Scaled up Process Report – Apparatus and Model
Advanced voloxidation with NO2 is a proposed process for used nuclear fuel head-end reprocessing scheme that converts UO2 to higher oxides, and it also converts partitioning volatile fission products into the gas phase, thus facilitating fuel dissolution and actinide recovery. NO2 voloxidation is being studied on small batches of UO2 Simfuel, but the real test of process feasibility will be when it is scaled up to work with >100 g of irradiated material. This report discusses the aspects of scale-up that must be considered for NO2 voloxidation, including development of a stirred reactor to promote agitation of the mixture during processing, online process monitoring, and automation controls. Brief details on parallel efforts are also provided in this report, including (a) demonstration of iodine release from Simfuel made by Spark Plasma Sintering, and (b) development of an order-of-magnitude scale-up to react 100 g of UO2 Simfuel in a metal reactor.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE)
- DOE Contract Number:
- AC05-00OR22725; DOE-NE43
- OSTI ID:
- 2234356
- Report Number(s):
- ORNL/TM-2023/3134
- Country of Publication:
- United States
- Language:
- English
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