Quantitative measurement of beryllium-controlled redox of hydrogen fluoride in molten Flibe

Michael F. Simpson*, Galen R. Smolik, John P. Sharpe, Robert A. Anderl, David A. Petti, Yuji Hatano, Masanori Hara, Yasuhisa Oya, Satoshi Fukada, Satoru Tanaka, Takayuki Terai, Dai Kai Sze

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

29 Scopus citations

Abstract

In order to investigate the viability of using Be as a redox agent in a molten Flibe (2LiF-BeF2) blanket, a series of kinetics experiments were performed in which HF was bubbled through Flibe with varying concentrations of dissolved Be. The feed gas consisted of 910-1800 ppm HF and 0.1-0.2 vol.% H2, with the balance comprised of He. A cylindrical rod of Be was contacted with the salt for periods of time ranging from 600 to 3600 s, resulting in mole fractions in the salt ranging from 4.3 × 10-5 to 2.6 × 10-4. Initially, high HF conversion levels in excess of 90% were observed. As HF reacted with the Be, the conversion levels slowly dropped over a period of several hours to a few days. A simple kinetic model, which is first order in both HF and Be concentration has been coupled with a non-mixed reactor model to yield a good fit to the data. Application of this model indicates that Be should be suitable for keeping the TF concentration in the salt below 0.02 ppb.

Original languageEnglish
Pages (from-to)541-547
Number of pages7
JournalFusion Engineering and Design
Volume81 A
Issue number1-4
DOIs
StatePublished - 2006/02
EventProceedings of the Seventh International Symposium on Fusion Nuclear Technology ISFNT-7 Part A -
Duration: 2005/05/222005/05/27

Keywords

  • Beryllium
  • Corrosion
  • Flibe
  • Kinetics
  • Redox

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • General Materials Science
  • Mechanical Engineering

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