生物质焦CO2高温气化反应动力学研究

doi:10.3969/j.issn.1673-5854.2017.06.007

Abstract

Abstract: The kinetics of biomass char CO₂ gasification reactivity at high temperature was investigated via the temperature-programmed thermogravimetry with thermal analyzer, the influence of heating rates on gasification reactivity was studied and the kinetic parameters were calculated by Friedman-Reich-Levi method. The results showed that along with the increase of heating rate, the peak temperature of DTG curves and the maximum reaction rates increased. With carbon dioxide as shielding gas, changing the heating rate to 15 ℃/min, pyrolysis biomass char owned the best reactivity. The higher the heating rate was, the more obvious the reaction rate changed with the temperature. The activation energies of biomass char gasification stage were -4 984.41-1 408.39 kJ/mol, which indicated biomass char CO₂ gasification reaction process was complicated.

Key words: biomass particles, carbon dioxide, temperature-programmed thermogravimetry, gasification, thermal analysis kinetics, Friedman-Reich-Levi method

CLC Number:

TQ35
TK6

YUAN Congcong, WANG Yudong, ZHANG Dingchuan, YANG Bin, DAI Yongnian. Kinetic Study on Biomass Char CO₂ Gasification at High Temperature[J]. bce, 2017, 51(6): 38-42.

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Kinetic Study on Biomass Char CO₂ Gasification at High Temperature

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Kinetic Study on Biomass Char CO2 Gasification at High Temperature

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Kinetic Study on Biomass Char CO₂ Gasification at High Temperature