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在麦草KP浆的无氯和少氯漂白程序中使用活化剂,可促进脱木素作用并提高浆的白度。在氧脱木素前用NO2,硫酸和过氧酸进行预处理比较,以NO2效果最佳。NO2用量2%,处理后浆的卡伯值比未处理降低了6%,白度提高4%,粘度只下降1.6%。在D/CEDD漂白程序中,漂前用对有效氯用量8%的S12预处理,白度提高2.3%ISD,粘度基本无变化;活化剂TA用于NOP三段漂的P段,用量4%(对浆),可提高白度4.3%ISO,粘度也有明显提高。本试验采用GOPAPTA无氯漂白程序,可使麦草kp浆漂后白度达80%ISO,但粘度下降较大 相似文献
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Jian Zhao Xuezhi Li Shulan Shi Huiren Hu State Key Laboratory of Microbial Technology Shandong University Jinan China Tianjin University of Science Technology Tianjin China 《天津科技大学学报》2004,19(Z1)
1INTRODUCTIONNew pulping and bleaching technologies, which do not use chlorine-base chemicals, continue to be developed in the pulp and paper industry worldwide to meet stricter environmental regulation and increased public environmental awareness. ECF (Element-chlorine-free) and TCF (Total-chlorine-free) bleaching sequence had been used in bleaching plant to reduce the amount of chlorinated organic compounds in the bleach plant effluent. Oxygen delignification was gradually becoming a … 相似文献
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