A distillation column for hydrogen isotope removal from liquid lithium

M. Christenson, C. Moynihan, David N Ruzic

Research output: Contribution to journalArticle

Abstract

Recovery of tritium from plasma-facing components in fusion devices will be vital to future full-scale operation. Liquid, low-Z materials have demonstrated many inherent advantages over solid first wall materials. To this end, a thermal treatment method in the form of a distillation column for extraction of hydrogen isotopes from liquid lithium has been designed, developed, and constructed at the Center for Plasma-Material Interactions at the University of Illinois at Urbana-Champaign. Use of induction heating and lithium condensation stages are the two qualities that set this design apart from other thermal treatment systems. Induction heating capabilities were modeled using the COMSOL Multiphysics software, which were validated when commissioning the physical heater module. Proof-of-concept tests were performed in the prototype column, which were undertaken as batch processes to investigate the efficacy with which the column could remove hydrogen gas from lithium-rich and lithium hydride-rich samples. All of the tests reported used lithium hydride as a surrogate for lithium deuteride and lithium tritide. The design process and results from the initial tests will be discussed, along with the envisioned placement of this treatment scheme in a fully-functional lithium loop.

Original languageEnglish (US)
Pages (from-to)81-87
Number of pages7
JournalFusion Engineering and Design
Volume135
DOIs
StatePublished - Oct 2018

Fingerprint

Distillation columns
Lithium
Isotopes
Hydrogen
Liquids
Induction heating
Hydrides
Heat treatment
Plasmas
Facings
Tritium
Beam plasma interactions
Condensation
Fusion reactions
Gases
Recovery

Keywords

  • Distillation
  • Lithium
  • Plasma-facing component
  • Reclamation
  • Recovery
  • Tritium

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

Cite this

A distillation column for hydrogen isotope removal from liquid lithium. / Christenson, M.; Moynihan, C.; Ruzic, David N.

In: Fusion Engineering and Design, Vol. 135, 10.2018, p. 81-87.

Research output: Contribution to journalArticle

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