Summary
Physicochemical analyses were performed on samples of torrefied wood obtained at various temperatures. The chemical structure of wood was strongly altered by this process; a reactional mechanism for this is proposed in this paper. The influence of temperature and the duration of heating were compared to find the more important factors in the process. We found that these two parameters widely affected the nature of the final product. The 3.D. surfaces enabled us to predict the operating conditions which were essential to obtain a definite product with the maximum efficiency.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Armines: Patent Fr. N0 81-16493, Eur. N0 82-40-25762, US N0 410.636: Procédé de transformation de matière ligneuse d'origine végétale et matière d'origine végétale ligneuse transformée par torréfaction
Armines: Patent Fr. N0 85-18765: Nouveau matériau lignocellulosique thermocondensé, procédé du four pour l'obtenir
Armines: Patent Fr. N0 86-14138: Procédé de fabrication d'un matériau lignocellulosique et matériau obtenu par ce procédé
ASTM 1983 a: Standard test method for alcohol-benzene solubility of wood. In: ASTM (Ed.): Annual book for ASTM standards. Vol. 04–09, section 4, pp. 285–286, n0 D 1107-56. Philadelphia
ASTM 1983b: Standard test method for water solubility of wood. In: ASTM (Ed.): Annual book or ASTM standars. Vol. 04–09, section 4, pp. 291–292, n0 D 1110-56. Philadelphia
ASTM 1983c: Standard test method for ether solubility of wood. In: ASTM (Ed.): Annual book for ASTM standards. Vol. 04–09, section 4, pp. 287–288, n0 D 1108-56. Philadelphia
ASTM 1983d: Standard test method for lignin in wood. In: ASTM (Ed.): Annual book for ASTM standards. Vol. 04–09, section 4, pp. 282–284, n0 D 1106-56. Philadelphia
Bartholin, M. C.; Besset, H.; Bourgois, J.; Guyonnet, R. 1985: Etude des propriétés énergétiques du bois torréfié. AFME Report n0 3.320.4063: 133 pp.
Bartholin, M. C.; Besset, H.; Bourgois, J.; Guyonnet, R. 1985: Le bois torréfié-étude du mécanisme réactionnel en vue d'une meilleure spécification du produit, AFME Report no 13-4: 81 pp.
Beaumont, O.; Bourgois, J.; Dussere, M. P.; Guyonnet, R. 1985: Rendement à charge partielle d'une chaudière automatique à bois. Promoclim E 6: 327–344
Beaumont, O.; Desbats, C.; Guyonnet, R.; Bourgois J.; Bartholin, M. C.; Besset, H. 1986: Test de huit combustibles issues de la biomasse dans une chaudière automatique à bois. Rev. Gen. Therm. 25 (291):166–175
Bellamy, L. J. 1975: The infrared spectra of complex molecules. 3 Ed., Vol. 1, London: Chapman and Hall
Bourgois, J.; Guyonnet, R. 1986: Etude comparative de la gazéification du bois et du bois torréfié. Promoclim E 6: 327–337
Bourgois, J.; Guyonnet, R. 1988: Characterization and analysis of torrefied wood. Wood Sci. Technol. 22: 143–155
Chow, S. Z. 1971: Infrared spectral characteristics and surface inactivation of wood at high temperatures. Wood Sci. Technol. 5: 27–39
Jaziri, M.; May J. F.; Bourgois J.; Guyonnet, R. 1987: Matériau composites à base de bois rétifié-contribution à l'étude des propriétés rhéologiques à l'état fondu en régime stationnaire. Angew. Makromol. Chem. 155: 67–81
Joseleau, J. P. 1980 Les hémicelluloses. In: B. Monties (Ed.): Les polymères végétaux. Paris: Bordas 87–121
Massinon, J. 1940: Les combustibles solides. Liège: H. Vaillant-Carmanne.
Tollier, M. Th.: Riquet, A. M. 1980: Dossage des polyosides. In: B. Monties (Ed.): Les polymères végétaux. Paris. Bordas; 156–175
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Bourgois, J., Bartholin, M.C. & Guyonnet, R. Thermal treatment of wood: analysis of the obtained product. Wood Sci. Technol. 23, 303–310 (1989). https://doi.org/10.1007/BF00353246
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00353246