Thermodynamic analysis and experimental studies on chemical looping gasification of biomass with CoFe<sub>2</sub>O<sub>4</sub> as oxygen carrier

WANG Xu-feng; LIU Jing; LIU Feng

Volume 47 Issue 3

Mar. 2019

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Article Navigation > Journal of Fuel Chemistry and Technology > 2019 > 47(3): 306-311

WANG Xu-feng, LIU Jing, LIU Feng. Thermodynamic analysis and experimental studies on chemical looping gasification of biomass with CoFe2O4 as oxygen carrier[J]. Journal of Fuel Chemistry and Technology, 2019, 47(3): 306-311.

Citation:

WANG Xu-feng, LIU Jing, LIU Feng. Thermodynamic analysis and experimental studies on chemical looping gasification of biomass with CoFe₂O₄ as oxygen carrier[J]. Journal of Fuel Chemistry and Technology, 2019, 47(3): 306-311.

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Thermodynamic analysis and experimental studies on chemical looping gasification of biomass with CoFe₂O₄ as oxygen carrier

State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, China

Funds:

National Natural Science Foundation of China 51661145010

More Information

Corresponding author: LIU Jing, E-mail: liujing27@mail.hust.edu.cn
Received Date: 2018-11-09
Rev Recd Date: 2019-01-08

Available Online: 2021-01-23

Publish Date: 2019-03-10

Abstract

Abstract

The reactivity of biomass with CoFe₂O₄ oxygen carrier was investigated through thermodynamic analysis. The effects including amount of oxygen carrier, temperature and steam content on gasification characteristics of biomass were examined. Meanwhile, the reaction was experimentally investigated using thermogravimetric analysis. The phase of fresh and reacted oxygen carrier was characterized by X-ray diffraction (XRD).Thermodynamic analysis results show that CoFe₂O₄ can provide lattice oxygen and effectively improve gasification of biomass and carbon conversion efficiency. As the temperature goes up, amount of H₂ and CO increases, while CO₂ decreases. With amount of steam increases, H₂ and CO₂ yield increases while CO yield decreases. The ratio of H₂ to CO increases and high quality syngas can be obtained with the addition of steam. Thermogravimetric analysis and XRD results show that cobalt can be first reduced which can promote the further reduction of iron due to the synergistic effect. With the amount of oxygen carrier increases, reduction degree of oxygen carrier decreases. The optimal mass ratio of oxygen carrier to biomass is 0.8.
- biomass,
- chemical-looping gasification,
- CoFe₂O₄,
- thermodynamics analysis,
- thermogravimetric analysis

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References(25)

References

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