The EURO-GANEX Process: Current Status of Flowsheet Development and Process Safety Studies

Procedia Chemistry Pub Date : 2016-01-01 DOI:10.1016/j.proche.2016.10.073

Robin Taylor , Mike Carrott , Hitos Galan , Andreas Geist , Xavier Hères , Chris Maher , Chris Mason , Rikard Malmbeck , Manuel Miguirditchian , Giuseppe Modolo , Chris Rhodes , Mark Sarsfield , Andreas Wilden

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引用次数: 43

Abstract

A new hydrometallurgical grouped actinide extraction process has been developed to separate the transuranic actinide ions from dissolved spent fuel solution (after an initial uranium extraction cycle). This “EURO-GANEX” process is aimed towards the homogeneous recycling of plutonium and minor actinides in a future closed fuel cycle. The separation process is based on the co-extraction of actinides and lanthanides from aqueous nitric acid into an organic phase followed by selective co-stripping of actinides. A suitable organic phase has been formulated and distribution ratios determined for lanthanides, actinides and some problematic fission products under extraction and stripping conditions. The process flowsheet has been proven on surrogate feed solutions as well as with spent fast reactor fuel; excellent recoveries of the actinides and good decontamination factors from the lanthanides and other fission products were obtained. A variation on the EURO-GANEX flowsheet (the “TRU-SANEX” process) has now been designed to produce separate Pu+Np and Am+Cm products for heterogeneous recycling. Progress on underpinning process chemistry and safety studies as well as flowsheet tests are summarized.

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EURO-GANEX工艺:流程开发和工艺安全研究的现状

开发了一种新的湿法冶金聚锕系元素提取工艺，用于从溶解的乏燃料溶液(经过初始铀提取循环)中分离超铀锕系元素离子。这种“EURO-GANEX”工艺的目的是在未来的密闭燃料循环中均匀地回收钚和少量锕系元素。分离过程是将锕系元素和镧系元素从硝酸水溶液中共萃取到有机相，然后选择性地共剥离锕系元素。在萃取和汽提条件下，确定了镧系元素、锕系元素和一些有问题的裂变产物的合适有机相和分配比。该工艺流程已在替代进料溶液和乏快堆燃料上得到验证;从镧系元素和其他裂变产物中获得了良好的锕系元素回收率和良好的去污因子。EURO-GANEX流程(“trusanex”流程)的一个变体现在已被设计用于生产分离的Pu+Np和Am+Cm产品，用于异质回收。综述了基础工艺化学和安全性研究以及工艺流程试验的进展。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Procedia Chemistry

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