Process for bleaching lignocellulosic pulp
    3.
    发明公开
    Process for bleaching lignocellulosic pulp 有权
    Verfahren zum Bleichen von lignocellulosischem Zellstoff

    公开(公告)号:EP1039020A1

    公开(公告)日:2000-09-27

    申请号:EP00302354.6

    申请日:2000-03-22

    IPC分类号: D21C9/10

    摘要: Lignocellulose pulp is bleached by bleaching a pulp in aqueous alkali solution with oxygen and treating the pulp with an enzyme, while a liquid fraction delivered from the enzyme treatment step is subjected to a penetration treatment through a separation membrane, for example, reverse osmosis membrane, to separate a permeated fraction from a non-permeated fraction; the permeated fraction is fed to the alkali-oxygen bleaching (oxygen delignification) step and is used as a liquid medium of the bleaching system; and non-permeated fraction is subjected to a xylooligosaccharide-collecting procedure.

    摘要翻译: 木质纤维素纸浆通过用氧气在碱性水溶液中漂白纸浆并用酶处理纸浆而漂白,同时从酶处理步骤输送的液体馏分通过分离膜例如反渗透膜进行渗透处理, 以从非渗透部分分离渗透部分; 将渗透部分进料到碱 - 氧漂白(氧脱木质素)步骤中,并用作漂白体系的液体介质; 并且非渗透部分进行低聚木糖收集过程。