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Chemical Composition And Physical Properties Of Black Liquors And Their Effects On Liquor Recovery Operation In Brazilian Pulp Mills

机译：巴西纸浆厂黑液的化学成分，物理性质及其对白液回收操作的影响

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摘要

Black liquor is the major by-product and fuel of pulp mills. In this work, effects of black liquor properties on its recovery unit operation are analyzed. Thus, an experimental methodology for characterizing the principal chemical and physical properties of eucalyptus Kraft and bamboo soda black liquors has been developed, including sample collections from six Brazilian mills. Based on results, eucalyptus and bamboo black liquors present higher contents of non-processing elements (NPEs), higher concentration and different molar mass of lignin than those reported by the pine Kraft black liquor. This leads to distinct Theological properties of these liquors. By comparing results obtained for the both liquors, the bamboo and the eucalyptus, the former has the lowest sulfur level, the highest silicon and lignin concentration and, consequently, the highest apparent viscosity.
机译：黑液是纸浆厂的主要副产品和燃料。在这项工作中，分析了黑液性质对其回收装置操作的影响。因此，已开发出一种表征桉木牛皮纸和竹苏打黑液主要化学和物理性质的实验方法，包括从六个巴西工厂收集的样品。根据结果​​，与松木牛皮纸制黑液相比，桉树和竹制黑液的非加工元素（NPE）含量更高，木质素的浓度更高且摩尔质量不同。这导致这些酒具有独特的神学特性。通过比较两种液体（竹子和桉树）获得的结果，前者的硫含量最低，硅和木质素的浓度最高，因此表观粘度最高。

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