NOVELTY - Processing fuel feedstock including oxygen and hydrocarbons having higher and lower hydrocarbon content includes using a pre-processing assembly (108) having a deoxidizing bed for reducing oxygen in the fuel feedstock and a pre-reforming bed for reducing higher hydrocarbon content in the fuel feedstock. The deoxidizing bed and the pre-reforming bed are disposed within a common reaction vessel such that the fuel feedstock first passes through the deoxidizing bed and then through the pre-reforming bed.    USE - Method for processing fuel feedstock for a fuel cell.    ADVANTAGE - The method uses a pre-processing assembly of simpler design, less cost and longer life. The pre-processing assembly can process fuel feedstocks containing hydrocarbons and oxygen without deactivation of the pre-processing catalyst, can operate without an additional hydrogen supply and has an increased operating life, and can retard the effects of propylene and other olefins in hydrocarbon containing fuel feedstocks.    DETAILED DESCRIPTION - Processing fuel feedstock including oxygen and hydrocarbons having higher and lower hydrocarbon content, comprises providing the fuel feedstock, reducing oxygen in the fuel feedstock using a deoxidizing unit having a deoxidizing bed, and reducing the higher hydrocarbon content in the fuel feedstock using a pre-reforming unit having a pre-reforming bed. The deoxidizing unit and the pre-reforming unit are disposed within a common vessel such that the fuel feedstock first flows through the deoxidizing unit and through the pre-reforming unit. The pre-reforming bed of the pre-reforming unit is sized such that the space velocity of the fuel feedstock in the pre-reforming unit is 2000-5000 hour-1 and the superficial velocity of the fuel feedstock in the pre-reforming unit is such as to provide a desired amount of hydrogen back diffusion. The deoxidizing bed of the oxidizing unit is sized such that the space velocity of the fuel feedstock in the deoxidizing unit is 5000 and 12000 hour-1.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic flow diagram of a fuel cell system having a fuel delivery system.    Fuel supply (102)    Desulfurizer (104)    Preheater (106)    Pre-processing assembly (108)    Fuel cell assembly (112)