Abstract
Abstract The sulphur/iodine (S/I) cycle for thermochemical hydrogen production has been investigated by General Atomic, Inc. for many years. At the Institute for Technical Thermodynamics in Aachen an alternative to the step with the highest consumption of energy and cost of this cycle—i.e. the HI concentration and decomposition—has been developed. It was proposed to decompose HI directly from liquid H 2 O-HI-I 2 solutions. Theoretical investigations have shown that this process leads to higher HI dissociation rates. A batch separation column was designed to verify the direct HI decomposition in an experimental study. The results for different concentrations and temperatures up to 220°C are presented in this paper.
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