F218 モバイル熱源を想定したDME触媒燃焼器の常温始動性向上の研究(OS3 バイオマス・新燃料・環境技術)

概要

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This study investigates low temperature startability of dimethyl-ether (DME) catalytic combustor as a small size heat generator. A procedure of DME pre-supply followed by mixture supply into the reactor shows great improvement of startability. With this procedure catalyst surface temperature increases caused by DME adsorption heat at the period of DME pre-supply and increased temperature promote catalytic reaction. When the period of DME pre-supply is excess, the reactor temperature turns decrease by increased heat loss in comparison with adsorption heat. The mechanism to appear the optimum condition of DME pre-supply to attain the best startability of DME catalytic combustor is discussed based on the DME adsorption characteristics to the catalyst surface.
2009-06-28