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受环保、经济和能源因素推动的氧脱木素技术在降低未漂浆卡伯值方面起着重要作用,但是氧脱木素的投资较高,印度大部分以农业剩余物为原料的小纸厂无法承受用氧脱木素法的高额投资。文中介绍了一种可用于小型纸厂的经济有效的降低未漂浆卡伯值的方法,即采用A、EP结合的方法对麦草浆、蔗渣浆和竹浆进行预处理。这些浆料进行氧脱木素后,卡伯值降低45%～55%,但浆料强度有较大损失(10%～20%);而采用AEP工艺后,卡伯值下降非常明显(30%～42%),同时,白度提高达到10%,与氧脱木素浆相比,强度损失很小,且这些浆的后续漂白效果更好,可获得更高的白度。
Oxygen delignification technology, driven by environmental, economic and energy considerations, plays an important role in reducing the unbleached kappa number, but the investment in oxygen delignification is high, and most Indian small paper with agricultural residues as raw material The plant can not afford the high investment of oxygen delignification. This paper presents a cost-effective method for reducing the kappa number of unbleached pulp that can be used in small-scale paper mills by pretreating wheat straw pulp, bagasse pulp and bamboo pulp using A and EP methods. After the oxygen delignification, the Kappa number decreased by 45% -55%, but the slurry strength had a great loss (10% -20%). After the AEP process, the Kappa number decreased obviously (30 % ~ 42%) at the same time, the whiteness is increased up to 10%, the intensity loss is very small compared with the oxygen delignified pulp, and the follow-up bleaching effect of these pulp is better, and higher whiteness can be obtained.