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JAEA Reports

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.

JAEA Reports

Treatment of waste oil with steam reforming system 2018

Sakashita, Koichi; Ishii, Naoyuki; Kijima, Jun; Aoyagi, Yoshitaka; Hagiwara, Masayoshi; Fukushima, Mineo

JAEA-Testing 2020-003, 20 Pages, 2020/07

JAEA-Testing-2020-003.pdf:1.52MB

Steam reforming method has been developed for the treatment of organic wastes which are not suitable materials (halogenated oil) for the incineration. This method consists of the gasification process in which organics are vaporized and decomposed with superheated steam and the oxidation process in which vaporized organics are decomposed by oxidizing reaction with heated air. In the gasification process, nonvolatile radionuclides are separated from vaporized waste. Therefore it can be expected that treatment of liquid waste generated from an off-gas treatment system and maintenance operation of the off-gas treatment system become easy to perform. 1,500L of waste oil contaminated with halogen, solvent and uranium was treated using the demonstration scale steam reforming system to examine the performance of the system in 2018. Results obtained this study were as follows; (1) The temperature in the steam reforming system was controlled under the self-regulation temperature. (2) The concentration of CO and NO$$_{X}$$ in the off-gas were controlled less than 100 ppm and 250 ppm respectively. (3) The gasification ratio of waste oil was more than 99%. (4) Concentration of fluorine oil in waste oil is needed to be less than 20wt% to perform stable continuance treatment.

JAEA Reports

None

Miura, Akihiko; ; ; ; ; ; Funasaka, Hideyuki

JNC TN8400 2000-001, 73 Pages, 1999/09

JNC-TN8400-2000-001.pdf:1.97MB

None

JAEA Reports

None

Miura, Akihiko; ; ; ;

PNC TN8420 98-010, 43 Pages, 1998/04

PNC-TN8420-98-010.pdf:2.01MB

None

JAEA Reports

Facility damages by the explosion

; Omori, Eiichi; Kato, Yoshiyuki; Suzuki, Hiroshi; Shimoyamada, Tetsuya; Tomiyama, Masahiro; Shimokura, Mitsuharu; Sakuraba, Terumi; Morimoto, Kyoichi; Hagiwara, Masayoshi; et al.

PNC TN8410 98-013, 1028 Pages, 1998/01

PNC-TN8410-98-013.pdf:143.04MB

None

Journal Articles

None

; ; ; ; Suto, O.;

Genshiryoku eye, 44(10), p.50 - 53, 1998/00

None

JAEA Reports

None

Hasegawa, Makoto; ; ;

PNC TN8410 92-287, 70 Pages, 1992/10

PNC-TN8410-92-287.pdf:1.77MB

None

JAEA Reports

None

; ; Hasegawa, Makoto

PNC TN8410 92-094, 36 Pages, 1992/04

PNC-TN8410-92-094.pdf:0.63MB

None

JAEA Reports

None

; ; Hasegawa, Makoto;

PNC TN8410 92-090, 38 Pages, 1992/04

PNC-TN8410-92-090.pdf:0.82MB

None

Journal Articles

None

; ; ; Takahashi, Takeshi

LASE '97, , 

None

Journal Articles

None

; ; ; *

LASE '97-High-Power Lasers and Applications, , 

None

Oral presentation

Study of deoxidization of nitrate ion from radioactive wastewater by ultraviolet rays

Shimizu, Koki; Koyama, Hayato; Hagiwara, Masayoshi

no journal, , 

no abstracts in English

Oral presentation

Study of mixture ratio of incombustible fluorine oil treatment with steam reforming system; For stable treatment of radioactive waste oil

Kanda, Naoyuki; Hagiwara, Masayoshi; Sakashita, Koichi; Kijima, Jun

no journal, , 

no abstracts in English

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