Nitrogen Trifluoride-Based Fluoride- Volatility Separations Process: Initial Studies

McNamara, Bruce K. ; Scheele, Randall D. ; Casella, Andrew M. ; Kozelisky, Anne E.

Pacific Northwest National Laboratory (U.S.)

关键词: Oxidizers;    Fluorination;    Fluorides;    Kinetics;    Thermodynamics;   

DOI  :  10.2172/1028579
RP-ID  :  PNNL-20775
RP-ID  :  AC05-76RL01830
RP-ID  :  1028579

美国|英语

来源: UNT Digital Library

【 摘 要 】

This document describes the results of our investigations on the potential use of nitrogen trifluoride as the fluorinating and oxidizing agent in fluoride volatility-based used nuclear fuel reprocessing. The conceptual process uses differences in reaction temperatures between nitrogen trifluoride and fuel constituents that produce volatile fluorides to achieve separations and recover valuable constituents. We provide results from our thermodynamic evaluations, thermo-analytical experiments, kinetic models, and provide a preliminary process flowsheet. The evaluations found that nitrogen trifluoride can effectively produce volatile fluorides at different temperatures dependent on the fuel constituent.