Abstract
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. Consequently, it is suggested that the optimum condition for DME pre-supply exists to give best startability of DME catalytic combustor with this procedure.
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