Development of chemical reactors for thermo-chemical water-splitting IS process

Iwatsuki, Jin ; Terada, Atsuhiko  ; Noguchi, Hiroki  ; Ishikura, Shuichi; Takahashi, Toshio*; Hino, Ryutaro

The Japan Atomic Energy Agency has been proceeding design works on a pilot test plant of 30Nm/hr-scale hydrogen production by using thermo-chemical water splitting process by iodine and sulfur (IS process) to contribute future hydrogen economy using high-temperature gas-cooled reactors. In parallel to the design works, key engineering issues on corrosion-resistant pipelines and its sealing using dish-type springs were examined under high temperature conditions. This paper introduces experimental results of heat cycle test results of a glass-lining pipe and seal performance using dish-type springs which works as thermal expansion absorber of bolts.