过氧化氢强化两段氧脱木素  

Enhanced Dual O_2 Delignification with H_2O_2 Reinforcement

作　　者：张彬 董元锋 刘温霞[3] 

机构地区：[1]Research&Development Center of APP,Indonesia,36126 [2]LP3I RD,APP,Indonesia [3]山东轻工业学院制浆造纸教育部重点实验室,山东济南250353

出　　处：《中国造纸》2010年第5期14-16,共3页China Pulp & Paper

摘　　要：研究表明,在两段氧脱木素过程加入过氧化氢会提高脱木素效果,且加在氧脱木素的第二段比加在第一段时的脱木素率和选择性指数(脱木素率与黏度损失率的比值)好;综合考虑,建议过氧化氢的用量控制在2～3kg/t;螯合处理对脱木素率与选择性指数也有影响,建议采用Q-O-OP处理程序,且螯合处理在酸性条件下的效果较好。Industrial two-stage oxygen delignification systems can achieve approximate 45% delignification,but continued reaction causes unacceptable loss in pulp quality and yield. However hydrogen peroxide can be used to reinforce the delignification in dual oxygen delignification systems. Laboratory results show that the application of hydrogen peroxide in the second oxygen delignification stage i.e. O-OP,can improve delignification efficiency,without inter-stage washing.

关 键 词：氧脱木素 过氧化氢 脱木素率 脱木素选择性指数 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]