Heat Treatment of Irradiated Graphite in an Oxidizing Atmosphere

E. V. Bespala, A. O. Pavlyuk, S. G. Kotlyarevskii, I. Yu Novoselov, Yu R. Bespala

Research output: Contribution to journalArticle

Abstract

It was demonstrated that thermal treatment and decontamination methods can be used for the processing of irradiated nuclear graphite. Special features of the treatment of the irradiated graphite surface with an oxidizing agent were considered. A mathematical model of the interaction of a gaseous oxidizing agent with irradiated graphite was described with consideration for the release of stored Wigner energy. It was established that the qualitative and quantitative compositions of gaseous reaction products depend on thermal and gas-dynamic process conditions. The mathematical models and calculation algorithms proposed can be used for the process optimization of the heat treatment of irradiated graphite for the selective recovery of a number of radionuclides (mainly, 14C and 36Cl), which are concentrated in a thin near-surface layer of graphite components.

Original languageEnglish
Pages (from-to)328-335
Number of pages8
JournalSolid Fuel Chemistry
Volume52
Issue number5
DOIs
Publication statusPublished - 1 Sep 2018

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Graphite
Heat treatment
Oxidants
Mathematical models
Decontamination
Gas dynamics
Reaction products
Radioisotopes
Recovery
Processing
Chemical analysis

Keywords

  • graphite combustion
  • heat treatment
  • irradiated graphite
  • oxidizing agent
  • stored energy

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology

Cite this

Bespala, E. V., Pavlyuk, A. O., Kotlyarevskii, S. G., Novoselov, I. Y., & Bespala, Y. R. (2018). Heat Treatment of Irradiated Graphite in an Oxidizing Atmosphere. Solid Fuel Chemistry, 52(5), 328-335. https://doi.org/10.3103/S0361521918050026

Heat Treatment of Irradiated Graphite in an Oxidizing Atmosphere. / Bespala, E. V.; Pavlyuk, A. O.; Kotlyarevskii, S. G.; Novoselov, I. Yu; Bespala, Yu R.

In: Solid Fuel Chemistry, Vol. 52, No. 5, 01.09.2018, p. 328-335.

Research output: Contribution to journalArticle

Bespala, EV, Pavlyuk, AO, Kotlyarevskii, SG, Novoselov, IY & Bespala, YR 2018, 'Heat Treatment of Irradiated Graphite in an Oxidizing Atmosphere', Solid Fuel Chemistry, vol. 52, no. 5, pp. 328-335. https://doi.org/10.3103/S0361521918050026
Bespala, E. V. ; Pavlyuk, A. O. ; Kotlyarevskii, S. G. ; Novoselov, I. Yu ; Bespala, Yu R. / Heat Treatment of Irradiated Graphite in an Oxidizing Atmosphere. In: Solid Fuel Chemistry. 2018 ; Vol. 52, No. 5. pp. 328-335.
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