title: Kinetic study of corn straw pyrolysis: comparison of two different three-pseudocomponent models.
abstract: With heating rates of 20, 50 and 100 K min(-1), the thermal decomposition of corn straw samples (corn stalks skins, corn stalks cores, corn bracts and corn leaves) were studied using thermogravimetric analysis. The maximum pyrolysis rates increased with the heating rate increasing and the temperature at the peak pyrolysis rate also increased. Assuming the addition of three independent parallel reactions, corresponding to three pseudocomponents linked to the hemicellulose, cellulose and lignin, two different three-pseudocomponent models were used to simulate the corn straw pyrolysis. Model parameters of pyrolysis were given. It was found that the three-pseudocomponent model with n-order kinetics was more accurate than the model with first-order kinetics at most cases. It showed that the model with n-order kinetics was more accurate to describe the pyrolysis of the hemicellulose.
authors.affiliation: School of Energy Science and Engineering, Harbin Institute of Technology, 92, West Dazhi Street, Harbin 150001, PR China. green@hit.edu.cn
authors.forename: Zhengqi
authors.initials: Z
authors.lastname: Li
authors.forename: Wei
authors.initials: W
authors.lastname: Zhao
authors.forename: Baihong
authors.initials: B
authors.lastname: Meng
authors.forename: Chunlong
authors.initials: C
authors.lastname: Liu
authors.forename: Qunyi
authors.initials: Q
authors.lastname: Zhu
authors.forename: Guangbo
authors.initials: G
authors.lastname: Zhao
mesh_terms: D018533:Biomass; D003198:Computer Simulation; D017745:Incineration / Q000379:methods*; D007700:Kinetics; D008956:Models, Chemical; D018547:Plant Stems / Q000378:metabolism*; D012037:Refuse Disposal / Q000379:methods*; D003313:Zea mays