The present invention is a body in which the incineration chamber is formed; A fuel supply unit for supplying fuel to the incineration chamber; A burner provided on the body to incinerate the fuel supplied to the fuel supply unit; A vaporization unit formed on the upper side of the body, wherein a plurality of drying tubes in communication with the incineration chamber are formed, and a vaporization chamber in which the liquid is circulated to the outside and above the drying tube to be vaporized into steam; A blower provided on the lower side of the body to blow air into the incineration chamber; A flue through which the incinerated gas is discharged by communicating with the upper side of the drying tube; And An incineration steam boiler comprising a discharge unit provided above the vaporization unit and collecting and discharging vapor vaporized in the vaporization chamber by heat of the incineration chamber transmitted to the drying tube, and a power generation device using the same.
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