【作者】

Masamichi Koyama

【摘要】

该论文已在芬兰赫尔辛基举行的第28届CIMAC大会上发表。论文的版权归CIMAC所有。Demand of dual fuel of liquid and gas is increased in a business of the standby gas turbine generator set. In this paper, technology in Niigata Power Systems regarding to dual fueled gas turbine system will be introduced. Following two main features will be described. The first one is the general description of the gas turbine package. The package mainly includes in a generator, a reduction gear, gas turbines and dual fuel supply units. The gas turbine components are also introduced. Especially, the configurations of the dual fuel injector and the combustor are focused. The combustor is single can type having simple configurations. The liquid fuel injector has both of a pressure atomizer for the pilot and an air blast atomizer for the main fuel injection. The gas injector with several spokes is inserted from over the liquid injector and the spokes are settled in just upstream of the swirler of the air blast atomizer. So, the flow pattern is not influenced by the fuel change. As the second one, engine operating results are shown. The exhaust gas emissions are compared with liquid and gas fuel. Emissions of carbon dioxide, nitrogen oxide and smoke are decreased by gas fuel use. Smoke emission is decreased 80 % from liquid to gas. Fuel control logics and trend data are focused in when fuel changes between liquid and gas. The fuel changes within extremely short time for overshooting recovery and with low fluctuations of engine speed are realized by fully electronic fuel control. It can choose both types of the fuels for engine start up. The trend data show that it can be quickly started up within 40 seconds in case of both fuels of liquid and gas. Here, purge clank time isn’t included in case of gas fuel choice. Finally, load dumping while fuel switching is discussed. Full load dumping during fuel changing is realized with low fluctuations of engine speed. And the overshooting recovery is very short time.

【会议名称】

第28届CIMAC会议

【会议地点】

芬兰 赫尔辛基

【下载次数】

2

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