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Report No.

Heating efficiency of microwave heating direct denitration of a mixture of uranyl nitrate and plutonium nitrate

Kato, Yoshiyuki 

A mixture of plutonium nitrate and uranyl nitrate solution is co-converted to MOX by the microwave heating method developed by JAEA. The heating efficiency is very important to improve throughput or energy-saving performance in this conversion process. In this study, the efficiencies were measured using both experimental and engineering scale microwave ovens, changing the chemical form of solution and its location in the oven. In addition, the distributions of electromagnetic field strength and its absorption concentration in the solution were numerically evaluated by an electromagnetic field analysis code, MWS 2009. The experimental results could almost be explained by the numerical analyses.



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