Reduction of hazards from copper(I) chloride in a Cu-Cl thermochemical hydrogen production plant

► Hazards are quantified for each process of the cycle where the CuCl may be present. ► Using Cu2OCl2 to absorb CuCl vapour is the most preferable option. ► Utilization of a cooler at the outlet of the oxygen reactor is unadvisable. ► If an atomization method is used for heat recovery, the fluid should be circulated.