论文部分内容阅读
详细描述了用液体N_2O_4调节Purex流程1BP、2BP、3BP和4W 料液中Pu(Ⅲ)价态的实验结果。研究酸度、钚离子浓度、铁离子浓度和温度等因素对N_2O_4氧化调价的影响。实验结果表明,N_2O_4氧化NH_2OH、N_2H_4和Pu(Ⅲ)-N_2H_4-NH_2OH的速度很快,在实验条件下是瞬间反应;在Pu(Ⅲ)-U(Ⅳ)-N_2H_4-HNO_3体系中,钚离子有明显的催化N_2O_4氧化U(Ⅳ)的作用;模拟Purex 流程1BP、2BP和3BP料液,用2.5倍化学计算量的N_2O_4,10—15℃下20min,可以达到Pu(Ⅲ)完全氧化到Pu(Ⅳ);调价后的料液放置5d,Pu(Ⅳ)的含量没有变化。
The experimental results on the valence of Pu (Ⅲ) in liquid materials 1BP, 2BP, 3BP and 4W for Purex process with liquid N_2O_4 are described in detail. The effects of acidity, plutonium ion concentration, iron ion concentration and temperature on N 2 O 4 oxidation price adjustment were studied. The experimental results show that N 2 O 4 oxidizes NH 2 OH, N 2 H 4 and Pu (Ⅲ) -N 2 H 4 -NH 2 OH very quickly and transiently under the experimental conditions. In Pu (Ⅲ) -U (Ⅳ) -N 2 H 4 -HNO 3 system, The catalytic effect of U_ (Ⅳ) on the oxidation of Pu (Ⅲ) to Pu (Ⅲ) can be achieved by simulating the oxidation of U (Ⅳ) with N_2O_4. (Ⅳ); After the price adjustment of the liquid placed 5d, Pu (Ⅳ) content did not change.