共去污单元脉冲萃取柱模型及计算机模拟  

Computer Simulation of the Extraction Behavior and Modeling of Pulsed Extraction Column Used in Co-Decontamination Process

作　　者：于婷[1] 何辉[2] 陈延鑫[2] 唐洪彬[2] 彭力[2] 王立京[3] 

机构地区：[1]中国科学院上海应用物理研究所,上海201800 [2]中国原子能科学研究院放射化学研究所,北京102413 [3]中国原子能科学研究院劳动人事教育处,北京102413

出　　处：《核化学与放射化学》2014年第4期222-228,共7页Journal of Nuclear and Radiochemistry

基　　金：大厂重大专项资助项目(后处理流程各工艺单元数学模型和计算软件研制)(2010ZX06203-01)

摘　　要：在扩散模型的基础上,对共去污单元脉冲萃取柱"切片"数学处理,建立了数学模型,模型中添加了多组分共存分配比计算模块,编写完成了可用于模拟计算共去污单元脉冲萃取柱萃取HNO3、U(Ⅵ)、Pu(Ⅳ)稳态计算程序。利用文献报道的实验数据,对程序进行了验证。结果表明,程序模拟计算的各组分稳态浓度剖面与实测值符合良好,程序可以实现共去污单元多组分共萃的模拟计算。并在此基础上,利用该程序对1A脉冲萃取柱工艺设计进行了初步研究计算。结果表明,脉冲萃取柱的萃取效率与处理料液组分浓度有关,以往一级混合澄清槽等于若干米脉冲柱的设计方法认识有所偏差,应使用计算机模拟方法整体设计脉冲萃取柱。Based on the dispersion model, sliced the pulsed extraction column, a new model and algorithm have been proposed, and a computer program is established in order to simulate the steady-state behavior of HN03, U （ Ⅵ ）, Pu （ Ⅳ ） in the co-decontamination process. The model included the partition coefficient calculation module. The reliability of the simulation was verified by the reported parameters. It was found that the mathematical model and algorithm could simulate the multi-component extraction. The column process design was analyzed. It was found that the extraction efficiency was affected by the component concentration of the liquid. The equivalence of a single mixer-settler stage to a certain length of pulsed extraction column that was widely accepted for pulsed extraction column design seems not accurate enough. The pulsed column should be integrally designed by using a computer simulation program.

关 键 词：脉冲萃取柱 共去污段 多组分共萃 计算机模拟 

分 类 号：TL241.14[核科学技术—核燃料循环与材料] TP391.9[自动化与计算机技术—计算机应用技术]