Modeling study on the biomass char gasification kinetics under CO<sub>2</sub> atmosphere: Ⅱ. Pre-exponential factor

WANG Xiao-han; SONG Qian-shi; ZENG Xiao-jun; WU Yong

Volume 45 Issue 5

May 2017

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Article Navigation > Journal of Fuel Chemistry and Technology > 2017 > 45(5): 529-536

WANG Xiao-han, SONG Qian-shi, ZENG Xiao-jun, WU Yong. Modeling study on the biomass char gasification kinetics under CO2 atmosphere: Ⅱ. Pre-exponential factor[J]. Journal of Fuel Chemistry and Technology, 2017, 45(5): 529-536.

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WANG Xiao-han, SONG Qian-shi, ZENG Xiao-jun, WU Yong. Modeling study on the biomass char gasification kinetics under CO₂ atmosphere: Ⅱ. Pre-exponential factor[J]. Journal of Fuel Chemistry and Technology, 2017, 45(5): 529-536.

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Modeling study on the biomass char gasification kinetics under CO₂ atmosphere: Ⅱ. Pre-exponential factor

WANG Xiao-han^{1, 2
,
,},
SONG Qian-shi^{1, 3},
ZENG Xiao-jun^{1, 2},
WU Yong^{1, 3}

1.
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China
2.
Key Laboratory of Renewable Energy, Chinese Academy of Sciences, Guangzhou 510640, China
3.
University of Chinese Academy of Sciences, Beijing 100049, China

Funds:

the National Natural Science Foundation of China 51276184

Received Date: 2017-01-11
Rev Recd Date: 2017-03-14

Available Online: 2021-01-23

Publish Date: 2017-05-10

Abstract

Abstract

Based on the simple collision theory (SCT), the calculation method of biomass char gasification rate was developed and the combined parameters to characterize the pre-exponential factor were found. Furthermore, some experimental tests for six acid-washed biomass chars, such as the isothermal gasification and so on, were performed under CO₂ atmosphere, using a thermo-gravimetric analyzer (TGA) over the temperature ranges of 800-1000 ℃, respectively. Through the comparison of experimental data and modeling results, it is found that a good agreement is made and the developed model equations can provide an effective guidance to clarify the general gasification law of biomass chars.
- biomass char,
- CO₂ gasification,
- simple collision theory,
- pre-exponential factor,
- modelling

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References(23)

References

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