Effect of repairing refractory material of main reactor in steam reforming system

Kijima, Jun; Koyama, Hayato; Owada, Mitsuhiro; Hagiwara, Masayoshi; Aoyagi, Yoshitaka

JAEA-Technology 2022-012, 14 Pages, 2022/07

JAEA-Technology-2022-012.pdf:1.51MB

Steam reforming system has been developed for the treatment of organic wastes which are not suitable materials (halogenated oil) for the incineration due to generation of corrosive compounds and plugging materials. The refractory material is cast inside the main reactor, which is a part of the steam reforming system. Since the surface of this refractory material has deteriorated over time, the main reactor was replaced. If the refractory material surface of the used main reactor can be repaired, the used main reactor can be reused as a spare. The refractory material surface was repaired using two types of repair materials ("S" and "P"). Combustion tests were conducted on samples simulating organic wastes to evaluate each repair material. As a result of the combustion test, it was concluded that the repair of the main reactor was possible to use the repair material "P" because no cracks or flakes were observed.

Development of steam reforming system for treatment of difficult-to-treat organic liquid wastes, 1; Progress of technology development for fluorine oil treatment with steam reforming system

Owada, Mitsuhiro; Koyama, Hayato; Kijima, Jun; Shibata, Atsuhiro

no journal, , 

Japan Atomic Energy Agency (JAEA) has been developing a steam reforming system and equipment for the treatment of difficult-to-treat organic liquid wastes. In the continuous treatment of fluorine oil, soot generated during fluorine oil decomposition clogs the exhaust filter and causes unstable combustion. The influence of soot was evaluated by conducting treatment tests using the mixing ratio of fluorine oil and auxiliary fuel as parameters and checking the effect of decomposition temperature. As a result, the filter was not blocked at fluorine oil concentrations up to 20%, and increasing the decomposition temperature burns off the soot and reduces the blockage of the filter. The effects of equipment corrosion due to long-term continuous processing were also identified as an issue.