Preliminary Report on Conversion of Uranium Hexafluoride to Uranium Dioxide in a One-step Fluid-bed Process PDF Download
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Author: I. E. Knudsen Publisher: ISBN: Category : Fluidization Languages : en Pages : 32
Book Description
A one-step, continuous, fluid-bed process for the conversion of uranium hexafluoride to uranium dioxide was successfully carried out in preliminary experiments in a 1 1/2-inch-diameter Monel reactor. Hydrogen and steam were used for simultaneous reduction and pyrohydrolysis reactions carried out at 600 deg C, resulting in the formation of a dense coating of dioxide on the starting bed of uranium dioxide. The effects of uranium hexafluoride feed rate and reactant excesses on conversion were investigated. Results of fluid-bed steam pyrohydrolysis runs on uranium tetrafluoride are also presented.
Author: I. E. Knudsen Publisher: ISBN: Category : Fluidization Languages : en Pages : 32
Book Description
A one-step, continuous, fluid-bed process for the conversion of uranium hexafluoride to uranium dioxide was successfully carried out in preliminary experiments in a 1 1/2-inch-diameter Monel reactor. Hydrogen and steam were used for simultaneous reduction and pyrohydrolysis reactions carried out at 600 deg C, resulting in the formation of a dense coating of dioxide on the starting bed of uranium dioxide. The effects of uranium hexafluoride feed rate and reactant excesses on conversion were investigated. Results of fluid-bed steam pyrohydrolysis runs on uranium tetrafluoride are also presented.
Author: I. E. Knudsen Publisher: ISBN: Category : Chemical reactions Languages : en Pages : 50
Book Description
A new, dry process for the production of uranium dioxide powder from uranium hexafluoride by fluidization and particle-coating techniques was developed. The process involves direct conversion of uranium hexafluoride to a solid, UO2F2, by hydrolysis with steam and the reduction of the UO2F2 to the dioxide by reaction with was carried out in 3-in.-diameter Monel reactors.
Author: Irving E. Knudsen Publisher: ISBN: Category : Fluidization Languages : en Pages : 34
Book Description
A fluid-bed process for the preparation of dense, spheroidal uranium dioxide particles directly from uranium hexafluoride for dispersion and compacted fuel element applications has been developed. In the process, a uranium hexafluoride is reacted with mixtures of steam and hydrogen in a bed of uranium dioxide fluidized by the reactant gases and maintained at 650 to 700 degrees C. The solid reaction products deposit as a dense layer on the surface of the bed particles. The operating procedure involves alternating periods of uranium hexafluoride feed periods of fluoride cleanup when only steam and hydrogen are fed. Product is withdrawn at the end of each cleanup period.
Author: I. E. Knudsen
Author: I. E. Knudsen
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Author: I. E. Knudsen
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Author: T. F. Connolly
Author: Irving E. Knudsen
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Author: Argonne National Laboratory