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Report No.

R&D on thermochemical IS process for hydrogen production at JAEA

Onuki, Kaoru; Kubo, Shinji  ; Terada, Atsuhiko  ; Iwatsuki, Jin ; Takegami, Hiroaki ; Okuda, Hiroyuki; Kasahara, Seiji  ; Tanaka, Nobuyuki ; Imai, Yoshiyuki  

Japan Atomic Energy Agency has been conducting R&D on thermochemical water-splitting Iodine-Sulfur (IS) process for hydrogen production. Closed-cycle operation of the process was demonstrated for one week with hydrogen production rate of about 30NL/h. Components in H$$_{2}$$SO$$_{4}$$ section were designed featuring a heat exchanger made of silicon carbide. Flowsheet process analysis is now in progress. For higher thermal efficiency, a Bunsen reactor and an EED cell are investigated. Vapor-liquid equilibrium of HI-H$$_{2}$$O-I$$_{2}$$ for high pressure is measured.



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