Reformer
AssigneeNGK Insulators, Ltd.
InventorsFUMIO ABE, NAOMI NODA, JUNICHI SUZUKI
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Abstract
A reformer includes two or more catalyst units in the flow path, capable of generating hydrogen from a reactant fluid containing an organic compound or carbon monoxide, by catalysis. In the reformer, at least two of the catalyst units satisfy the following relationship: Heat capacity of the upstream-side catalyst unit≦Heat capacity of the downstream-side catalyst unit. The reformer is improved in the relationship between these catalyst units with respect to heat capacity. This improvement leads to improvement of the reformer in safety, heating characteristics during the start-up period, efficiency of hydrogen production and reduction in production of CO as the coproduct.
Claims32
A reformer disposed in the flow path of a reactant fluid, comprising two or more catalyst units capable of generating hydrogen from a reactant fluid containing an organic compound or carbon monoxide, by catalysis, wherein at least two of the said catalyst units satisfy the following relationship:
- heat capacity of the upstream-side catalyst unit≦Heat capacity of the downstream-side catalyst unit.
A reformer disposed in the flow path of a reactant fluid, which comprises two or more catalyst units of a honeycomb structure capable of generating hydrogen from a reactant fluid containing an organic compound or carbon monoxide, by catalysis, wherein at least two of said catalyst units satisfy the following relationship:
- cell density of the upstream-side catalyst unit≦Cell density of the downstream-side catalyst unit.
A reformer disposed in the flow path of a reactant fluid, which comprises two or more catalyst units of a honeycomb structure capable of generating hydrogen from a reactant fluid containing an organic compound or carbon monoxide, by catalysis, wherein, at least two of said catalyst units satisfy the following relationship:
- cell density of the upstream-side catalyst unit≧Cell density of the downstream-side catalyst unit.
Dependencies are inferred from the claim text.