Hydrogen production by thermochemical water-splitting IS process utilizing heat from high-temperature reactor HTTR

Sakaba, Nariaki; Kasahara, Seiji; Ohashi, Hirofumi; Sato, Hiroyuki; Kubo, Shinji; Terada, Atsuhiko; Nishihara, Tetsuo; Onuki, Kaoru; Kunitomi, Kazuhiko

Proceedings of 16th World Hydrogen Energy Conference (WHEC-16) (CD-ROM), 11 Pages, 2006/06

High-temperature reactors (HTRs) are particularly attractive due to their wide industrial application from electricity generation to hydrogen production. The Japan Atomic Energy Agency's (JAEA's) HTTR, which is the first HTR in Japan, attained its maximum reactor-outlet coolant temperature and successfully delivered 950C coolant helium outside its reactor vessel. A hydrogen production system based on the thermochemical water-splitting iodine sulphur (IS) process is planned to be connected to the HTTR in the near future. This will establish the hydrogen production technology with an HTR, including the system integration technology for connection of hydrogen production system to HTRs. It will probably be the world's first demonstration of hydrogen production directly using heat supplied from an HTR. The HTTR-IS system design was launched from a conceptual design in 2005. This paper shows the summary of the HTTR, plan for developing the IS process in JAEA, thermal efficiency evaluation for the HTTR-IS system, etc. The verification of the hydrogen production by the HTTR-IS system by using heat from a nuclear reactor is greatly expected to contribute to the commercialization of nuclear hydrogen in coming hydrogen society.

Environmental Research and Development

ishihara, kaoru

Saikuru Kiko Giho, (26), 0 Pages, 2005/00

https://rdreview.jaea.go.jp/gihou/pdf3/n26-19.pdf

We carried out reflection seismic and multi-offset VSP surveys at JNC Shobasama-site to develop the investigation technique in the granite area, and evaluated the applicability of these geophysical methods. As the result of this study, we consider that a) It is possible to infer the existence of the lower angle fracture zone in the granite by reflection seismic survey and b) Multi-offset VSP supplements the result of reflection seismic survey and it is possible to infer the distribution of the fracture zone in deeper area in the granite.

Environmental preservation technology development

Ishihara, kaoru

Saikuru Kiko Giho, (23), 0 Pages, 2004/00

https://rdreview.jaea.go.jp/gihou/pdf2/n23-21.pdf

In the general condition report, among the environmental preservation technology developments decommissioning technology development (construction of abolition measures of smelting conversion facilities, abolition measures of uranium enrichment facilities, and dismantlement engineering system) and mine mark measures

Research and development of HTTR hydrogen production systems

Shiozawa, Shusaku; Ogawa, Masuro; Inagaki, Yoshiyuki; Onuki, Kaoru; Takeda, Tetsuaki; Nishihara, Tetsuo; Hayashi, Koji; Kubo, Shinji; Inaba, Yoshitomo; Ohashi, Hirofumi

Proceedings of 17th KAIF/KNS Annual Conference, p.557 - 567, 2002/04

The research and development program on nuclear production of hydrogen was started on January in 1997 as a study consigned by Ministry of Education, Culture, Sports, Science and Technology. A hydrogen production system connected to the HTTR is being designed to be able to produce hydrogen of about 4000 m3/h by steam reforming of natural gas, using a nuclear heat of 10 MW supplied by the HTTR. In order to confirm controllability, safety and performance of key components in the HTTR hydrogen production system, the facility for an out-of-pile test was constructed on the scale of approximately 1/30 of the HTTR hydrogen production system. Essential tests are also carried out to obtain detailed data for safety review and development of analytical codes. Other basic studies on the hydrogen production technology of thermochemical water splitting called an iodine sulfur (IS) process, has been carried out for more effective and various uses of nuclear heat. This paper describes the present status and a future plan on the R&D of the HTTR hydrogen production systems in JAERI.

Present status of research on hydrogen energy and perspective of HTGR hydrogen production system

Miyamoto, Yoshiaki; Ogawa, Masuro; Akino, Norio; Shiina, Yasuaki; Inagaki, Yoshiyuki; Shimizu, Saburo; Onuki, Kaoru; Ishiyama, Shintaro; Katanishi, Shoji; Takeda, Tetsuaki; et al.

JAERI-Review 2001-006, 147 Pages, 2001/03

JAERI-Review-2001-006.pdf:9.2MB

no abstracts in English

Developments of nuclear heat utilization systems for high-temperature gas-cooled reactor in JAERI

Miyamoto, Yoshiaki; Shiozawa, Shusaku; Akino, Norio; Ogawa, Masuro; Hada, Kazuhiko; Shiina, Yasuaki; Shimizu, Saburo; Inagaki, Yoshiyuki; Onuki, Kaoru; Fumizawa, Motoo; et al.

Proc. of 9th Annual U. S.Hydrogen Meeting, p.367 - 369, 1998/00

no abstracts in English