Evaluation of iron-based chemical looping for hydrogen production from biomass using combined power cycle with carbon capturing and storage

Abstract

The current article presents a thorough thermodynamic analysis of a unique multigeneration system where it is capable of hydrogen production with carbon capturing and storage (CCS). The system produces electrical power by integrating combined Brayton and Rankine cycles to maximize efficiency, while the solar system generates the required thermal energy input. The system aims to produce methane through the biomass pyrolysis of propylene. Additionally, the system uses a series of reactors within its iron-based chemical looping process to produce hydrogen, while simultaneously capturing and storing carbon dioxide, which aims to increase the overall sustainability of the system. The study further includes comprehensive energy and exergy analyses of all system components and an evaluation of the system's overall performance. The metrices used to evaluate the system's performance are primarily the overall energy and exergy efficiencies along with various production and capture rates. The results show that the overall system energy efficiency is 27%, while the corresponding exergy efficiency is 25%. Also, the hydrogen production rate and carbon dioxide capture rate achieved by the system are 10.5 kg/s and 1120 kg/s, respectively.