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Title: Process for producing uranium rich compositions from uranium hexafluoride using fluid injection in the post oxidation step

Abstract

An improved process for the conversion of gaseous uranium hexafluoride to a uranium oxide rich composition in the presence of an active flame in a reaction zone is disclosed and comprises introducing a first gaseous reactant comprising a mixture of uranium hexafluoride and an oxygen-containing carrier gas and a second gaseous reactant comprising a reducing gas, the reactants being separated by a shielding gas as introduced to the reaction zone. The shielding gas temporarily separates the gaseous reactants and temporarily prevents substantial mixing and reacting of the gaseous reactants. The flame occurring in the reaction zone is maintained away from contact with the inlet introducing the mixture to the reaction zone. The process also includes introducing an oxygen-containing gas as a third gaseous reactant at a time when the uranium hexafluoride conversion to uranium oxide is substantially complete resulting in oxidizing the uranium oxide composition to a higher oxide of uranium and conversion of the residual reducing gas to its oxidized form. During the process there is practiced the improvement of introducing an atomized fluid having a high latent heat of evaporation so that the atomized fluid is enveloped or surrounded by the third gaseous reactant as it is introducedmore » into the reaction zone, and the atomized fluid enters the reaction zone without contacting the structure defining the reaction zone and at a location at about the maximum temperature of the reaction zone. 14 claims, 4 drawing figures.« less

Inventors:
Publication Date:
OSTI Identifier:
7321832
Patent Number(s):
US 4005042
Application Number:
TRN: 77-007738
Assignee:
General Electric Co.
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 2 Jul 1975
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 36 MATERIALS SCIENCE; URANIUM OXIDES; CHEMICAL PREPARATION; CHEMICAL REACTIONS; FLAMES; OXYGEN; URANIUM HEXAFLUORIDE; ACTINIDE COMPOUNDS; CHALCOGENIDES; CRYOGENIC FLUIDS; ELEMENTS; FLUIDS; FLUORIDES; FLUORINE COMPOUNDS; HALIDES; HALOGEN COMPOUNDS; NONMETALS; OXIDES; OXYGEN COMPOUNDS; SYNTHESIS; URANIUM COMPOUNDS; URANIUM FLUORIDES; 050400* - Nuclear Fuels- Feed Processing; 360201 - Ceramics, Cermets, & Refractories- Preparation & Fabrication

Citation Formats

Dada, A G. Process for producing uranium rich compositions from uranium hexafluoride using fluid injection in the post oxidation step. United States: N. p., 1977. Web.
Dada, A G. Process for producing uranium rich compositions from uranium hexafluoride using fluid injection in the post oxidation step. United States.
Dada, A G. Tue . "Process for producing uranium rich compositions from uranium hexafluoride using fluid injection in the post oxidation step". United States.
@article{osti_7321832,
title = {Process for producing uranium rich compositions from uranium hexafluoride using fluid injection in the post oxidation step},
author = {Dada, A G},
abstractNote = {An improved process for the conversion of gaseous uranium hexafluoride to a uranium oxide rich composition in the presence of an active flame in a reaction zone is disclosed and comprises introducing a first gaseous reactant comprising a mixture of uranium hexafluoride and an oxygen-containing carrier gas and a second gaseous reactant comprising a reducing gas, the reactants being separated by a shielding gas as introduced to the reaction zone. The shielding gas temporarily separates the gaseous reactants and temporarily prevents substantial mixing and reacting of the gaseous reactants. The flame occurring in the reaction zone is maintained away from contact with the inlet introducing the mixture to the reaction zone. The process also includes introducing an oxygen-containing gas as a third gaseous reactant at a time when the uranium hexafluoride conversion to uranium oxide is substantially complete resulting in oxidizing the uranium oxide composition to a higher oxide of uranium and conversion of the residual reducing gas to its oxidized form. During the process there is practiced the improvement of introducing an atomized fluid having a high latent heat of evaporation so that the atomized fluid is enveloped or surrounded by the third gaseous reactant as it is introduced into the reaction zone, and the atomized fluid enters the reaction zone without contacting the structure defining the reaction zone and at a location at about the maximum temperature of the reaction zone. 14 claims, 4 drawing figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1977},
month = {1}
}