To provide an evaporation superheater which can increase the recovery efficiency of the calorie in the exhaust gas and reduce the use of the fuel to be added while reducing the thermal burden of an evaporation part.
The evaporation part 1 changes the flow-in fluid 5 to the gas 6 of about 100°C. An superheating part 2 superheats the gas 6 and raises the temperature to about 250°C. In the evaporation part 1, a mixture of the gas 3 containing oxygen with the fuel 4 is allowed to flow therein to form a heat source for evaporation. In the superheating part 2, the fuel 7 is mixed in the exhaust gas to form a heat source for superheating. A branch pipe 11 is disposed between the evaporation part 1 and the superheating part 2, and a throttle valve 8 is disposed on the atmosphere emission side. The exhaust gas from the evaporation part 1 is partly emitted into the atmosphere (the exhaust gas 9), and the remaining part flows into the superheating part 2, and then, is emitted in the atmosphere (the exhaust gas 10).
YAGI KATSUKI
HIRAI ETSURO
