A study on the Fe–Cl thermochemical water splitting cycle for hydrogen production. (31st July 2020)

• Record Type: Journal Article
• Authors: Safari, Farid; Dincer, Ibrahim
• Is Part Of: International journal of hydrogen energy. Volume 45:Number 38(2020)
• Page Start: 18867
• Page End: 18875
• Publication Date: 2020-07-31
• Subjects: Hydrogen production -- Thermochemical cycle -- Water splitting -- Iron -- Chlorine; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2020.04.208
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: Thermochemical water splitting cycles are recognized as one of the promising pathways for sustainable hydrogen production. In the present study, Iron-chlorine (Fe–Cl) cycle as one of the chlorine family thermochemical cycles where iron chloride is consumed for hydrogen production from water, is considered for a study. This four-step cycle is modelled by Aspen Plus software package and analyzed for performance investigation of each reaction step and system's components. The parametric studies are also performed to assess the effect of operation conditions such as temperature, pressure and steam to feed ratio on the reaction products and conversion rates. Results indicated that although the effect of pressure is not significant on reaction's production rates, an increase in temperature favors oxygen production in reverse deacon reaction and magnetite production in hydrolysis and lowers hydrogen production in the hydrolysis step. On the other hand, steam to chlorine (Cl2 ) ratio is directly correlated with hydrochloric acid (HCl) and oxygen production in reverse deacon reaction and hydrogen production in hydrolysis. Graphical abstract: Image 1 Highlights: Fe–Cl thermochemical cycle as a four-step pure cycle is reviewed and discussed. The Fe–Cl cycle is modelled by Aspen Plus software package. Effects of operational parameters on system's outputs are investigated.