4.7 Article

Numerical investigation and thermodynamic analysis of syngas production through chemical looping gasification using biomass as fuel

Journal

FUEL
Volume 246, Issue -, Pages 466-475

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.fuel.2019.03.007

Keywords

Biomass gasification; Chemical looping gasification; Syngas production; Dynamic model; Thermodynamic analysis

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Chemical looping gasification (CLG) is an innovative technology for the thermochemical conversion of biomass to produce high quality synthesis gas. In this study, a one-dimensional transient model considering partial oxidation of fuels and iron-steam reaction for biomass CLG fuel reactor was developed and validated against the experimental study utilizing Fe2O3 as oxygen carrier (OC) and microalgae as fuel. The simulation results and the experimental data are in good agreement in terms of the detailed time-varying outlet gas species concentrations, gas yield, carbon conversion efficiency, and gasification efficiency. The effects of different operating temperature and steam flow on the gasification performance are also well predicted by the adopted reaction mechanisms. Energy and exergy analyses are applied to evaluate the energy sources based on the validated model, which demonstrates that the presence of OC can enhance both the quantity and quality of the valuable syngas.

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