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TM-AV [1 record]
Record 1 - internal organization data 2001-08-29
Record 1, English
Record 1, Subject field(s)
- Chemical Engineering
- Wood Products
Record 1, Main entry term, English
- thermomechanical aqueous/steam treatment
1, record 1, English, thermomechanical%20aqueous%2Fsteam%20treatment
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A type of lignocellulosics fractionation aqueous steam treatment which is based on a thermomechanical approach. 2, record 1, English, - thermomechanical%20aqueous%2Fsteam%20treatment
Record number: 1, Textual support number: 1 CONT
Thermomechanical aqueous/steam treatment(TM-AV). Finely comminuted lignocellulosics, as sawdusts, are prepared as water suspensions(10-15% solids). They are pumped through an homogenizing valve system at temperature ranging from 180 to 240°C. These temperatures are rapidly reached with the injection of steam. The high shear forced on the particles when passing through the homogenizing valves and the flash decompression, after the valves, facilitate the disintegration and solubilization of the hemicelluloses and of about one fifth of the lignin. The remaining lignin is then extracted with an alkaline solution or an organic solvent. Cellulose is obtained as the residue. 1, record 1, English, - thermomechanical%20aqueous%2Fsteam%20treatment
Record 1, French
Record 1, Domaine(s)
- Génie chimique
- Produits du bois
Record 1, Main entry term, French
- traitement thermomécanique en phase aqueuse
1, record 1, French, traitement%20thermom%C3%A9canique%20en%20phase%20aqueuse
correct, masculine noun
Record 1, Abbreviations, French
- TM-AV 1, record 1, French, TM%2DAV
masculine noun
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Traitement des matières lignocellulosiques par fractionnement en phase aqueuse. 2, record 1, French, - traitement%20thermom%C3%A9canique%20en%20phase%20aqueuse
Record number: 1, Textual support number: 1 CONT
Traitement thermomécanique à la vapeur (TM-AV). Les matières lignocellulosiques mises en sciure sont préparées sous forme de suspension dans l'eau (10-15 % en solides). Elles sont ensuite pompées à travers un système de vannes d'homogénéisation à des températures entre 180 et 240 °C. L'injection de vapeur permet d'atteindre rapidement cette plage de températures. Le cisaillement élevé, lors du passage à travers les vannes de cisaillement, et la décompression flash, en aval des vannes, facilitent la désagrégation et la solubilisation des hémicelluloses ainsi que d'environ un tiers de la lignine. Le reste de la lignine est ensuite extrait à l'aide d'une solution alcaline ou d'un solvant organique. Le résidu obtenu est la cellulose [...] 1, record 1, French, - traitement%20thermom%C3%A9canique%20en%20phase%20aqueuse
Record 1, Key term(s)
- traitement thermo-mécanique en phase aqueuse
Record 1, Spanish
Record 1, Textual support, Spanish
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