Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – For radioactive reactant or product
Patent
1996-01-11
1996-12-31
Warden, Robert J.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
For radioactive reactant or product
422186, 422233, 422903, 219679, 219691, 219701, 219738, 20415743, 20415751, G21G 500
Patent
active
055891403
ABSTRACT:
A continuous denitration apparatus capable of ensuring mass processing of a nitrate solution of a nuclear fuel and a continuous stable operation. By a rotation of screws, uranium nitrate solution supplied from a liquid feed inlet is continuously conveyed. A trough is divided into a concentration zone, a denitration zone and a drying zone. Microwaves emitted from a microwave incident inlet pass through a microwave permeable part provided in a critical shield plate for covering the upper part of the trough and are applied to the uranium nitrate solution of high concentration and high viscosity, conveyed by the screws. The uranium nitrate solution is denitrated to prepare a denitrated product (uranium trioxide). This denitrated product is dried in the drying zone to obtain powder to be discharged from an outlet. The deposition adhering to the screws in the concentration zone can be exfoliated by moving the microwave permeable part a little to the concentration zone side to prevent a blocking of the rotation of the screws. In the drying zone, local heating by the microwaves can be prevented.
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Doryokuro Kakunenryo Kaihatsu Jigyodan
Tran Hien
Warden Robert J.
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