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Pyrolysis and Kinetics Analysis of Wheat Straw Enzymolysis Residue
Received date: 2014-11-29
Revised date: 2015-01-15
Online published: 2015-04-29
The physicochemical characteristics of wheat straw and its enzymolysis residue were analyzed, and then the pyrolysis behavior of the residue was investigated with TG-FTIR. Kinetic parameters were calculated based on a mixed reaction model. Analyses illustrated that the wheat straw residue was a kind of low heating value biomass fuel which was rich in inorganic compounds, and the main organic component was lignin. TG curves showed most weight-losing of the residue occurred during the temperature range of 200oC ~ 800oC. The rate of weight-losing reached the maximum at 350oC. The pyrolysis process of the residue was similar to that of lignin and slower than that of wheat straw. It was also found that increase of heating rate resulted at higher reactivity and less remaining solid products. FTIR results showed that CH4 released during 400oC ~ 700oC, and releasing peaks of CO and CO2 occurred at temperature of 380oC, 450oC and 650oC. It was first order reaction at the lower temperature range of 200oC ~ 350oC and second order reaction at the higher range of 350oC ~ 800oC.
Key words： wheat straw; enzymolysis residue; pyrolysis; TG-FTIR
LAI Xi-rui , HUANG Yan-qin , ZHOU Zhao-qiu , YIN Xiu-li , WU Chuang-zhi . Pyrolysis and Kinetics Analysis of Wheat Straw Enzymolysis Residue[J]. Advances in New and Renewable Energy, 2015 , 3(2) : 88 -92 . DOI: 10.3969/j.issn.2095-560X.2015.02.002
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