摘要
[目的]考察碳化温度对水热炭热解特性的影响。[方法]采用热重法对不同碳化温度下的猪粪和牛粪水热炭的热解特性及反应动力学进行研究。[结果]水热碳化温度达到180℃时,猪粪水热炭热解DTG曲线出现2个峰,特性参数也发生显著变化,且180℃的猪粪水热炭的热解残留率最低。猪粪水热炭热解反应活化能(E)和指前因子(A)均随水热碳化温度的升高而降低,牛粪水热炭热解特性参数和动力学方程中的E和A随碳化温度的增大而增大。[结论]该研究可为猪粪水热炭的制备条件化及应用提供科学依据。
To investigate the influence of carbonization temperature on pyrolysis properties of hydrothermal carbon.[Method]The py-rolysis characteristics and reaction kinetics of swine manure and cow dung hydrochar at different carbonization temperatures were studied by ther-mal gravimetric analysis.[ Result] DTG curves of swine manure hydrochar showed two peaks when carbonization temperature was higher than 180 ℃,and the characteristic parameters also changed significantly,the char yield of biochar at 180℃was the lowest.The reaction activation en-ergy and pre-exponential factors of the pyrolysis of swine manure hydrochar were decreased with the increase of the temperature of hydrothermal carbonization,however that of the cow hydrochar were increased with the increase of the carbonization temperature.[Conclusion]The study can provide scientific basis for the preparation and application of pig manure hydrothermal carbon.
出处
《安徽农业科学》
CAS
2017年第28期61-64,共4页
Journal of Anhui Agricultural Sciences
基金
国家国际科技合作专项(2014DFE90040)
浙江省重点科技创新团队项目(2013TD12)
国家自然科学基金项目(41501341)
浙江农林大学学生科研训练项目(2013200050)
关键词
猪粪水热炭
牛粪水热炭
热重特性
热解动力学
Swine manure hydrochar
Cow dung hydrochar
Thermogravimetry characteristic
Pyrolytic kinetics
