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Study on pyrolysis characteristics and kinetics of biomass and its components
With thermogravimetric analyzer, the pyrolysis characteristics of two kinds of biomass (pine cone (PC) and corn cob (CC)) and their main mix components (neutral detergent fiber, acid detergent fiber, and strong acid detergent fiber (SADF)) extracted by Van Soest analysis were studied under three heating rates (10, 20, and 40 K/min). Similar pyrolysis trends were obtained for the two original samples (OSs) and the same mix components, but the differences of the start, end, and reaction rate peak points, the residue ratios, and even the peak numbers of the pyrolysis reaction exist. Besides, to some extent the three components (hemi-cellulose, cellulose, and lignin) have the synergistic effect. On the basis of thermogravimetric analysis, the kinetic analysis of the original samples and the SADF (seen as lignin) was performed. The novel two-step method of model sifting was applied to select the most reasonable mechanism model. Different samples have different models, but the mechanism model of the same sample barely changes under different heating rates, with the exceptions of the OS of PC and the SADF of CC. By obtaining the activation energy and frequency factor, the kinetic model expression was acquired, and then was verified to agree well with the experimental result.
Study on pyrolysis characteristics and kinetics of biomass and its components
With thermogravimetric analyzer, the pyrolysis characteristics of two kinds of biomass (pine cone (PC) and corn cob (CC)) and their main mix components (neutral detergent fiber, acid detergent fiber, and strong acid detergent fiber (SADF)) extracted by Van Soest analysis were studied under three heating rates (10, 20, and 40 K/min). Similar pyrolysis trends were obtained for the two original samples (OSs) and the same mix components, but the differences of the start, end, and reaction rate peak points, the residue ratios, and even the peak numbers of the pyrolysis reaction exist. Besides, to some extent the three components (hemi-cellulose, cellulose, and lignin) have the synergistic effect. On the basis of thermogravimetric analysis, the kinetic analysis of the original samples and the SADF (seen as lignin) was performed. The novel two-step method of model sifting was applied to select the most reasonable mechanism model. Different samples have different models, but the mechanism model of the same sample barely changes under different heating rates, with the exceptions of the OS of PC and the SADF of CC. By obtaining the activation energy and frequency factor, the kinetic model expression was acquired, and then was verified to agree well with the experimental result.
Study on pyrolysis characteristics and kinetics of biomass and its components
Xie, Huaqing (author) / Yu, Qingbo (author) / Qin, Qin (author) / Zhang, Haitao (author) / Li, Peng (author)
Journal of Renewable and Sustainable Energy ; 5 ; 013122-
2013-01-01
15 pages
Article (Journal)
Electronic Resource
English
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