| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas introduction nozzle of a coated fuel particle manufacturing equipment for a high-temperature gas-cooled reactor which makes it possible to easily remove SiC deposit generated during forming third coating layer consisting of SiC around the nozzle opening and to reuse. SOLUTION: The gas introduction nozzle comprises a tray shape nozzle body fitted in the bottom of a reaction vessel and constituting at least a part of the middle part of the reaction vessel bottom, a plurality of gas introduction paths penetrating the tray shape nozzle body and opening to a predetermined position in the reaction vessel bottom, and a cylindrical gas inlet piece supplying coating stuff gas to the gas introduction paths connecting to the ends of gas supply pipes extending from a coating stuff gas supply source outside the reaction vessel to the reaction vessel in the back side of the nozzle body in fitting state with the reaction vessel bottom. In the specific region including the surrounding of the opening of the gas introduction path on the reaction vessel bottom of the nozzle body, a graphite coating layer is formed. COPYRIGHT: (C)2007,JPO&INPIT
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