Waterless 5 kWe Diesel Reformer

Solid oxide fuel cells (SOFCs) are attractive candidates to replace conventional diesel-fueled generators and auxiliary power units because of their promise of greater fuel efficiency, efficient operation at part load, and low acoustic signature. With the rapid advancements in SOFC technology, portable SOFC generators and auxiliary power units (APUs) are nearing commercial reality. However, the lack of a practical hydrogen distribution infrastructure and energy dense hydrogen storage technology dictates that such SOFC generators and APUs operate on conventional fuels, such as diesel. Unfortunately, the efficient conversion of diesel into a SOFC-usable gaseous product containing hydrogen, carbon monoxide, and methane is difficult ¿ the high molecular weight constituents, aromatic hydrocarbon content, and presence of varying amounts of sulfur have prevented the commercial development of diesel reformers. This project will develop a simple, compact, and cost-effective diesel reformer, well-suited for integration with SOFCs. Commercial Applications and other Benefits as described by the awardee: The accelerated introduction of diesel-fueled, fuel-cell power plants should benefit the long haul trucking, recreational vehicle, and marine markets. When coupled with appropriate desulfurization technology, the product also should find use in military applications, reducing logistic fuel supply needs, reducing costs, and improving operating capabilities. From a broader perspective, the widespread use of fuel cells would increase national energy efficiency, resulting in reduced environmental damage and reduced dependence on foreign sources of energy.