Weibull mixture model for isoconversional kinetic analysis of biomass oxidative pyrolysis
In this work, the possibility of applying the weighted sum of three cumulative Weibull distribution functions for the fitting of the kinetic conversion data of biomass oxidative pyrolysis has been investigated. The kinetic conversion data of the thermal decomposition of olive oil solid waste in oxygen atmosphere for different heating rates have been analyzed. The results have shown that the experimental data can be perfectly reproduced by the general fitting function. Therefore, it is possible to obtain the corresponding conversion rate values of biomass oxidative pyrolysis by differentiating directly the fitted kinetic conversion data. Additionally, the logistic mixture model has been applied to the same experimental data. It can be found that the newly proposed function can provide a better fit of the data than the logistic mixture model. Based on the fitting of Weibull mixture model, the kinetic triples (E, A and f(a)) of oxidative pyrolysis of olive solid waste were obtained by means of Friedmans differential isoconversional method.
Weibull mixture model logistic mixture model nonisothermal kinetics thermogravimetric analysis (TGA)
J.M.Cai S.Y.Chen
School of Agriculture and Biology, Shanghai Jiao Tong University, P.R.China School of Mechanical Engineering, Shanghai Jiao Tong University, P.R.China
国际会议
西安
英文
1036-1041
2009-07-11（万方平台首次上网日期，不代表论文的发表时间）