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Bleaching method of non-wood pulp and bleached paper pulp

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  • Title:
    Bleaching method of non-wood pulp and bleached paper pulp
  • Author: LI HENGGANG ; JIANG CHENGZHEN ; ZHU LILI ; GAO SHAOFENG ; XIONG XIAOMIN
  • Subjects: APPARATUS THEREFOR ; PAPER-MAKING ; PRODUCTION OF CELLULOSE ; PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCESFROM CELLULOSE-CONTAINING MATERIALS ; REGENERATION OF PULPING LIQUORS ; TEXTILES
  • Description: The invention discloses a bleaching method of non-wood pulp and bleached paper pulp. The bleaching method comprises the following steps: beating unbleached non-wood pulp until the beating degree is 15-35 degrees SR; adding ethoxane, caustic soda and a stabilizer into the pulped non-wood pulp, and carrying out bleaching reaction; wherein the stabilizer is selected from a silicon type stabilizer, a non-silicon type stabilizer or a compound of the silicon type stabilizer and the non-silicon type stabilizer; the dosage of the ethoxane is 30 to 90 kg/ADT; the use amount of the caustic soda is 20-100 kg/ADT; the dosage of the stabilizer is 5-25 kg/ADT; the reaction temperature of the bleaching reaction is 75 to 125 DEG C, and the reaction time is 60 to 240 minutes. 本申请公开了一种非木材浆的漂白方法及漂白纸浆，包括：将未漂白的非木材浆打浆至叩解度15～35°SR；向打浆后的非木材浆中添加乙氧烷、苛性钠和稳定剂，进行漂白反应；其中，所述稳定剂为选自硅型稳定剂、非硅型稳定剂或硅型与非硅型稳定剂的复配物；所述乙氧烷的用量为30～90kg/ADT；所述苛性钠的用量为20～100kg/ADT；所述稳定剂的用量为5～25kg/ADT；所述漂白反应的反应温度为75～125℃，反应时间为60～240min。
  • Creation Date: 2023
  • Language: Chinese;English
  • Source: esp@cenet
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