| 摘要 |
<p>PROBLEM TO BE SOLVED: To keep sludge unapt to adher or deposit in a reprocessing process of a nuclear fuel and enable the promotion of solution reaction by forming an inner face of a bottom part of a dissolver main body on a curved face and sending fluid from a fluid introducing tube toward a curved face of the bottom part. SOLUTION: An inner face of a bottom part of a dissolver main body 1 is formed on a curved face. Nitride solution is filled in the dissolver main body 1, irradiated fuel is changed, and the whole dissolver main body 1 is heated. With heating, a gas supply unit 4 is operated, and gas is sent toward a curved face of the bottom part 2 by a gas introducing tube 3. The sent gas flows along a curved face of the bottom part 2, and the solution near the bottom part 2 is flowed upwardly. At this time, a sludge floating in the solution or a sludge to be laminated on the bottom part 2 flows upwardly with gas and solution, and the sludge is hardly laminated on the bottom part 2. The solution is stirred by flowing of the solution generated when the fluid is sent, the opportunity of contact with fuel and nitride is enhanced, and dissolution reaction is promoted.</p> |
