摘要:
There is provided a vaporizer that can be used for a long period of time without being clogged and can supply a raw material stably to a reaction section. The evaporator includes a dispersion section 8 having a gas passage 2 formed in a dispersion section body 1, a gas introduction port 4 for introducing a pressurized carrier gas 3 into the gas passage 2, means 6 for supplying a raw material solution 5 to the gas carrier passing through the gas passage 2, a gas outlet 7 for sending the carrier gas containing the dispersed raw material solution 5 to a vaporization section 22, and means 18 for cooling the gas passage 2; and the vaporization section 22 for heating and vaporizing the carrier gas in which the raw material solution is dispersed, having a vaporization tube 20 connected to the reaction section of an apparatus and the gas outlet 7 of the dispersion section 8, and a heater 21 for heating the vaporization tube 20, and is characterized in that the pressure of the reaction section is set lower than the pressure of the vaporization tube.