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烧碱蒽醌(Soda-AQ)法制浆作为一种无硫制浆工艺,其优点是可以改善能量的使用效率,缺点是漂白浆的白度较低。实验研究了烧碱蒽醌阔叶木浆的可漂性以及对制浆过程中出现问题的解决办法。从对实验室自制的9份硫酸盐浆和1份取自工厂的浆进行OD0EpD1漂白,得到了氧脱木素后纸浆卡伯值和漂白终点纸浆光吸收系数间的线性关系(R2=0.9043)方程式。通过比较氧脱木素后纸浆的卡伯值和终点纸浆的光吸收系数,对采用AQ和MAQ作催化剂的4种不同的烧碱法浆与传统的硫酸盐浆的可漂性进行了比较。研究还发现,Soda-AQ浆经过预水解后可漂性可以得到改善,其可漂性与硫酸盐浆相近。
Soda-AQ pulping, as a sulfur-free pulping process, has the advantage of improving the efficiency of energy use, with the disadvantage of a lower whiteness of the bleached pulp. The bleachability of camptothecin anthraquinone hardwood pulp was experimentally studied and the solution to the problems appeared in the process of pulping. The linear relationship between the Kappa number and the light absorption coefficient of bleached pulp after oxygen delignification (R2 = 0.9043) was obtained by OD0EpD1 bleaching of 9 homemade kraft pulp and 1 plant-made pulp. equation. The bleachability of four different caustic soda pulp using AQ and MAQ as catalysts was compared with that of conventional kraft pulp by comparing the kappa number of the pulp with the oxygen delignification and the light absorption coefficient of the end pulp. The study also found that bleaching of Soda-AQ pulp after pre-hydrolysis can be improved and its bleachability is similar to that of kraft pulp.