OS5-5 エタノール水蒸気改質器の基礎研究(OS5 水素・燃料電池,循環型社会における動力エネルギー技術)

概要

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Our aim is to reveal the optimum conditions for the design of ethanol steam-reforming reactors. Experiments are carried out using two types of catalysts; namely, Cu/ZnO/Al_2O_3 and Ru/Al_2O_3. Using a plant-scale reactor with well-controlled thermal distributions, we specify the effect of steam-carbon molar ratio S/C on the hydrogen concentration C_<H2>, and the effect of the reaction temperature T on C_<H2>, for each catalyst, and we compare such results with chemical-equilibrium theory. Obtained results are as follows. The Ru catalyst shows better performance than the Cu/ZnO catalyst. On the other hand, the Cu/ZnO catalyst shows rather high performance at much lower T. Specifically speaking, under the condition of S/C≧5 and T≧520K, we can obtain C_<H2>=58%.
社団法人日本機械学会の論文
2007-06-13