基于MPMS计算模型的PUREX 1B流程模拟研究  

Study on PUREX 1B Process Simulation Based on MPMS Calculation Model

作　　者：汤嘉 杨雨 林铭章[2] 鲁芸芸[1] 熊伟[1] 郭子方 吴志豪 Tang Jia;Yang Yu;Lin Mingzhang;Lu Yunyun;Xiong Wei;Guo Zifang;Wu Zhihao(Nuclear Power Institute of China,Chengdu,610213,China;School of Nuclear Science and Technology,University of Science and Technology of China,Hefei,230026,China)

机构地区：[1]中国核动力研究设计院,成都610213 [2]中国科学技术大学核科学与技术学院,合肥230026

出　　处：《核动力工程》2022年第2期102-107,共6页Nuclear Power Engineering

摘　　要：为模拟铀钚氧化还原萃取(PUREX)的U/Pu分离流程(简称1B流程),以多级混合澄清槽为萃取设备,以化学反应体系和经验萃取体系为基础,基于MPMS计算模型框架建立了以NH_(3)OH^(+)-N_(2)H_(4)(HAN-HYD)作为还原萃取剂的1B流程数学模型。通过对比文献数据,验证了模型的有效性。应用该数学模型探究了某低流速高酸洗涤液在特定参数条件下的1B流程中发挥的效应,结果表明该低流速高酸洗涤液的引入会降低U/Pu回收率。为进一步评估不同条件下低流速高酸洗涤液对1B流程分离效率和回收效率的影响,通过改变模型中低流速高酸洗涤液的工艺参数获得不同的U/Pu分离效果。计算结果表明,在不引入低流速高酸洗涤液的条件下,1B流程能获得最优的U/Pu分离效率。该数学模型将为基于多级混合澄清槽的1B流程工艺评估和预测等提供有益帮助。In order to simulate the U/Pu separation(1B)process of uranium plutonium redox extraction(PUREX),a mathematical model of 1B process with NH_(3)OH^(+)-N_(2)H_(4)(HAN-HYD)as reducing extractant was established based on the framework of MPMS calculation model,using multi-stage mixer-settler as extraction equipment,and based on the chemical reaction system and empirical extraction system.The validity of the model is verified by comparing with the literature data.The mathematical model is applied to explore the effect of a low flow rate and high acid cleaning solution in 1B process under specific parameters.The results show that the introduction of the low flow rate and high acid cleaning solution will reduce the recovery of U/Pu.In order to further evaluate the effect of low flow rate and high acid cleaning solution on the separation efficiency and recovery efficiency of 1B process under different conditions,different U/Pu separation effects were obtained by changing the process parameters of low flow rate and high acid cleaning solution in the model.The calculation results show that the optimal U/Pu separation efficiency can be obtained by 1B process without introducing low flow rate and high acid cleaning solution.The mathematical model will provide useful help for the process evaluation and prediction of 1B process based on multi-stage mixer-settler.

关 键 词：MPMS 1B流程 模拟 模型应用 

分 类 号：TL941.19[核科学技术—辐射防护及环境保护]