基于稳态等温反应的碳烟燃烧活化能计算  

Determination of Activation Energy of Soot Combustion Based on Steady Isothermal Reactions

作　　者：魏少杰[1] 张业新[1,2] 苏庆运[2] 张昭良[1] 高希彦[2] 

机构地区：[1]济南大学化学化工学院,山东济南250022 [2]大连理工大学内燃机研究所,辽宁大连116024

出　　处：《济南大学学报（自然科学版）》2011年第3期248-251,共4页Journal of University of Jinan(Science and Technology)

基　　金：国家高技术研究发展计划(863)(2008AA06Z320);国家自然科学基金(21077043)

摘　　要：在固定床反应器上进行4种温度下的碳烟等温燃烧反应,计算碳烟燃烧速率,当温度升高至420℃时,燃烧速率增为0.266μmol.min-1;采用近似方法将等温碳烟燃烧动力学方程简化成线性方程,对所得燃烧速率作线性回归分析,结果得到碳烟燃烧表观活化能Ea为128.9 kJ.mol-1,接近文献报道值,表明稳态等温氧化反应可用于碳烟燃烧动力学分析。The steady isothermal reactions of soot combustion at four different temperatures were performed in a fixed-bed flow reactor,and the rates of isothermal soot combustion were obtained.With increasing temperature,the rate increases,up to 0.266 μmol·min-1 at 420 ℃.The kinetic equation of isothermal soot combustion was simplified into a linear equation using approximation method.The rates of isothermal soot combustion at various temperatures were analyzed by the linear regression with the linear equation.Hence,the apparent activation energy for soot combustion was calculated to be 128.9 kJ·mol-1,which is near to that of the literature result.The method is effective for the analysis of soot combustion kinetics.

关 键 词：活化能 稳态等温反应 碳烟燃烧 

分 类 号：O643[理学—物理化学]