Summary
Physicochemical analysis are carried out on samples of torrefied pine obtained at 260°C in inert atmosphere. Gaseous effluents which evolve in the first moments of the pyrolysis as well as liquid phase are analyzed by gas-chromatography. It appears from the solid analysis, that the chemical structure of pine is strongly altered by the process. The roasted wood exhibits particular properties: pronounced hydrophobic character, improved energetic power, a noticeable increase in ash content, a decrease of the volatile components and a decrease of those extracted by neutral solvents. It is shown that the more substantial change occurs at the beginning of heating.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Armines: Patents Fr No. 81-16493, Eur no 82-40-25762, US no 410-636: Procédé de transformation de matière ligneuse d'origine végétale et matière d'origine végétale ligneuse transformée par torréfaction
Armines: Patent Fr No.82-02342: Procédé pour l'exécution de réactions réductrices en métallurgie et produit utilisé
ASTM 1983: Standard test method for lignin in wood. In: ASTM (Ed.): Annual book of ASTM standards. Vol. 04-09, Section 4, pp. 282–284, no D1106-56. Philadelphia.
ASTM 1983: standard test method for Methoxyl groups in wood and related materials. In: ASTM (Ed.): Annual book of ASTM standards. Vol. 04-09, section 4, pp. 304–307, no D1166-60. Philadelphia
ASTM 1983: standard test method for water solubility of wood. In: ASTM (Ed.): Annual Book of ASTM standards. Vol. 04-09, section 4, pp. 291–292, D1110-56. Philadelphia
ASTM 1983: standard test method for Alcohol-Benzene solubility of wood. In: ASTM (Ed.): Annual book of ASTM standards. Vol. 04-09, section 4, pp. 285–286, No. D1107-56. Philadelphia
Bartholin, M. C.; Besset, H.; Bourgois, J.; Guyonnet, R. 1985: Etude des propriétés énergétiques du bois torréfié. AFME Report no 3.320.4063: 133 pp
Bartholin, M. C.; Besset, H.; Bourgois, J.; Guyonnet, R. 1986: 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 E6: 327–344
Beaumont, O.; Desbats, C.; Guyonnet, R.; Bourgois, J.; Bartholin, M. C.; Besset, H. 1986: Test de huit combustibles issus de la biomasse dans une chaudière automatique à bois. Rev. Gen. Therm. 25 (291): 166–175
Beaumont, O. 1981: Pyrolyse extractive du bois. Thesis, École Nationale Supérieure des Mines de Paris, France
Bellamy, L. J. 1975: The Infrared spectra of complex Molecules. 3 Ed., Vol. 1. London: Chapman and Hall
Belville, P. 1982: Modélisation de la cinétique de pyrolyse de particules de bois de taille importante et du bilan matière de la gazéification à l'oxygène pur. Thesis, Université de Compiègne, France
Bourgois, J.; Guyonnet, R. 1986: Étude comparative de la gazéification du bois et du bois torréfié. Promoclim EG: 327–337
Crawford, R. L. 1981: Lignin biodegradation and transformation. New-York. J. Wiley and Sons
Massinon, J. 1940: Les combustibles solides. Liege: H. Vaillant-Carmanne
Shafizadeh, F. 1971: Thermal behavior of carbohydrates. J. Polym. Sci. 36C: 21–51
Shafizadeh, F.; Fu, Y. L. 1973: Pyrolysis of cellulose. Carbohyd. Rev. 29: 113–122
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Bourgois, J., Guyonnet, R. Characterization and analysis of torrefied wood. Wood Sci.Technol. 22, 143–155 (1988). https://doi.org/10.1007/BF00355850
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF00355850