摘要
木材热解是木材类火灾事件的先导过程,是引起后续的阴燃、着火、燃烧和火焰蔓延等各种现象的重要因素,因此研究木材的热解非常重要。采用热重分析法对番龙眼木的热重特性及反应动力学进行研究。在空气气氛下,研究样品粒径、试验气氛和升温速率对番龙眼木热解特性的影响。对番龙眼木的热解反应过程的分析,采用Flynn-Wall-Ozawa积分法、Kissinger最大速率法和atava-esták积分法对动力学进行处理。试验得到了一些热解动力学的参数,并推断出不同温升速率下番龙眼木的动力学最概然机理方程为反应级数函数,n=4。
Thermal pyrolysis of wood is the initiation of combustion,and it is greatly related to the consequent ignition and fire growth.Therefore,it is of great importance to investigate the mechanism of pyrolysis and ignition of wood.Pyrolysis thermal characteristics and kinetics of pinnata pometia were investigated using thermogravimetric analysis by TG analysis.The effects of heating rate,the grain diameter of sample and the atmosphere on the process of pyrolysis were studied for pinnata pometia.The kinetic parameters were calculated by means of Flynn-Wall-Ozawa method,Kissinger method,and atava-esták method,respectively.The dynamic parameters of non-isothermal decomposition kinetics were obtained according to the experimental data for pinnata pometia,and the kinetics equation was found to be reaction order function with n=4.
出处
《中国安全生产科学技术》
CAS
CSCD
2013年第6期42-47,共6页
Journal of Safety Science and Technology
关键词
番龙眼木
热解
热分析
动力学
pinnata pometia
pyrolysis
thermogravimetric analysis
kinetics
