核燃料后处理厂溶解废气中放射性碘吸附材料的研究与应用  

Research and Application of Adsorbents for Removing Radioiodine from Dissolver off-Gas in Nuclear Fuel Reprocessing Plant

作　　者：梁飞[1] 李永国[1] 张计荣[1] 乔太飞[1] 王坤俊[1] 吴波[1] 张群[1] 

机构地区：[1]中国辐射防护研究院,山西太原030006

出　　处：《中国辐射卫生》2015年第4期423-426,共4页Chinese Journal of Radiological Health

摘　　要：目的探讨核燃料后处理厂各种碘吸附材料的吸附性能与影响因素的关系。方法通过对国内外近年来在去除后处理厂溶解废气中放射性碘的研究与应用情况进行分析,给出今后研究方向。结果镀银多孔固体材料吸附技术应用较广,且都具有良好的除碘性能。此外,镀银丝光沸石在线老化后仍可再生,镀银硅胶吸附碘后能直接转化为放射性固体废物而被长期储存。结论由于银的价格较高,无银吸附剂及有机多孔吸附材料经开发后将更具有工程应用前景。Objective The relationship of influence factors and adsorption properties of adsorbents were discussed. Methods Future resarch dirctons were given by reviewing the research and application of adsorbents for removing radioiodine from dissolver off- gas in nuclear fuel reprocessing plant. Results It shows that the silver- based adsorbents have better capability for removing radioiodine and are the currently preferred sorbents. Furthermore,in- process of aging,silver- exchanged mordenites have an advantage of possible generation to save cost and reduce radioactive waste. Silver- functionalized silica aerogels are suitable for direct conversion to waste form for long- term storage. Conclusion But their primary disadvantage is costliness of silver,therefore non- silver- based adsorbents and organic porous sorbent will have broad application future by development for iodine removal from dissolver off- gas（ DOG） streams of nuclear fuel reprocessing plant.

关 键 词：放射性碘 银交换沸石 DOG VOG 

分 类 号：R143[医药卫生—公共卫生与预防医学]