桉木常规KP浆和RDH浆的氧脱木素研究(Ⅰ)——常规KP浆和RDH浆的氧脱木素效果  

Comparison of Oxygen Delignification of Conventional Kraft Pulp and RDH Kraft Pulp from Eucalyptus

作　　者：赵建[1] 李雪芝[1] 石淑兰[2] 胡惠仁[2] 詹怀宇[3] 

机构地区：[1]山东大学微生物技术国家重点实验室,山东济南250100 [2]天津科技大学,天津300222 [3]华南理工大学制浆造纸工程国家重点实验室,广州510641

出　　处：《中国造纸学报》2003年第1期31-35,共5页Transactions of China Pulp and Paper

基　　金：轻工业科技计划项目 (轻科 950 1 0 )

摘　　要：对桉木常规KP浆和RDH硫酸盐浆的氧脱木素进行了研究和对比 ,确定了氧脱木素的最佳条件。结果表明 ,常规KP浆和RDH硫酸盐浆在适宜的条件下经氧脱木素后 ,纸浆卡伯值分别降低 58 2 %和 42 2 5 % ,纸浆白度分别增加了 2 9 5%ISO和 2 2 4%ISO ,达到56 8%ISO和 63 0 %ISO ,而纸浆的粘度变化不大。综合而言 ,氧脱木素对常规KP浆和RDH浆的卡伯值、白度和脱木素选择性的影响规律类似 ,但由于RDH浆的初始卡伯值和粘度较低 ,因而氧脱木素时可以采用相对温和的反应条件 。Oxygen delignification of RDH kraft pulp and conventional kraft pulp from eucalyptus was studied, and optimum conditions of oxygen delignification were determined. The results showed that the reduction of kappa number of pulps was 58.2% and 42.25%, and brightness of pulps increased by 29.5%ISO and 22.4%ISO respectively for the conventional pulp and the RDH pulp by oxygen delignification under the optimum conditions, but oxygen delignification had little influence on the viscosity of the pulps. Regulation of change of kappa number, brightness and selectivity of delignification was similar during oxygen delignification for conventional kraft pulp and RDH pulp. However, lower charge of NaOH was needed in the oxygen delignification for RDH pulp compared to the conventional and RDH oxygen delignified-pulp had lower viscosity and kappa number, and higher brightness of pulp under similar conditions of oxygen delignification.

关 键 词：桉木 常规KP浆 RDH硫酸盐浆 氧脱木素 纸浆 制浆 

分 类 号：TS749.1[轻工技术与工程—制浆造纸工程]