In phase II of a feasibility study on commercialized fast reactor cycle system of Japan Nuclear Cycle Development Institute, we are finding a concept of a multi-purpose small sized fast reactor with various requirements, such as, safety and improved economical competitiveness. In this study, a membrane reforming hydrogen production plant using a small sized sodium cooled reactor was designed as one of promising concepts. In the membrane reformer, methane and steam are reformed into carbon dioxide and hydrogen with sodium heat at a temperature 500deg-C. In the equilibrium condition, steam reforming proceeds with catalyst at a temperature more than 800deg-C. Using membrane reformers, the steam reforming temperature can be decreased from 800 to 500deg-C because the hydrogen separation membrane remove hydrogen selectively from catalyst area and the partial pressure of hydrogen is kept much lower than equilibrium condition. In this study, a hydrogen and electric co-production plant has been designed. The reactor thermal output is 375MW and 25% of the thermal output is used for hydrogen production (70000Nm3/h). The hydrogen production cost is estimated but it is still higher than the economical goal. The major reason of the high cost comes from the large size of hydrogen separation reformers because of the limit of hydrogen separation efficiency of palladium membrane. A new highly efficient hydrogen separation membrane is needed to reduce the cost of hydrogen production using membrane reformers. There is possibility of multi-tube failure in the membrane reformers. In future study, a design of measures against tube failure and elemental experiments of reaction between sodium and reforming gas will be needed.
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12th International Conference on Nuclear Engineering
April 25–29, 2004
Arlington, Virginia, USA
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
0-7918-4687-3
PROCEEDINGS PAPER
System Design Study of a Membrane Reforming Hydrogen Production Plant Using a Small Sized Sodium Cooled Reactor Available to Purchase
Yoshitaka Chikazawa,
Yoshitaka Chikazawa
Japan Nuclear Cycle Development Institute, O-arai, Ibaraki, Japan
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Toru Hori,
Toru Hori
Japan Nuclear Cycle Development Institute, O-arai, Ibaraki, Japan
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Mamoru Konomura,
Mamoru Konomura
Japan Nuclear Cycle Development Institute, O-arai, Ibaraki, Japan
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Hiroyuki Sato,
Hiroyuki Sato
Mitsubishi Heavy Industries, Ltd.
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Shouji Uchida
Shouji Uchida
Advanced Reactor Technology Company, Ltd.
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Yoshitaka Chikazawa
Japan Nuclear Cycle Development Institute, O-arai, Ibaraki, Japan
Toru Hori
Japan Nuclear Cycle Development Institute, O-arai, Ibaraki, Japan
Mamoru Konomura
Japan Nuclear Cycle Development Institute, O-arai, Ibaraki, Japan
Hiroyuki Sato
Mitsubishi Heavy Industries, Ltd.
Shouji Uchida
Advanced Reactor Technology Company, Ltd.
Paper No:
ICONE12-49076, pp. 269-274; 6 pages
Published Online:
November 17, 2008
Citation
Chikazawa, Y, Hori, T, Konomura, M, Sato, H, & Uchida, S. "System Design Study of a Membrane Reforming Hydrogen Production Plant Using a Small Sized Sodium Cooled Reactor." Proceedings of the 12th International Conference on Nuclear Engineering. 12th International Conference on Nuclear Engineering, Volume 1. Arlington, Virginia, USA. April 25–29, 2004. pp. 269-274. ASME. https://doi.org/10.1115/ICONE12-49076
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