The pyrolysis characteristics and CO2 gasification reactivity of biomass char and Shenmu coal were studied by thermogravimetric analyzer.The kinetic characteristics of biomass char and Shenmu coal were fitted by shrinking core model(SCM),homogeneous model(HM)and traditional model(TM).The results show that the initial pyrolysis temperature of biochar is lower than that of Shenmu coal,and the py-rolysis weight loss rate is higher than that of Shenmu coal.Under the gasification temperature of 1 000～1 200℃,the gasification rate of biochar and Shenmu coal coke increases with the increase of air temper-ature.Under the same gasification condition,the gasification rate of biochar coke is faster than Shenmu coal coke.The activation energy of biochar coke is 60～66 kJ/mol,and that of Shenmu coal coke is 110～128 kJ/mol respectively by fitting the trend of gasification reaction rate with the shrinking core model,homogeneous model and traditional model.
关键词
生物质炭/神木煤/CO2/气化反应性/气化动力学模型
Key words
biochar/Shenmu coal/CO2 gasification reactivity/gasification kinetics model
万方数据