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NRC wants input on Hermes 2 test reactor construction permit
The Nuclear Regulatory Commission is seeking input on its draft environmental assessment and draft finding of no significant impact for Kairos Power’s application to build the Hermes 2 test reactor facility in Oak Ridge, Tenn.
H. Dworschak, G. Pierini, G. Peeters, E.F. Vansant, P. De Vievre
Fusion Science and Technology | Volume 8 | Number 2 | September 1985 | Pages 2202-2205
Blanket and Process Engineering | Proceedings of the Second National Topical Meeting on Tritium Technology in Fission, Fusion and Isotopic Applications (Dayton, Ohio, April 30 to May 2, 1985) | doi.org/10.13182/FST85-A24609
Articles are hosted by Taylor and Francis Online.
A flow sheet is presented for the isolation of pure hydrogen from the gas mixture generated by the well known water-gas shift reaction Separation of the resulting gas mixture is performed on three modified selective zeolite beds. In the first trap the small amount of unreacted water is absorbed by a zeolite with a controlled porosity; CO2 cannot be absorbed because of steric hindrance due to its kinetic diameter of 0.330 nm. However, it is absorbed in a second trap almost selectively with respect to CO. The latter is finally separated from H2 in a low temperature third trap. By applying a highly integrated flow pattern with extended recycling of regeneration process streams to the reactor, the only gaseous waste stream generated is CO2. It is anticipated that this process will demonstrate a high degree of reliability and efficiency with low secondary waste generation even for highly tritiated water, since the zeolites can be prepared with pore sizes “on request” and without hydrogen atoms in their structures avoiding therefore any isotopic exchange with tritium. The preparation of these zeolites as well as other materials is described.