摘要
国内外较为普遍地应用浸渍活性炭吸附去除放射性碘,最常用的浸渍剂是碘化钾和三乙撑二胺,能有效提高活性炭吸附去除放射性甲基碘的效率。而浸渍剂三乙撑二胺将活性炭除碘性能提高的同时,也会由于其浸渍含量的不同而不同程度地降低活性炭的着火点,另外三乙撑二胺的解吸和高温分解也会影响到浸渍活性炭的除碘性能。考虑到三乙撑二胺的挥发损失,为保证活性炭浸渍后的除碘效率,推荐采用真空干燥三乙撑二胺浸渍的活性炭。鉴于三乙撑二胺浸渍剂的固有缺陷,建议深入开展浸渍剂替代品的研究。
It is popular for the impregnated carbon to be used to adsorb the radioiodine. TEDA and KI are usually used as impregnants to improving the adsorbing-radioiodine efficiency of activated carbon. It maybe results in reducing the ignition temperature of impregnated activated carbon with TEDA. The efficiency of activated carbon maybe degrades for trapping the radioiodine due to the desorption and decomposion of TEDA. It is optimal to dry the impregnated activated carbon in vacuum condition. It is recommended that TEDA reagent replacement research should be started.
出处
《核安全》
2016年第1期71-75,共5页
Nuclear Safety
关键词
气态流出物
放射性碘
活性炭
浸渍剂
着火点
解吸
gaseous effluents
radioactive iodine
activated carbon
impregnant
ignition temperature
desorption
