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Pyrolysis of Softwood Carbohydrates in a Fluidized Bed Reactor
Laboratory of Industrial Chemistry and Reaction Engineering, Process Chemistry Centre, Åbo Akademi University, FI-20500 Åbo/Turku, Finland
Laboratory of Wood and Paper Chemistry, Process Chemistry Centre, Åbo Akademi University, FI-20500 Åbo/Turku, Finland
Laboratory of Inorganic Chemistry, Process Chemistry Centre, Åbo Akademi University, FI-20500 Åbo/Turku, Finland
* Author to whom correspondence should be addressed.
Received: 6 May 2008; in revised form: 24 July 2008 / Accepted: 15 August 2008 / Published: 2 September 2008
Abstract: In the present work pyrolysis of pure pine wood and softwood carbohydrates, namely cellulose and galactoglucomannan (the major hemicellulose in coniferous wood), was conducted in a batch mode operated fluidized bed reactor. Temperature ramping (5°C/min) was applied to the heating until a reactor temperature of 460 °C was reached. Thereafter the temperature was kept until the release of non-condensable gases stopped. The different raw materials gave significantly different bio-oils. Levoglucosan was the dominant product in the cellulose pyrolysis oil. Acetic acid was found in the highest concentrations in both the galactoglucomannan and in the pine wood pyrolysis oils. Acetic acid is most likely formed by removal of O-acetyl groups from mannose units present in GGM structure.
Keywords: Pyrolysis; cellulose; galactoglucomannan; pine; fluidized bed reactor; bio-oil
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MDPI and ACS Style
Aho, A.; Kumar, N.; Eränen, K.; Holmbom, B.; Hupa, M.; Salmi, T.; Murzin, D.Y. Pyrolysis of Softwood Carbohydrates in a Fluidized Bed Reactor. Int. J. Mol. Sci. 2008, 9, 1665-1675.
Aho A, Kumar N, Eränen K, Holmbom B, Hupa M, Salmi T, Murzin DY. Pyrolysis of Softwood Carbohydrates in a Fluidized Bed Reactor. International Journal of Molecular Sciences. 2008; 9(9):1665-1675.
Aho, Atte; Kumar, Narendra; Eränen, Kari; Holmbom, Bjarne; Hupa, Mikko; Salmi, Tapio; Murzin, Dmitry Y. 2008. "Pyrolysis of Softwood Carbohydrates in a Fluidized Bed Reactor." Int. J. Mol. Sci. 9, no. 9: 1665-1675.