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Importance of Simultaneous Combustion of Tritium and Hydrocarbons by Detritiation System in a Fire Event at Nuclear Fusion Facility
https://repo.qst.go.jp/records/76605
https://repo.qst.go.jp/records/766053bed4c20-8e3b-40a2-9520-d1a557eccdb9
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-08-30 | |||||
| タイトル | ||||||
| タイトル | Importance of Simultaneous Combustion of Tritium and Hydrocarbons by Detritiation System in a Fire Event at Nuclear Fusion Facility | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Iwai, Yasunori
× Iwai, Yasunori× Edao, Yuuki× Kurata, Rie× Isobe, Kanetsugu× Iwai, Yasunori× Edao, Yuuki× Kurata, Rie× Isobe, Kanetsugu |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | A detritiation system (DS) is required to remove tritium from the atmosphere of a nuclear contain-ment in any extraordinary situations. Realization of a DS that does not require heating of a catalyst reactor for tritium oxidation and frequent switching operation of adsorption columns for tritiated vapor collection will greatly contribute to the improvement of fusion safety. Concerning the catalyst reactor, it has been demonstrated that tritium can be oxidized at room temperature without any heating by the developed hydrophobic catalyst. To achieve a high tritium conversion efficiency for detritiation, it has already been revealed that suppression of production of tritiated hydrocarbons by hydrogenation reactions as side reactions of tritium oxidation in a catalyst reactor is the key issue to be solved. We have to pay special attention to ethylene among hydrocarbons because ethylene is easily tritiated by reaction of hydrogenation. In this study, complete combustion of ethylene at room temperature in the catalyst reactor is proposed as a measure to suppress the formation of tritiated hydrocarbons. Catalytic combustion characteristics of hydrocarbons were obtained, and the change in the ignition temperature by a change in each design parameter of the catalyst was demonstrated. Concerning noble metal species, platinum is superior to palladium due to less susceptibility to water vapor. The smaller the particle size of noble metal is, the higher the activity is, but because it is more susceptible to water vapor, the particle size of noble metal can be optimized. It was suggested that there is an optimum value for the pore size of the catalytic support. | |||||
| 書誌情報 |
Fusion Science and Technology 巻 75, 号 5, p. 399-404, 発行日 2019-04 |
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| 出版者 | ||||||
| 出版者 | Taylor and Francis | |||||
| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 1536-1055 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | 10.1080/15361055.2019.1600932 | |||||
| 関連サイト | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | https://doi.org/10.1080/15361055.2019.1600932 | |||||
