Characterisation and model fitting kinetic analysis of coal/biomass co-combustion

被引：94

作者：

Wang, Guangwei ^{[1
]}

Zhang, Jianliang ^{[1
]}

Shao, Jiugang ^{[1
]}

Ren, Shan ^{[2
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Met & Ecol Engn, Beijing 100083, Peoples R China

[2] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China

来源：

THERMOCHIMICA ACTA | 2014年 / 591卷

基金：

中国国家自然科学基金;

关键词：

Biomass; Co-combustion; Kinetics model; Thermogravimetric analysis; FLUID-SOLID REACTIONS; RANDOM PORE MODEL; COAL; COMBUSTION;

D O I：

10.1016/j.tca.2014.07.019

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The combustion behaviors of biomass, coal and their blends were studied by thermogravimetric analysis. Combustion parameters such as ignition, burnout, peak rate, ignition index, and combustibility index were analyzed. The kinetic parameters were optimized based on experimental results by a double parallel reactions random pore model (DRPM) proposed in this paper. The results show that the combustion characteristic temperature of the biomass is lower and maximum rate of combustion is higher than that of anthracite coal. With the increase of biomass content, ignition temperature and burnout temperature of blends tended to decrease, while the ignition index and combustibility index increased. Compared with the original RPM model, the DRPM model could not only describe the combustion process with a single peak rate, but also the combustion of biomass-coal blends with two rate peaks. The combustion activation energies of blends were extracted by DRPM model in the present study. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：68 / 74

页数：7

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