Reactor for preparing uranium trioxide

Patent · Tue Aug 16 04:00:00 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
• OSTI ID: 5521303
• Country of Publication: United States
• Language: English

Related Subjects

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