To provide a burner device for multi-fuel, capable of simultaneously burning different kinds of fuels such as liquid and gas, or a plurality of fuel gases having significantly different compositions by a single burner.
This burner device includes an outer burner nozzle 15 opened toward a throat 4, an inner burner nozzle 16, an introduction flow channel 25 formed between the inner burner nozzle and the outer burner nozzle, a plurality of rod-shaped gas burner nozzles 34 disposed inside of the inner burner nozzle, a rod-shaped oil burner 45 on a shaft center of the inner burner nozzle, and air adjustment sections 8, 9 for allowing swirl flow to flow out from the circumference of a front end section of an outer cylinder. The second fuel gas 41 is injected from the gas burner nozzles, and the tertiary air 107 from the inner burner nozzle, the first fuel gas 23 having calorie lower than the second fuel gas, from the introduction flow channel, and the secondary air 106 from the air adjustment sections are concentrically injected, thus at least the first fuel gas and the second fuel gas are simultaneously burned.
WATANABE SHINJI
ITOKAZU RYUNOSUKE
KUROSE TAKAO
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