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Report No.
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Test-fabrication of hydrogen iodide decomposer for IS process

Iwatsuki, Jin ; Noguchi, Hiroki  ; Kubo, Shinji  ; Kasahara, Seiji  ; Tanaka, Nobuyuki ; Takegami, Hiroaki ; Onuki, Kaoru; Inagaki, Yoshiyuki

The Japan Atomic Energy Agency has been conducting R&D on IS process for the future hydrogen energy system. The basic technique for the closed-cycle hydrogen production has been developed and a membrane process is under study for the efficient hydrogen production. Presently, main efforts are devoted to examine the integrity of components made of industrial materials screened by corrosion tests in the IS process environments. So far, fabrication of HI decomposer as key component of the HI decomposition section was completed. Test-fabricated HI decomposer has a performance to produce hydrogen for 150 NL/h, and maximum pressure is 0.95 MPa, maximum temperature is 500$$^{circ}$$C. The components are consisted of triple structure, pressure vessel, outer tube, and inner tube. In order to secure corrosion-resistance, alloy C-276 as corrosion-resistant material was used for component.

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