Abstract
This study focuses on the fundamental characteristics of DME (Dimethyl Ether) combustion, aiming at the development of the new low-NOx combustion technologies suitable to DME. DME is one of the most promising new alternative fuels owing to its cleanness of the exhaust gas and wide applications. Combustion experiments using a diffusion burner were conducted for characterizing DME through the comparison with the results of LPG and 13A-city gas. Experimental results demonstrate a high potential of DME as a boiler and a gas-turbine fuel. DME has a wide stable-combustion range than those of the other fuels. In this study, the concept of the low-NOx combustion, referred to as the tube-nested combustion, is applied to the DME combustion. The tube-nested combustor consists of tube banks to cool the burning flame leading to NOx reduction. NOx emission of the DME combustion is extremely reduced by applying this combustion system.
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