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Importance of Promoting Combustion of Hydrocarbons by Detritiation System in an Event of Fire at Nuclear Fusion Facility
https://repo.qst.go.jp/records/73165
https://repo.qst.go.jp/records/73165860d22a9-1bf3-445c-a338-81539505c250
| Item type | 会議発表用資料 / Presentation(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2019-01-28 | |||||
| タイトル | ||||||
| タイトル | Importance of Promoting Combustion of Hydrocarbons by Detritiation System in an Event of Fire 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_c94f | |||||
| 資源タイプ | conference object | |||||
| 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 |
岩井, 保則
× 岩井, 保則× 枝尾, 祐希× 倉田, 理江× 磯部, 兼嗣× 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 | Detritiation system is required to remove tritium from the atmosphere of a nuclear containment in any extraordinary situations. Realization of detritiation system that does not require heating of 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 on 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 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 grasped and the change in the ignition temperature by change in each design parameter of catalyst was demonstrated. Concerning on noble metal species, platinum is superior to palladium due to less susceptibility to water vapor. The smaller the particle size of noble metal, the higher the activity, 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 pore size of catalytic support. | |||||
| 会議概要（会議名, 開催地, 会期, 主催者等） | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 23rd Topical Meeting on the Technology of Fusion Energy | |||||
| 発表年月日 | ||||||
| 日付 | 2018-11-13 | |||||
| 日付タイプ | Issued | |||||
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岩井, 保則, 枝尾, 祐希, 倉田, 理江, 磯部, 兼嗣, Iwai, Yasunori, Edao, Yuuki, Kurata, Rie, Isobe, Kanetsugu, n.d., Importance of Promoting Combustion of Hydrocarbons by Detritiation System in an Event of Fire at Nuclear Fusion Facility.
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