桉木常规KP浆和RDH浆的氧脱木素研究(Ⅲ)——HNO_3/NaNO_3预处理对常规KP浆氧脱木素的影响  

Improved Oxygen Delignification of Conventional Kraft Pulp from Eucalyptus by HNO_3/NaNO_3 Pretreatment

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]天津科技大学材料科学与化学工程学院,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510640

出　　处：《中国造纸学报》2004年第1期33-36,共4页Transactions of China Pulp and Paper

摘　　要：研究了HNO_3/NaNO_3预处理对桉木常规KP浆氧脱术素的改善效果。研究表明,在氧脱术素前,用HNO_3/WaNO_3对浆料进行预处理,可以有效改善后续氧脱木素段的脱木素效率,提高氧脱术素的选择性。但HNO_3/NaNO_3用量有一最佳值,且宜采用短时间高温预处理的方式进行。若将HNO_3/NaNO_3预处理与H_2O_2强化氧脱术素相结合,可取得进一步降低氧脱木素浆卡伯值、提高纸浆白度和保持较高纸浆粘度的良好效果。Improved oxygen delignification of conventional kraft pulp from eucalyptus by HNO_3/NaNO_3 pretreatment was studied in the pa- per. HNO_3/NaNO_3, pretreatment prior to oxygen delignification enhanced oxygen delignification of conventional kraft pulp,and improved oxygen delignification selectivity. Pretreatment with a suitable charge of HNO_3/NaNO_3, and a short pretreatment time in high temperature was favorable to enhance oxygen delignification. Combining HNO_3/NaNO_3, pretreatment and H_2O_2, reinforcement, efficiency of oxygen delig- nification and brightness of delignified pulp were further increased.

关 键 词：桉木 KP浆 RDH浆 氧脱木素 HNO3/NaNO3预处理 纸浆 制浆 

分 类 号：TS749.1[轻工技术与工程—制浆造纸工程]