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Int. J. Mol. Sci. 2008, 9(9), 1665-1675; doi:10.3390/ijms9091665
Article

Pyrolysis of Softwood Carbohydrates in a Fluidized Bed Reactor

1, 1, 1, 2, 3, 1 and 1,*
Received: 6 May 2008 / Revised: 24 July 2008 / Accepted: 15 August 2008 / Published: 2 September 2008
(This article belongs to the Special Issue Biofuels R&D: Securing the Planet's Future Energy Needs)
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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 Pyrolysis; cellulose; galactoglucomannan; pine; fluidized bed reactor; bio-oil
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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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.

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