OS5-2 ジメチルエーテルを燃料とする水蒸気改質システムの開発(OS5 水素・燃料電池,分散と集中の共存)

概要

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We developed 1kWe and 30kWe class reforming systems for application to polymer electrolyte fuel cells, in which dimethyl ether (DME) as fuel and a high-activity and high-selectivity copper-zinc-alumina catalyst were used. It is concluded that the developed reforming system can be downsized and also its efficiency can be improved combining with a heat recovery system. We carried out the demonstration of 1kWe DME-FC system for about 100 hours and confirmed the performance of the system as follows ; (i) steam generation for the DME reforming can be produced by exothermic heat in CO removal reactor, (ii) heat for the DME reforming can be supplied by combustion heat of fuel cell off-gas and (iii) reforming system efficiency is 72.8% (LHV). In addition, our engineering study suggests that the developed reforming technology can apply to a compact reformer for fuel-cell vehicles, under scale up study. 30kWe reforming system is improved compactness and response for use in vehicle-use fuel-cell systems.
社団法人日本機械学会の論文
2006-06-28