The development of NOx and ozon removal unit in quantum technology development facility; Bench scale test

Omura, Akiko; not registered; Hasegawa, Makoto; Tani, Satoshi

JNC is investingating the best way to treat high-level radioactive nuclear waste from reactors. For basic research into the transmutation of fission products, JNC developed a high-power CW electron linac. Therefore, on air treatment system which is one of the incidental systems for accelerator, it is also necessary to establish the technology which can deal with the current enlargement as well as other accelerator element. The bench-scale of air treatment system test was carried out for development and design of removal technology nitrogen oxides and ozone which create by driving the accelerator. In this report, the result obtained by bench-scale test is reported. Following fact was obtained by this test. (1)For the removal of NOx, coexistence of O over l.5 times of NOx is necessary at the mole ratio. So, it must be made to remain O after the shutdown of the accelerator in the inside system. (2)The NOx which is created in the accelerator room is adsorbed in the form of the nitric acid in constructional element and accelerator room wall surface. It seems to leave it with the lowering of concentration after the shutdown in the again vapor phase side again.