Smouldering of pine wood: Kinetics and reaction heats

被引：131

作者：

Anca-Couce, Andres ^{[1
]}

Zobel, Nico ^{[1
]}

Berger, Anka ^{[2
]}

Behrendt, Frank ^{[1
]}

机构：

[1] Berlin Inst Technol, Dept Energy Engn, Chair Energy Proc Engn & Convers Technol Renewabl, D-10623 Berlin, Germany

[2] BAM Fed Inst Mat Res & Testing, D-12205 Berlin, Germany

来源：

COMBUSTION AND FLAME | 2012年 / 159卷 / 04期

关键词：

Smouldering; Kinetics; TGA; Biomass; THERMOGRAVIMETRIC ANALYSIS; THERMAL-DECOMPOSITION; COMBUSTION KINETICS; BIOMASS PYROLYSIS; CELLULOSE; DEVOLATILIZATION; GASIFICATION; DEGRADATION; CHARS; FUEL;

D O I：

10.1016/j.combustflame.2011.11.015

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A kinetic model of smouldering of pine wood is determined by thermo-gravimetric analysis (TGA), describing the reactions of wood pyrolysis, wood oxidation and char oxidation. Thermo-gravimetric experiments were conducted with constant heating rates ranging from 2.5 to 10 K/min in atmospheres of pure nitrogen and mixtures of nitrogen and oxygen (with 20.5%, 8.2% and 4.3% O-2). At first wood pyrolysis and char oxidation experiments are carried out in an independent way. Then smouldering experiments are conducted, which combine the two previous reactions with wood oxidation. Finally, the heats of the reactions are determined by differential scanning calorimetry (DSC). The results are discussed, compared with the literature and the derived kinetic model is presented, which includes five components: three pseudo-components of wood - representing roughly cellulose, hemi-cellulose and lignin - as well as char and ashes. (C)2011 The Combustion Institute. Published by Elsevier Inc. All rights reserved.

引用

页码：1708 / 1719

页数：12

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