NOVELTY - The fuel processing system (14) for a fuel cell power plant (10) operating on sulfur containing fuel, comprises a fuel vaporizer (26) secured in fluid communication through a fuel inlet line with a fuel source, a sulfur tolerant reformer (32) secured in fluid communication through an extension of the fuel inlet line with the fuel vaporizer, a carbon monoxide conversion station secured in fluid communication through an extension of the fuel inlet line with the reformer, and a sulfur scrubber station (52) secured in fluid communication through an extension of the fuel inlet line.    USE - The fuel processing system is useful for a fuel cell power plant operating on sulfur containing fuel, and useful in transportation vehicles and stationary power plants.    ADVANTAGE - The fuel processing system can be economically and compactly manufactured with light-weight and less assembly and operating costs without any complex, and efficiently minimizes sulfur contamination of the fuel cells.    DETAILED DESCRIPTION - The fuel processing system (14) for a fuel cell power plant (10) operating on sulfur containing fuel, comprises a fuel vaporizer (26) secured in fluid communication through a fuel inlet line with a fuel source, a sulfur tolerant reformer (32) secured in fluid communication through an extension of the fuel inlet line with the fuel vaporizer, a carbon monoxide conversion station secured in fluid communication through an extension of the fuel inlet line with the reformer, and a sulfur scrubber station (52) secured in fluid communication through an extension of the fuel inlet line with and downstream from the carbon monoxide conversion station for removing sulfur from the fuel passing through the sulfur scrubber station. The power plant has a fuel cell including an anode flow field and a cathode flow field disposed on opposed sides of an electrolyte. The sulfur scrubber station includes an air inlet for selectively permitting air into the scrubber station. The anode flow field of the fuel cell is secured in fluid communication with and downstream from the sulfur scrubber station through an additional extension of the fuel inlet line, so that fuel flows from the fuel source through the fuel inlet line sequentially to and through the fuel vaporizer, the reformer, the carbon monoxide conversion station and the sulfur scrubber station and to and through the anode flow field of the fuel cell. The carbon monoxide conversion station comprises a water gas shift reactor device in fluid communication with and upstream from a preferential selective oxidizer device that is secured in fluid communication with the fuel inlet line. The fuel consists of ethanol, methanol, gasoline, diesel fuel, natural gas and/or liquid petroleum gas. The sulfur scrubber station includes sulfur adsorption material consisting of potassium-promoted activated carbon, group I metals on a support material and other materials known to effect the Claus reaction. An INDEPENDENT CLAIM is included for a method of desulfurizing a hydrocarbon fuel for a fuel cell power plant.    DESCRIPTION OF DRAWING(S) - The diagram shows a simplified schematic representation of a fuel cell power plant including a fuel processing system.    Fuel cell power plant (10)    Fuel processing system (14)    Fuel vaporizer (26)    Reformer (32)    Sulfur scrubber station. (52)