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纸浆的漂白需要较高的成本,而漂白车间的白水质量通常会降低纸浆漂白的白度,所以监控白水的质量可以控制纸浆白度损失。有必要开发一种可用来评估白水质量的方法,用这种方法区分白水中的纤维、细小纤维以及溶解物(DS)对浆料白度的影响。各个浆厂的白水质量差异较大,研究表明细小纤维的浓度和颜色是影响浆料白度的主要因素,溶解物质(DS)也会降低浆的光学性能,但没有那么明显;白水的组成成分不会引起纸浆返黄(除了阔叶木的细小纤维)。因此,在浆厂中对白水进行实时的监控可以用来诊断白度降低的问题并阻止其发生,同时也能降低漂白的成本。
Bleaching of pulp requires high costs, and the white water quality in a bleach plant generally reduces the whiteness of pulp bleaching, so monitoring the white water quality controls the loss of pulp whiteness. There is a need to develop a method that can be used to assess the quality of white water, using this method to distinguish the whiteness of the slurry from white water, fines and dissolved matter (DS). The white water quality varies widely among pulp mills. Studies have shown that the concentration and color of the fines are the main factors affecting the whiteness of the slurry. The dissolved substances (DS) also reduce the optical properties of the pulp, but not so obvious. The composition of the white water Will not cause pulp to yellow (except hardwood fines). Therefore, real-time monitoring of white water in the mill can be used to diagnose and prevent the whiteness reduction problem, while also reducing the cost of bleaching.