Patent ID: 6376113
Filing Date: 2002-04-23
Classification: B01J,C01B,H01M,Y02E,Y02P

Abstract:
A fuel cell system, comprising:a fuel processor adapted to receive a feed stream containing a carbon-containing feedstock and to produce a byproduct stream and a product hydrogen stream containing hydrogen gas therefrom, wherein the fuel processor includes a hydrogen-production region, in which the feedstock is reacted at an elevated temperature to form a product stream containing hydrogen gas, and a separation region containing at least one hydrogen-selective membrane adapted to separate the product stream into the product hydrogen stream and a byproduct stream; a fuel cell stack adapted to receive the product hydrogen stream and produce an electric current therefrom; and a feedstock reservoir containing a carbon-containing feedstock; a water reservoir containing water; and a pump assembly adapted to draw a feed stream containing feedstock from the feedstock reservoir and a water stream containing water from the water reservoir and to deliver the feed and water streams to the fuel processor, wherein the pump assembly includes a plurality of synchronized pump heads adapted to pump fluid from a corresponding plurality of pump cavities, wherein one of the pump cavities is adapted receive feedstock from the feedstock reservoir and one of the pump cavities is adapted to receive water from the water reservoir.