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Hybrid solar-driven hydrogen generation by sorption enhanced–chemical looping and hydrocarbon reforming coupled with carbon capture and Rankine cycle

ONWUEMEZIE, Linus, GOHARI DARABKHANI, Hamidreza and MOGHIMI ARDEKANI, Mohammad (2023) Hybrid solar-driven hydrogen generation by sorption enhanced–chemical looping and hydrocarbon reforming coupled with carbon capture and Rankine cycle. International Journal of Hydrogen Energy. ISSN 1879-3487

Text (Our latest research results on H2 generation technologies in press in the International Journal of Hydrogen Energy.)
Revised Manuscript FINAL version.pdf - AUTHOR'S ACCEPTED Version (default)
Available under License Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0).

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Abstract or description

Hydrogen (H2) production from fossil fuels using Hydrocarbon Reforming Methods (HRM) accounts for nearly 95% of Global H2 production. Unlike hybrid CL-SR systems, the Integrated Solar-Driven Sorption Enhanced–Chemical Looping of Hydrocarbon Reforming (SE-CL-HR) utilises solar thermal energy from the CSP system to drive the endothermic decomposition of feedstocks. Furthermore, the simulated hybrid systems utilise recovered heat to generate electricity, reuse of by-product CO2 for more syngas production and CO2 capture by a reaction of CaO to form CaCO3. This work focused on modelling and simulating hybrid CSP systems and SE-CL-HR plants with HTF output temperatures between 750 - 1050°C. In this study, SAM and MATLAB are used to develop the CSP system. While the CSP result saved in the MATLAB workspace gets exported to Simulink to feed SE-CL-SMR, SE-CL-POX and SE-CL-ATR Aspen plus models. The integrated system is fed with CH4 as the working fluid of the solar furnace. Stoichiometric and Gibbs free-energy minimisation were employed to investigate the effect of operating parameters. The output of the integrated system shows ≥ 9.5% exergy efficiency in comparison to conventional HRM. In addition, CO2 capture by CaO and high-pH water (Ca, Mg, Na+, O2, OH- and Cl-) to produce CaCO3, MgCO3, and other valuable products were also investigated in a process simulation. The research results revealed that for 8.1 tons/hr of CH4 and 277.1 tons/hr of H2O (steam) flowrates, 62 tons/hr of H2 can be generated and 338.5 tons/hr of CO2 emission can be reused and captured by the adoption of these new innovative technologies.

Item Type: Article
Uncontrolled Keywords: Concentrating solar power (CSP); Steam methane reforming (SMR); Partial oxidation of methane (POM); Autothermal reforming (ATR); Sorption Enhanced–Chemical looping (SE-CL); Rankine cycle (RC)
Faculty: School of Digital, Technologies and Arts > Engineering
Depositing User: Hamidreza GOHARI DARABKHANI
Date Deposited: 22 Mar 2023 13:32
Last Modified: 11 Mar 2024 01:38

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