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- W2135545071 abstract "The ethanol-based pulping of Eucalyptus globulus by the ALCELL® process was studied to determine the optimum cooking conditions. In the first set of experiments the influence of chip size, chip impregnation, liquor-to-wood ratio and cooking additives was studied. Once the more convenient values for these variables were established according to kappa number, yield and viscosity, a surface response method was used to determine the influence of cooking temperature, cooking time and ethanol concentration on autocatalyzed pulping process. The developed models indicate that a high screened pulp yield (56%) and acceptable kappa number (23) and viscosity (1030 mL/g) can be obtained when cooking conditions are around 185°C, 110 min and 50% of ethanol. On a étudié le procédé de mise en pǎte à base d'éthanol d'Eucalyptus globulus par le procédé ALCELL® afin de déterminer les conditions de cuisson optimales. Dans la première série d'expériences, l'influence de la taille des copeaux, de l'imprégnation des copeaux, du rapport liquide-bois et des additifs de cuisson, a été étudiée. Après avoir établi les valeurs pertinentes pour ces variables en fonction du nombre kappa, du rendement et de la viscosité, on a eu recours à une méthode de réponse de surface pour déterminer l'influence de la température de cuisson, du temps de cuisson et de la concentration en ethanol sur le procédé de mise en pǎte autocatalysé. Les modèles mis au point indiquent qu'un haut rendement en pǎte tamisée (56%) ainsi qu'un nombre kappa (23) et une viscosité (1030 mL/g) acceptables peuvent être obtenus dans des conditions de cuisson se situant autour de 185°C, 110 min et 50% d'éthanol." @default.
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- W2135545071 date "1998-04-01" @default.
- W2135545071 modified "2023-10-16" @default.
- W2135545071 title "Ethanol-water pulping: Cooking variables optimization" @default.
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- W2135545071 doi "https://doi.org/10.1002/cjce.5450760213" @default.
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