Characteristics of Zhundong coal in chemical looping combustion with natural hematite as oxygen carrier

GE Hui-jun; SHEN Lai-hong; GU Hai-ming; SONG Tao; JIANG Shou-xi

Volume 44 Issue 2

Feb. 2016

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Article Navigation > Journal of Fuel Chemistry and Technology > 2016 > 44(2): 184-191

GE Hui-jun, SHEN Lai-hong, GU Hai-ming, SONG Tao, JIANG Shou-xi. Characteristics of Zhundong coal in chemical looping combustion with natural hematite as oxygen carrier[J]. Journal of Fuel Chemistry and Technology, 2016, 44(2): 184-191.

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GE Hui-jun, SHEN Lai-hong, GU Hai-ming, SONG Tao, JIANG Shou-xi. Characteristics of Zhundong coal in chemical looping combustion with natural hematite as oxygen carrier[J]. Journal of Fuel Chemistry and Technology, 2016, 44(2): 184-191.

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Characteristics of Zhundong coal in chemical looping combustion with natural hematite as oxygen carrier

Southeast University, Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, Nanjing 210096, China

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Corresponding author: Tel: +86-25-5771 4489, E-mail: lhshen@seu.edu.cn
Received Date: 2015-09-14
Rev Recd Date: 2015-11-16

Available Online: 2022-03-23

Publish Date: 2016-02-01

Abstract

Abstract

The characteristics of high-sodium Zhundong coal in chemical looping combustion (CLC) as well as the migration of sodium upon combustion were investigated in a fluidized-bed reactor with natural hematite as the oxygen carrier, in order to mitigate the severe slagging and fouling problems and enhance the utilization efficiency of Zhundong coal.The results indicated that the carbon conversion and reaction rate for Zhundong coal in CLC were evidently higher than those of other coals at 850-1 000℃; aluminosilicate Na₂O·Al₂O₃·6SiO₂ of high melting point is formed in the CLC process, which is effective to mitigate the severe slagging and fouling problems.During a 10-cycle CLC test, the reactivity of hematite increases with the increase of cycle number, whereas the sodium content in the CLC fly ash is reduced.
- Zhundong coal,
- chemical looping combustion,
- slagging and fouling,
- high sodium coal,
- natural hematite,
- oxygen carrier

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References(21)

References

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