TCF BLEACHING OF KRAFT PULP - INVESTIGATION OF THE MIXING CONDITIONS IN AN MC OZONE STAGE

被引：2
|
作者：
MIELISCH, HJ [1 ]
ODERMATT, J [1 ]
KORDSACHIA, O [1 ]
PATT, R [1 ]
机构：
[1] BUNDESFORSCHUNGSANSTALT FORST & HOLZWIRTSCHAFT,INST HOLZCHEM & CHEM TECHNOL HOLZES,D-21031 HAMBURG,GERMANY
来源：
HOLZFORSCHUNG | 1995年 / 49卷 / 05期
关键词：
KRAFT PULP; TCF BLEACHING; MC OZONE; MIXING CONDITIONS; RETENTION TIME;
D O I：
10.1515/hfsg.1995.49.5.445
中图分类号：
S7 [林业];
学科分类号：
0829 ; 0907 ;
摘要：
This investigation deals with the mixing conditions during the medium consistency (MC) ozone stage carried out with a laboratory high shear mixer. The pulp for these trials was an (OF) prebleached spruce kraft pulp. The mixing conditions were examined at constant as well as at different ozone charges by varying the mixing time and mixing speed of the high shear mixer. Additionally, the effect of a second mixing treatment at lowered rotation speed was investigated after initial intensive mixing of the pulp suspension with the ozone - oxygen gas. This treatment led to an increased ozone consumption which had a delignification improving effect. A slight change of the strength properties of the ozone bleached pulp due to intensive mixing was noticed.
引用
收藏
页码：445 / 452
页数：8
相关论文
共 50 条
  • [1] TCF bleaching with ozone for wheat straw kraft pulp
    Tong Guolin
    Cao Miaomiao
    Xue Guoxin
    NEW TECHNOLOGIES IN NON-WOOD FIBER PULPING AND PAPERMAKING, 2006, : 141 - 144
  • [2] Kraft pulp bleaching -: ECF or TCF?
    Eastment, R
    Süss, HU
    APPITA JOURNAL, 2004, 57 (05): : 343 - 344
  • [3] TCF bleaching of eucalyptus kraft pulp: The selection of the sequence and the best conditions
    Suss, HU
    Nimmerfroh, NF
    Mambrim, O
    JOURNAL OF PULP AND PAPER SCIENCE, 1997, 23 (11): : J517 - J521
  • [4] TCF bleaching of Eucalypt kraft pulp with oxone
    Yaqoob, Naila
    Stack, Karen
    Nguyen, Kien L.
    APPITA JOURNAL, 2010, 63 (05): : 381 - 386
  • [5] On lignin reactions in TCF kraft pulp bleaching
    Puitel, A. C.
    Bordeianu, Alina
    Gavrilescu, D.
    CELLULOSE CHEMISTRY AND TECHNOLOGY, 2007, 41 (4-6): : 219 - 234
  • [6] POTENTIAL OF OZONE IN KRAFT PULP BLEACHING
    ALLISON, RW
    APPITA JOURNAL, 1991, 44 (06): : 405 - 409
  • [7] Kraft reed pulp TCF bleaching with enzyme pretreatment
    South China Univ of Technology, Guangzhou, China
    Zhongguo Zaozh Xuebao, (54-59):
  • [8] Study of ECF and TCF bleaching of birch kraft pulp
    Liu, Z
    Xu, LX
    Yang, SH
    EMERGING TECHNOLOGIES OF PULPING & PAPERMAKING OF FAST-GROWING WOOD, 1998, : 284 - 291
  • [9] Study on laccase in TCF bleaching of kraft bamboo pulp
    Liu Mengru
    Fu Shiyu
    Zhan Huaiyu
    NEW TECHNOLOGIES IN NON-WOOD FIBER PULPING AND PAPERMAKING, 2006, : 440 - 444
  • [10] Kraft reed pulp TCF bleaching with enzyme pretreatment
    Zhan, Huaiyu
    Yue, Baozhen
    Hu, Weijiang
    Huang, Weifeng
    Cellulose Chemistry and Technology, 33 (01): : 53 - 60
12345