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Experimental study on pyrolysis property of eight kinds of biomass

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5 Author(s)
Zhi-lin Fan ; Sch. of Energy & Environ., Hohai Univ., Nanjing, China ; Jun Zhang ; Yao-ming Zhang ; Li-guo Sun
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It is well known that biomass serves as an important energy in the global energy configuration and biomass pyrolysis has become a convenient and useful technology for biomass utilization. In this view, it is essential to study the pyrolysis property of biomass. To understand the pyrolysis characteristic of biomass, pyrolysis experiments for eight different biomass samples were carried out on a pressured thermogravimetric apparatus. In the tests, several influence factors on pyrolysis were considered respectively, including the particle size, sample material, heating rate, additive species, mass proportion of additive and the pressure. The experiments results indicated that different biomass species had the similar TG or DTG curves with partial diversity existed. The pyrolysis peaked at the temperature range of 330-400 °C, with a peak weight reduction rate of 0.5-0.8 mg/K For most of the test samples, the pyrolysis process started at the temperature range of 160-240 °C and finished at the temperature range of 400-500 °C,. The test results also indicated that with the increasing of heating rate, the pyrolysis peak temperature was improved accordingly. At the same time the maximum weight reduction rate was diminished. While increasing the pyrolysis pressure, it led to the decreasing of weight reduction rate. But with the decreasing of particle size, the weight reduction rate ascended obviously. It could also be seen that introducing additives to the biomass samples could lessen the weight reduction rate of biomass and the more quantity of additives were introduced, the more obvious such adverse influence got. The results suggest that improvement of particle size, heating rate or pressure may be disadvantageous to biomass pyrolysis.

Published in:

Sustainable Power Generation and Supply, 2009. SUPERGEN '09. International Conference on

Date of Conference:

6-7 April 2009

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