桉木硫酸盐浆氧脱木素及黏度保护剂添加条件优化  

Optimization of Oxygen Delignification and Viscosity Protectant Addition of Eucalyptus Kratf Pulp

作　　者：郑平[1] 桑显葵 蔡佳琳[1] 覃程荣[1] 

机构地区：[1]广西大学,广西壮族自治区南宁530004

出　　处：《造纸科学与技术》2014年第4期14-17,51,共5页Paper Science & Technology

基　　金：广西大学教育创新项目(编号56GX1111T32568)

摘　　要：本实验对桉木硫酸盐浆氧脱木素工艺进行优化,并对3种不同的黏度保护剂进行筛选。研究结果表明,氧脱木素工艺的最佳条件为浆浓10%,温度100℃,时间60min,用碱量3%,氧压0.5MPa。在上述最佳条件下使用黏度保护剂(主要成分为尿素-MgSO4),当黏度保护剂用量为0.6%时,浆料氧漂后黏度降低率为14.19%,经后续漂白,纸浆白度可达86.51%ISO。In this paper, the process optimization of oxygen delignification and viscosity protectant of eucalyptus kraft pulp were studied. The results indicated that the optimal process conditions of oxygen delignification were： pulp consistency 10% , NaOH charge 3% , 02 pressure 0.5MPa, 100℃. The results also showed that when the charge of CO （ NH2 ） 2--MgS04 was 0.6% , the pulp can be bleached to the brightness of 86.51% ISO. At the same time, the reduction rate of viscosity was only 14. 19%

关 键 词：桉木硫酸盐浆 氧脱木素 黏度保护剂 尿素-MgSO4 

分 类 号：TS745[轻工技术与工程—制浆造纸工程]