Advances in New and Renewable Energy >
Thermo Gravimetric Analysis and Kinetics of Biomass Briquette Fuels
Received date: 2014-11-20
Revised date: 2014-12-29
Online published: 2015-04-29
To study the influence law of reaction conditions on the weightlessness characteristics of biomass briquette, the thermo gravimetric experiment is taken on three types of biomass briquettes under different atmospheres and heating rates, and a mathematical model is established to analyze the dynamic properties of biomass in air. The results show that the volatile emission rate of biomass in air is higher than that in nitrogen atmosphere. With the temperature increasing, the biomass mainly performs decomposition of cellulose, hemicellulose and lignin in nitrogen atmosphere, while it performs decomposition of the components mentioned above and combustion of their decomposition products. It is found that the biomass containing higher volatile component performs higher reactivity in comparison of the heating process of different kinds of biomass. The DTG curves of pine move to low temperature region, then to the high part with heating rate increasing from 10oC/min to 25oC/min, and the temperature with maximum weight loss rate performs the similar trend. The temperature with maximum weight loss rate is lowest at 20oC/min, and the weight loss peak is highest at 25oC/min. The dynamics analysis indicates that the thermo gravimetric properties of biomass can be adequately characterized at atmospheric condition using the two-component model, and that the numerical simulation results agree with the experimental data.
Key words： biomass; thermo gravimetric analysis; heating rate; reactivity; kinetic model
JIANG Shao-jian , HUANG Liang-yun , PENG Hao-yi , TANG Fu-qiang , YAO Kun . Thermo Gravimetric Analysis and Kinetics of Biomass Briquette Fuels[J]. Advances in New and Renewable Energy, 2015 , 3(2) : 81 -87 . DOI: 10.3969/j.issn.2095-560X.2015.02.001
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