热水预抽提对竹子硫酸盐纸浆无元素氯漂白性能的影响  

Effect of hot water pre-extraction of bamboo on ECF bleaching performance of its kraft pulps

作　　者：胡会超[1,2] 詹怀宇[2] 黄六莲[1] 陈礼辉[1] 

机构地区：[1]福建农林大学材料工程学院,福州350002 [2]华南理工大学制浆造纸工程国家重点实验室,广州510640

出　　处：《中国工程科学》2014年第4期96-100,共5页Strategic Study of CAE

摘　　要：本文选用箱3种热水预抽提H-因子(0、500和1 000)和合适的蒸煮有效碱用量,得到卡伯值相近(20)的3种竹子硫酸盐纸浆(KP浆);然后,采用DQP(二氧化氯漂、螯合处理、过氧化氢漂)漂序,通过变化二氧化氯用量和过氧化氢用量,对比漂白浆的白度、返黄值、卡伯值降低率、黏度。发现热水预抽提可以提高纸浆漂白过程的卡伯值降低率;相同总有效氯因子下,漂后浆的白度较高,返黄值较低,黏度相近;达到相同白度(85%ISO)可节省约1.4%的总有效氯用量,然而返黄值略高。In this paper,three hot water pre-extraction H-factors （0,500 and 1 000） and ap-plicable digestion effective alkali dosages （15%,18%and 21%） were selected to obtain bam-boo kraft pulps with similar Kappa number （20）. The effect of hot water pre-extraction on the el-emntal chlorine free（ECF）bleaching performance of bamboo pulp was studied,through com-paring brightness,post color （PC） number,decreasing rate of Kappa number,viscosity of bleached pulp with same brightness （85%ISO） and beating degree （45°SR） under different dos-ages of chlorine dioxide and hydrogen peroxide. The results indicate that hot water pre-extrac-tion before kraft pulping could obtain higher decreasing rate of Kappa number,higher bright-ness,lower PC number,similar viscosity of bleached pulp at the same total active chlorine fac-tor. For the same brightness bleached pulp （85 %ISO）,hot water pre-extraction could save 1.4%bleaching chemical,but the PC number was slightly higher.

关 键 词：热水预抽提 KP法制浆 DQP漂白 竹子 

分 类 号：TS7[轻工技术与工程—制浆造纸工程]