Skip to Main content Skip to Navigation
New interface
Theses

Transferts de masse aux interfaces agitées électromagnétiquement : application au retraitement de déchets nucléaires

Abstract : Reductive extraction is one of the most promising pyroprocess for processing spentnuclear fuel. The extraction of elements from a molten salt to a liquid metal occurs athigh temperature. At the interface between the two immiscible flows mass transfersare ensured via a redox reaction. To increase these transfers, electromagnetic forcescan be used to stir the bulk of both phases and of the interface itself without materialcontact.The kinetic of extraction of three lanthanides (cerium, neodymium and samarium)has been experimentally studied. We worked on lithium fluoride/antimony system,the reducing agent being lithium. Theses experiments show that mass transfers arefast for all studied lanthanides and are controlled by diffusion of reactive species atthe interface.The numerical simulation of experimental reactor which involves many stronglycoupled phenomenon has been performed. Turbulent flows have been computed inboth phases. Mass transfers have then been deduced and compared to experimentalresults.
Document type :
Theses
Complete list of metadata

https://tel.archives-ouvertes.fr/tel-00947353
Contributor : ABES STAR :  Contact
Submitted on : Saturday, February 15, 2014 - 2:57:20 PM
Last modification on : Saturday, November 5, 2022 - 3:58:26 AM
Long-term archiving on: : Thursday, May 15, 2014 - 11:36:09 AM

File

pdf2star-1380031294-23020_COUR...
Version validated by the jury (STAR)

Identifiers

  • HAL Id : tel-00947353, version 1

Collections

Citation

Cyril Courtessole. Transferts de masse aux interfaces agitées électromagnétiquement : application au retraitement de déchets nucléaires. Autre. Université de Grenoble, 2012. Français. ⟨NNT : 2012GRENI098⟩. ⟨tel-00947353⟩

Share

Metrics

Record views

185

Files downloads

687