Conference Proceedings Paper
SCWR CHEMISTRY ISSUES: HYDROTHERMAL STABILITY OF HYDRAZINE
The 5th International Symposium on SuperCritical Water-cooled Reactors - 2011 March 13-16
Andriy Plugatyr (Trent University)
Tina Hayward (Trent University)
Igor Svishchev (Trent University)
Hydrazine is one of the potential candidates for chemistry control for both in-core and out-of-core components of a SCWR. At present, systematic experimental data on hydrazine chemistry is mainly limited to sub-critical water conditions. Supercritical water flow-through test facility for the study of hydrothermal processes is described. The decomposition of hydrazine in aqueous solution is examined along the 25 MPa isobar. The obtained first-order rate constant for the thermal decomposition of hydrazine increases from 3.73 × 10-4 s-1 at 473 K to about 0.31 s-1 at 725 K.
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