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MIXED BLEACHING OF HYDROGEN PEROXIDE AND SODIUM PERBORATE OF PULP FROM HEMP

机译:大麻中纸浆中过氧化氢和过硼酸钠的混合漂白

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摘要

In this paper, the influence of operating conditions used in the hydrogen peroxide and sodium perborate bleaching of hemp on the yield, KMnO_4 number and viscosity of the resulting pulp is considered. The results obtained from this experiment show that hydrogen peroxide charge is more influential than the time in order to obtain high viscosity of bleached pulp. Medium hydrogen peroxide charge (3%) and low to medium reaction time (60 to 120 min) are recommended in the bleaching of pulp from hemp stalks. On the other hand, the viscosity is essentially unchangeable with the increase of the sodium perborate charge and reaction time in sodium perborate bleaching. Medium sodium perborate charge and high hydrogen peroxide charge (3%and 2% respectively) and low to medium reaction time(60~120min) are desired in mixed bleaching of hydrogen peroxide and sodium perborate.
机译:本文考虑了过氧化氢和大麻过硼酸钠漂白中使用的操作条件对所得纸浆的收率,KMnO_4数和粘度的影响。从该实验中获得的结果表明,为了获得高粘度的漂白纸浆,过氧化氢电荷比时间更具影响力。在从大麻秆中漂白纸浆时,建议使用适量的过氧化氢(3%)和低至中等的反应时间(60至120分钟)。另一方面,随着过硼酸钠漂白中过硼酸钠装料的增加和反应时间的增加,粘度基本上不变。在过氧化氢和过硼酸钠的混合漂白中,需要中等过硼酸钠装料和高过氧化氢装料(分别为3%和2%)以及低至中等的反应时间(60〜120min)。

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