To provide a waste oil combustion device capable of stably and efficiently burning waste oil and made compact compared to a conventional waste oil combustion device.
This waste oil combustion device includes: a waste oil supply nozzle 11 for injecting waste oil; a supplementary firing fuel supply nozzle 12 for injecting supplementary firing fuel; a mixing pipe 13 arranged coaxially with the waste oil supply nozzle 11 and covering the waste oil supply nozzle 11 and the supplementary firing fuel supply nozzle 12; an air supply means 14 for supplying air from one end 13a toward the other end 13b of the mixing pipe 13; an approximately hemispherical vaporization cup 15 provided on the other end 13b side of the mixing pipe 13 coaxially with the waste oil supply nozzle 11, vaporizing and burning the waste oil fuel injected from the mixing pipe 13 and diverting combustion gas from the axial direction of the waste oil supply nozzle 11; and an outer cylinder 17 covering the mixing pipe 13 and the vaporization cup 15 and having an exhaust nozzle 16 for injecting combustion gas.
Seiji Iga
Toshiya Fujii
Nobuhiro Noguchi
Yusei Atsuya
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