Application of infrared spectrometer on-line monitoring and analyzing method in uranium fluoride volatility process

NIU Yongsheng; SUN Lixin; HU Congwei; ZHANG Huanqi; DOU Qiang; WU Guozhong; LI Qingnuan

doi:10.11889/j.0253-3219.2014.hjs.37.110601

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Application of infrared spectrometer on-line monitoring and analyzing method in uranium fluoride volatility process

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- Application of infrared spectrometer on-line monitoring and analyzing method in uranium fluoride volatility process
  封面论文
- NUCLEAR TECHNIQUES Vol. 37, Issue 11, Article number: 110601(2014)
- 作者机构：
  
  中国科学院上海应用物理研究所嘉定园区,上海,201800
- 作者简介：
- 基金信息：
- DOI：10.11889/j.0253-3219.2014.hjs.37.110601
  CLC：
- Published：07 November 2014
- 稿件说明：
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NIU Yongsheng, SUN Lixin, HU Congwei, et al. Application of infrared spectrometer on-line monitoring and analyzing method in uranium fluoride volatility process[J]. Nuclear techniques, 2014, 37(11): 110601
DOI：

NIU Yongsheng, SUN Lixin, HU Congwei, et al. Application of infrared spectrometer on-line monitoring and analyzing method in uranium fluoride volatility process[J]. Nuclear techniques, 2014, 37(11): 110601 DOI： 10.11889/j.0253-3219.2014.hjs.37.110601.

摘要

高温氟化挥发技术是分离回收乏燃料中易裂变材料铀的干法分离技术。本研究建立了基于红外光谱技术的高温氟化挥发工艺中气相产物在线检测的技术。利用此技术发现在UF4氟化挥发反应过程中，除了UF6之外，还有MoF6、UO2F2和HF的生成。根据这些产物相对浓度随反应进程的变化，讨论了它们可能的来源。实验工作表明红外光谱技术不仅能够用于高温氟化挥发工艺中氟化反应过程的在线监测和研究，而且可以通过装置结构材料腐蚀产物MoF6、UF6水解产物UO2F2和HF的在线检测进一步优化工艺流程。

Abstract

Background: High temperature fluoride volatility process (HFVP) is an important pyroprocessing method for separating and recovering fissile material uranium from the spent fuel. Purpose: The goal of this work is to establish an on-line measurement technique for gaseous products. Methods: We established this technique based on infrared spectrometer in HFVP. Results: It was found that during the UF4 fluoride volatility reaction process

in addition to UF6

there were MoF6

UO2F2 and HF formation. The possible source of those compounds was analyzed according to their concentrations during the reaction process. Conclusion: The results in HFVP showed that infrared spectroscopy may be expected to be used not only for on-line monitoring of the process

but also for optimizing the process through on-line detecting MoF6 from corrosion of structure material and UO2F2 and HF from hydrolysis of UF6. Abstract

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Related Institution

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