Kinetic analysis: Simultaneous modelling of pyrolysis and combustion processes of dichrostachys cinerea

被引:29
作者
Naranjo, R. Abreu [1 ]
Conesa, J. A. [2 ]
Pedretti, E. Foppa [1 ]
Romero Romero, O.
机构
[1] Univ Politecn Marche, Dipartimento Sci Alimentari Agroingn Fis Econ Agr, I-60131 Ancona, AN, Italy
[2] Univ Alicante, Dept Chem Engn, E-03080 Alicante, Spain
关键词
Dichrostachys cinerea; Biomass; Pyrolysis; Combustion; Kinetic parameters; THERMOGRAVIMETRIC ANALYSIS; DEVOLATILIZATION KINETICS; LIGNOCELLULOSIC MATERIALS; THERMAL-DECOMPOSITION; BIOMASS PYROLYSIS; WOOD; FUELS;
D O I
10.1016/j.biombioe.2011.10.032
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
The pyrolysis and combustion of Dichrostachys cinerea were studied by dynamic thermogravimetry and derivate thermogravimetry (TG-DTG) at heating rates of 5, 20 and 40 degrees C min(-1) at atmospheric pressure. For the simulation of pyrolysis processes a kinetic model including three independent parallel reactions was used, corresponding to the decomposition of the hemicelluloses, cellulose and lignin. For the combustion process, a fourth step is added for the oxidation at high temperatures of the pyrolytic residue. The was experimental thermogravimetric data of pyrolysis and combustion processes were simultaneously fitted to determine a single set of kinetic parameters able to describe both processes at the different heating rates. The model proposed achieves a good correlation between the experimental and calculated curves, with an error of less than 5% for the three heating rates. The experimental results and kinetic parameters may provide useful data for the design of a thermo decomposition processing system using D. cinerea as feedstock. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码:170 / 175
页数:6
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