摘要
采用热重分析仪与傅里叶红外光谱仪对城市污水污泥进行实验,考察了反应过程及逸出气体产物,求解了热解表观动力学参数。研究表明,污泥样品在N2、CO2和N2+O2气氛中分别发生的热解、气化和燃烧反应,反应过程的特征参数不同;在N2中主要热解温度范围为200~560℃,反应过程在600℃基本完成;随着升温速率增加,热解最大失重速率提高;污泥样品在N2中的热解过程依次析出H2O、CO2、CH4和CO等气体;污泥样品热解不同反应阶段具有不同反应机理和动力学参数,表观活化能在60~100 kJ/mol范围内。
An experiment was made of the urban sewage water and sludge by using a thermogravimetric analyzer and a Fourier infrared spectrum device,and its reaction process and gas products released were observed.In this connection,the solutions to the pyrolysis apparent kinetic parameters were sought.It has been found that the pyrolysis,gasification and combustion reactions occurring to the sludge sample in the N2、CO2 and N2+O2 atmosphere have different characteristic parameters in the reaction processes.The main pyr...
出处
《热能动力工程》
CAS
CSCD
北大核心
2010年第6期677-680,690,共5页
Journal of Engineering for Thermal Energy and Power
关键词
污泥
热解
热重分析
气氛
升温速率
表观动力学
sludge
pyrolysis
thermogravimetric analysis
atmosphere
temperature rise rate
apparent kinetics
