Pyrolysis characteristics of naked oats straw in Bashang area
In order to achieve high efficiency and clean combustion of crop straw in Bashang area,typical naked oats straw was selected as the research object to analyze the pyrolysis characteristics.The pyrolysis atmosphere environment in the combustion process was created by simulating flue gas with mixed gases.The thermogravimetric analyzer was used to study the thermogravimetric characteristics and the influence of temperature rise rate on the mixed gas atmosphere composed of air and N2,CO2,and O2 in different proportions.The AKTS software was used for kinetic analysis.The results showed that:the pyrolysis process of naked oats straw was divided into three stages,which were drying stages(30～140℃),volatilization stages(140～370℃),carbonization stages(370～900℃).Gas atmosphere mainly affected the pyrolysis of carbonization stage,drying and volatilization stage had little effect,heating rate affects volatilization and carbonization stage,the faster the heating rate,the greater the reaction rate.When the pyrolysis atmosphere was 15％O2-5％CO2-80％N2 mixed gas(gas 2),the activation energy required for pyrolysis process was the least,and the average activation energy was 139.86 kJ/mol.The results provided a certain theoretical basis for the energy utilization of biomass straw in the alpine Bashang area.
Bashang areanaked oats strawpyrolysis characteristicsactivation energy
万方数据
维普
