两步法高效含氚净化水空气载带系统研究  

Study on High Efficiency Tritium-containing Purified WaterAir Carrier System Based on Two-step Method

作　　者：程文龙[1] 许张敏 年永乐 赵锐 陈华 CHENG Wenlong;XU Zhangmin;NIAN Yongle;ZHAO Rui;CHEN Hua(School of Engineering Science,University of Science and Technology of China,Hefei 230027,China;School of Automotive and Transportation Engineering,Hefei University of Technology,Hefei 230009,China)

机构地区：[1]中国科学技术大学工程科学学院,安徽合肥230027 [2]合肥工业大学汽车与交通工程学院,安徽合肥230009

出　　处：《原子能科学技术》2024年第5期1160-1168,共9页Atomic Energy Science and Technology

基　　金：国家自然科学基金(52376153)。

摘　　要：针对现有含氚净化水空气载带技术排放效率低、环境适应性差的问题,提出一种基于溴化锂制冷驱动溶液除湿和高效雾化加湿的两步法含氚净化水空气载带系统,搭建了载带量大于2 t/d的试验样机,并在不同工况下开展了载带实验研究。结果显示:试验样机在空气温度3~50℃、空气相对湿度0~90%的环境工况下可安全、高效地排放含氚净化水,试验样机在典型工况、高湿工况、高温工况下,载带量分别为100.8、119.9、96.0 kg/h,与一步法相比,载带量分别提升了298.4%、508.6%、60.0%。这表明,基于两步法的含氚净化水空气载带系统可大幅拓宽含氚净化水安全排放的环境适应范围,且排放效率较高,可为含氚净化水的排放应用提供参考。With the development of nuclear industry technology,the use of nuclear fuel is gradually increasing and the amount of produced spent fuel is increasing.During the reprocessing process of spent fuel,a large amount of low concentration tritium-containing purified water is generated.China’s backup spent fuel reprocessing plants are established in inland areas and use air carrying emission technology with certain shortcomings such as limited increase in air carrying capacity,and the air after carrying may experience re-condensation due to temperature and humidity imbalance,resulting in environmental pollution.In response to the low emission efficiency and poor environmental adaptability of the existing tritium-containing purified water air carrier technology,which could not effectively meet the practical needs of spent fuel reprocessing development,a two-step air carrier tritium-containing purified water system was proposed in this paper based on LiBr refrigeration drive solution dehumidification and efficient humidification.A prototype of the two-step tritium-containing purified water air carrier system was established with carrier capacity larger than 2 t/d,and its operational characteristics under different conditions were systematically studied based on the criteria of safety and efficient discharge.The results show that no condensation phenomenon occurs at the outlet of the carrier air,indicating that the experimental prototype is able to safely and efficiently discharge tritium-containing purified water under environmental conditions of air temperature ranging from 3℃to 50℃and air relative humidity ranging from 0 to 90%.Under the standard condition with an air temperature of 22℃and air relative humidity of 47%,the carrier capacity of the experimental prototype is 100.8 kg/h,which is 298.4%higher than the one-step method.Under the high relative humidity condition with an air temperature of 25℃and air relative humidity of 90%,the carrier capacity of the experimental prototype is 119.9 kg/h,which is 508.

关 键 词：含氚净化水 空气载带 溶液除湿 溴化锂制冷 雾化加湿 

分 类 号：TL941.1[核科学技术—辐射防护及环境保护]