| 摘要 |
PROBLEM TO BE SOLVED: To provide a manufacturing equipment of coated fuel particles for a high-temperature gas-cooled reactor comprising a reaction vessel which can maintain a favorable productivity without reducing a manufacturing quantity of coated fuel particles by maintaining a sub-criticality in coating layer forming process of fuel kernel consisting of a stuff with high uranium enrichment and ensuring a uniform fluidity in one batch manufacturing process. SOLUTION: In the manufacturing process of coated fuel particles for a high-temperature gas-cooled reactor, the reaction vessel 1 containing uranium-dioxide fuel kernel has at the upper part of gas discharge nozzle for jet-supplying coating stuff gas via a nozzle hole, a lower reaction region in funnel shape expanding upward in rectangular horizontal cross section and an upper reaction region 2 in a rectangular parallelepiped shape having a rectangular horizontal cross section connecting to the upper part of the lower reaction region. The lower reaction region 3 is partitioned with inclined inner wall surfaces positioning each in the short sides of the rectangular and nearly a fan-shaped inner wall surfaces positioning each in the long sides of the rectangular nearly in parallel to each other. The upper reaction region and the lower reaction region have the same thickness dimensions along the short side of the rectangular. COPYRIGHT: (C)2007,JPO&INPIT
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