Reactor for preparing uranium trioxide

Patent · Tue Aug 16 00:00:00 EDT 1983

OSTI ID:5521303

Ueda, K

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 barriers, 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.

• Assignee: EDB-84-013178
• Patent Number(s): US 4399106
• Application Number: TRN: 84-001259
• OSTI ID: 5521303
• Resource Relation: Patent Priority Date: Priority date 2 Sep 1980, Japan; Other Information: PAT-APPL-295999
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
36 MATERIALS SCIENCE
CHEMICAL REACTORS
DESIGN
FUEL REPROCESSING PLANTS
URANIUM TRIOXIDE
PRODUCTION
PYROLYSIS
SPENT FUELS
URANYL NITRATES
ACTINIDE COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
ENERGY SOURCES
FUELS
MATERIALS
NITRATES
NITROGEN COMPOUNDS
NUCLEAR FACILITIES
NUCLEAR FUELS
OXIDES
OXYGEN COMPOUNDS
REACTOR MATERIALS
THERMOCHEMICAL PROCESSES
URANIUM COMPOUNDS
URANIUM OXIDES
URANYL COMPOUNDS
050700* - Nuclear Fuels- Fuels Production & Properties
050800 - Nuclear Fuels- Spent Fuels Reprocessing
360201 - Ceramics
Cermets
& Refractories- Preparation & Fabrication