Purex流程中氚的行为研究  

STUDY ON THE BEHAVIOUR OF TRITIUM IN PUREX PROCESS

作　　者：罗隆俊 胡怀忠[1] 孙中汉 陈永清[1] 徐锋 李晓清 章泽甫[1] 高源[1] 刘天舒 

机构地区：[1]中国原子能科学研究院放射化学研究所

出　　处：《核化学与放射化学》1996年第1期13-20,共8页Journal of Nuclear and Radiochemistry

摘　　要：研究了氚在Ｐｕｒｅｘ流程中的行为，测量了氚和ＨＮＯ３在３０％ＴＢＰ－煤油和水相之间的分配比，研究了γ辐照和铀浓度对氚分配的影响及辐照对氚在有机相中保留的影响，萃取有有机相中氚的洗涤实验表明，洗涤是一种氚在两相间重新分配的简单过程，对氚在一循环中的行为进行了台架实验，结果表明１Ａ混合－澄清槽（６级萃取，９级洗涤）中对氚的去污系数在１０＾４以上，并且氚主要集中１Ａ的萃取段。The behaviour of tritium in purex process is reported.The distribution coefficients of tritium and HNO_3 between 30% TBP-kerosene and aqueous phase are determined.The effects of γ-irradiation and uranium concentration on the distribution coefficient of tritium as well as the effect of γ-irradiation on the retention of tritium in organic solvent are studied.The scrub tests of extracting tritium from organic solvent show that scrubbing is a simple redistribution process of tritium between organic and aqueous phase.The behaviour of tritium in the lst extraction cycle is tested on bench-scale,indicating that the decontamination factor of tritium in 1A mixer-settler( 6 extraction stages and 9 scrub stages)is higher than 10￣4,and most of the tritium is in the extraction section of 1A.The tritium remained in 1AP is easy to scrub into aqueous phase with a tritium scrub mixer-settler(five stages).

关 键 词：氚 氚水 氚洗槽 PUREX流程 萃取 

分 类 号：TQ122.1[化学工程—无机化工] TL92[核科学技术—核燃料循环与材料]