Development and Validation of a Flowsheet Simulation Model for Neptunium Extraction in an Advanced PUREX Process
Development and Validation of a Flowsheet Simulation Model for Neptunium Extraction in an Advanced PUREX Process
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DOI：
10.1080/07366299.2016.1185853
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发表时间：
2016-01-01
影响因子：
2
通讯作者：
Masters, Andrew
中科院分区：
文献类型：
--
作者：
Chen, Hongyan;Taylor, Robin;Masters, Andrew
已经开发出一种先进的普雷克斯（PUREX）流程，用于从乏核燃料中分离和回收镎。这项工作提出了一种使用离心接触器萃取镎的新流程模拟模型，其中传质采用双膜理论和线性驱动力进行建模。分配系数和镎的氧化还原反应采用已发表的模型进行建模。结果表明，在相分离区有机相和水相之间的传质影响可忽略不计。该模型应用于先前测试过的流程，其预测结果与实验结果非常吻合。
An Advanced PUREX process has been developed for separation and recycling of neptunium from spent nuclear fuel. This work presents a new flowsheet simulation model for the extraction of neptunium using centrifugal contactors, where mass transfer is modeled using two-film theory and a linear driving force. Distribution coefficients and neptunium redox reactions are modeled using published models. Mass transfer between the organic and aqueous phases in the phase separation zone is shown to have a negligible effect. The model is applied to a previously tested flowsheet and its predictions are shown to be in good agreement with the experimental results.