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Effects of Pyrolysis Conditions on Gasification Reactivity and Methods Acquiring Kinetic Parameters of Isothermal Gasification for Biomass Char
Biomass gasification is a key point in the research of biomass utilization. Biomass gasification process includes biomass pyrolysis and char gasification. Different char with different reactivity will be made by different pyrolysis process for the biomass. The kinetic parameters of different chars produced by different pyrolysis conditions are not the same. This paper summarized the effects of pyrolysis conditions on gasification activity of biomass char. At the same time based on Arrhenius formula, two methods acquiring kinetic parameters of isothermal gasification for biomass char were described. The first method is to obtain the kinetic parameters by selecting the structure factor f(x) of kinetic model, and the second method is to obtain the kinetic parameters by avoiding the selection the structure factor f(x) of kinetic model. Finally, based on Simple Collision Theory new methods obtaining kinetic parameters of isothermal gasification for biomass char was put forward to present the obvious physical meaning of the index terms, and the pre-exponential factor A of Arrhenius formula. Methods acquiring kinetic parameters of isothermal gasification based on Simple Collision Theory are similar to these acquiring kinetic parameters of isothermal gasification based on Arrhenius formula.
HAO Zhen-hua , WANG Xiao-han , ZENG Xiao-jun , WU Yong . Effects of Pyrolysis Conditions on Gasification Reactivity and Methods Acquiring Kinetic Parameters of Isothermal Gasification for Biomass Char[J]. Advances in New and Renewable Energy, 2015 , 3(1) : 14 -20 . DOI: 10.3969/j.issn.2095-560X.2015.01.003
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