OS4-03 ジメチルエーテルを燃料とする化学再生ガスタービンシステム用改質触媒の実験的評価(OS4 省エネルギー・小型分散電源コジェネ技術)

概要

論文の詳細を見る
Dimethyl ether (DME), which is attracting attention as an alternative fuel for versatile use, has been tried to apply to the Chemically Recuperated Gas Turbine (CRGT), since DME steam-reforming that occurs at temperatures below 350℃ with endothermic reaction is suitable for chemical heat recovery and leads to enhancement of power generation efficiency and power output. One of important concerns for the DME-fueled CRGT is related to catalyst reactions, and in particular, by-product methane, which accompanies an exothermic reaction disturbing the heat recovery. Almost 30 kinds of precious-metal catalyst were screened to find the most suitable candidate for the CRGT from the viewpoint of LHV increase of the reformed gas. The selected candidate of catalyst was also tested with various temperature, steam/DME molar ratios (S/DME) and pressures, and the result indicated that T=450℃ and S/DME=3.5 was an appropriate condition for LHV increase and the catalyst was available for the pressure range up to 2.0MPa.
一般社団法人日本機械学会の論文
2005-06-28