硝酸羟胺对Pu(Ⅳ)的单级还原反萃数学模型研究

Computer Simulation of Single-stage Reductive Stripping of Plutonium with Hydroxylamine Nitrate

摘要: 硝酸羟胺是Purex流程钚纯化过程的还原剂。本文建立了30%TBP/正十二烷体系中硝酸羟胺还原反萃Pu(Ⅳ)的单级迭代计算数学模型，并提出了相应的数学算法，编写了模拟连续逆流萃取器中的一级的计算机模拟程序，使用文献数据对模型和程序进行了验证。结果表明：模型计算值与文献实验值符合良好；本文模型计算结果的准确度高于文献模型。最后分析了计算时间单元长度对准确度的影响。

Abstract: Hydroxylamine nitrate is the reduction of plutonium stripping unit (2B). The simulation of one-stage of 2B was studied in this paper, a new model and algorithm on reductive stripping of plutonium with hydroxylamine nitrate from 30%TBP/n-dodecane were proposed based on iterative model, and a computer program for simulating the single stage was developed. The calculation results were compared with the data obtained from literature. The results show that the experimental results agree well with the calculation results by the model, and the accuracy of the model is better than that of literature model. The influence of time span of calculation on the accuracy was analyzed.