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为了评估蒸汽爆破预处理在蓝桉硫酸盐法制浆中的效果,将蒸汽爆破预处理木片和未预处理木片分别进行了硫酸盐法蒸煮。在纸浆黏度无显著变化的前提下,蒸汽爆破后的木片成浆卡伯值降低达70%;与未预处理木片制浆相比,在获得相近的脱木素程度下,利用蒸汽爆破预处理木片进行蒸煮能缩短60%的蒸煮时间,提高生产能力和生产率,而且,还可以将预处理时回收的大部分半纤维素转换为具有更高附加值的产品。尽管用蒸汽爆破预处理木片成浆强度较低,但其光学性能却有明显改善,尤其对于桉木浆。
In order to evaluate the effect of steam explosion pretreatment in the eucalyptus kraft pulping, the steam explosion pretreatment wood chips and the non-pretreatment wood chips were respectively subjected to the kraft cooking. Under the premise of no significant change in the pulp viscosity, the kapok pulp wood pulp value after steam explosion was reduced by 70%. Compared with the non-pretreatment wood pulp pulping, with the similar degree of delignification, the steam explosion pretreatment Cooking wood chips can reduce cook time by up to 60%, increase productivity and productivity, and convert most of the hemicellulose recovered during pretreatment to products with higher added value. Although the pretreatment of wood chips by steam explosion has a lower strength, the optical properties of wood chips have been significantly improved, especially for eucalyptus pulp.