Journal
BIORESOURCE TECHNOLOGY
Volume 102, Issue 3, Pages 3451-3456Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.biortech.2010.10.120
Keywords
Pyrolysis kinetics; Cyclone furnace; Ramie residue; Equivalence ratio
Funding
- National Natural Science Foundation of China [20876066]
- Hubei Province Scientific and Technological Project [2007AA204B01]
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The thermal decomposition behavior of ramie residue (RR) and the characteristics of fuel gas produced in a cyclone furnace were studied. The pyrolysis kinetics was investigated using thermogravimetric analysis (TGA) at heating rates of 5-20 degrees C/min. The results showed that RR mainly decomposed between 250 and 390 degrees C, and the apparent activation energy ranged from 200 to 258 kJ/mol. In the cyclone furnace, fast pyrolysis, partial combustion and gasification occurred almost simultaneously, and the thermal energy was supplied by partial combustion of RR powder at the hypo stoichiometric amount of air. Higher effect of equivalence ratio (ER) led to higher reaction temperature and fewer contents of tar and char, but too high ER lowered fuel gas content and degraded fuel gas quality. Over the ranges of the experimental conditions, the gas yield varied between 1.07 and 2.08 N m(3)/kg and the LHV was between 3350 and 4798 kJ/N m(3). (C) 2010 Elsevier Ltd. All rights reserved.
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