which the combustion exhaust gas flows; and a conversion catalyst layer 10 which is disposed on an outer side of the water evaporation unit 7 and to which a reformed gas is supplied. The water evaporation unit 7 includes double cylinders 100 and 101 and a helical round bar 18 sandwiched between the cylinders 100 and 101, and a pitch of the helical round bar 18 in a downstream portion of the water evaporation unit 7 is made smaller than a pitch of the helical round bar 18 in a portion of the water evaporation unit 7 except the downstream portion thereof.

L'invention concerne un générateur d'hydrogène qui empêche l'acheminement de gouttelettes vers une couche de catalyseur de reformage et qui a une performance stable, le générateur ayant un vaporisateur d'eau (7) qui fournit la matière première gazeuse et de l'eau, une couche de catalyseur de reformage (9) qui achemine le mélange gazeux provenant du vaporisateur d'eau (7), un brûleur (4) qui mélange le gaz combustible avec de l'air et le brûle, une voie de circulation du gaz de combustion (16) qui est pourvue sur le côté interne du vaporisateur d'eau (7) pour la circulation du gaz de combustion et une tige enroulée en spirale (18) qui a une couche de catalyseur de transformation (10), qui est placée sur l'extérieur du vaporisateur d'eau (7) et qui achemine le gaz de reformage, et insère le vaporisateur d'eau (7) entre deux cylindres (100) et (101). Le pas de la tige enroulée en spirale (18) est petit par rapport à l'autre endroit dans la partie aval du vaporisateur d'eau (7).

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