NOVELTY - An odorization component removal apparatus removes odorization component in raw fuel supplied to a steam reforming device by absorption. The apparatus has a guard catalyst layer having odorization agent removal portion and desulfurizing agent. The removal portion allows odorization component to pass through layer including raw fuel for transition metal oxide, and activated carbon layer does not containing bromine, and removes mercaptan as odorization component in raw fuel, by absorption. The agent removes sulfur compound of trace from mixing portion of raw fuel and water (process water).    USE - Odorization component removal apparatus in steam reforming device.    ADVANTAGE - The odorization component removal apparatus enables to remove mercaptan from raw material containing odorization agent at high selectivity, reliability and adsorption capacity.    DETAILED DESCRIPTION - An odorization component removal apparatus removes odorization component in raw fuel supplied to a steam reforming device by absorption. The apparatus has a guard catalyst layer consisting of odorization agent removal portion and desulfurizing agent. The removal portion allows odorization component continuously to pass through layer including raw fuel for transition metal oxide, and activated carbon layer does not containing bromine, and removes mercaptan as odorization component in raw fuel, by absorption. The desulfurizing agent removes sulfur compound of trace from mixing portion of raw fuel and water (process water) discharged from removal portion in flow path up to modification-catalyst layer. An INDEPENDENT CLAIM is included for odorization component removal method, which involves allowing odorization component continuously to pass through layer including raw fuel for transition metal oxide, and activated carbon layer, removing mercaptan by absorption in raw fuel, mixing water with raw fuel, and passing desulfurizing agent through guard catalyst layer having interflow of raw fuel and water and removing odorization component.    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view illustrating odorization component removal method. (Drawing includes non-English language text)