A study of surface pretreatment of tritium-getter alloy for enhancement of insensitiveness to impurities

氚吸气合金表面预处理增强杂质不敏感性的研究

• 批准号: 10680473
• 负责人: FUKADA Satoshi
• 金额: $ 2.11万
• 依托单位: KYUSHU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1998
• 资助国家: 日本
• 起止时间: 1998 至 1999
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10680473/
• 关键词: tritium; zirconium alloy; fusion fuel cycle; alkali pretreatment; water vapor cracking; methane cracking; impurity; hydrogen storage; Zr_2Fe; Zn(Mni-xFex)_2; 燃料精製システム; 不純物被素; 水素貯蔵合金

Some zirconium-alloy getters are expected to be used for tritium separation, purification and storage in a fuel cycle of a nuclear fusion reactor. We have been investigated particle beds of Zr, ZrCo, ZrNi and ZrィイD22ィエD2Fe which can recover the tritium concentration in gas streams lower than the maximum permissible level for the radioisotope in Japan. However, once tritium-getters contact with any of the gaseous impurities such as OィイD22ィエD2, HィイD22ィエD2O and CO, they lose most of their hydrogen capacities. Based on our previous experimental studies on mass-transfer processes in alloy beds, new surface pretreatment techniques in order to enhance insensitiveness to impurities were tested with their keeping the high absorption capacity. The three surface pretreatment techniques are (1) alkali pretreatment, (2) pd depositing (3) Cu depositing. In 1998 we comparatively investigated the surface pretreatment to the ZrィイD22ィエD2Fe getter, and its hydrogenating rate after the alkali pretreatment was enhanced about ten times faster than that of the non-treated getter. It was found that pretreated ZrィイD22ィエD2Fe particles under the room temperature can absorb tritium less than the detection limit. In 1999, methane and tritium water vapor cracking by a Zr(MnィイD20.5ィエD2FeィイD20.5ィエD2)ィイD22ィエD2 bed was experimentally investigated. Methane at higher than 650ィイD1゜ィエD1C and water vapor at 350ィイD1゜ィエD1C were successfully cracked by the Zr(MnィイD20.5ィエD2FeィイD20.5ィエD2)ィイD22ィエD2 bed. Results obtained in the present study have been presented at the international symposium of the fusion nuclear technology and that of the hydrogen energy and have been also reported to international journals.

预计将使用一些锆 - 铝制捕获器用于Zr，Zrco，Zrni和Zr II D22 Yi D2FE的颗粒层，该层可以在日本h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h h he h h h h h h h h h h s gas cropt诸如O -I D22 Yi D22 Yi D2O和CO之类的气态杂质，它们基于我们的氢化功能，以增强其氢化功能。 （2）PD沉积（3）CU沉积在1998年，我们比较表面预处理ZR ZR ZR D22 YIE D2FE Getter，其碱性预处理后的氢化速率增强了大约十倍的速度检测极限。 .5 I D20.5 I D2）Lei D22床。

项目成果

S. Morimitsu, S. Fukada, et al.: "Experimental Study on Hydrogen-Absorbing Alloy Heat-Pump Working in the High Temperature Region"Proc. of the 5th Korea-Japan Joint Symposium '99 on Hydrogen Energy, Yusong in Korea. 77-82 (1999)

S. Morimitsu，S. Fukada，等：“吸氢合金热泵在高温区工作的实验研究”Proc。

S. Fukada et al.: "Hydrogen Isotope Separation with Palladium Particle Bed"Fusion Engineering Design. 39-40. 995-999 (1998)

S. Fukada 等人：“钯粒子床氢同位素分离”聚变工程设计。

H. Fujiwara and S. Fukada: "Hydrogenating Rates of Twin Columns Packed with Pd and Molecular Sieve with an Alternately Countercurrent Flow for Hydrogen Isotope Separation"International Journal of Hydrogen Energy. 25. 127-132 (2000)

H. Fujiwara 和 S. Fukada：“用于氢同位素分离的交替逆流流动的填充有钯和分子筛的双柱的氢化速率”国际氢能杂志。

S. Fukada et al: "A Study on Particle Beds of LaNi, LaNi_< 2> and LaNi_< 3> for Purification of Hydrogen Isotopes"Proc. of the 4th Inter. Conf on New Energy System and Conversions. 59-64 (1999)

S. Fukada 等：“用于纯化氢同位素的 LaNi、LaNi_<2> 和 LaNi_<3> 颗粒床的研究”Proc.

S.Fukada et al.: "Zr_2Fe and Zr(Mn_<0.5>Fe_<0.5>)_2 Particle Beds for High Purification of Tritium and Impurity Removal in a Fuel Cycle"Proc.The fifth International Symposium on Fusion Nuclear Technology. 印刷中. (2000)

S. Fukada 等人：“Zr_2Fe 和 Zr(Mn_<0.5>Fe_<0.5>)_2 粒子床用于燃料循环中氚的高纯化和杂质去除”论文集，第五届国际聚变核技术研讨会正在出版。 (2000)