桉木KP浆两段中浓氧脱木素研究  

A study on two-stage oxygen delignification for Eucalyptus kraft pulp

作　　者：李军[1] 吴绘敏[1] 徐峻[1] 李瑞瑞[1] 

机构地区：[1]华南理工大学制浆造纸工程国家重点实验室广东省造纸技术与装备公共实验室,广州510640

出　　处：《中华纸业》2011年第10期32-34,共3页China Pulp & Paper Industry

摘　　要：固定两段氧脱木素的用碱量、氧压、温度和总时间,研究两段氧脱木素的时间分配对氧脱木素效果的影响,并与同等条件下的单段氧脱木素比较。结果表明:当O1段时间为20min,O2段时间为60min时的浆样木素脱除率和白度增值率最高,黏度降低率最低,卡伯值、黏度、白度分别为10.39、757.0ml/g、54.30%ISO。与单段氧脱木素相比,两者的卡伯值、得率、白度几乎相同,但两段氧脱木素的黏度比单段的要高出68.5ml/g。The amount of alkali,oxygen pressure,tempera-ture and total time of two-stage oxygen delignification were fixed,the effect of the time distribution of two-stage oxygen delignification on oxygen delignification was studied.The results show that the Kappa number,the brightness,viscos-ity of the two-stage oxygen delignification pulp are 10.39,54.30%ISO,757.0ml/g respectively,as the first-stage oxygen delignification time was 20 minute and the second-stage oxy-gen delignification time was 60 minute.There are no differ-ences in Kappa number,the brightness and the yield,com-pared with one stage oxygen delignification pulp.But the viscosity of two-stage oxygen delignification pulp is higher 68.5ml/g than one stage oxygen delignification pulp.

关 键 词：桉木KP浆 氧脱木素 比较 

分 类 号：TS745[轻工技术与工程—制浆造纸工程] TS743.1