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US 4,399,106 AGranted
Reactor for preparing uranium trioxide
OwnerKimio Uedainventor
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OwnerKimio Uedainventor
Estimating the term…
Nuclear fuels, such as uranium trioxide, are prepared by thermal decomposition of a nitrate in a fluidized bed reactor. The fluidized bed reactor for preparing uranium trioxide from uranyl nitrate by thermal decomposition has (a) a rectangularly shaped bed which satisfies the critical safety shape of .sup.235 U, (b) plural holes to supply an aqueous solution of uranyl nitrate into the reactor, (c) at least two reaction rooms divided by barriages, the bottoms of the barriers being capable of being lifted to control their distance from the floor and a mechanism by which uranium trioxide powder is taken out mainly by being overflowed from the top of the barriers through the reaction rooms, (d) heating means inside and outside of the fluidized-bed, and (e) a head structure which is upwardly V-shaped. Continuous operation can be attained with ease, and uranium trioxide can be made efficiently.
A fluidized-bed reactor for preparing a nuclear fuel by heat decomposing a nitrate comprising:
A fluidized-bed reactor for preparing uranium trioxide by charging an aqueous solution of uranyl nitrate into the reactor, decomposing the nitrate by heating to form uranim trioxide powder with liberation of nitric acid, and removing the powder and nitric acid from the reactor, said fluidized-bed reactor comprising (a) a parallelepiped-shaped bed which satisfies the critical safety shape of .sup.235 U, (b) a plurality of holes for supplying said aqueous solution into the reactor, (c) at least two reaction rooms and a mechanism for removing uranium trioxide powder from the reactor by overflowing it through said at least two reaction rooms, (d) heating means inside and outside of said fluidized-bed, and (e) an outlet which enlarges outwardly.
Dependencies are inferred from the claim text.