DME焚きガスタービン低NO_x燃焼器の開発(<特集>DME(ジメチルエーテル))

概要

論文の詳細を見る
DME (dimethyl ether: CH_3OCH_3) is currently attracting worldwide attention because it is a clean fuel which can be synthesized from various materials such as natural gas, coal, biomass etc. But DME has the possibility of spontaneous ignition in gas turbine use because of its low auto-ignition temperature. To avoid spontaneous ignition or flash-back, a coaxial jet cluster nozzle burner configuration was proposed, which can mix air and fuel effectively within a short time. The developed full size combustor, called the multi cluster combustor for 25MW class gas turbine, was tested under practical gas turbine operating conditions from start up to base load using a full pressure combustion test rig. In the tests, LNG was also used as the test fuel because it is expected to be used as a back up fuel when DME is first introduced for wide commercial use. Test results showed good combustion performances for the developed multi cluster combustor. NOx emission level was below 20ppmv (16%O_2) and combustion efficiency was over 99.9% for the base load condition of 25MW class gas turbine when fueled with DME or LNG. No flash-back phenomena occurred throughout the tests.
一般社団法人日本エネルギー学会の論文
2005-04-20